超级电容器
材料科学
纳米团簇
剥脱关节
电化学
介孔材料
阴极
石墨烯
阳极
化学工程
图层(电子)
逐层
混合材料
电容
氢氧化物
纳米技术
无机化学
电极
化学
有机化学
催化作用
物理化学
工程类
作者
Navnath S. Padalkar,Shrikant V. Sadavar,Rohini B. Shinde,Akash S. Patil,Umakant M. Patil,Dattatray S. Dhawale,Ravindra N. Bulakhe,Hyungsang Kim,Hyunsik Im,Ajayan Vinu,C.D. Lokhande,Jayavant L. Gunjakar
标识
DOI:10.1016/j.jcis.2022.02.091
摘要
The layer-by-layer mesoporous nanohybrids of Ni-Cr-layered double hydroxide (Ni-Cr-LDH) and polyoxotungstate nanoclusters (Ni-Cr-LDH-POW) are prepared via exfoliation reassembling strategy. The intercalative hybridization of Ni-Cr-LDH with POW nanoclusters leads to forming a layer-by-layer stacking framework with significant expansion of the interplanar spacing and surface area. The aqueous hybrid supercapacitor (AHSC) and all-solid-state hybrid supercapacitor (SSHSC) devices are fabricated using Ni-Cr-LDH-POW nanohybrid as a cathode and reduced graphene oxide (rGO) as an anode material. Notably, the NCW-2//rGO AHSC device delivers an ED of 43 Wh kg-1 at PD of 1.33 kW kg-1 and excellent electrochemical stability over 10,000 charge-discharge cycles. Moreover, NCW-2//rGO SSHSC exhibits an ED of 34 Wh kg-1 at PD of 1.32 kW kg-1 with capacitance retention of 86% after 10,000 cycles. These results highlight the excellent electrochemical functionality and advantages of the Ni-Cr-LDH-POW nanohybrids as a cathode for hybrid supercapacitors.
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