Coherent nanoscale cobalt/cobalt oxide heterostructures embedded in porous carbon for the oxygen reduction reaction
文献类型：期刊论文
| 作者 | Li, XC; She, FS; Shen, D; Liu, CP; Chen, LH; Li, Y; Deng, Z; Chen, ZH; Wang, HE |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:50页码:28625-28631 |
| 关键词 | N-DOPED CARBON LITHIUM-ION STORAGE HIGHLY EFFICIENT COBALT NANOPARTICLES ZEOLITIC IMIDAZOLATE EVOLUTION REACTIONS HYBRIDIZED PHASES ELECTROCATALYST GRAPHENE COO |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c8ra04256j |
| 文献子类 | 期刊论文 |
| 英文摘要 | Cost-effective and efficient electrocatalysts for the oxygen reduction reaction (ORR) are crucial for fuel cells and metal-air batteries. Herein, we report the facile synthesis of a Co/CoO/Co3O4 heterostructure embedded in a porous carbon matrix by refluxing and annealing. This composite exhibits several structural merits for catalyzing the ORR: (1) the existence of metallic Co and graphitic carbon enhanced the electrical conduction; (2) the porous, Loose carbon network facilitated the electrolyte permeation and mass transport; (3) more importantly, the nanosized coherent CoO/Co3O4 heterojunctions with structural defects and oxygen vacancies enhanced the charge transport/separation at the interface and adsorption affinity to O-2, thus promoting the ORR kinetics and Lowering the reaction barrier. Consequently, the composite electrode manifests high electrocatalytic activity, attaining a current density of 6.7 mA cm(-2) at -0.8 V (vs. Ag/AgCl), which is superior to pure CoO nanoparticles (4.7 mA cm(-2)), and has good methanol tolerance. The present strategy based on heterostructure and vacancy engineering may pave the way for the exploration of more advanced, low-cost electrocatalysts for electrochemical reduction and evolution processes. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30875]  |
| 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.City Univ Hong Kong, Ctr Diamond & Adv Films COSDAF, Hong Kong, Hong Kong, Peoples R China 2.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, 122 Luoshi Rd, Wuhan 430070, Hubei, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201800, Peoples R China 4.City Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China 5.City Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, XC,She, FS,Shen, D,et al. Coherent nanoscale cobalt/cobalt oxide heterostructures embedded in porous carbon for the oxygen reduction reaction[J]. RSC ADVANCES,2018,8(50):28625-28631. |
| APA | Li, XC.,She, FS.,Shen, D.,Liu, CP.,Chen, LH.,...&Wang, HE.(2018).Coherent nanoscale cobalt/cobalt oxide heterostructures embedded in porous carbon for the oxygen reduction reaction.RSC ADVANCES,8(50),28625-28631. |
| MLA | Li, XC,et al."Coherent nanoscale cobalt/cobalt oxide heterostructures embedded in porous carbon for the oxygen reduction reaction".RSC ADVANCES 8.50(2018):28625-28631. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。