Issue 5, 2017

A polymer-supported electrolyte-affinity hybrid membrane and modification of the amphiphilic block copolymer for use as a super-high flexible and high-performance supercapacitor

Abstract

In this study, a super-high flexible membrane electrode (FME) was developed via a facile method based on liquid–liquid phase separation involving the migration and self-assembly of the components. Note that the surface segregation and chain orientation of the amphiphilic block copolymer PAA-b-PAN-b-PAA on the membrane surface during the phase separation process provide the hierarchical porous structure and electrolyte-affinity electrode surface; this hierarchical porous structure provides pathways for the electrolyte ions into and from the electrolyte/solution interface for further contact and reaction of the electrochemically active materials with the electrolyte ions. In a three-electrode system, the specific capacitance of FME-Ni(OH)2 can reach up to 2198.6 F g−1 (769.5 C g−1) at the current density of 0.5 A g−1 from 0 to 0.35 V as compared to that for non-flexible Ni(OH)2 (1588.6 F g−1; 556.0 C g−1). Moreover, a flexible asymmetric supercapacitor with FME-Ni(OH)2 as the positive electrode and FME-AC (commercial activated carbon) as the negative electrode showed the high specific capacitance of 102.2 F g−1 (163.5 C g−1) and the maximum energy density of 36.3 W h kg−1 at the power density of 400 W kg−1; moreover, it retained the energy density of 20.6 W h kg−1 at the high power density of 4000 W kg−1 in the potential window ranging from 0 to 1.6 V in a 6 M KOH aqueous solution.

Graphical abstract: A polymer-supported electrolyte-affinity hybrid membrane and modification of the amphiphilic block copolymer for use as a super-high flexible and high-performance supercapacitor

Supplementary files

Article information

Article type
Paper
Submitted
06 Cʼhwe. 2017
Accepted
07 Ebr. 2017
First published
10 Ebr. 2017

Sustainable Energy Fuels, 2017,1, 1074-1081

A polymer-supported electrolyte-affinity hybrid membrane and modification of the amphiphilic block copolymer for use as a super-high flexible and high-performance supercapacitor

X. Zhao, Y. Yang, J. Wu, Y. Tan, Y. Liu, L. Kong, L. Kang and F. Ran, Sustainable Energy Fuels, 2017, 1, 1074 DOI: 10.1039/C7SE00076F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements