In situ visualization of synergistic effects between electrolyte additives and catalytic electrodes in Li-O2 batteries

Yaozu Zhang; Zhenzhen Shen; Rui Wen

doi:10.1039/d2cc04808f

In situ visualization of synergistic effects between electrolyte additives and catalytic electrodes in Li-O₂ batteries

Chem Commun (Camb). 2022 Dec 1;58(96):13381-13384. doi: 10.1039/d2cc04808f.

Authors

Yaozu Zhang^{1

2}, Zhenzhen Shen^{1

2}, Rui Wen^{1

2}

Affiliations

¹ CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. ruiwen@iccas.ac.cn.
² University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 36377814
DOI: 10.1039/d2cc04808f

Abstract

By using in situ atomic force microscopy, Li-O₂ interfacial reactions promoted synergistically by the electrolyte additive K⁺ and Pt nanoparticles electrode are visualized. The Pt nanoparticles electrode promotes the formation of the intermediate lithium superoxide (LiO₂) and K⁺ assists its diffusion into the electrolyte, thereby promoting the formation of large-sized discharge products during discharging and increasing the discharge capacity of the Li-O₂ battery. These results provide direct evidence for clarifying the interfacial synergy mechanism of electrolyte additives and solid catalysts.