电子元件与材料2017，Vol.36Issue(2)：45-49,5.DOI:10.14106/j.cnki.1001-2028.2017.02.010
碱活化石墨烯对磷酸铁锂电化学性能的影响
Effect of chemically activated grapheneon electrochemical performance of LiFePO4lithium-ion battery
摘要
Abstract
Chemically activated graphene(CA-G)was prepared by KOH etching. The LiFePO4/CA-G(LFP/CA-G) composite marterial was successfully prepared by solid-state method,characterized by SEM, Raman, XRDand electrochemicalanalysis.The results reveal thatthe obtained LFP/CA-G has excellent cycling stabilityand the capacity retention is near 100% after 50 cyclesat 1C. The initial discharge capacity is 158.8 mAh/g at 0.2C, increased by 3.1 mAh/g than that of LiFePO4/graphene(LFP/G).Thedischarge capacityrate of3Cis139 mAh/g, increased by 7 mAh/g than thatof LFP/G. The LFP/CA-G electrode has smaller resistance and betterreversibility. That is because the LFP/CA-G electrode provides abundant porous channels for the diffusion of lithium ions.关键词
磷酸铁锂/固相法/碱活化石墨烯/复合材料/倍率性能/电化学性能Key words
LiFePO4/solid state method/chemically activated graphene/composite/rate performance/electrochemical performance分类
信息技术与安全科学引用本文复制引用
何湘柱,邓忠德,胡燚,孔令涌,尚伟丽..碱活化石墨烯对磷酸铁锂电化学性能的影响[J].电子元件与材料,2017,36(2):45-49,5.基金项目
广东省战略性新兴产业发展专项基金资助(No.2012BZ100104)；深圳市第四批战略性新兴产业发展专项资金资助(No. ZD201111070091A) （No.2012BZ100104）
