Nickel phosphide nanoparticles decorated on polypyrrole nanowires as battery-type electrodes for hybrid supercapacitors

NWIPB OpenIR

	Nickel phosphide nanoparticles decorated on polypyrrole nanowires as battery-type electrodes for hybrid supercapacitors
	Li, ZQ; Yu, RT; Yue, CM; Tian, T; Guo, ZC; Mu, JB; Zhang, XL; Wang, GS; Zhang, ZX; Che, HW
	2022
发表期刊	SYNTHETIC METALS
卷号	291
摘要	Metal phosphides as electrode materials for hybrid supercapacitors (HSCs) still face many challenges, such as insufficient electroactive sites, sluggish reaction kinetics, and low structural stability. To resolve these problems, we here integrate nickel phosphide (NiP) with polypyrrole (PPy) to construct PPy@NiP nanocomposites using a two-step electrochemical approach. Such nanocomposites are composed of amorphous NiP nanoparticles deco-rated on PPy nanowires. They are featured by increased amount of electroactive sites, enhanced electrical conductivity and electrolyte diffusion rate, and improved structural stability compared to the pure NiP particles. As a result, the PPy@NiP nanocomposites as HSC electrodes yield specific capacities of up to 364 mAh g(-1) at 3 A g(-1) and 159 mAh g(-1) at 20 A g(-1) as well as a 91% initial capacity retention over 5000 cycles at 10 A g(-1). Their charge storage performance is superior to that of the pure NiP electrode. Furthermore, the fabricated PPy@NiP-based HSC device demonstrates an energy density of 57.3 Wh kg(-1) at 798 W kg(-1). This strategy for constructing PPy@NiP electrodes may be extended to other metal phosphide-based electrodes with enhanced charge storage performance for HSCs.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61045
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Li, ZQ,Yu, RT,Yue, CM,et al. Nickel phosphide nanoparticles decorated on polypyrrole nanowires as battery-type electrodes for hybrid supercapacitors[J]. SYNTHETIC METALS,2022,291.
APA	Li, ZQ.,Yu, RT.,Yue, CM.,Tian, T.,Guo, ZC.,...&Che, HW.(2022).Nickel phosphide nanoparticles decorated on polypyrrole nanowires as battery-type electrodes for hybrid supercapacitors.SYNTHETIC METALS,291.
MLA	Li, ZQ,et al."Nickel phosphide nanoparticles decorated on polypyrrole nanowires as battery-type electrodes for hybrid supercapacitors".SYNTHETIC METALS 291(2022).