"A High-Rate Lithium Manganese Oxide-Hydrogen Battery"

Zhengxin Zhu: Mingming Wang, Yahan Meng, Zihan Lin, Yi Cui, Wei Chen; Nano Letters, 04/17/20.

Additional Authors: Mingming Wang, Yahan Meng, Zihan Lin, Yi Cui, Wei Chen

Abstract:

Rechargeable hydrogen gas batteries show promises for the integration of renewable yet intermittent solar and wind electricity into the grid energy storage. Here, we describe a rechargeable, high-rate, and long-life hydrogen gas battery that exploits a nanostructured lithium manganese oxide cathode and a hydrogen gas anode in an aqueous electrolyte. The proposed lithium manganese oxide-hydrogen battery shows a discharge potential of ∼1.3 V, a remarkable rate of 50 C with Coulombic efficiency of ∼99.8%, and a robust cycle life. A systematic electrochemical study demonstrates the significance of the electrocatalytic hydrogen gas anode and reveals the charge storage mechanism of the lithium manganese oxide-hydrogen battery. This work provides opportunities for the development of new rechargeable hydrogen batteries for the future grid-scale energy storage.

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