Sophisticated Structural Tuning of NiMoO4@MnCo2O4 Nanomaterials for High Performance Hybrid Capacitors

Yifei Di; Jun Xiang; Nan Bu; Sroeurb Loy; Wenduo Yang; Rongda Zhao; Fufa Wu; Xiaobang Sun; Zhihui Wu

doi:10.3390/nano12101674

Sophisticated Structural Tuning of NiMoO₄@MnCo₂O₄ Nanomaterials for High Performance Hybrid Capacitors

Nanomaterials (Basel). 2022 May 14;12(10):1674. doi: 10.3390/nano12101674.

Authors

Yifei Di¹, Jun Xiang¹, Nan Bu¹, Sroeurb Loy¹, Wenduo Yang¹, Rongda Zhao¹, Fufa Wu¹, Xiaobang Sun¹, Zhihui Wu²

Affiliations

¹ School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China.
² Liaoning Brother Electronics Technology Co., Chaoyang 122000, China.

Abstract

NiMoO₄ is an excellent candidate for supercapacitor electrodes, but poor cycle life, low electrical conductivity, and small practical capacitance limit its further development. Therefore, in this paper, we fabricate NiMoO₄@MnCo₂O₄ composites based on a two-step hydrothermal method. As a supercapacitor electrode, the sample can reach 3000 mF/cm² at 1 mA/cm². The asymmetric supercapacitor (ASC), NiMoO₄@MnCo₂O₄//AC, can be constructed with activated carbon (AC) as the negative electrode, the device can reach a maximum energy density of 90.89 mWh/cm³ at a power density of 3726.7 mW/cm³ and the capacitance retention can achieve 78.4% after 10,000 cycles.

Keywords: NiMoO4@MnCo2O4; cycling stability; electrochemical performance; microstructure; supercapacitors.

Grants and funding

This research was funded by [Jun Xiang] grant number [51702143], and the APC was funded by [the National Natural Science Foundation of China]. This research was funded by [Fufa Wu] grant number [51971106], and the APC was funded by [the National Natural Science Foundation of China]. This research was funded by [Jun Xiang] grant number [2021-MS-320], and the APC was funded by [the Natural Science Foundation of Liaoning Province]. This research was funded by [Rongda Zhao] grant number [2019-MS-171], and the APC was funded by [the Natural Science Foundation of Liaoning Province]. This research was funded by [Jun Xiang] grant number [LJKQZ2021145], and the APC was funded by [the Youth Project of Education Department of Liaoning Province].