Anodic electrochemical mechanism and performance dominant factors of the VB2-air battery
文献类型：期刊论文
| 作者 | Wang, FQ; Wu, MF; Chowdari, BVR; Wen, ZY |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-05-15 |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2020.124257 |
| 文献子类 | Article |
| 英文摘要 | The vanadium diboride air battery (VB2-air battery) is a primary battery with the highest intrinsic anode capacity of 4060 mAh g(-1) and a theoretical open circuit potential of 1.55 V. So far, the studies of the battery are particularly limited by the elusive anodic electrochemical mechanism. In this work, the following new mechanism for the charge transfer reaction of the anode is proposed: VB2 + 12OH(-) -> VO2+ + 2B(OH)(4)(-) + 2H(2)O + 11e(-). From the possible reactions of the anode, we conclude that the surface of the VB2 is not passivated during the battery's standing and discharging processes, which is further verified by specially designed experiments. The surface density of the active substance, the direct contact area of the active substance with the electrolyte, and the hydroxide ion concentration are considered as the dominant factors of the battery's discharge voltage and discharge capacity. A series of measurements on pouch cells have been conducted to ensure the direct proportion between the evolution tendency of charge transfer reaction and the concentration of the hydroxide ions. |
| WOS关键词 | TRANSITION-METAL BORIDES ; ZINC-AIR BATTERIES ; HIGH-CAPACITY ; PASSIVATION ; VANADIUM ; DISSOLUTION ; TRANSPORT ; EXCHANGE ; CATHODE |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28062]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Wang, FQ,Wu, MF,Chowdari, BVR,et al. Anodic electrochemical mechanism and performance dominant factors of the VB2-air battery[J]. CHEMICAL ENGINEERING JOURNAL,2020. |
| APA | Wang, FQ,Wu, MF,Chowdari, BVR,&Wen, ZY.(2020).Anodic electrochemical mechanism and performance dominant factors of the VB2-air battery.CHEMICAL ENGINEERING JOURNAL. |
| MLA | Wang, FQ,et al."Anodic electrochemical mechanism and performance dominant factors of the VB2-air battery".CHEMICAL ENGINEERING JOURNAL (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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