化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (6) : 168-171. DOI: 10.19817/j.cnki.issn1006-3536.2022.06.033

科学研究

通过预煅烧提高富镍LiNi_0.9Co_0.08Al_0.02O₂材料性能研究

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Improvement of the property of nickel-rich LiNi_0.9Co_0.08Al_0.02O₂ material by precalcination

Huang Huixing^1,2, Xu Yunhua^1,2, Wang Juan^1,2

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Received
2021-03-10
Issue Date	Revised Date
2022-07-06	2021-03-10

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摘要

采用高温热处理法制备了LiNi_0.9Co_0.08Al_0.02O₂正极材料,研究了预煅烧温度对材料形貌结构和电化学性能的影响。结果表明:材料在经过400℃预煅烧后,具有最佳的形貌结构和电化学性能。其中,在经过预煅烧400℃氧化后材料的电化学性能有了很大的提升,在0.1C下的可逆比容量达到213mAh/g,在5C下循环100圈后比容量仍可以达到93mAh/g,具有良好的速率性能。

Abstract

LiNi_0.9Co_0.08Al_0.02O₂ cathode materials were prepared by high-temperature heat treatment.The effects of different precalcination temperatures on the morphology and electrochemical performance of the materials were studied.The results shown:the materials had the best morphology,structure and electrochemical performance after being precalcined at 400℃.Among them,the electrochemical performance of the materials optimized after precalcination at 400℃ were greatly improved.The reversible specific capacity at 0.1C can reach 213mAh/g,and the specific capacity can still reach 93mAh/g after 100 cycles at 5C,the materials had good rate performance.

关键词

三元正极材料 / 前驱体预处理 / 形貌测试 / 电化学性能

Key words

ternary cathode material / precursor pretreatment / morphology test / electrochemical performance

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通过预煅烧提高富镍LiNi_0.9Co_0.08Al_0.02O₂材料性能研究[J]. 化工新型材料, 2022, 50(6): 168-171 DOI:10.19817/j.cnki.issn1006-3536.2022.06.033

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基金资助

国家自然科学基金(212174和51202179);陕西省教育厅科学基金资助项目(12JS060、18JS058和17JS076);陕西省教育厅自然科学基金资助项目(51305506);陕西省自然科学基金面上项目(2020JM-481);榆林市产学研合作项目(2019-172);陕西省教育厅重点实验室科研计划项目(I8JS060)

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