TY - JOUR
T1 - Selection of Redox Mediators for Reactivating Dead Li in Lithium Metal Batteries
AU - Chen, Jie
AU - Cheng, Zexiao
AU - Liao, Yaqi
AU - Yuan, Lixia
AU - Li, Zhen
AU - Huang, Yunhui
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-20
PY - 2022/10/27
Y1 - 2022/10/27
N2 - Li metal batteries have suffered from dendrite growth and its derived dead Li formation for a long time. A new lithium restoration method through the shuttling of redox mediators has been proposed recently. However, the side reaction of severe self-discharge often occurs when some redox mediators are used. Here, a selection principle of redox mediators for reactivating dead Li in lithium metal batteries is put forward, which is able to reactivate the dead Li effectively and reduce the self-discharge at the same time. Three redox mediators of ferrocene (Fc), 10-methylphenothiazine (MPT), and thianthrene (Th) with different redox potentials are tested in LiFePO4|Cu anode-free Li metal batteries to clarify the selection principle. Furthermore, 2,2,6,6-tetramethylpiperidinooxy (TEMPO), which is speculated to be a suitable one for reactivating dead Li in lithium metal batteries, is verified. This work provides a universal selection principle of redox mediators and may boost its practical application in Li metal batteries.
AB - Li metal batteries have suffered from dendrite growth and its derived dead Li formation for a long time. A new lithium restoration method through the shuttling of redox mediators has been proposed recently. However, the side reaction of severe self-discharge often occurs when some redox mediators are used. Here, a selection principle of redox mediators for reactivating dead Li in lithium metal batteries is put forward, which is able to reactivate the dead Li effectively and reduce the self-discharge at the same time. Three redox mediators of ferrocene (Fc), 10-methylphenothiazine (MPT), and thianthrene (Th) with different redox potentials are tested in LiFePO4|Cu anode-free Li metal batteries to clarify the selection principle. Furthermore, 2,2,6,6-tetramethylpiperidinooxy (TEMPO), which is speculated to be a suitable one for reactivating dead Li in lithium metal batteries, is verified. This work provides a universal selection principle of redox mediators and may boost its practical application in Li metal batteries.
UR - https://onlinelibrary.wiley.com/doi/10.1002/aenm.202201800
UR - http://www.scopus.com/inward/record.url?scp=85137216623&partnerID=8YFLogxK
U2 - 10.1002/aenm.202201800
DO - 10.1002/aenm.202201800
M3 - Article
SN - 1614-6840
VL - 12
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 40
ER -
