Y-Doped Na3V2(PO4)(2)F-3 compounds for sodium ion battery cathodes: electrochemical performance and analysis of kinetic properties
文献类型：期刊论文
| 作者 | Liu, Wanqiu3; Yi, Hongming1,3; Zheng, Qiong3; Li, Xianfeng2,3; Zhang, Huamin2,3 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2017-06-14 |
| 卷号 | 5页码:10928-10935 |
| DOI | 10.1039/c7ta03133e |
| 英文摘要 | To improve the intrinsic electronic conductivity and Na ion mobility of Na3V2(PO4)(2)F-3 (NVPF), Y(yttrium) atoms are introduced into the NVPF/C complex as a partial substitute for V(vanadium) through a sol-gel method. The effects of Y substitution on the crystal structure, morphology, electrochemical performance and kinetic properties of NVPF were investigated. Based on the battery performance comparison of the Na3V2-xYx(PO4)(3)/C (x = 0, 0.05, 0.1 and 0.2) samples, Na3V1.9Y0.1(PO4)(3)/C showed the best electrochemical performance and cycling stability. At a low rate of 0.5C, the 5 mol% Y-doped sample delivered a discharge capacity of 121.3 mA h g(-1), which was very close to the theoretical specific capacity. And even at a high rate of 50C, the discharge capacity achieved was higher than 80 mA h g(-1). After 200 cycles, the capacity retention of Na3V1.9Y0.1(PO4)(3)/C could still remain as high as 93.46% at 1C. From the morphology determination and analysis of kinetic properties, it was confirmed that the excellent electrochemical performance of Na3V1.9Y0.1(PO4)(3)/C was mainly due to the enhanced intrinsic electronic conductivity and Na ion mobility caused by introducing a moderate amount of Y to replace the V sites in the NVPF crystal structure. In order to get a better understanding of the relationship between the kinetic properties and the electrochemical performance in a sodium ion battery, a mass and electron transfer process model has been proposed for the first time in the present research. |
| 语种 | 英语 |
| WOS记录号 | WOS:000402734600018 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/152191]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 2.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wanqiu,Yi, Hongming,Zheng, Qiong,et al. Y-Doped Na3V2(PO4)(2)F-3 compounds for sodium ion battery cathodes: electrochemical performance and analysis of kinetic properties[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5:10928-10935. |
| APA | Liu, Wanqiu,Yi, Hongming,Zheng, Qiong,Li, Xianfeng,&Zhang, Huamin.(2017).Y-Doped Na3V2(PO4)(2)F-3 compounds for sodium ion battery cathodes: electrochemical performance and analysis of kinetic properties.JOURNAL OF MATERIALS CHEMISTRY A,5,10928-10935. |
| MLA | Liu, Wanqiu,et al."Y-Doped Na3V2(PO4)(2)F-3 compounds for sodium ion battery cathodes: electrochemical performance and analysis of kinetic properties".JOURNAL OF MATERIALS CHEMISTRY A 5(2017):10928-10935. |
入库方式： OAI收割
来源：大连化学物理研究所
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