硅酸盐学报2016，Vol.44Issue(10)：1415-1420,6.DOI:10.14062/j.issn.0454-5648.2016.10.04
络合剂对溶胶-凝胶法制备LiNi0.80Co0.15Al0.05O2正极材料电化学性能影响
Effect of Complexing Agent on Electrochemical Performance of LiNi0.80Co0.15Al0.05O2 Cathode Materials Prepared by Sol-gel Method
摘要
Abstract
LiNi0.80Co0.15Al0.05O2 (NCA) cathode materials were prepared by a sol–gel method using maleic acid, glycine or citric acid as complexing agent. The microstructure and morphology of the cathode materials were characterized by X–ray diffraction and scanning electron microscopy(SEM). The electrochemical properties, i.e., galvanostatic charge–discharge capacity, cyclic voltammetry, and cycling performance were determined. XRD analysis demonstrates that all the samples prepared using different complexing agents present a hexagonalα–NaFeO2 layered structure with the space groupR3m. SEM observation reveals that, the sample prepared using citrate has the more octahedral single crystals. For the NCA cathode material prepared using maleic acid, its initial discharge capacities of are 176 mA·h/g at 0.2C and 162 mA·h/g at 1C, respectively; after 30 cycles, the capacity retention rate is 97.3% for 0.2C and 92.3% for 1C, respectively.关键词
溶胶-凝胶/络合剂/马来酸/电化学性能Key words
sol-gel/complexing agents/maleic acid/electrochemical properties引用本文复制引用
董鹏,夏书标,张英杰,邱振平,张雁南,徐明丽..络合剂对溶胶-凝胶法制备LiNi0.80Co0.15Al0.05O2正极材料电化学性能影响[J].硅酸盐学报,2016,44(10):1415-1420,6.基金项目
国家自然科学基金项目(51364021，51264016)；云南省自然科学基金项目(2014FA025)。 （51364021，51264016）
