title: Preparation and Rate Capability of Carbon Coated LiNi1/3Co1/3Mn1/3O2as Cathode Material in Lithium Ion Batteries.
abstract: 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 LiNi1/3Co1/3Mn1/3O2particles are homogeneously coated by carbon with a thickness about 10 nm. NCM/C delivers the discharge capacity of 191.2 mAh g-1at 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 LiNi1/3Co1/3Mn1/3O2and the liquid electrolyte.
authors.affiliation: College of Chemistry & Chemical Engineering, Shaoxing University , Shaoxing 312000, People's Republic of China.
authors.forename: Chaofan
authors.initials: C
authors.lastname: Yang
authors.affiliation: College of Chemistry & Chemical Engineering, Shaoxing University , Shaoxing 312000, People's Republic of China.
authors.forename: Xiaosong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: College of Chemistry & Chemical Engineering, Shaoxing University , Shaoxing 312000, People's Republic of China.
authors.forename: Mengyi
authors.initials: M
authors.lastname: Huang
authors.affiliation: College of Chemistry & Chemical Engineering, Shaoxing University , Shaoxing 312000, People's Republic of China.
authors.forename: Junjie
authors.identifier: http://orcid.org/0000-0002-0869-6415
authors.initials: J
authors.lastname: Huang
authors.affiliation: Mathematic Information College, Shaoxing University , Shaoxing 312000, People's Republic of China.
authors.forename: Zebo
authors.initials: Z
authors.lastname: Fang
keywords: LiNi1/3Co1/3Mn1/3O2; active carbon; cathode; coating; lithium ion battery