Engineering of the A-site deficiency in La
The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance thei...
Ausführliche Beschreibung
Autor*in: |
Xu, Na [verfasserIn] Yu, Longjiao [verfasserIn] Zhang, Jiyuan [verfasserIn] Feng, Jingdong [verfasserIn] Zhao, Lina [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Journal of electroanalytical chemistry - New York, NY [u.a.] : Elsevier, 1959, 926 |
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Übergeordnetes Werk: |
volume:926 |
DOI / URN: |
10.1016/j.jelechem.2022.116936 |
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Katalog-ID: |
ELV008815445 |
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520 | |a The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. | ||
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700 | 1 | |a Zhang, Jiyuan |e verfasserin |4 aut | |
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700 | 1 | |a Zhao, Lina |e verfasserin |4 aut | |
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2022 |
allfields |
10.1016/j.jelechem.2022.116936 doi (DE-627)ELV008815445 (ELSEVIER)S1572-6657(22)00928-6 DE-627 ger DE-627 rda eng 540 620 DE-600 35.27 bkl Xu, Na verfasserin aut Engineering of the A-site deficiency in La 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. A-site deficiency LSCFN perovskite Oxygen reduction reaction Aluminum-air battery Yu, Longjiao verfasserin aut Zhang, Jiyuan verfasserin aut Feng, Jingdong verfasserin aut Zhao, Lina verfasserin aut Enthalten in Journal of electroanalytical chemistry New York, NY [u.a.] : Elsevier, 1959 926 Online-Ressource (DE-627)302466533 (DE-600)1491150-4 (DE-576)098614797 1873-2569 nnns volume:926 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.27 Elektrochemische Analyse AR 926 |
spelling |
10.1016/j.jelechem.2022.116936 doi (DE-627)ELV008815445 (ELSEVIER)S1572-6657(22)00928-6 DE-627 ger DE-627 rda eng 540 620 DE-600 35.27 bkl Xu, Na verfasserin aut Engineering of the A-site deficiency in La 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. A-site deficiency LSCFN perovskite Oxygen reduction reaction Aluminum-air battery Yu, Longjiao verfasserin aut Zhang, Jiyuan verfasserin aut Feng, Jingdong verfasserin aut Zhao, Lina verfasserin aut Enthalten in Journal of electroanalytical chemistry New York, NY [u.a.] : Elsevier, 1959 926 Online-Ressource (DE-627)302466533 (DE-600)1491150-4 (DE-576)098614797 1873-2569 nnns volume:926 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.27 Elektrochemische Analyse AR 926 |
allfields_unstemmed |
10.1016/j.jelechem.2022.116936 doi (DE-627)ELV008815445 (ELSEVIER)S1572-6657(22)00928-6 DE-627 ger DE-627 rda eng 540 620 DE-600 35.27 bkl Xu, Na verfasserin aut Engineering of the A-site deficiency in La 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. A-site deficiency LSCFN perovskite Oxygen reduction reaction Aluminum-air battery Yu, Longjiao verfasserin aut Zhang, Jiyuan verfasserin aut Feng, Jingdong verfasserin aut Zhao, Lina verfasserin aut Enthalten in Journal of electroanalytical chemistry New York, NY [u.a.] : Elsevier, 1959 926 Online-Ressource (DE-627)302466533 (DE-600)1491150-4 (DE-576)098614797 1873-2569 nnns volume:926 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.27 Elektrochemische Analyse AR 926 |
allfieldsGer |
10.1016/j.jelechem.2022.116936 doi (DE-627)ELV008815445 (ELSEVIER)S1572-6657(22)00928-6 DE-627 ger DE-627 rda eng 540 620 DE-600 35.27 bkl Xu, Na verfasserin aut Engineering of the A-site deficiency in La 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. A-site deficiency LSCFN perovskite Oxygen reduction reaction Aluminum-air battery Yu, Longjiao verfasserin aut Zhang, Jiyuan verfasserin aut Feng, Jingdong verfasserin aut Zhao, Lina verfasserin aut Enthalten in Journal of electroanalytical chemistry New York, NY [u.a.] : Elsevier, 1959 926 Online-Ressource (DE-627)302466533 (DE-600)1491150-4 (DE-576)098614797 1873-2569 nnns volume:926 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.27 Elektrochemische Analyse AR 926 |
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10.1016/j.jelechem.2022.116936 doi (DE-627)ELV008815445 (ELSEVIER)S1572-6657(22)00928-6 DE-627 ger DE-627 rda eng 540 620 DE-600 35.27 bkl Xu, Na verfasserin aut Engineering of the A-site deficiency in La 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. A-site deficiency LSCFN perovskite Oxygen reduction reaction Aluminum-air battery Yu, Longjiao verfasserin aut Zhang, Jiyuan verfasserin aut Feng, Jingdong verfasserin aut Zhao, Lina verfasserin aut Enthalten in Journal of electroanalytical chemistry New York, NY [u.a.] : Elsevier, 1959 926 Online-Ressource (DE-627)302466533 (DE-600)1491150-4 (DE-576)098614797 1873-2569 nnns volume:926 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 35.27 Elektrochemische Analyse AR 926 |
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Elektronische Aufsätze |
author-letter |
Xu, Na |
doi_str_mv |
10.1016/j.jelechem.2022.116936 |
dewey-full |
540 620 |
author2-role |
verfasserin |
title_sort |
engineering of the a-site deficiency in la |
title_auth |
Engineering of the A-site deficiency in La |
abstract |
The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. |
abstractGer |
The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. |
abstract_unstemmed |
The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) can aid the commercialization of fuel cells and metal-air batteries. Here, we developed a series of La0.4Sr0.6Co0.7Fe0.2Nb0.1O3-δ (LSCFN) perovskites by engineering A-site deficiency to enhance their electrocatalytic activity for ORR in alkaline solutions. We found that LSCFN-0.90 with the highest amount of vacant A-sites has a highly oxidative oxygen species (O2 2−/O−) and an appropriate Co oxidation state - is a much better ORR catalyst in alkaline solutions compared to those with less vacant A-sites. The enhanced ORR kinetics enabled their use as the cathode catalyst in aluminum-air batteries, which also revealed better electrochemical performances for the catalyst with the highest A-site deficiency. Overall, the results demonstrate that an appropriate A-site cation deficiency in perovskites can enhance the ORR electrocatalytic activity. |
collection_details |
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title_short |
Engineering of the A-site deficiency in La |
remote_bool |
true |
author2 |
Yu, Longjiao Zhang, Jiyuan Feng, Jingdong Zhao, Lina |
author2Str |
Yu, Longjiao Zhang, Jiyuan Feng, Jingdong Zhao, Lina |
ppnlink |
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doi_str |
10.1016/j.jelechem.2022.116936 |
up_date |
2024-07-06T20:59:57.623Z |
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