Surface modification with oxygen vacancy in Li-rich layered oxide Li1.2Mn0.54Ni0.13Co0.13O2 for lithium-ion batteries
文献类型：期刊论文
| 作者 | Bozhou Chen2; Bangchuan Zhao2 ; Jiafeng Zhou2; Zhitang Fang2; Yanan Huang2; Xuebin Zhu2; Yuping Sun2
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| 刊名 | 材料科学技术学报:英文版
 |
| 出版日期 | 2019 |
| 卷号 | 035 |
| 关键词 | Li-rich cathode oxide material Oxygen vacancy Solvothermal method Electrochemical performance |
| ISSN号 | 1005-0302 |
| 其他题名 | Surface modification with oxygen vacancy in Li-rich layered oxide Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2 for lithium-ion batteries |
| 英文摘要 | A couple of layered Li-rich cathode materials Li1.2Mn0.54Ni0.13Co0.13O2 without any carbon modification are successfully synthesized by solvothermal and hydrothermal methods followed by a calcination process. The sample synthesized by the solvothermal method(S-NCM) possesses more homogenous microstructure, lower cation mixing degree and more oxygen vacancies on the surface, compared to the sample prepared by the hydrothermal method(H-NCM). The S-NCM sample exhibits much better cycling performance, higher discharge capacity and more excellent rate performance than H-NCM. At 0.2 C rate,the S-NCM sample delivers a much higher initial discharge capacity of 292.3 mAh g^-1 and the capacity maintains 235 m Ah g^-1 after 150 cycles(80.4% retention), whereas the corresponding capacity values are only 269.2 and 108.5 m Ah g^-1(40.3% retention) for the H-NCM sample. The S-NCM sample also shows the higher rate performance with discharge capacity of 118.3 mAh g^-1 even at a high rate of 10 C, superior to that(46.5 m Ah g^-1) of the H-NCM sample. The superior electrochemical performance of the S-NCM sample can be ascribed to its well-ordered structure, much larger specific surface area and much more oxygen vacancies located on the surface. |
| 语种 | 中文 |
| CSCD记录号 | CSCD:6531397 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/98497]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 1.University of Science and Technology of China, Hefei 2.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 3.High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei |
| 推荐引用方式 GB/T 7714 | Bozhou Chen,Bangchuan Zhao,Jiafeng Zhou,et al. Surface modification with oxygen vacancy in Li-rich layered oxide Li1.2Mn0.54Ni0.13Co0.13O2 for lithium-ion batteries[J]. 材料科学技术学报:英文版,2019,035. |
| APA | Bozhou Chen.,Bangchuan Zhao.,Jiafeng Zhou.,Zhitang Fang.,Yanan Huang.,...&Yuping Sun.(2019).Surface modification with oxygen vacancy in Li-rich layered oxide Li1.2Mn0.54Ni0.13Co0.13O2 for lithium-ion batteries.材料科学技术学报:英文版,035. |
| MLA | Bozhou Chen,et al."Surface modification with oxygen vacancy in Li-rich layered oxide Li1.2Mn0.54Ni0.13Co0.13O2 for lithium-ion batteries".材料科学技术学报:英文版 035(2019). |
入库方式： OAI收割
来源：合肥物质科学研究院
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