Rechargeable aluminium organic batteries

Dong Jun Kim, Dong-Joo Yoo, Michael T. Otley, Aleksandrs Prokofjevs, Cristian Pezzato, Magdalena Owczarek, Seung Jong Lee, Jang Wook Choi () and J. Fraser Stoddart ()
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Dong Jun Kim: Northwestern University
Dong-Joo Yoo: Seoul National University
Michael T. Otley: Northwestern University
Aleksandrs Prokofjevs: Northwestern University
Cristian Pezzato: Northwestern University
Magdalena Owczarek: Northwestern University
Seung Jong Lee: Korea Advanced Institute of Science and Technology (KAIST)
Jang Wook Choi: Seoul National University
J. Fraser Stoddart: Northwestern University

Nature Energy, 2019, vol. 4, issue 1, 51-59

Abstract: Abstract Since aluminium is one of the most widely available elements in Earth’s crust, developing rechargeable aluminium batteries offers an ideal opportunity to deliver cells with high energy-to-price ratios. Nevertheless, finding appropriate host electrodes for insertion of aluminium (complex) ions remains a fundamental challenge. Here, we demonstrate a strategy for designing active materials for rechargeable aluminium batteries. This strategy entails the use of redox-active triangular phenanthrenequinone-based macrocycles, which form layered superstructures resulting in the reversible insertion and extraction of a cationic aluminium complex. This architecture exhibits an outstanding electrochemical performance with a reversible capacity of 110 mA h g–1 along with a superior cyclability of up to 5,000 cycles. Furthermore, electrodes composed of these macrocycles blended with graphite flakes result in higher specific capacity, electronic conductivity and areal loading. These findings constitute a major advance in the design of rechargeable aluminium batteries and represent a good starting point for addressing affordable large-scale energy storage.

Date: 2019
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DOI: 10.1038/s41560-018-0291-0

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