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Understanding the Reaction Interface in Lithium‐Oxygen Batteries
Author(s) -
Huang Jun,
Peng Zhangquan
Publication year - 2019
Publication title -
batteries and supercaps
Language(s) - English
Resource type - Journals
ISSN - 2566-6223
DOI - 10.1002/batt.201800083
Subject(s) - lithium (medication) , mechanism (biology) , oxygen , identification (biology) , interface (matter) , reaction mechanism , computer science , nanotechnology , chemistry , chemical physics , materials science , physics , psychology , catalysis , biochemistry , botany , gibbs isotherm , organic chemistry , adsorption , quantum mechanics , psychiatry , biology
The presented review article recapitulates the current state of the art in understanding three fundamental issues relevant to the reaction interface in lithium‐oxygen batteries; i) charge transport across lithium peroxide, ii) morphological evolution and identification of reactive sites, and iii) mechanisms of the involved oxygen reactions. Except of the discharge reaction mechanism, there is still a lack of a complete mechanistic picture for these fundamental issues. However, we are standing at the brink of connecting the single dots to draw the overall image. Neglect of double layer effects and nonlinearities has led us to stray from the path towards correct understanding of the charge transport. The current status of reaction sites reminds us of the parable of the blind and the elephant. Multiple in‐situ, cross‐validated methods and multiple working hypotheses are essential for a comprehensive understanding. More efforts, especially on identifying the reaction intermediates, are required to portray a unifying mechanistic scheme for the charge reaction mechanism.