Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery
Abstract Zinc–air batteries (ZABs) hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental friendliness. However, the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of elec...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-04-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/s40820-020-00435-z |
| _version_ | 1818520027292237824 |
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| author | Wenfu Xie Jianming Li Yuke Song Shijin Li Jianbo Li Mingfei Shao |
| author_facet | Wenfu Xie Jianming Li Yuke Song Shijin Li Jianbo Li Mingfei Shao |
| author_sort | Wenfu Xie |
| collection | DOAJ |
| description | Abstract Zinc–air batteries (ZABs) hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental friendliness. However, the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of electrocatalysts when assembly into a thick electrode with high mass loading. Herein, we report a hierarchical electrocatalyst based on carbon microtube@nanotube core–shell nanostructure (CMT@CNT), which demonstrates superior electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction with a small potential gap of 0.678 V. Remarkably, when being employed as air–cathode in ZAB, the CMT@CNT presents an excellent performance with a high power density (160.6 mW cm−2), specific capacity (781.7 mAhg Zn −1 ) as well as long cycle stability (117 h, 351 cycles). Moreover, the ZAB performance of CMT@CNT is maintained well even under high mass loading (3 mg cm−2, three times as much as traditional usage), which could afford high power density and energy density for advanced electronic equipment. We believe that this work is promising for the rational design of hierarchical structured electrocatalysts for advanced metal-air batteries. |
| first_indexed | 2024-12-11T01:31:55Z |
| format | Article |
| id | doaj.art-7d8f07b5c1bd41d8b9e0a21b747370c3 |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-11T01:31:55Z |
| publishDate | 2020-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-7d8f07b5c1bd41d8b9e0a21b747370c32022-12-22T01:25:21ZengSpringerOpenNano-Micro Letters2311-67062150-55512020-04-0112111410.1007/s40820-020-00435-zHierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air BatteryWenfu Xie0Jianming Li1Yuke Song2Shijin Li3Jianbo Li4Mingfei Shao5State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologyPetroleum Geology Research and Laboratory Center, Research Institute of Petroleum Exploration and Development (RIPED), PetroChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologyState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologyState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologyState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologyAbstract Zinc–air batteries (ZABs) hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental friendliness. However, the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of electrocatalysts when assembly into a thick electrode with high mass loading. Herein, we report a hierarchical electrocatalyst based on carbon microtube@nanotube core–shell nanostructure (CMT@CNT), which demonstrates superior electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction with a small potential gap of 0.678 V. Remarkably, when being employed as air–cathode in ZAB, the CMT@CNT presents an excellent performance with a high power density (160.6 mW cm−2), specific capacity (781.7 mAhg Zn −1 ) as well as long cycle stability (117 h, 351 cycles). Moreover, the ZAB performance of CMT@CNT is maintained well even under high mass loading (3 mg cm−2, three times as much as traditional usage), which could afford high power density and energy density for advanced electronic equipment. We believe that this work is promising for the rational design of hierarchical structured electrocatalysts for advanced metal-air batteries.http://link.springer.com/article/10.1007/s40820-020-00435-zHierarchical structureCarbon microtube@nanotubeCore–shellZinc–air battery |
| spellingShingle | Wenfu Xie Jianming Li Yuke Song Shijin Li Jianbo Li Mingfei Shao Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery Nano-Micro Letters Hierarchical structure Carbon microtube@nanotube Core–shell Zinc–air battery |
| title | Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery |
| title_full | Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery |
| title_fullStr | Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery |
| title_full_unstemmed | Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery |
| title_short | Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery |
| title_sort | hierarchical carbon microtube nanotube core shell structure for high performance oxygen electrocatalysis and zn air battery |
| topic | Hierarchical structure Carbon microtube@nanotube Core–shell Zinc–air battery |
| url | http://link.springer.com/article/10.1007/s40820-020-00435-z |
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