Iodine redox chemistry in rechargeable batteries.

Iodine redox chemistry in rechargeable batteries.
Angew Chem Int Ed Engl. 2020 Sep 17;:
Authors: Ma J, Liu M, He Y, Zhang J
Abstract
In contrast with the classic ion intercalation, halogens have been coupled with metal anodes in a single cell to develop novel rechargeable batteries on the basis of the extrinsic redox reactions.  Since the commercial introduction of lithium-iodine primary battery in 1972, the iodine-based batteries exhibit high potential to match with high-rate performance, large energy density, and good safety in comparison with other halogen-based batteries. Along with the prosperous development of metal anodes (e.g., Li, Zn), one of the actual challenges lies in preparing the electrochemically active and reliable iodine-based cathodes to avoid the self-discharging and capacity decay of rechargeable batteries. The understanding on fundamental chemistries of iodine/polyiodide and their underlying mechanisms is still highly desirable to promote the rational design of advanced cathodes for high-performance rechargeable batteries. In this review, the recent advances on the development of iodine-based cathodes to fabricate rechargeable batteries are summarized, with special focus on the basic principles of iodine redox chemistry to correlate the structure-function relationship. The integration between the chemistry performed and battery performance would provide the deep insight into the design and development of advanc...

Source: Angewandte Chemie - September 16, 2020 Category: Chemistry Authors: Ma J, Liu M, He Y, Zhang J Tags: Angew Chem Int Ed Engl Source Type: research