CAJ | 학술논문

报道了炭包覆锂离子电池正极材料 LiNi1/3Mn1/3Co1/3O2的新工艺。炭涂层由前驱体葡萄糖通过微波热解而形成。采用X射线粉末衍射(XRD)、扫描电镜、X射线荧光测试和恒流充放电测试来表征所制备的材料。XRD结果表明，炭包覆没有改变LiNi1/3Mn1/3Co1/3O2材料的相结构。SEM结果表明，炭包覆的LiNi1/3Mn1/3Co1/3O2颗粒表面变得粗糙。充放电测试结果显示，炭包覆的 LiNi1/3Mn1/3Co1/3O2的循环性能与未包覆的相比得到提高。炭包覆的LiNi1/3Mn1/3Co1/3O2在0.2C倍率下循环50次的容量保持率由84.8%提升到95.5%，且高倍率下材料的容量保持率得到提高。
보도료탄포복리리자전지정겁재료 LiNi1/3Mn1/3Co1/3O2적신공예。탄도층유전구체포도당통과미파열해이형성。채용X사선분말연사(XRD)、소묘전경、X사선형광측시화항류충방전측시래표정소제비적재료。XRD결과표명，탄포복몰유개변LiNi1/3Mn1/3Co1/3O2재료적상결구。SEM결과표명，탄포복적LiNi1/3Mn1/3Co1/3O2과립표면변득조조。충방전측시결과현시，탄포복적 LiNi1/3Mn1/3Co1/3O2적순배성능여미포복적상비득도제고。탄포복적LiNi1/3Mn1/3Co1/3O2재0.2C배솔하순배50차적용량보지솔유84.8%제승도95.5%，차고배솔하재료적용량보지솔득도제고。
A novel synthesis method of carbon-coated LiNi1/3Mn1/3Co1/3O2 cathode material for lithium-ion battery was reported. The carbon coating was produced from a precursor, glucose, by microwave-pyrolysis method. The prepared powders were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence (XRF) and charge/discharge tests. XRD results indicate that the carbon coating does not change the phase structure of LiNi1/3Mn1/3Co1/3O2 material. SEM results show that the surface of spherical carbon-coated material becomes rough. Electrochemical performance results show that the carbon coating can improve the cycling performance of LiNi1/3Mn1/3Co1/3O2. The specific discharge capacity retention of the carbon-coated LiNi1/3Mn1/3Co1/3O2 reached 85.0%?96.0%at the 50th cycle at 0.2C rate, and the specific discharge capacity retention is improved at a high rate.