2016/06/20 by Hariharan Katharajan, Katharajan, Hariharan, Kumar Virwani +6
Engineering · Materials Science · Physics and Astronomy · #Advanced Battery Materials and Technologies #Advanced Battery Technologies Research #Conducting polymers and applications #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1606.06363
13 pages, 4 figures
arxiv created 2016/06/20 · openalex publication_date 2016/06/20 · arxiv updated 2016/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The morphologies of crystalline lithium peroxide (Li2O2) discharge products in Li-O2 batteries have been shown to exhibit a dependency on subtle variations within the battery cell-operating environment including exposure to ambient air, moisture, or additives. As a result, imaging battery discharge products in real time under carefully controlled environmental conditions is a challenging obstacle for complete mechanistic understanding of Li2O2 growth and deposition during discharge in metal-air batteries. Here, we report the design of a completely enclosed cell for high-resolution in situ AFM imaging of Li-O2 battery discharge products. The air-and moisture-free electrochemical cell environment enabled the observation of different product morphologies during AFM imaging when LiTFSI in oxygen-saturated tetraethylene glycol dimethyl ether (tetraglyme) solvent was employed. This in situ AFM cell development brings complimentary information to various proposed mechanisms for lithium oxygen reaction.