Following the transient reactions in lithium-sulfur batteries using an in situ nuclear magnetic resonance technique

Nano Letters
Jie XiaoJ Liu

Abstract

A fundamental understanding of electrochemical reaction pathways is critical to improving the performance of Li-S batteries, but few techniques can be used to directly identify and quantify the reaction species during disharge/charge cycling processes in real time. Here, an in situ (7)Li NMR technique employing a specially designed cylindrical microbattery was used to probe the transient electrochemical and chemical reactions occurring during the cycling of a Li-S system. In situ NMR provides real time, semiquantitative information related to the temporal evolution of lithium polysulfide allotropes during both discharge/charge processes. This technique uniquely reveals that the polysulfide redox reactions involve charged free radicals as intermediate species that are difficult to detect in ex situ NMR studies. Additionally, it also uncovers vital information about the (7)Li chemical environments during the electrochemical and parasitic reactions on the Li metal anode. These new molecular-level insights about transient species and the associated anode failure mechanism are crucial to delineating effective strategies to accelerate the development of Li-S battery technologies.

References

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Citations

Sep 1, 2015·ACS Applied Materials & Interfaces·Heng-Liang WuAndrew A Gewirth
Jan 24, 2017·ACS Applied Materials & Interfaces·Zhixiao Liu, Partha P Mukherjee
Mar 17, 2017·Journal of the American Chemical Society·Hong-Jie PengQiang Zhang
Mar 24, 2016·Chemistry : a European Journal·Lars BorchardtStefan Kaskel
May 19, 2017·Angewandte Chemie·Ting-Zheng HouQiang Zhang
Jan 18, 2017·Proceedings of the National Academy of Sciences of the United States of America·Guangmin ZhouYi Cui
Jul 15, 2015·Chemical Communications : Chem Comm·Jian Zhi HuJohannes A Lercher
Jun 16, 2017·ACS Applied Materials & Interfaces·Joshua LochalaJie Xiao
May 10, 2018·Physical Chemistry Chemical Physics : PCCP·Steffen A KayserJosef Granwehr
Jul 20, 2016·Chemical Communications : Chem Comm·Lin ChenLeon L Shaw
Apr 22, 2021·Accounts of Chemical Research·Yuyang WangSean Xiao-An Zhang
Jun 24, 2021·Physical Chemistry Chemical Physics : PCCP·Lisa DjuandhiAditya Rawal
Jun 8, 2018·ACS Applied Materials & Interfaces·Dongping LuJun Liu
Oct 5, 2018·Nano Letters·Sebastiano BellaniFrancesco Bonaccorso
Sep 23, 2021·The Journal of Physical Chemistry Letters·Kie HankinsVijayakumar Murugesan

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