High-mass-loading cobalt iron phosphide@nickel vanadium layered double hydroxide heterogeneous nanosheet arrays for hybrid supercapacitors

Wan，Liu1; Chen，Jian1; Zhang，Yan1; Du，Cheng1; Xie，Mingjiang1; Hu，Shunxuan2

2024-01-15

10.1016/j.jcis.2023.10.066

Journal of Colloid and Interface Science   影响因子和分区

0021-9797

1095-7103

Designing multidimensional heterostructures on flexible substrates is an efficient approach to resolve the low energy density of supercapacitors. Herein, a three-dimensional (3D) porous cobalt iron phosphide (CoFeP)@nickel vanadium-layered double hydroxide (NiV-LDH) heterostructure has been prepared anchored on carbon cloth (CC) substrate. In this nanoarchitecture, NiV-LDH nanosheets are densely wrapped on the surface of CoFeP nanosheets, which forms a hierarchically porous framework with an enlarged surface area and accessible pore channels. Benefiting from the strong interaction and synergistic effect between CoFeP and NiV-LDH, the well-defined heterostructure can realize simultaneously rich redox active sites, rapid reaction dynamics, and good structural stability. Thus, the binder-free CoFeP@NiV-LDH electrode with a high mass loading of 6.47 mg cm displays a significantly increased specific capacity of 903.1C g (2.35C cm) at 1 A g and enhanced rate capability when compared to pristine CoFeP and NiV-LDH. Additionally, the assembled hybrid supercapacitor (HSC) yields an energy density of 77.9 Wh kg/0.98 Wh cm and excellent long-term stability. This research proposes a rational route for designing heterogeneous micro-/nanoarchitectures with commercial-level mass loading for the practical application of high-energy-density supercapacitors.

Electrochemical performance Heterostructure Layered double hydroxide Supercapacitors Transition metal phosphides

SCI ; EI

英语

其他

CHEMISTRY

2-s2.0-85174323722

Scopus

1.Hubei Key Lab for Processing and Application of Catalytic Materials,College of Chemical Engineering,Huanggang Normal University,Huanggang,437000,China
2.School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,China

Wan，Liu,Chen，Jian,Zhang，Yan,et al. High-mass-loading cobalt iron phosphide@nickel vanadium layered double hydroxide heterogeneous nanosheet arrays for hybrid supercapacitors[J]. Journal of Colloid and Interface Science,2024,654:539-549.

Wan，Liu,Chen，Jian,Zhang，Yan,Du，Cheng,Xie，Mingjiang,&Hu，Shunxuan.(2024).High-mass-loading cobalt iron phosphide@nickel vanadium layered double hydroxide heterogeneous nanosheet arrays for hybrid supercapacitors.Journal of Colloid and Interface Science,654,539-549.

Wan，Liu,et al."High-mass-loading cobalt iron phosphide@nickel vanadium layered double hydroxide heterogeneous nanosheet arrays for hybrid supercapacitors".Journal of Colloid and Interface Science 654(2024):539-549.