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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.

SUBMITTER: Li R

PROVIDER: S-EPMC4709638 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Large Scale Synthesis of NiCo Layered Double Hydroxides for Superior Asymmetric Electrochemical Capacitor.

Li Ruchun R Hu Zhaoxia Z Shao Xiaofeng X Cheng Pengpeng P Li Shoushou S Yu Wendan W Lin Worong W Yuan Dingsheng D

Scientific reports 20160112

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 ul ...[more]

PMID: 26754281

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