标题:Mn3O4/Ni(OH)2nanocomposite as an applicable electrode material for pseudocapacitors
作者:Wang, Hong-Yan ;Li, Deng-Gong ;Zhu, Hui-Ling ;Qi, Yong-Xin ;Li, Hui ;Lun, Ning ;Bai, Yu-Jun
作者机构:[Wang, Hong-Yan ;Qi, Yong-Xin ;Li, Hui ;Lun, Ning ;Bai, Yu-Jun ] Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Minis 更多
通讯作者:Lun, Ning
来源:Electrochimica Acta
出版年:2017
卷:249
页码:155-165
DOI:10.1016/j.electacta.2017.08.015
摘要:Mn3O4/Ni(OH)2nanocomposites are simply synthesized by a hydrothermal reaction between MnCl2.4H2O, NiCl2.6H2O and NaOH at 200 °C. Compared with the individual Ni(OH)2and Mn3O4prepared under the same conditions, the Mn3O4/Ni(OH)2composite hydrothermally treated for 5 h achieves excellent specific capacitance (707 F g−1at 1 A g−1in 1 M KOH electrolyte) and remarkable long-term cycling stability (retaining a capacitance retention of 89% after 2000 cycles at 2 A g−1). Meanwhile, the asymmetric supercapacitor constructed by the Mn3O4/Ni(OH)2composite and active carbon delivers an energy density of 17.8 W h kg−1at a power density of 162 W kg−1The outstanding performance is attributable to the synergistic compositing effect of Mn3O4and Ni(OH)2, yielding not only the mutual doping of Mn3+in Ni(OH)2and Ni2+in Mn3O4to improve the electronic conductivity of the Mn3O4/Ni(OH)2composite but also the suitable mesoporous structure for electrolyte transfer. Thus the Mn3O4/Ni(OH)2composites will be alternative candidates as practical electrode materials for pseudocapacitors.
© 2017 Elsevier Ltd
收录类别:EI
资源类型:期刊论文
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