Issue 45, 2020

Simplifying and accelerating kinetics enabling fast-charge Al batteries

Abstract

Nowadays, cost-efficient and high-power energy storage technologies are urgently required for extensive integration of intermittent wind and solar renewable energy. Complying with the simplification and acceleration principle, we designed a fast-charge Al organic battery in which ionic diffusion in anode materials and through the solid electrolyte interphase (SEI) process is simplified while the generation of charge-carrier ions at the cathode/anode interface and ion diffusion in cathode materials are accelerated. A prototype based on 2,3,5,6-tetraphthalimido-p-benzoquinone (TPBQ)–Al was successfully demonstrated with 100 mA h pouch cells displaying superior power capability, high energy density and excellent cycling stability. Moreover, extensive characterizations and DFT calculations predict the crystal structure and simulate the precise reaction pathway corresponding to the thermodynamic redox potential of TPBQ and consolidate our proposed AlCl2+ electrochemical surface-coordination and storage mechanism. We believe that our design philosophy by simplifying and accelerating kinetics would provide guidance for tailoring fast and affordable energy storage systems.

Graphical abstract: Simplifying and accelerating kinetics enabling fast-charge Al batteries

Supplementary files

Article information

Article type
Paper
Submitted
25 Aug 2020
Accepted
21 Oct 2020
First published
22 Oct 2020

J. Mater. Chem. A, 2020,8, 23834-23843

Simplifying and accelerating kinetics enabling fast-charge Al batteries

M. Mao, Z. Yu, Z. Lin, Y. Hu, H. Li, X. Huang, L. Chen, M. Liu and L. Suo, J. Mater. Chem. A, 2020, 8, 23834 DOI: 10.1039/D0TA08348H

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