Uric acid as an electrochemically active compound for sodium-ion batteries: Stepwise Na+-storage mechanisms of π-conjugation and stabilized carbon anion
文献类型：期刊论文
| 作者 | Ma, Chao1; Zhao, Xiaolin2; Harris, Michelle M.1; Liu, Jianjun2; Wang, Kai-Xue1; Chen, Jie-Sheng1 |
| 刊名 | ACS Applied Materials and Interfaces
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:39页码:33934-33940 |
| ISSN号 | 19448244 |
| DOI | 10.1021/acsami.7b10165 |
| 英文摘要 | Developing efficient sodium-ion-storage mechanisms to increase the energy capacity in organic electrodes is a critical issue even after this period of prolonged effort. Uric acid (UA), a simple organic compound with three carbonyl groups is demonstrated to be electrochemically active in the insertion/extraction of Na ions. Theoretical calculations and experimental characterizations reveal that the sodium-ion storage by UA is a result of the stepwise mechanisms of p-π conjugation and the carbon anion. Aside from C=O, the functional group C= C(NH-)2also provides an efficient Na-storage activated site in which the lone-pair electrons is stabilized through the planar-to-tetrahedral structural transition and low-energy orbital hybridization of N atoms. For further improvement of the electrochemical performance, a uric acid and carbon nanotube (UA@ CNT) composite is prepared via a vacuum solution impregnation method. When employed as an anode material for sodium-ion batteries, the UA@CNT composite exhibits high specific capacity, excellent rate capability, and long cycling life even at high current densities. A reversible capacity of over 163 mA h g-1is maintained even after 150 cycles at a current density of 200 mA g-1. The present study paves a way to develop reversible high-capacity organic electrode materials for sodium-ion batteries by a carbon-anion stabilization mechanism. © 2017 American Chemical Society. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25681]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; 2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China |
| 推荐引用方式 GB/T 7714 | Ma, Chao,Zhao, Xiaolin,Harris, Michelle M.,et al. Uric acid as an electrochemically active compound for sodium-ion batteries: Stepwise Na+-storage mechanisms of π-conjugation and stabilized carbon anion[J]. ACS Applied Materials and Interfaces,2017,9(39):33934-33940. |
| APA | Ma, Chao,Zhao, Xiaolin,Harris, Michelle M.,Liu, Jianjun,Wang, Kai-Xue,&Chen, Jie-Sheng.(2017).Uric acid as an electrochemically active compound for sodium-ion batteries: Stepwise Na+-storage mechanisms of π-conjugation and stabilized carbon anion.ACS Applied Materials and Interfaces,9(39),33934-33940. |
| MLA | Ma, Chao,et al."Uric acid as an electrochemically active compound for sodium-ion batteries: Stepwise Na+-storage mechanisms of π-conjugation and stabilized carbon anion".ACS Applied Materials and Interfaces 9.39(2017):33934-33940. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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