Nanosize stabilized Li-deficient Li2-xO2 through cathode architecture for high performance Li-O-2 batteries
文献类型：期刊论文
| 作者 | Fan, Wugang1; Wang, Beizhou1,2; Guo, Xiangxin1; Kong, Xiangyang3; Liu, Jianjun1 |
| 刊名 | NANO ENERGY
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 27页码:577-586 |
| 关键词 | Li-O-2 battery Discharge product Size effect Cathode architecture First-principles thermodynamics |
| 英文摘要 | ' Control of discharge products with respect to composition, size and morphology is of importance to reduce charge potential, suppress side reactions and improve reversibility of Li-O-2 batteries, but faces significant challenge due to complicated electrochemical reactions. Here, we report a cathode architecture composed of ZnO nanoparticles anchored on vertically aligned carbon nanotubes (ZnO/VACNTs) that significantly suppresses LiO2 disproportionation, forming the composites of LiO2, Li3O4 and Li2O(2) in nanometer size as the final discharge products. The exposed surface of VACNTs provides the electrochemical reaction sites for reducing O-2 to O-2(-). Transmission electron microscopy measurements in combination with first-principles calculations reveal that the Li2-xO2 compounds nucleated at the interfaces between the ZnO and the VACNTs are stabilized by the nanosize effect (in the scale of 6 nm), which is related to the semiconductive behavior of ZnO. This discharge chemistry leads to the reduced charge overpotential and extended cycle life. The results here demonstrate that the electrochemical reaction tuned by the cathode architecture is a powerful tool to improve Li-O-2 cell performance. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 关键词[WOS] | LITHIUM-OXYGEN BATTERIES ; INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; AUGMENTED-WAVE METHOD ; AIR BATTERY ; DISCHARGE PRODUCT ; DOPED GRAPHENE ; BASIS-SET ; SUPEROXIDE ; 1ST-PRINCIPLES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000384910500064 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/22015]  |
| 专题 | 上海硅酸盐研究所_高性能陶瓷和超微结构国家重点实验室_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Shanghai Univ, Dept Chem, Coll Sci, Shanghai 200444, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Inst Mat Mobile Energy, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Wugang,Wang, Beizhou,Guo, Xiangxin,et al. Nanosize stabilized Li-deficient Li2-xO2 through cathode architecture for high performance Li-O-2 batteries[J]. NANO ENERGY,2016,27:577-586. |
| APA | Fan, Wugang,Wang, Beizhou,Guo, Xiangxin,Kong, Xiangyang,&Liu, Jianjun.(2016).Nanosize stabilized Li-deficient Li2-xO2 through cathode architecture for high performance Li-O-2 batteries.NANO ENERGY,27,577-586. |
| MLA | Fan, Wugang,et al."Nanosize stabilized Li-deficient Li2-xO2 through cathode architecture for high performance Li-O-2 batteries".NANO ENERGY 27(2016):577-586. |
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。