Hydrogen isotope effects: A new path to high-energy aqueous rechargeable Li/Na-ion batteries
Xue-Ting Li,
Jia Chou,
Yu-Hui Zhu,
Wen-Peng Wang,
Sen Xin,
Yu-Guo Guo
Affiliations
Xue-Ting Li
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
Jia Chou
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China
Yu-Hui Zhu
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
Wen-Peng Wang
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China
Sen Xin
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Corresponding authors.
Yu-Guo Guo
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Corresponding authors.
Aqueous rechargeable Li/Na-ion batteries have shown promise for sustainable large-scale energy storage due to their safety, low cost, and environmental benignity. However, practical applications of aqueous batteries are plagued by water's intrinsically narrow electrochemical stability window, which results in low energy density. In this perspective article, we review several strategies to broaden the electrochemical window of aqueous electrolytes and realize high-energy aqueous batteries. Specifically, we highlight our recent findings on stabilizing aqueous Li storage electrochemistry using a deuterium dioxide-based aqueous electrolyte, which shows significant hydrogen isotope effects that trigger a wider electrochemical window and inhibit detrimental parasitic processes.
