title: Large Scale Synthesis of NiCo Layered Double Hydroxides for Superior Asymmetric Electrochemical Capacitor.
abstract: We report a new environmentally-friendly synthetic strategy for large-scale preparation of 16 nm-ultrathin NiCo based layered double hydroxides (LDH). The Ni50Co50-LDH electrode exhibited excellent specific capacitance of 1537 F g(-1) at 0.5 A g(-1) and 1181 F g(-1) even at current density as high as 10 A g(-1), which 50% cobalt doped enhances the electrical conductivity and porous and ultrathin structure is helpful with electrolyte diffusion to improve the material utilization. An asymmetric ultracapacitor was assembled with the N-doped graphitic ordered mesoporous carbon as negative electrode and the NiCo LDH as positive electrode. The device achieves a high energy density of 33.7 Wh kg(-1) (at power density of 551 W kg(-1)) with a 1.5 V operating voltage.
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Ruchun
authors.initials: R
authors.lastname: Li
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Zhaoxia
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Shao
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Cheng
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Shoushou
authors.initials: S
authors.lastname: Li
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Wendan
authors.initials: W
authors.lastname: Yu
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Worong
authors.initials: W
authors.lastname: Lin
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Dingsheng
authors.initials: D
authors.lastname: Yuan