Co Nanoislands Rooted on Co-N-C Nanosheets as Efficient Oxygen Electrocatalyst for Zn-Air Batteries
文献类型：期刊论文
| 作者 | Yu, P; Wang, L; Sun, FF; Xie, Y; Liu, X; Ma, JY; Wang, XW; Tian, CG; Li, JH; Fu, HG |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2019 |
| 卷号 | 31期号:30页码:- |
| 关键词 | DURABLE ELECTROCATALYST ACTIVE-SITES REDUCTION CATHODE NANOPARTICLES NANOFIBERS |
| ISSN号 | 0935-9648 |
| DOI | 10.1002/adma.201901666 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Developing non-precious-metal bifunctional oxygen reduction and evolution reaction (ORR/OER) catalysts is a major task for promoting the reaction efficiency of Zn-air batteries. Co-based catalysts have been regarded as promising ORR and OER catalysts owing to the multivalence characteristic of cobalt element. Herein, the synthesis of Co nanoislands rooted on Co-N-C nanosheets supported by carbon felts (Co/Co-N-C) is reported. Co nanosheets rooted on the carbon felt derived from electrodeposition are applied as the self-template and cobalt source. The synergistic effect of metal Co islands with OER activity and Co-N-C nanosheets with superior ORR performance leads to good bifuctional catalytic performances. Wavelet transform extended X-ray absorption fine spectroscopy and X-ray photoelectron spectroscopy certify the formation of Co (mainly Co-0) and the Co-N-C (mainly Co2+ and Co3+) structure. As the air-cathode, the assembled aqueous Zn-air battery exhibits a small charge-discharge voltage gap (0.82 V@10 mA cm(-2)) and high power density of 132 mW cm(-2), outperforming the commercial Pt/C catalyst. Additionally, the cable flexible rechargeable Zn-air battery exhibits excellent bendable and durability. Density functional theory calculation is combined with operando X-ray absorption spectroscopy to further elucidate the active sites of oxygen reactions at the Co/Co-N-C cathode in Zn-air battery. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31999]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Tsinghua Univ, Dept Chem, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Beijing 100084, Peoples R China; 2.Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ Peoples Republ China, Harbin 150080, Heilongjiang, Peoples R China; 3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, P,Wang, L,Sun, FF,et al. Co Nanoislands Rooted on Co-N-C Nanosheets as Efficient Oxygen Electrocatalyst for Zn-Air Batteries[J]. ADVANCED MATERIALS,2019,31(30):-. |
| APA | Yu, P.,Wang, L.,Sun, FF.,Xie, Y.,Liu, X.,...&Fu, HG.(2019).Co Nanoislands Rooted on Co-N-C Nanosheets as Efficient Oxygen Electrocatalyst for Zn-Air Batteries.ADVANCED MATERIALS,31(30),-. |
| MLA | Yu, P,et al."Co Nanoislands Rooted on Co-N-C Nanosheets as Efficient Oxygen Electrocatalyst for Zn-Air Batteries".ADVANCED MATERIALS 31.30(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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