具有异质结构的多元过渡金属氧化物在超级电容器中的储能应用

doi:10.11896/cldb.25040081

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Abstract To increase the energy density of metal oxide NiMoO₄/CoMoO₄, a non-ionic surfactant polyvinylpyrrolidone (PVP) is used to modify the morphology of NiMoO₄/CoMoO₄-PVP to obtain nano-flower-like NiMoO₄/CoMoO₄-PVP formed by interlaced thin and curved nanosheets. Then, the NiMoO₄/CoMoO₄-PVP is used as the supporting material and potassium ferricyanide as the raw material to deposit Prussian blue analogue (PBAs) on the surface of NiMoO₄/CoMoO₄-PVP by solvent co-precipitation method. The results demonstrate that PBAs can provide pseudocapacitance and stable framework structure, as well as the heterostructure formed by PBAs and NiMoO₄/CoMoO₄-PVP can accelerate the diffusion rate of electrolyte ions and induce the exposure of more active sites for electrochemical energy storage. The microstructure characterization and the electrochemical performance reveal that the optimal aging time of the deposition reaction is 24 hours, and the NiMoO₄/CoMoO₄-PVP@PBAs-24 electrode exhibits good capacitance performance (1 313 F·g^-1 at 1 A·g^-1). Additionally, the NiMoO₄/CoMoO₄-PVP@PBAs-24//C_GL asymmetric capacitor assembled with biological porous carbon C_GL achieves 79.8% capacitance retention and 100% high Coulomb efficiency after 10 000 cycles. At the power density of 393 W·kg^-1, the maximum energy density is 42.17 Wh·kg^-1, indicating that NiMoO₄/CoMoO₄-PVP@PBAs-24 has good electrochemical performance.

Key words： supercapacitor metal oxide heterogeneous structure Prussian blue analogs biomass porous carbon

Published: 25 April 2026 Online: 2026-05-06

CLC number:

TB33

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	Articles by authors
	CHEN Yue
	XU Fen
	SUN Lixian
	YU Chuyu
	FENG Yulin
	LI Rongjiang
	XU Rudan
	DU Maozhan
	HU Xingyu

Cite this article:

CHEN Yue,XU Fen,SUN Lixian, et al. Multicomponent Transition Metal Oxides with Heterogeneous Structures in Energy Storage of Supercapacitors[J]. Materials Reports, 2026, 40(8): 25040081-10.

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https://www.mater-rep.com/EN/10.11896/cldb.25040081 OR https://www.mater-rep.com/EN/Y2026/V40/I8/25040081

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