Synthesis of MnO2/NiCo-Layered Double Hydroxide Hybrid as Electrode Materials for Supercapacitor

Synthesis of MnO2/NiCo-Layered Double Hydroxide Hybrid as Electrode Materials for Supercapacitor
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超级电容器电极材料MnO2/NiCo层状双氢氧化物杂化物的合成

DOI:
10.1007/s10904-020-01481-1
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发表时间:
2020-02
影响因子:
4
通讯作者:
Chen Jingshuai
Chen Jingshuai
中科院分区:
化学3区
文献类型:
--
作者:
Wu Songhua;Zhang Jianzheng;Sun Chao;Chen Jingshuai

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研究了NiCo-LDH纳米板修饰二氧化锰纳米片用于高性能超级电容器。采用简单的水热法和共沉淀法两步施工。采用TEM、XRD、XPS、BET、FT-IR对样品进行表征。所制备的MnO2/NiCo-LDH复合材料具有较大的比表面积和一定的活性位点,通过对MnO2和LDH的优点进行适当的整合和优化,实现了在超级电容器中优异的储能能力。结果表明,在6 M KOH电解液中,MnO2/NiCo-LDH在电流密度为1 a /g时的比电容为555.6 F/g,远高于纯MnO2。MnO2/NiCo-LDH在1000次循环后仍能保持良好的循环稳定性。该研究表明MnO2/NiCo-LDH复合材料作为超级电容器电极材料具有很大的潜力。
MnO2nanosheets decorated with NiCo-LDH nanoplates were developed for high-performance supercapacitors. The construction strategy involved a facile two-step method including hydrothermal step and co-precipitation step. The samples were characterized by TEM, XRD, XPS, BET, and FT-IR. The prepared MnO2/NiCo-LDH composites with a large specific surface area and a certain active sites, realized the excellent energy storage capability in supercapacitors, due to the proper integration and optimization of the advantages of both MnO2and LDH. Consequently, MnO2/NiCo-LDH shows a specific capacitance 555.6 F/g at current density of 1 A/g in 6 M KOH electrolyte, which is much higher than that of pure MnO2. Besides, MnO2/NiCo-LDH still can keep good cycling stability after 1000 cycles. This study indicates that MnO2/NiCo-LDH composite may have great potential as electrode material for supercapacitors.
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