Impact of the Microstructure on Electrochemical Performances of Dilithium Benzoquinone Dioximate as a Positive Material for a Li-Ion Battery

Herein we would like to highlight the impact of the material microstructure on electrochemical performances of dilithium benzoquinone dioximate (Li2-BQDO) and its oxidized and self-polymerized version (PNND), a promising electroactive material for energy storage application. Li2-BQDO showed a reversible exchange of two lithium ions at high redox potential (3.0 V vs Li+/Li), acting as a lithiated organic positive electrode for lithium-ions batteries. After a preliminary computational study, electrochemical performance of the oxidized form of Li2-BQDO , which polymerize inside the cell, were also investigated. Thanks to TEM analysis coupled with the XRD experiment, the role of microstructure and crystal structure in the energy storage process was highlighted.