TY  - JOUR
AU  - Hsieh, Yi-Chen
AU  - Leißing, Marco
AU  - Nowak, Sascha
AU  - Hwang, Bing-Joe
AU  - Winter, Martin
AU  - Brunklaus, Gunther
TI  - Quantification of Dead Lithium via In Situ Nuclear Magnetic Resonance Spectroscopy
JO  - Cell reports / Physical science
VL  - 1
IS  - 8
SN  - 2666-3864
CY  - [New York, NY]
PB  - Elsevier
M1  - FZJ-2024-02120
SP  - 100139 -
PY  - 2020
AB  - Inhomogeneous lithium deposition or dendrite formation and occurrence of ‘‘dead lithium’’ fractions are challenging issues, hampering the commercial application of lithium metal batteries. Conditions and strategies for minimizing potential failure of lithium metal anodes are currently not fully understood, despite recent progress. We report a protocol utilizing in situ and ex situ 7 Li solid-state NMR spectroscopy to quantify irreversible lithium losses in batteries, clearly distinguishing losses due to SEI formation and fractions of ‘‘dead lithium,’’ revealing a distribution of different lithium metal microstructures on both working and counter elec- trodes upon plating and stripping. Estimates of dead lithium fractions of 3.3% G 0.6% (with 5% FEC) and 9.4% G 0.6% (without 5% FEC) are determined. The proposed protocol affords benchmarking of commercial cells, including future design of suitable strategies for effective development and tailoring of electrolyte formulations, fostering further advancement of high-performance energy storage applications.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000658750600006
DO  - DOI:10.1016/j.xcrp.2020.100139
UR  - https://juser.fz-juelich.de/record/1024364
ER  -