Jump to main content
Jump to site search

Issue 18, 2018
Previous Article Next Article

Phosphorylated graphene monoliths with high mixed proton/electron conductivity

Author affiliations

Abstract

A mixed ionic–electronic conductor (MIEC) plays a crucial role in electrochemical technologies relevant to energy conversion and storage. The existing composite materials often suffer from poor mixed conducting performance due to the distinct phase boundaries and random distributions of the transport channels. Herein, we propose the concept for the fabrication of a single-phase MIEC using two-dimensional (2D) building blocks-phosphorylated graphene nanosheets, which are assembled into three-dimensional (3D) interconnected networks with long-range ordered nanochannels. Attributed to the sufficient proton carriers (phosphate groups) confined in electron-conductive nanochannels and the integration of conductive pathways, simultaneously enhanced proton conductivity (0.13 S cm−1) and electron conductivity (0.265 S cm−1) are achieved at 98% RH and 35 °C, surpassing the current performance of all graphene-based MIECs. This approach may pave the way for designing MIECs with high mixed conduction by utilizing the unique properties of 2D materials, beyond the limitations of pure proton-conducting/electron-conducting materials.

Graphical abstract: Phosphorylated graphene monoliths with high mixed proton/electron conductivity

Back to tab navigation

Supplementary files

Article information


Submitted
18 Mar 2018
Accepted
09 Apr 2018
First published
09 Apr 2018

J. Mater. Chem. A, 2018,6, 8499-8506
Article type
Paper

Phosphorylated graphene monoliths with high mixed proton/electron conductivity

L. Cao, H. Wu, Z. Mu, X. He, C. Wang, J. Li, Y. Li, M. Xu and Z. Jiang, J. Mater. Chem. A, 2018, 6, 8499
DOI: 10.1039/C8TA02500B

Social activity

Search articles by author

Spotlight

Advertisements