Organic hydrogen peroxide-driven low charge potentials for high-performance lithium-oxygen batteries with carbon cathodes

Shichao Wu, Yu Qiao, Sixie Yang, Masayoshi Ishida, Ping He and Haoshen Zhou ()
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Shichao Wu: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Yu Qiao: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Sixie Yang: Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
Masayoshi Ishida: Graduate School of System and Information Engineering, University of Tsukuba
Ping He: Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
Haoshen Zhou: Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract Reducing the high charge potential is a crucial concern in advancing the performance of lithium-oxygen batteries. Here, for water-containing lithium-oxygen batteries with lithium hydroxide products, we find that a hydrogen peroxide aqueous solution added in the electrolyte can effectively promote the decomposition of lithium hydroxide compounds at the ultralow charge potential on a catalyst-free Ketjen Black-based cathode. Furthermore, for non-aqueous lithium-oxygen batteries with lithium peroxide products, we introduce a urea hydrogen peroxide, chelating hydrogen peroxide without any water in the organic, as an electrolyte additive in lithium-oxygen batteries with a lithium metal anode and succeed in the realization of the low charge potential of ∼3.26 V, which is among the best levels reported. In addition, the undesired water generally accompanying hydrogen peroxide solutions is circumvented to protect the lithium metal anode and ensure good battery cycling stability. Our results should provide illuminating insights into approaches to enhancing lithium-oxygen batteries.

Date: 2017
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DOI: 10.1038/ncomms15607

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