Achieving highly stable Li-O2battery operation by designing a carbon nitride-based cathode towards a stable reaction interface
文献类型：期刊论文
| 作者 | Lou, Peili1,2; Cui, Zhonghui1; Guo, Xiangxin1 |
| 刊名 | Journal of Materials Chemistry A
 |
| 出版日期 | 2017 |
| 卷号 | 5期号:34页码:18207-18213 |
| ISSN号 | 20507488 |
| DOI | 10.1039/c7ta05009g |
| 英文摘要 | Aprotic Li-O2batteries have attracted a great deal of attention because of their potential to offer much higher energy density than those provided by commercialized lithium-ion batteries. However, their reversible operation is plagued by serious side-reactions from liquid electrolytes and/or carbon-based materials. Recently, carbon-free materials have been proposed and utilized to construct stable cathodes for Li/O2chemistry. Different from most of the previously reported metal-based carbon-free cathodes, herein we report a non-metal-based carbon-free cathode support consisting of mesoporous boron-doped carbon nitride (m-BCN) and demonstrate its excellent stability and activity for Li/O2chemistry. Benefiting from the introduction of evenly distributed RuO2nanoparticles (1-2 nm) in the pores of the boron-doped carbon nitride support, excellent cycle stability with a low overpotential (141 cycles with a pristine Li anode which is extended to 227 cycles after replacing it with a new Li anode at 0.5 mA cm-2) and superior rate capability (1.28 mA h cm-2at 1 mA cm-2) are obtained. This impressive performance is ascribed to the enhanced stability and activity of such designed cathodes, which is supported by the fact that reversible formation and decomposition of Li2O2with no accumulation of Li2CO3is detected during cycling. These results demonstrate that manipulating cathode materials towards stable reaction interfaces is essential for alleviating the formation of by-products and improving the performance of Li-O2batteries. © 2017 The Royal Society of Chemistry. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25436]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.University of Chinese Academy of Sciences, Beijing; 100039, China |
| 推荐引用方式 GB/T 7714 | Lou, Peili,Cui, Zhonghui,Guo, Xiangxin. Achieving highly stable Li-O2battery operation by designing a carbon nitride-based cathode towards a stable reaction interface[J]. Journal of Materials Chemistry A,2017,5(34):18207-18213. |
| APA | Lou, Peili,Cui, Zhonghui,&Guo, Xiangxin.(2017).Achieving highly stable Li-O2battery operation by designing a carbon nitride-based cathode towards a stable reaction interface.Journal of Materials Chemistry A,5(34),18207-18213. |
| MLA | Lou, Peili,et al."Achieving highly stable Li-O2battery operation by designing a carbon nitride-based cathode towards a stable reaction interface".Journal of Materials Chemistry A 5.34(2017):18207-18213. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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。