21August2018

Nano-Micro Letters

Towards Enhancing Wearability and Fashion of Wearable Supercapacitor with Modified Polyurethane Artificial Leather Electrolyte

Yan Huang1, 2, Zijie Tang3, Zhuoxin Liu3, Jun Wei4, Hong Hu5, Chunyi Zhi3, *

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Nano-Micro Lett. (2018) 10: 38

First Online: 17 January 2018 (Article)

DOI:10.1007/s40820-018-0191-7

*Corresponding author. E-mail: cy.zhi@cityu.edu.hk

 

Abstract

 


Fig. 1 Schematics of PU artificial leather modification to serve as a polyelectrolyte of an artificial leather supercapacitor. a From wPU to miwPU: (i) wPU without free ions, (ii) iwPU with ionic groups grafted on polymer chains, (iii) miwPU with the presence of NaCl and dyes. b The artificial leather supercapacitor comprising the miwPU electrolyte, PPy@CNT sheet electrodes, and miwPU artificial leather with patterns transferred from an arbitrary substrate

Inspired by the sophisticated artificial leather garment industry and towards enhancing wearability of energy storage devices, we demonstrate a polyurethane artificial leather supercapacitor with large sheet electrodes embedded in the leather layer simultaneously working as a polyelectrolyte. This design totally reserves textiles underneath and thus addresses the well-known challenge of wearing comfortability. It provides a revolutionary configuration of wearable supercapacitors-the artificial leather on garment is also a supercapacitor. Unlike the polyvinyl alcohol-based acidic electrolytes, which are widely used, sodium chloride is used to modify the intrinsically fluorescent polyurethane leather for ionic transportation, which has no harm to human. The fluorescent leather supercapacitor is easily transferrable from any arbitrary substrates to form various patterns, enabling multifunctionalities of practical wearability, fashion and energy storage.


 

Keywords

Artificial leather; Neutral electrolyte; Wearable supercapacitor; Fluoresence

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