Nickel Phosphite Superstructures Assembled by Nanotubes: Original Application for Effective Electrode Materials of Supercapacitors | Zendy

Pang Huan | Zendy; Wei Chengzhen | Zendy; Ma Yahui | Zendy; Zhao Shanshan | Zendy; Li Guochang | Zendy; Zhang Jiangshan | Zendy; Chen Jing | Zendy; Li Sujuan | Zendy

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Nickel Phosphite Superstructures Assembled by Nanotubes: Original Application for Effective Electrode Materials of Supercapacitors

Author(s) -

Pang Huan,

Wei Chengzhen,

Ma Yahui,

Zhao Shanshan,

Li Guochang,

Zhang Jiangshan,

Chen Jing,

Li Sujuan

Publication year - 2013

Publication title -

chempluschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.801

H-Index - 61

ISSN - 2192-6506

DOI - 10.1002/cplu.201300015

Subject(s) - supercapacitor , materials science , nickel , nanosheet , electrode , capacitance , superstructure , chemical engineering , hydrothermal synthesis , polystyrene , sulfonic acid , nanotube , nanotechnology , hydrothermal circulation , inorganic chemistry , chemistry , polymer chemistry , composite material , carbon nanotube , metallurgy , oceanography , geology , engineering , polymer

Nickel phosphite (Ni 11 (HPO 3 ) 8 (OH) 6 ) superstructures assembled by nanotubes are synthesized under mild hydrothermal conditions with the sodium salt of polystyrene sulfonic acid. More importantly, Ni 11 (HPO 3 ) 8 (OH) 6 superstructures are applied as electrode materials for supercapacitors. Benefitting from their novel superstructures, in a three‐electrode system, Ni 11 (HPO 3 ) 8 (OH) 6 superstructure electrodes show a good specific capacitance (1876 F g −1 at 0.625 A g −1 ), good rate capability, and excellent cycling properties (95 % of the initial specific capacitance at 6.25 A g −1 after 2000 cycles) in 3.0 M KOH. Additionally, asymmetric Ni 11 (HPO 3 ) 8 (OH) 6 –graphene nanosheet supercapacitors are also designed. The specific energy of a cell in 3.0 M KOH reaches about 28.6 Wh kg −1 at 92.5 W kg −1 .

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