Scalable three-dimensional Ni3P-based composite networks for flexible asymmertric supercapacitors
Artikel i vetenskaplig tidskrift, 2020

Flexible energy storage devices are of great importance in future wearable electronics. To achieve the popularization of these flexible equipments, it is urgent to develop proper productive method for easily scaling up high performance flexible electrode materials. Herein, a three-dimensional nano-network composite material based on Ni3P is designed on flexible carbon felt (CF). The network induced by the introduction of sulfonated polystyrene combines advantages of excellent redox ability of the Ni3P, great conductivity of NiCo alloy and fast electric double layer contribution of carbon. It shows a great energy storage performance and an excellent balance between areal and gravimetric capacitance (1.76 F cm−2 and 1048 F g−1), which are beneficial to the actual application. Besides, this CF@NiCoNiPC can be easily produced in a large-scale due to the simple and low-cost synthetic method. The CF@NiCoNiPC can be further fabricated into an asymmetric supercapacitor (ASC), which demonstrates an excellent capacitance of 516.7 mF cm−2 (170.5 F g−1) and long-term stability of 25,000 charging and discharging cycles (83% retentions). Excitingly, the ASC presents good mechanical performance with 92% capacitance retention after 1000 bending cycles. Three tandem ASCs can easily power a red LED for several minutes when charged for only 20 s even under a bent state, indicating the great potential in future flexible energy storage devices.

Scalable

Three-dimensional

Ni P-based 3

Network structure

Flexible energy storage

Författare

Peng Sun

Sun Yat-Sen University

Guangzhou Mecart Smart Technology Research Institute

Meijia Qiu

Sun Yat-Sen University

Junlong Huang

Sun Yat-Sen University

Jie Zhao

South China University of Technology

Luyi Chen

Sun Yat-Sen University

Yifeng Fu

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Guofeng Cui

Sun Yat-Sen University

Guangzhou Mecart Smart Technology Research Institute

Yexiang Tong

Sun Yat-Sen University

Chemical Engineering Journal

1385-8947 (ISSN)

Vol. 380 122621

Ämneskategorier

Förnyelsebar bioenergi

Energisystem

Kompositmaterial och -teknik

DOI

10.1016/j.cej.2019.122621

Mer information

Senast uppdaterat

2019-12-04