title: Porous cubes constructed by cobalt oxide nanocrystals with graphene sheet coatings for enhanced lithium storage properties.
abstract: In this manuscript, graphene-encapsulated porous cobalt oxide cubes (Co3O4@G) are fabricated through a facile precipitation reaction with subsequent calcination and a self-assembly process. The synthesized porous Co3O4 cubes anchored in the conductive graphene network can realize superior electrical conductivity, withstand volume variation upon prolonged cycling and shorten the diffusion path of lithium ions. When evaluated as anode materials, the Co3O4@G electrode shows excellent electrochemical properties in terms of both stable cycling performance and good rate capabilities. For example, a reversible discharge capacity of 980 mA h g(-1) is delivered after 80 cycles at a current density of 200 mA g(-1). Introducing a conductive graphene network to modify other metal oxides with poor electric conductivity and large volume excursions is of great interest in the development of lithium ion battery technologies.
authors.affiliation: Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China. hongwei@suda.edu.cn and School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Geng
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Guo
authors.affiliation: i-Lab and Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China.
authors.forename: Xianguang
authors.initials: X
authors.lastname: Ding
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Huangwen
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Yufei
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
authors.forename: Xinglong
authors.initials: X
authors.lastname: Wu
authors.affiliation: i-Lab and Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Jiang
authors.affiliation: College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, 215006, China.
authors.forename: Junwei
authors.initials: J
authors.lastname: Zheng
authors.affiliation: Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China. hongwei@suda.edu.cn.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China. hongwei@suda.edu.cn.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Gu