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Synthesis of Micro/Nano‐Flower Ni X Co−P−O for High‐Performance Electrochemical Supercapacitors
Author(s) -
Hu Jun,
Yang Ping,
Wang Shaohua,
Shi Jianjun
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801714
Subject(s) - supercapacitor , materials science , capacitance , electrochemistry , electrode , nano , nanomaterials , power density , nanotechnology , carbon fibers , morphology (biology) , capacitor , chemical engineering , composite material , voltage , composite number , chemistry , electrical engineering , power (physics) , physics , engineering , quantum mechanics , biology , genetics
Micro/nanomaterials consisting of Ni Χ Co−P−O were synthesized via a facile, one‐pot solvothermal method and then used as positive electrode materials in asymmetric supercapacitors. The obtained Ni x Co−P−O (sample C) electrode materials displayed a typical micro/nano‐flower morphology. A large capacitance of 956 F g −1 could be delivered when Ni x Co−P−O (sample C) composites were used as electrodes in supercapacitors. Furthermore, a high cell voltage (1.8 V), which allowed a high energy density of 47.68 Wh kg −1 at a power density of 884.78 W kg −1 , was obtained using micro/nano‐flowers Ni x Co−P−O (sample C)//activated carbon (AC) in an asymmetric capacitor (ASC). The high electrochemical performance and typical micro/nano‐flower morphology make the Ni x Co−P−O composites (sample C) promising electrode materials for supercapacitors.