title: Carbon Quantum Dot Surface-Engineered VO2 Interwoven Nanowires: A Flexible Cathode Material for Lithium and Sodium Ion Batteries.
abstract: The use of electrode materials in their powdery form requires binders and conductive additives for the fabrication of the cells, which leads to unsatisfactory energy storage performance. Recently, a new strategy to design flexible, binder-, and additive-free three-dimensional electrodes with nanoscale surface engineering has been exploited in boosting the storage performance of electrode materials. In this paper, we design a new type of free-standing carbon quantum dot coated VO2 interwoven nanowires through a simple fabrication process and demonstrate its potential to be used as cathode material for lithium and sodium ion batteries. The versatile carbon quantum dots that are vastly flexible for surface engineering serve the function of protecting the nanowire surface and play an important role in the diffusion of electrons. Also, the three-dimensional carbon cloth coated with VO2 interwoven nanowires assisted in the diffusion of ions through the inner and the outer surface. With this unique architecture, the carbon quantum dot nanosurface engineered VO2 electrode exhibited capacities of 420 and 328 mAh g(-1) at current density rate of 0.3 C for lithium and sodium storage, respectively. This work serves as a milestone for the potential replacement of lithium ion batteries and next generation postbatteries.
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Muhammad-Sadeeq
authors.initials: MS
authors.lastname: Balogun
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Luo
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Feiyi
authors.initials: F
authors.lastname: Lyu
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Fuxin
authors.initials: F
authors.lastname: Wang
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Yang
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Li
authors.affiliation: Instrumental Analysis and Research Centre, Sun Yat-Sen University , Guangzhou 510275, People's Republic of China.
authors.forename: Chaolun
authors.initials: C
authors.lastname: Liang
authors.affiliation: EVE Energy Co., Ltd. , Huifeng seventh Road, Zhongkai Hi-Tech Zone, Huizhou Town, Guangdong 516006, People's Republic of China.
authors.forename: Miao
authors.initials: M
authors.lastname: Huang
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.|Department of Chemistry, Shantou University , Guangdong 515063, P. R. China.
authors.forename: Yongchao
authors.initials: Y
authors.lastname: Huang
authors.affiliation: KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , 135 Xingang West Road, Chemical North Building 325, Guangzhou 510275, China.|Department of Chemistry, Shantou University , Guangdong 515063, P. R. China.
authors.forename: Yexiang
authors.initials: Y
authors.lastname: Tong
keywords: VO2; carbon quantum dot; lithium ion batteries; sodium ion batteries; surface engineering