Open AccessCommunication—Anode-Free Lithium Metal Batteries: A Case Study of Compression Effects on Coin Cell Performance
Author(s) -
Chengtian Zhou,
Alfred Junio Samson,
Mohammad Akbari Garakani,
Venkataraman Thangadurai
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac0998
Subject(s) - anode , materials science , lithium (medication) , compression (physics) , homogeneous , metal , lithium metal , electrode , composite material , chemistry , thermodynamics , metallurgy , medicine , physics , endocrinology
Here, we demonstrate that altering the cell configuration can increase the compression level inside a coin cell, resulting in superior charge and discharge cycle performance. A normal anode-free coin cell’s capacity drops to zero within 20 cycles, while the more compressed cell retains 150 mAh g −1 at the 20th cycle, which is 87.3% of the first cycle discharge capacity. EIS shows that the compressed cell possesses lower bulk resistance and charge transfer resistance through SEI. It also leads to homogeneous Li deposition free of dendrites. Our finding enables a more accurate assessment of anode-free Li-metal batteries in a coin cell.