Facile synthesis of self-supported core-shell Cu2O@MnO2 octahedral microcrystals and their application in supercapacitors

作者：Chai, Chaojing; Liu, Aifeng^*; Lv, Yamei; Mu, Jingbo; Zhang, Xiaoliang; Che, Hongwei^*

来源：Materials Letters, 2017, 196: 308-311.

DOI：10.1016/j.matlet.2017.03.108

• Semiconductor
• Core-shell
• Cu2O@MnO2
• Energy storage and conversion

Novel self-supported core-shell Cu2O@ MnO2 octahedral microcrystals directly growing on the nickel foam have been synthesized through a facile solvothermal reduction deposition process followed by a hydrothermal reaction. The core-shell heterostructures were constructed through growing MnO2 nanosheets on the surface of Cu2O octahedral microcrystal. Based on the synergetic effects from both the cores and shells, such self-supported core-shell Cu2O@ MnO2 octahedral microcrystals as binder-free electrode materials exhibited a high specific capacitance of 371 F g(-1) at 0.5 A g(-1) and excellent cycling stability with 95.8% of capacitance retention after 2000 cycles. These findings suggest their potential applications as a promising electrode material for supercapacitors.

• 出版日期2017-6-1
• 单位河北工程大学