Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries
Air cathode performance is essential for rechargeable zinc–air batteries (ZABs). In this study, we develop a self-templated synthesis technique for fabricating bimetallic alloys (FeNi3), bimetallic nitrides (FeNi3N) and heterostructured FeNi3/FeNi3N hollow nanotubes. Owing to its structural and comp...
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| Format: | Article |
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KeAi Communications Co. Ltd.
2022-09-01
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| Series: | eScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667141722000581 |
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| author | Yanli Niu Shuaiqi Gong Xuan Liu Chen Xu Mingze Xu Shi-Gang Sun Zuofeng Chen |
| author_facet | Yanli Niu Shuaiqi Gong Xuan Liu Chen Xu Mingze Xu Shi-Gang Sun Zuofeng Chen |
| author_sort | Yanli Niu |
| collection | DOAJ |
| description | Air cathode performance is essential for rechargeable zinc–air batteries (ZABs). In this study, we develop a self-templated synthesis technique for fabricating bimetallic alloys (FeNi3), bimetallic nitrides (FeNi3N) and heterostructured FeNi3/FeNi3N hollow nanotubes. Owing to its structural and compositional advantages, FeNi3/FeNi3N exhibits remarkable bifunctional oxygen electrocatalytic performance with an extremely small potential gap of 0.68 V between the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Theoretical calculations reveal reduced Gibbs free energy for the rate-limiting O–O bond formation during OER due to the self-adaptive surface reconfiguration, which induces a synergistic effect between Fe(Ni)OOH developed in situ on the surface and the inner FeNi3/FeNi3N. ZAB fabricated using the FeNi3/FeNi3N catalyst shows high power density, small charge/discharge voltage gap and excellent cycling stability. In addition to its excellent battery performance, the corresponding quasi-solid-state ZAB shows robust flexibility and integrability. The synthesis method is extended to prepare a CoFe/CoFeN oxygen electrocatalyst, demonstrating its applicability to other iron-group elements. |
| first_indexed | 2024-04-12T01:50:22Z |
| format | Article |
| id | doaj.art-61864c643a304edfbf0e24023ab7454b |
| institution | Directory Open Access Journal |
| issn | 2667-1417 |
| language | English |
| last_indexed | 2024-04-12T01:50:22Z |
| publishDate | 2022-09-01 |
| publisher | KeAi Communications Co. Ltd. |
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| series | eScience |
| spelling | doaj.art-61864c643a304edfbf0e24023ab7454b2022-12-22T03:52:57ZengKeAi Communications Co. Ltd.eScience2667-14172022-09-0125546556Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteriesYanli Niu0Shuaiqi Gong1Xuan Liu2Chen Xu3Mingze Xu4Shi-Gang Sun5Zuofeng Chen6Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, ChinaShanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, ChinaShanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, ChinaShanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, ChinaShanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, ChinaState Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, ChinaShanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China; Corresponding author.Air cathode performance is essential for rechargeable zinc–air batteries (ZABs). In this study, we develop a self-templated synthesis technique for fabricating bimetallic alloys (FeNi3), bimetallic nitrides (FeNi3N) and heterostructured FeNi3/FeNi3N hollow nanotubes. Owing to its structural and compositional advantages, FeNi3/FeNi3N exhibits remarkable bifunctional oxygen electrocatalytic performance with an extremely small potential gap of 0.68 V between the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Theoretical calculations reveal reduced Gibbs free energy for the rate-limiting O–O bond formation during OER due to the self-adaptive surface reconfiguration, which induces a synergistic effect between Fe(Ni)OOH developed in situ on the surface and the inner FeNi3/FeNi3N. ZAB fabricated using the FeNi3/FeNi3N catalyst shows high power density, small charge/discharge voltage gap and excellent cycling stability. In addition to its excellent battery performance, the corresponding quasi-solid-state ZAB shows robust flexibility and integrability. The synthesis method is extended to prepare a CoFe/CoFeN oxygen electrocatalyst, demonstrating its applicability to other iron-group elements.http://www.sciencedirect.com/science/article/pii/S2667141722000581Bifunctional electrocatalystsOxygen electrocatalysisBimetallic nitridesHollow nanotube structureZn–air batteries |
| spellingShingle | Yanli Niu Shuaiqi Gong Xuan Liu Chen Xu Mingze Xu Shi-Gang Sun Zuofeng Chen Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries eScience Bifunctional electrocatalysts Oxygen electrocatalysis Bimetallic nitrides Hollow nanotube structure Zn–air batteries |
| title | Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries |
| title_full | Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries |
| title_fullStr | Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries |
| title_full_unstemmed | Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries |
| title_short | Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries |
| title_sort | engineering iron group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible zn air batteries |
| topic | Bifunctional electrocatalysts Oxygen electrocatalysis Bimetallic nitrides Hollow nanotube structure Zn–air batteries |
| url | http://www.sciencedirect.com/science/article/pii/S2667141722000581 |
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