Issue 1, 2021

High performance LiMnFePO4/Li4Ti5O12 full cells by functionalized polymeric additives

Abstract

Herein, we report a novel class of additives based on functional polymers for electrode fabrication. A small quantity of a 2,3-dimethoxybenzene (DMB)-based polymer was mixed with a state-of-the-art binder, poly(vinylene difluoride) (PVDF), to greatly improve the first fast charge–discharge and high-voltage LiMnFePO4/Li4Ti5O12 batteries operating at 3.0 V. Dual effects of the polymer were reported, i.e., trapping of soluble Mn2+ of positive electrodes and the in situ formation of a passivation layer on the negative electrode (AlF3). Both effects are possible because a functional polymer was used; this synergic effect enhances the cell performance by 16.7% after more than 300 cycles at 45 °C and 1C.

Graphical abstract: High performance LiMnFePO4/Li4Ti5O12 full cells by functionalized polymeric additives

Supplementary files

Article information

Article type
Paper
Submitted
04 Sep 2020
Accepted
15 Oct 2020
First published
15 Oct 2020
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2021,2, 253-260

High performance LiMnFePO4/Li4Ti5O12 full cells by functionalized polymeric additives

J. Daigle, S. Rochon, Y. Asakawa, B. Fleutot, C. Mallet, K. Amouzegar and K. Zaghib, Mater. Adv., 2021, 2, 253 DOI: 10.1039/D0MA00679C

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