Issue 6, 2020

Polymer reinforced carbon fiber interfaces for high energy density structural lithium-ion batteries

Abstract

Here, we show that for battery active materials coated onto carbon fiber current collectors, a thin electroconductive poly acrylonitrile, or PAN, coating applied to the surface of the battery material coated fiber drastically improves adhesion and multifunctional structural energy storage performance. With this electrode design, we demonstrate structural battery composites composed of lithium iron phosphate cathodes and graphite anodes which exhibit a maximum energy density of 58 W h kg−1 considering all combined battery and composite materials that make up both the energy storage unit and structural system framework it powers. These full-cell structural batteries also demonstrate capacity retention over 80% exceeding 100 cycles with an average energy density of 52 W h kg−1. Combined mechanical and electrochemical testing correlates this excellent multifunctional performance to the role of PAN coating that adheres active battery materials to carbon fibers during battery operation and mechanical loading. Our findings demonstrate a structural Li-ion battery with a gravimetric multifunctional advantage for electrically powered systems, and highlights the importance of interface engineering to enable practical structural battery systems.

Graphical abstract: Polymer reinforced carbon fiber interfaces for high energy density structural lithium-ion batteries

Supplementary files

Article information

Article type
Communication
Submitted
17 Feb 2020
Accepted
27 Mac 2020
First published
31 Mac 2020
This article is Open Access
Creative Commons BY-NC license

Sustainable Energy Fuels, 2020,4, 2661-2668

Polymer reinforced carbon fiber interfaces for high energy density structural lithium-ion batteries

K. Moyer, N. A. Boucherbil, M. Zohair, J. Eaves-Rathert and C. L. Pint, Sustainable Energy Fuels, 2020, 4, 2661 DOI: 10.1039/D0SE00263A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, 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 commercial 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