Hierarchical Core-Shell Co2N/CoP Embedded in N, P-doped Carbon Nanotubes as Efficient Oxygen Reduction Reaction Catalysts for Zn-air Batteries
文献类型：期刊论文
| 作者 | Yao, Chongchao ; Li, Jiaxin; Zhang, Zhihao; Gou, Chunli; Zhang, Zhongshen; Pan, Gang; Zhang, Jing
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| 刊名 | SMALL
 |
| 出版日期 | 2022-05 |
| 卷号 | 18期号:20页码:2108094 |
| 关键词 | HYDROGEN EVOLUTION REACTION BIFUNCTIONAL ELECTROCATALYSTS COP NANOCRYSTALS ACTIVE-SITES NANOPARTICLES ELECTRODE STORAGE |
| ISSN号 | 1613-6810 |
| 英文摘要 | Projecting a cost-effective and highly efficient electrocatalyst for the oxygen reaction reduction (ORR) counts a great deal for Zn-air batteries. Herein, a hierarchical core-shell ORR catalyst (Co2N/CoP@PNCNTs) is developed by embedding cobalt phosphides and/or cobalt nitrides as the core into N, P-doped carbon nanotubes (PNCNTs) as the shell via one-step carbonization, nitridation, and phosphorization of pyrolyzing Co-MOF precursor. The globally N, P-doped structure of Co2N/CoP@PNCNTs demonstrates an outstanding electrocatalytic activity in the alkaline solution with the onset and half-wave potentials of 1.07 and 0.85 V respectively. Moreover, a Zn-air battery assembled from Co2N/CoP@PNCNTs as the air cathode delivers an open circuit potential of 1.49 V, a maximum power density of 151.1 mW cm(-2) and a specific capacity of 823.8 mAh kg(-1). It is reflected that Co2N/CoP@PNCNTs provides a long-term durability with a slight decline of 15 h in the chronoamperometry measurement and an excellent charge-discharge stability with negligible voltage decay for 150 h at 10 mA cm(-2) in Zn-air batteries. The results reveal that Co2N/CoP@PNCNTs has superiority over most Co-N-x-C or CoxP@C catalysts reported so far. The excellent catalytic properties and stability of Co2N/CoP@PNCNTs derive from synergistic effects between Co2N/CoP and mesoporous N, P-doped carbon nanotubes. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47657]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 通讯作者 | Zhang, Jing |
| 作者单位 | 1.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Res Ctr Environm Mat & Pollut Control Technol, Beijing 101408, Peoples R China 3.Univ Chinese Acad Sci, Res Ctr Environm Mat & Pollut Control Technol, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China 4.Nottingham Trent Univ, Sch Anim Rural & Environm Sci, Integrated Water Energy Food Facil iWEF, 5.Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Chongchao,Li, Jiaxin,Zhang, Zhihao,et al. Hierarchical Core-Shell Co2N/CoP Embedded in N, P-doped Carbon Nanotubes as Efficient Oxygen Reduction Reaction Catalysts for Zn-air Batteries[J]. SMALL,2022,18(20):2108094. |
| APA | Yao, Chongchao.,Li, Jiaxin.,Zhang, Zhihao.,Gou, Chunli.,Zhang, Zhongshen.,...&Zhang, Jing.(2022).Hierarchical Core-Shell Co2N/CoP Embedded in N, P-doped Carbon Nanotubes as Efficient Oxygen Reduction Reaction Catalysts for Zn-air Batteries.SMALL,18(20),2108094. |
| MLA | Yao, Chongchao,et al."Hierarchical Core-Shell Co2N/CoP Embedded in N, P-doped Carbon Nanotubes as Efficient Oxygen Reduction Reaction Catalysts for Zn-air Batteries".SMALL 18.20(2022):2108094. |
入库方式： OAI收割
来源：生态环境研究中心
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