Wearable high-performance supercapacitors based on Ni-coated cotton textile with low-crystalline Ni-Al layered double hydroxide nanoparticles

Haicui Lu; Jizhang Chen; Qinghua Tian

doi:10.1016/j.jcis.2017.11.046

Wearable high-performance supercapacitors based on Ni-coated cotton textile with low-crystalline Ni-Al layered double hydroxide nanoparticles

J Colloid Interface Sci. 2018 Mar 1:513:342-348. doi: 10.1016/j.jcis.2017.11.046. Epub 2017 Nov 16.

Authors

Haicui Lu¹, Jizhang Chen², Qinghua Tian³

Affiliations

¹ College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China.
² College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China. Electronic address: chenjizhang@njfu.edu.cn.
³ Department of Chemistry, School of Sciences, Zhejiang Sci-Tech University, Hangzhou, China.

PMID: 29169023
DOI: 10.1016/j.jcis.2017.11.046

Abstract

Wearable electronics are developing rapidly in recent years. In this work, we develop a cost-effective, facile, and scalable approach to transform insulating cotton textile to highly conductive Ni-coated cotton textile (NCT). In order to verify the feasibility of NCT as a flexible current collector for wearable supercapacitors, we electrodeposit low-crystalline Ni-Al layered double hydroxide (LDH) nanoparticles onto the NCT. The obtained NCT@NiAl-LDH shows high specific capacitance (935.2 mF cm^-2), superior rate capability, and good cyclability. Besides, the asymmetric supercapacitor (ASC) assembled from NCT@NiAl-LDH exhibits high specific energy of 58.8 Wh kg^-1 (134 μWh cm^-2) when the specific power is 539 W kg^-1 (1228 μW cm^-2). The results demonstrate great potential of our methodology.

Keywords: Asymmetric supercapacitors; Cotton textile; Electrodeposition; Flexibility; Layered double hydroxide.