Issue 4, 2024

3D porous cementitious electrolytes with “stream-reservoir” ionic channels for high multifunctional performance structural supercapacitors

Abstract

Structural supercapacitors (SSCs) have attracted extensive attention due to load bearing/energy storage in zero energy buildings (ZEBs). Unfortunately, SSCs normally suffer from low energy density owing to the conventional cementitious electrolytes' poor ionic conductivity and dissatisfactory interface bonding. Herein, a new “stream-reservoir” porous cementitious electrolyte is prepared by a simple foaming strategy. The ionic conductivity of the resulting material reaches 13.1 mS cm−1. The “stream-reservoir” structure endows the cementitious electrolyte with abundant ion channels and certain mechanical stability, effectively reducing the interfacial contact resistance with the electrode. Based on the porous cementitious electrolyte, the fabricated load-bearing/energy storage integrated supercapacitor delivers an energy density of 32.8 μW h cm−2 and a power density of 2.5 mW cm−2 and suffers a small capacitance degradation. Additionally, the supercapacitor can maintain stable electrochemical behavior while withstanding external loads, which is a rarely studied aspect in other reports. The obtained multifunctional performances may provide intriguing opportunities for ZEBs and electrochemical energy storage.

Graphical abstract: 3D porous cementitious electrolytes with “stream-reservoir” ionic channels for high multifunctional performance structural supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
26 Sep 2023
Accepted
14 Dec 2023
First published
15 Dec 2023

J. Mater. Chem. A, 2024,12, 2237-2248

3D porous cementitious electrolytes with “stream-reservoir” ionic channels for high multifunctional performance structural supercapacitors

M. Shi and D. Zhang, J. Mater. Chem. A, 2024, 12, 2237 DOI: 10.1039/D3TA05853K

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