A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries

Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However,...
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Gespeichert in:

Autor*in:	Yang Xia [verfasserIn] Zheng Fang [verfasserIn] Chengwei Lu [verfasserIn] Zhen Xiao [verfasserIn] Xinping He [verfasserIn] Yongping Gan [verfasserIn] Hui Huang [verfasserIn] Guoguang Wang [verfasserIn] Wenkui Zhang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Li-Se batteries Li LiTiO pre-lithiation polyselenides

Übergeordnetes Werk:	In: Nanomaterials - MDPI AG, 2012, 12(2022), 5, p 815
Übergeordnetes Werk:	volume:12 ; year:2022 ; number:5, p 815

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/nano12050815

Katalog-ID:	DOAJ004677730

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520			\|a Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.
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spelling	10.3390/nano12050815 doi (DE-627)DOAJ004677730 (DE-599)DOAJfed48e8a9c384065959c28a3e52903a1 DE-627 ger DE-627 rakwb eng QD1-999 Yang Xia verfasserin aut A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. Li-Se batteries Li<sub<2</sub<Se LiTiO<sub<2</sub< pre-lithiation polyselenides Chemistry Zheng Fang verfasserin aut Chengwei Lu verfasserin aut Zhen Xiao verfasserin aut Xinping He verfasserin aut Yongping Gan verfasserin aut Hui Huang verfasserin aut Guoguang Wang verfasserin aut Wenkui Zhang verfasserin aut In Nanomaterials MDPI AG, 2012 12(2022), 5, p 815 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:12 year:2022 number:5, p 815 https://doi.org/10.3390/nano12050815 kostenfrei https://doaj.org/article/fed48e8a9c384065959c28a3e52903a1 kostenfrei https://www.mdpi.com/2079-4991/12/5/815 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 5, p 815
allfields_unstemmed	10.3390/nano12050815 doi (DE-627)DOAJ004677730 (DE-599)DOAJfed48e8a9c384065959c28a3e52903a1 DE-627 ger DE-627 rakwb eng QD1-999 Yang Xia verfasserin aut A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. Li-Se batteries Li<sub<2</sub<Se LiTiO<sub<2</sub< pre-lithiation polyselenides Chemistry Zheng Fang verfasserin aut Chengwei Lu verfasserin aut Zhen Xiao verfasserin aut Xinping He verfasserin aut Yongping Gan verfasserin aut Hui Huang verfasserin aut Guoguang Wang verfasserin aut Wenkui Zhang verfasserin aut In Nanomaterials MDPI AG, 2012 12(2022), 5, p 815 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:12 year:2022 number:5, p 815 https://doi.org/10.3390/nano12050815 kostenfrei https://doaj.org/article/fed48e8a9c384065959c28a3e52903a1 kostenfrei https://www.mdpi.com/2079-4991/12/5/815 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 5, p 815
allfieldsGer	10.3390/nano12050815 doi (DE-627)DOAJ004677730 (DE-599)DOAJfed48e8a9c384065959c28a3e52903a1 DE-627 ger DE-627 rakwb eng QD1-999 Yang Xia verfasserin aut A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. Li-Se batteries Li<sub<2</sub<Se LiTiO<sub<2</sub< pre-lithiation polyselenides Chemistry Zheng Fang verfasserin aut Chengwei Lu verfasserin aut Zhen Xiao verfasserin aut Xinping He verfasserin aut Yongping Gan verfasserin aut Hui Huang verfasserin aut Guoguang Wang verfasserin aut Wenkui Zhang verfasserin aut In Nanomaterials MDPI AG, 2012 12(2022), 5, p 815 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:12 year:2022 number:5, p 815 https://doi.org/10.3390/nano12050815 kostenfrei https://doaj.org/article/fed48e8a9c384065959c28a3e52903a1 kostenfrei https://www.mdpi.com/2079-4991/12/5/815 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 5, p 815
