Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide
For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Chen, Huanyu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: No title available - an international journal, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:218 ; year:2022 ; day:8 ; month:02 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.compscitech.2021.109179 |
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ELV056301677 |
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| 245 | 1 | 0 | |a Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide |
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| 520 | |a For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. | ||
| 520 | |a For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. | ||
| 650 | 7 | |a Graphene and other 2D-materials |2 Elsevier | |
| 650 | 7 | |a Sensing |2 Elsevier | |
| 650 | 7 | |a Polyimide sponge |2 Elsevier | |
| 650 | 7 | |a Flexible composites |2 Elsevier | |
| 650 | 7 | |a Polymer-matrix composites (PMCs) |2 Elsevier | |
| 700 | 1 | |a Sun, Gaohui |4 oth | |
| 700 | 1 | |a Yang, Zailin |4 oth | |
| 700 | 1 | |a Wang, Ting |4 oth | |
| 700 | 1 | |a Bai, Guofeng |4 oth | |
| 700 | 1 | |a Wang, Jun |4 oth | |
| 700 | 1 | |a Chen, Rongrong |4 oth | |
| 700 | 1 | |a Han, Shihui |4 oth | |
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10.1016/j.compscitech.2021.109179 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001622.pica (DE-627)ELV056301677 (ELSEVIER)S0266-3538(21)00535-2 DE-627 ger DE-627 rakwb eng Chen, Huanyu verfasserin aut Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. Graphene and other 2D-materials Elsevier Sensing Elsevier Polyimide sponge Elsevier Flexible composites Elsevier Polymer-matrix composites (PMCs) Elsevier Sun, Gaohui oth Yang, Zailin oth Wang, Ting oth Bai, Guofeng oth Wang, Jun oth Chen, Rongrong oth Han, Shihui oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:218 year:2022 day:8 month:02 pages:0 https://doi.org/10.1016/j.compscitech.2021.109179 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 218 2022 8 0208 0 |
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10.1016/j.compscitech.2021.109179 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001622.pica (DE-627)ELV056301677 (ELSEVIER)S0266-3538(21)00535-2 DE-627 ger DE-627 rakwb eng Chen, Huanyu verfasserin aut Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. Graphene and other 2D-materials Elsevier Sensing Elsevier Polyimide sponge Elsevier Flexible composites Elsevier Polymer-matrix composites (PMCs) Elsevier Sun, Gaohui oth Yang, Zailin oth Wang, Ting oth Bai, Guofeng oth Wang, Jun oth Chen, Rongrong oth Han, Shihui oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:218 year:2022 day:8 month:02 pages:0 https://doi.org/10.1016/j.compscitech.2021.109179 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 218 2022 8 0208 0 |
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10.1016/j.compscitech.2021.109179 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001622.pica (DE-627)ELV056301677 (ELSEVIER)S0266-3538(21)00535-2 DE-627 ger DE-627 rakwb eng Chen, Huanyu verfasserin aut Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. Graphene and other 2D-materials Elsevier Sensing Elsevier Polyimide sponge Elsevier Flexible composites Elsevier Polymer-matrix composites (PMCs) Elsevier Sun, Gaohui oth Yang, Zailin oth Wang, Ting oth Bai, Guofeng oth Wang, Jun oth Chen, Rongrong oth Han, Shihui oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:218 year:2022 day:8 month:02 pages:0 https://doi.org/10.1016/j.compscitech.2021.109179 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 218 2022 8 0208 0 |
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10.1016/j.compscitech.2021.109179 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001622.pica (DE-627)ELV056301677 (ELSEVIER)S0266-3538(21)00535-2 DE-627 ger DE-627 rakwb eng Chen, Huanyu verfasserin aut Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. Graphene and other 2D-materials Elsevier Sensing Elsevier Polyimide sponge Elsevier Flexible composites Elsevier Polymer-matrix composites (PMCs) Elsevier Sun, Gaohui oth Yang, Zailin oth Wang, Ting oth Bai, Guofeng oth Wang, Jun oth Chen, Rongrong oth Han, Shihui oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:218 year:2022 day:8 month:02 pages:0 https://doi.org/10.1016/j.compscitech.2021.109179 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 218 2022 8 0208 0 |
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10.1016/j.compscitech.2021.109179 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001622.pica (DE-627)ELV056301677 (ELSEVIER)S0266-3538(21)00535-2 DE-627 ger DE-627 rakwb eng Chen, Huanyu verfasserin aut Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. Graphene and other 2D-materials Elsevier Sensing Elsevier Polyimide sponge Elsevier Flexible composites Elsevier Polymer-matrix composites (PMCs) Elsevier Sun, Gaohui oth Yang, Zailin oth Wang, Ting oth Bai, Guofeng oth Wang, Jun oth Chen, Rongrong oth Han, Shihui oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:218 year:2022 day:8 month:02 pages:0 https://doi.org/10.1016/j.compscitech.2021.109179 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 218 2022 8 0208 0 |
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However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. 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ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide |
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Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide |
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For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. |
| abstractGer |
For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. |
| abstract_unstemmed |
For the advantages of light weight, rapid recovery, and high sensitivity, the conductive flexible composite sponges with idiographic spatial structure as a stress sensor has received great attention. However, for small pressure and deformation, it is still challenging to achieve high sensitivity and response. Here, the polyimide (PI) sponge with through-hole structure and special functional groups is successfully fabricated through a clever structural design and is used as substrate of the composite sponges. The new PI sponge effectively induces the fabrication of reduced graphene oxide (RGO) sponge that possessing a pleated stacked structure in the cells only by a hydrothermal route. By controlling the GO dispersion concentration, the maximum electrical conductivity of the composite sponges reaches to 10.68 × 10−4 S/m. The maximum sensitivity of composite sponges arrives at 1.172 kPa−1 and possesses a wide response range from 0 to 1 kPa. Comparing with previous similar works, the maximum sensitivity is improved by 74.9–1231.8%. Meanwhile, composite sponges exhibit excellent cycling stability under different compression rates, and present obvious response to tiny stress or deformation which is as low as 0.09 N and 0.45%. This is of great significance for the application of the conductive composite sponges sensor in tiny stress. |
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Ultra-sensitive, lightweight, and flexible composite sponges for stress sensors based combining of “through-hole” polyimide sponge and “pleated stacked” reduced graphene oxide |
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Sun, Gaohui Yang, Zailin Wang, Ting Bai, Guofeng Wang, Jun Chen, Rongrong Han, Shihui |
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