Premium
Suppressing Chemical Corrosions of Lithium Metal Anodes
Author(s) -
Lu Bingyu,
Li Weikang,
Cheng Diyi,
Bhamwala Bhargav,
Ceja Miguel,
Bao Wurigumula,
Fang Chengcheng,
Meng Ying Shirley
Publication year - 2022
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202202012
Subject(s) - materials science , corrosion , anode , porosity , electrolyte , metal , lithium metal , lithium (medication) , chemical engineering , metallurgy , inorganic chemistry , composite material , electrode , chemistry , medicine , engineering , endocrinology
The lithium metal anode is essential for next‐generation high‐energy‐density rechargeable Li‐metal batteries. Although extensive studies have been performed to prolong the cycle life of Li‐metal batteries, the calendar life, which associates with the chemical corrosion of Li metal in liquid electrolytes, has not been quantitatively understood. Here, by combing the titration gas chromatography method and cryogenic focused ion beam, a quantitative relationship between the chemical corrosion rate and electrochemically deposited Li morphology in various liquid electrolyte systems is established. It has been identified that the corrosion rate is dominated by the porosity of the deposited Li. The larger the porosity of deposited Li has, the faster the corrosion rate will be. Strategies to mitigate the chemical corrosion on Li thus to extend the calendar life of Li‐metal batteries are further proposed. By strictly controlling the stacking pressure during Li plating, Li deposits with ultra‐low porosity can be achieved, suppressing the corrosion rate to 0.08 ± 0.16%/day compared with 1.71 ± 0.19%/day of the high‐porosity Li.