High-Performance NaVO3 with Mixed Cationic and Anionic Redox Reactions for Na-Ion Battery Applications
文献类型：期刊论文
| 作者 | Su, BZ; Wu, SL; Liang, HQ; Zhou, WC; Liu, JN; Goonetilleke, D; Sharma, N; Sit, PHL; Zhang, WJ; Yu, DYW |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2020-10-27 |
| 期号 | 20页码:8836 |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/acs.chemmater.0c02244 |
| 文献子类 | Article |
| 英文摘要 | Sodium-ion batteries (NIBs) are a potential lowcost alternative to lithium-ion batteries for large-scale energy storage, but many high-capacity NIB cathode materials undergo irreversible structural changes during charge and discharge, leading to fast capacity fading. Herein, monoclinic NaVO3 exhibits good cycle performance with high capacity as a cathode material for NIBs. In situ synchrotron X-ray diffraction studies show that the material structure is virtually invariant during Na+ ( de)intercalation, with the a and b lattice parameters changing only by 0.13 and 0.19%, respectively. The material undergoes an oxygen redox reaction during initial charge while delivering a remarkable specific capacity of 245 mAh g-1 (1.2-4.7 V) with contributions from cationic (V4+/V5+) and anionic (O2-/O-) redox couples during discharge. The stable VO4 tetrahedral framework also enables the material to give superior rate and cycle capabilities, with a capacity of 164 mAh g(-1) (67% utilization) at a current of 1000 mA g(-1) (about 5C) and a capacity retention of 90% after 50 cycles. Density functional theory calculations further verify the stability of the material and the charge-discharge mechanism. This work can broaden the horizon for designing high-energy cathode materials with enhanced structural stability for sodium-ion batteries. |
| WOS关键词 | OXYGEN-REDOX ; CATHODE MATERIAL ; ELECTROCHEMICAL PERFORMANCE ; STRUCTURAL EVOLUTION ; HIGH-CAPACITY ; SODIUM ; P2-TYPE ; OXIDATION ; NACRO2 |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27664]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Su, BZ,Wu, SL,Liang, HQ,et al. High-Performance NaVO3 with Mixed Cationic and Anionic Redox Reactions for Na-Ion Battery Applications[J]. CHEMISTRY OF MATERIALS,2020(20):8836. |
| APA | Su, BZ.,Wu, SL.,Liang, HQ.,Zhou, WC.,Liu, JN.,...&Yu, DYW.(2020).High-Performance NaVO3 with Mixed Cationic and Anionic Redox Reactions for Na-Ion Battery Applications.CHEMISTRY OF MATERIALS(20),8836. |
| MLA | Su, BZ,et al."High-Performance NaVO3 with Mixed Cationic and Anionic Redox Reactions for Na-Ion Battery Applications".CHEMISTRY OF MATERIALS .20(2020):8836. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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