A Bi-doped Li3V2(PO4)(3)/C cathode material with an enhanced high-rate capacity and long cycle stability for lithium ion batteries
文献类型：期刊论文
| 作者 | Cheng, Yi1,2; Feng, Kai1; Zhou, Wei1,2; Zhang, Hongzhang1; Li, Xianfeng1,3; Zhang, Huamin1,3 |
| 刊名 | dalton transactions
 |
| 出版日期 | 2015 |
| 卷号 | 44期号:40页码:17579-17586 |
| 英文摘要 | bi-doped compounds li3v2-xbix(po4)(3)/c (x = 0, 0.01, 0.03, 0.05, 0.07) are prepared by a sol-gel method. the effects of bi doping on the physical and electrochemical properties of li3v2(po4)(3) are investigated. x-ray diffraction (xrd) analysis indicates that bi doping does not change the monoclinic structure of li3v2(po4)(3). a detailed analysis of the xrd patterns suggests that bi3+ ions partly enter into the crystal structure of li3v2(po4)(3) and enlarge the lattice volume of li3v2(po4)(3). according to the results of cycle and rate performance measurements, moderate bi3+ doping is beneficial in improving the electrochemical properties of li3v2(po4)(3). among all the samples, li3v1.97bi0.03(po4)(3)/c shows the best cycle and rate performance. at 3.0-4.3 v, the initial discharge capacity of li3v1.97bi0.03(po4)(3)/c is as high as 130 ma h g(-1), close to the theoretical specific capacity of 133 ma h g(-1). the capacity retention of li3v1.97bi0.03(po4)(3)/c is almost 100% after 100 cycles at 3.0-4.3 v. in addition, li3v1.97bi0.03(po4)(3)/c exhibits excellent low-temperature and high-rate performance. impedance spectroscopy (eis) and cyclic voltammetry (cv) curves indicate lower charge transfer resistance and a larger li ion diffusion rate of li3v1.97bi0.03(po4)(3)/c than the primary li3v2(po4)(3)/c. the excellent electrochemical performance of li3v1.97bi0.03(po4)(3)/c can be attributed to its larger li ion diffusion channels, higher electronic conductivity, higher structural stability and smaller particle size. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, inorganic & nuclear |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | electrochemical performance ; hydrothermal synthesis ; behavior ; fe ; composite ; limn2o4 ; mn ; ti |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362362500018 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146580]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Yi,Feng, Kai,Zhou, Wei,et al. A Bi-doped Li3V2(PO4)(3)/C cathode material with an enhanced high-rate capacity and long cycle stability for lithium ion batteries[J]. dalton transactions,2015,44(40):17579-17586. |
| APA | Cheng, Yi,Feng, Kai,Zhou, Wei,Zhang, Hongzhang,Li, Xianfeng,&Zhang, Huamin.(2015).A Bi-doped Li3V2(PO4)(3)/C cathode material with an enhanced high-rate capacity and long cycle stability for lithium ion batteries.dalton transactions,44(40),17579-17586. |
| MLA | Cheng, Yi,et al."A Bi-doped Li3V2(PO4)(3)/C cathode material with an enhanced high-rate capacity and long cycle stability for lithium ion batteries".dalton transactions 44.40(2015):17579-17586. |
入库方式： OAI收割
来源：大连化学物理研究所
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