allfieldsSound	10.3390/nano12050815 doi (DE-627)DOAJ004677730 (DE-599)DOAJfed48e8a9c384065959c28a3e52903a1 DE-627 ger DE-627 rakwb eng QD1-999 Yang Xia verfasserin aut A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. Li-Se batteries Li<sub<2</sub<Se LiTiO<sub<2</sub< pre-lithiation polyselenides Chemistry Zheng Fang verfasserin aut Chengwei Lu verfasserin aut Zhen Xiao verfasserin aut Xinping He verfasserin aut Yongping Gan verfasserin aut Hui Huang verfasserin aut Guoguang Wang verfasserin aut Wenkui Zhang verfasserin aut In Nanomaterials MDPI AG, 2012 12(2022), 5, p 815 (DE-627)718627199 (DE-600)2662255-5 20794991 nnns volume:12 year:2022 number:5, p 815 https://doi.org/10.3390/nano12050815 kostenfrei https://doaj.org/article/fed48e8a9c384065959c28a3e52903a1 kostenfrei https://www.mdpi.com/2079-4991/12/5/815 kostenfrei https://doaj.org/toc/2079-4991 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 5, p 815
language	English
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authorswithroles_txt_mv	Yang Xia @@aut@@ Zheng Fang @@aut@@ Chengwei Lu @@aut@@ Zhen Xiao @@aut@@ Xinping He @@aut@@ Yongping Gan @@aut@@ Hui Huang @@aut@@ Guoguang Wang @@aut@@ Wenkui Zhang @@aut@@
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callnumber-first	Q - Science
author	Yang Xia
spellingShingle	Yang Xia misc QD1-999 misc Li-Se batteries misc Li<sub<2</sub<Se misc LiTiO<sub<2</sub< misc pre-lithiation misc polyselenides misc Chemistry A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries
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topic_title	QD1-999 A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries Li-Se batteries Li<sub<2</sub<Se LiTiO<sub<2</sub< pre-lithiation polyselenides
topic	misc QD1-999 misc Li-Se batteries misc Li<sub<2</sub<Se misc LiTiO<sub<2</sub< misc pre-lithiation misc polyselenides misc Chemistry
topic_unstemmed	misc QD1-999 misc Li-Se batteries misc Li<sub<2</sub<Se misc LiTiO<sub<2</sub< misc pre-lithiation misc polyselenides misc Chemistry
topic_browse	misc QD1-999 misc Li-Se batteries misc Li<sub<2</sub<Se misc LiTiO<sub<2</sub< misc pre-lithiation misc polyselenides misc Chemistry
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title	A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries
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author_browse	Yang Xia Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang
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title_sort	facile pre-lithiated strategy towards high-performance li<sub<2</sub<se-litio<sub<2</sub< composite cathode for li-se batteries
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title_auth	A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries
abstract	Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.
abstractGer	Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.
abstract_unstemmed	Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub<2</sub<Se-LiTiO<sub<2</sub< composite cathode materials. Impressively, the rationally designed Li<sub<2</sub<Se-LiTiO<sub<2</sub< composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub<2</sub<Se-LiTiO<sub<2</sub< cathode is two times higher than that of Li<sub<2</sub<Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup<4+</sup< into Ti<sup<3+</sup<, as well as the strong chemisorption of LiTiO<sub<2</sub< particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.
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url	https://doi.org/10.3390/nano12050815 https://doaj.org/article/fed48e8a9c384065959c28a3e52903a1 https://www.mdpi.com/2079-4991/12/5/815 https://doaj.org/toc/2079-4991
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author2	Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang
author2Str	Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang
ppnlink	718627199
callnumber-subject	QD - Chemistry
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doi_str	10.3390/nano12050815
callnumber-a	QD1-999
up_date	2024-07-04T00:42:04.669Z
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A Facile Pre-Lithiated Strategy towards High-Performance Li<sub<2</sub<Se-LiTiO<sub<2</sub< Composite Cathode for Li-Se Batteries

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