文献类型：期刊文献

英文题名：Preparation and Rate Capability of Carbon Coated LiNi1/3Co1/3Mn1/3O2 as Cathode Material in Lithium Ion Batteries

作者：Yang, Chaofan[1];Zhang, Xiaosong[1];Huang, Mengyi[1];Huang, Junjie[1];Fang, Zebo[2]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Math Informat Coll, Shaoxing 312000, Peoples R China

年份：2017

卷号：9

期号：14

起止页码：12408

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：SCI-EXPANDED(收录号：WOS:000399354100029)、、WOS

基金：Financial supports from the program of the National Natural Science Foundation of China (51272159), the Natural Science Foundation of Zhejiang province (LY15A040001), Zhejiang provincial key research project (2015C01G2180002) and science technology bureau of Shaoxing (2014B70016) are gratefully acknowledged.

语种：英文

外文关键词：LiNi1/3Co1/3Mn1/3O2; active carbon; coating; cathode; lithium ion battery

外文摘要：LiNi1/3Co1/3Mn1/3O2 (NCM) is regarded as a promising material for next-generation lithium ion batteries due to the high capacity, but its practical applications are limited by the poor electronic conductivity. Here, a one-step method is used to prepare carbon coated LiNi1/3Co1/3Mn1/3O2 (NCM/C) by applying active carbon as reaction matrix. TEM shows LiNi1/3Co1/3Mn1/3O2 particles are homogeneously coated by carbon with a thickness about 10 nm. NCM/C delivers the discharge capacity of 191.2 mAh g(-1) at 0.5 C (85 mA g(-1)) with a columbic efficiency of 91.1%. At 40 C (6800 mA g(-1)), the discharge capacity of NCM/C is 54.6 mAh g(-1), whereas NCM prepared through sol-gel route only delivers 13.2 mAh g(-1). After 100 charge and discharge cycles at 1 C (170 mA g(-1)) the capacity retention is 90.3% for NCM/C, whereas it is only 72.4% for NCM. The superior charge/discharge performance of NCM/C owes much to the carbon coating layer, which is not only helpful to increase the electronic conductivity but also contributive to inhibit the side reactions between LiNi1/3Co1/3Mn1/3O2 and the liquid electrolyte.