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    An aqueous manganese-copper battery for large-scale energy storage applications

    Year: 2019

    Journal: J. Power Sources, Volume 423, MAY 31, page 203–210

    Authors: Wei, L.; Zeng, L.; Wu, M. C.; Jiang, H. R.; Zhao, T. S.

    Organizations: Research Grants Council of the Hong Kong Special Administrative Region, ChinaHong Kong Research Grants Council [T23-601/17-R]

    Keywords: Mn-Cu battery; Celgard separator; Low cost; Energy storage

    This work reports on a new aqueous battery consisting of copper and manganese redox chemistries in an acid environment. The battery achieves a relatively low material cost due to ubiquitous availability and inexpensive price of copper and manganese salts. It exhibits an equilibrium potential of similar to 1.1 V, and a coulombic efficiency of higher than 94% is obtained at an operating current of 20 mA cm(-2). Cyclic tests confirm that the energy efficiency maintains similar to 79% with no observable decay at 10 mA cm(-2) over 100 cycles. Possessing other advantages such as ease of scalability and capable of using an inexpensive separator, the battery offers a promising solution for large-scale energy storage applications.
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