Oxalic acid-assisted preparation of LiFePO4/C cathode material for lithium-ion batteries
文献类型：期刊论文
| 作者 | Dou Junqing; Kang Xueya; Wumaier Tuerdi; Hua Ning; Han Ying; Xu Guoqing |
| 刊名 | JOURNAL OF SOLID STATE ELECTROCHEMISTRY
 |
| 出版日期 | 2012 |
| 卷号 | 16期号:5页码:1925-1931 |
| 关键词 | Oxalic acid Cathode Lithium iron phosphate Li-ion batteries |
| ISSN号 | 1432-8488 |
| 通讯作者 | Kang, XY |
| 中文摘要 | LiFePO4/C composite is synthesized by oxalic acid-assisted rheological phase method. Fe2O3 and LiH2PO4 are chosen as the starting materials, sucrose as carbon sources, and oxalic acid as the additive. The crystalline structure and morphology of the products are characterized by X-ray diffraction and field emission scanning electron microscopy. The charge-discharge kinetics of LiFePO4 electrode is investigated using cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the introduction of appropriate amount of oxalic acid leads to smaller particle sizes, more homogeneous size distribution, and some Fe2P produced in the final products, resulting in reduced polarization, impedance, and improved Li+ ion diffusion coefficient. The best cell performance is delivered by the sample with R = 1.5 (R of the molar ratio of oxalic acid to LiH2PO4). Its discharge capacity is 154 mAh g(-1) at 0.2 C rate and 120 mAh g(-1) at 5.0 C rate. At the same time, it exhibits an excellent cycling stability; no obvious decrease even after 1,000 cycles at 1.0 C rate. |
| 学科主题 | Electrochemistry |
| 收录类别 | SCI |
| 资助信息 | West Light Foundation of the Chinese Academy of Sciences XB200919; Chinese Academy of Sciences 20092A401; Urumqi K111410005 |
| 公开日期 | 2013-11-07 |
| 源URL | [http://ir.xjipc.cas.cn/handle/365002/2813]  |
| 专题 | 新疆理化技术研究所_新疆维吾尔自治区电子信息材料与器件重点实验室 |
| 作者单位 | Xinjiang Key Labs Elect Informat Mat & Devices, Urumqi 830011, Xinjiang, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Xinjiang, Peoples R China; Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dou Junqing,Kang Xueya,Wumaier Tuerdi,et al. Oxalic acid-assisted preparation of LiFePO4/C cathode material for lithium-ion batteries[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2012,16(5):1925-1931. |
| APA | Dou Junqing,Kang Xueya,Wumaier Tuerdi,Hua Ning,Han Ying,&Xu Guoqing.(2012).Oxalic acid-assisted preparation of LiFePO4/C cathode material for lithium-ion batteries.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,16(5),1925-1931. |
| MLA | Dou Junqing,et al."Oxalic acid-assisted preparation of LiFePO4/C cathode material for lithium-ion batteries".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 16.5(2012):1925-1931. |
入库方式： OAI收割
来源：新疆理化技术研究所
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。