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	Al_2O_3包覆LiCoO_2对4.35V锂离子电池性能的影响
	王珍珍 ; 郭密 ; 陈宇 ; 江卫军 ; WANG Zhen-zhen ; GUO Mi ; CHEN Yu ; JIANG Wei-jun
	2016-03-30 ; 2016-03-30
关键词	钴酸锂(LiCoO2) 包覆 三氧化二铝(Al2O3) 锂离子电池 lithium cobalt oxide(LiCoO2) coating aluminium oxide(Al2O3) Li-ion battery TM912.9
其他题名	Effects of Al_2O_3 coating LiCoO_2 on performance of 4. 35 V Li-ion battery
中文摘要	用固相法对钴酸锂(LiCoO2)正极材料进行纳米三氧化二铝(Al2O3)表面包覆,在充电终止电压为4.35 V时分析制备的495060AR型锂离子电池的性能。在放电截止电压为3.00 V时,以0.5 C放电,包覆、未包覆LiCoO2的比容量分别为167.6 mAh/g、170.9 mAh/g,平均电压分别为3.763 V、3.776 V;常温下1.0 C循环200次,包覆、未包覆LiCoO2的容量保持率分别为94.46%、96.40%。在55℃、48 h储存测试中,包覆LiCoO2制备的电池表现出更好的环境适应性;包覆LiCoO2制备的电池在高温45℃下以0.5 C循环200次,容量保持率为93.50%。对电池进行过充、热冲击测试,均未起火、爆炸。; Lithium cobalt oxide( LiCoO2) was surface coated with aluminium oxide( Al2O3) by solid state method. The performance of prepared 495060AR type Li-ion battery was analyzed under the charge cut-off voltage of 4. 35 V. While the discharge cut-off voltage was 3. 00 V,when discharged with 0. 5 C,the specific discharge capacity of coated and uncoated LiCoO2was 167. 6 mAh /g and 170. 9 mAh /g,respectively,the average voltage was 3. 763 V and 3. 776 V,respectively. When cycled 200 times at 1. 0 C under normal temperature,the capacity retention of coated and uncoated LiCoO2was 94. 46% and 96. 40%,respectively. The better environmental adaptability was shown for battery prepared with coated LiCoO2under 55 ℃,48 h storage test. When cycled 200times at 0. 5 C under high temperature of 45 ℃,the capacity retention of battery prepared with coated LiCoO2was 93. 50%. The battery neither caught fire nor exploded in the test of overcharge and thermal shock.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/145924]
专题	清华大学
推荐引用方式 GB/T 7714	王珍珍,郭密,陈宇,等. Al_2O_3包覆LiCoO_2对4.35V锂离子电池性能的影响[J],2016, 2016.
APA	王珍珍.,郭密.,陈宇.,江卫军.,WANG Zhen-zhen.,...&JIANG Wei-jun.(2016).Al_2O_3包覆LiCoO_2对4.35V锂离子电池性能的影响..
MLA	王珍珍,et al."Al_2O_3包覆LiCoO_2对4.35V锂离子电池性能的影响".(2016).

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