Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries
A lithium-rich manganese-based cathode material, Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2, was prepared using a polyvinyl alcohol (PVA)-auxiliary sol-gel process using MnO2 as a template. The effect of the PVA content (0.0–15.0 wt%) on the electrochemical properties and morphology of Li1.25Ni0.2Co0.333Fe0...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/1217639 |
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| author | He Wang Mingning Chang Yonglei Zheng Ningning Li Siheng Chen Yong Wan Feng Yuan Weiquan Shao Sheng Xu |
| author_facet | He Wang Mingning Chang Yonglei Zheng Ningning Li Siheng Chen Yong Wan Feng Yuan Weiquan Shao Sheng Xu |
| author_sort | He Wang |
| collection | DOAJ |
| description | A lithium-rich manganese-based cathode material, Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2, was prepared using a polyvinyl alcohol (PVA)-auxiliary sol-gel process using MnO2 as a template. The effect of the PVA content (0.0–15.0 wt%) on the electrochemical properties and morphology of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 was investigated. Analysis of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 X-ray diffraction patterns by RIETAN-FP program confirmed the layered α-NaFeO2 structure. The discharge capacity and coulombic efficiency of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 in the first cycle were improved with increasing PVA content. In particular, the best material reached a first discharge capacity of 206.0 mAhg−1 and best rate capability (74.8 mAhg−1 at 5 C). Meanwhile, the highest capacity retention was 87.7% for 50 cycles. Finally, electrochemical impedance spectroscopy shows that as the PVA content increases, the charge-transfer resistance decreases. |
| format | Article |
| id | doaj-art-7baeca5a857b4c0ebe4cc1d3188656ac |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-7baeca5a857b4c0ebe4cc1d3188656ac2025-02-03T01:32:08ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/12176391217639Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion BatteriesHe Wang0Mingning Chang1Yonglei Zheng2Ningning Li3Siheng Chen4Yong Wan5Feng Yuan6Weiquan Shao7Sheng Xu8College of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaA lithium-rich manganese-based cathode material, Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2, was prepared using a polyvinyl alcohol (PVA)-auxiliary sol-gel process using MnO2 as a template. The effect of the PVA content (0.0–15.0 wt%) on the electrochemical properties and morphology of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 was investigated. Analysis of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 X-ray diffraction patterns by RIETAN-FP program confirmed the layered α-NaFeO2 structure. The discharge capacity and coulombic efficiency of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 in the first cycle were improved with increasing PVA content. In particular, the best material reached a first discharge capacity of 206.0 mAhg−1 and best rate capability (74.8 mAhg−1 at 5 C). Meanwhile, the highest capacity retention was 87.7% for 50 cycles. Finally, electrochemical impedance spectroscopy shows that as the PVA content increases, the charge-transfer resistance decreases.http://dx.doi.org/10.1155/2018/1217639 |
| spellingShingle | He Wang Mingning Chang Yonglei Zheng Ningning Li Siheng Chen Yong Wan Feng Yuan Weiquan Shao Sheng Xu Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries Advances in Condensed Matter Physics |
| title | Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries |
| title_full | Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries |
| title_fullStr | Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries |
| title_full_unstemmed | Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries |
| title_short | Improved Electrochemical Performance of Li1.25Ni0.2Co0.333Fe0.133Mn0.333O2 Cathode Material Synthesized by the Polyvinyl Alcohol Auxiliary Sol-Gel Process for Lithium-Ion Batteries |
| title_sort | improved electrochemical performance of li1 25ni0 2co0 333fe0 133mn0 333o2 cathode material synthesized by the polyvinyl alcohol auxiliary sol gel process for lithium ion batteries |
| url | http://dx.doi.org/10.1155/2018/1217639 |
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