Fabrication of Fe‐Doped LiCoO2 Sandwich‐Like Nanocomposites as Excellent Performance Cathode Materials for Lithium‐Ion Batteries |
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| Authors: | Li Liu Dr. Huijuan Zhang Jiao Yang Yanping Mu Prof. Dr. Yu Wang |
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| Affiliation: | The State Key Laboratory of Mechanical Transmissions and the School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044 (P.R. China) |
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| Abstract: | In this article, the two‐layer sandwiched graphene@LiFe0.2Co0.8O2 nanoparticles (SG@LFCO) have been prepared and investigated as high‐rate and long‐life cathode materials for rechargeable lithium‐ion batteries. The materials possess a high‐surface area (267.1 m2 g?1) and lots of void spaces. By combining various favorable conditions, such as Fe doping, coating graphene, and designing novel morphology, the as‐prepared materials deliver a specific capacity of 115 mAh g?1 at 10 C. At the 0.1 C cycling rate, the capacity retention of 97.2 % is sustained after 250 cycles and a coulombic efficiency of around 97.6 % is obtained. |
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| Keywords: | cathode Fe doping graphene lithium‐ion battery sandwiched |
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