Activity-structure relationship of electrocatalysts derived from lithium cobalt oxides for metal-air batteries
文献类型：期刊论文
| 作者 | Yan, Shanshan; Xue, Yejian; Shao, Guangjie; Liu, Zhaoping |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2020 |
| 卷号 | 478 |
| 关键词 | OXYGEN EVOLUTION REACTION HIGH-PERFORMANCE ELECTROCATALYST BIFUNCTIONAL ELECTROCATALYSTS EFFICIENT ELECTROCATALYSTS REDUCTION REACTION CATALYTIC-ACTIVITY THERMAL-STABILITY LIXCOO2 CATHODE DOPED GRAPHENE LICOO2 |
| 英文摘要 | Lithium cobalt oxides are widely investigated as promising bifunctional catalysts for metal-air batteries in recent years. Generally, the promotion of catalytic activity of LiCoO2-based materials is mainly due to the ultra-thin layer structure with thickness of several atomic layers. Herein, a series of nanosheets are obtained from layered LiCoO2 material treated by nitric acid. More unexpectedly, although the specific surface area of the samples increases dramatically due to ultrathin nanosheets, the catalytic activities almost are not improved compared with that of bulk LiCoO2 material. After annealing process, these samples exhibit superior catalytic performance in alkaline solutions. Based on X-ray diffraction spectra, raman spectra, X-ray photoelectron spectroscopy, and O-2 temperature-programmed desorption analysis, the results indicate that metastable Li1-x-yHyCoO2 nanosheets are obtained from bulk LiCoO2 material treated by acid. They transform into main phase of spinel-type Li1-xCoO2-delta material with more oxygen vacancies after annealing process. The great difference in electrochemical performances between the two-type materials is attributed to the crystal structures, the exposure of Co-O octahedral sites in the plane of spinel-type Li1-xCoO2-delta, the coexistence of valence state of Con+ and oxygen vacancy. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22416]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2020专题_期刊论文 2021专题_期刊论文 |
| 作者单位 | 1.Xue, YJ 2.Shao, GJ (corresponding author), Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Hebei Key Lab Heavy Met Deep Remediat Water & Res, Coll Environm & Chem Engn, Qinhuangdao 066004, Hebei, Peoples R China. 3.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Peoples R China. 4.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Adv Li Ion Battery Engn Lab, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yan, Shanshan,Xue, Yejian,Shao, Guangjie,et al. Activity-structure relationship of electrocatalysts derived from lithium cobalt oxides for metal-air batteries[J]. JOURNAL OF POWER SOURCES,2020,478. |
| APA | Yan, Shanshan,Xue, Yejian,Shao, Guangjie,&Liu, Zhaoping.(2020).Activity-structure relationship of electrocatalysts derived from lithium cobalt oxides for metal-air batteries.JOURNAL OF POWER SOURCES,478. |
| MLA | Yan, Shanshan,et al."Activity-structure relationship of electrocatalysts derived from lithium cobalt oxides for metal-air batteries".JOURNAL OF POWER SOURCES 478(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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。