Hierarchical mesoporous NiO nanoarrays with ultrahigh capacitance for aqueous hybrid supercapacitor

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• 作者：Ge Meng ; Qiu Yang ; Xiaochao Wu ; Pengbo Wan ; Yaping Li ; Xiaodong Lei ; Xiaoming Sun ; Junfeng Liu ; ^{ljf@mail.buct.edu.cn}
• 关键词：Hierarchical ; Mesoporous ; NiO ; Arrays ; Hybrid supercapacitor
• 刊名：Nano Energy
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：30
• 期：Complete
• 页码：831-839
• 全文大小：2604 K
• 卷排序：30

文摘

Hierarchical mesoporous NiO nanoarrays show an ultrahigh specific capacitance beyond its theoretical faradaic capacitance. A self-generated sacrificial template approach was developed to prepare the 3D hierarchical and mesoporous array structure. The ultrahigh capacitance is ascribed to the combination of faradaic and electrical double-layer capacitance. The hybrid supercapacitor made of NiO-HMNAs and MGMs showed a high energy density and outstanding cycleability.