TY - GEN
T1 - Long-Chain Ionic Liquid Additive Inhibits Dendrite Growth in Lithium Metal Battery
AU - Guan, Minrong
AU - Huang, Yongxin
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - Lithium (Li) metal is considered to be one of the promising anode materials because of its light mass, low potential, and high theoretical specific capacity, however, dendritic growth and low battery coulomb efficiency will shorten the life of lithium metal battery (LMB). To solve this problem, adding film-forming additives to the LMB electrolyte to control the composition of the solid electrolyte interface (SEI) is a simple and effective method of lithium anode modification. Herein, this work homogenizes lithium deposition by adding a long-chain ionic liquid (IL) surface-active additive [C16MIM]BF4 to take advantage of the electrostatic shielding effect of the long-chain, at the same time, the anion group is reacted into BN, which inhibits electron transport and electrolyte degradation, both of them inhibit the growth of lithium dendrite. Stable cycling of symmetric Li||Li cells for 600 h was achieved by adding the additive to the electrolyte, and the LiFePO4||Li cells exhibited a lower polarization (51 mV) and a reversible capacity of 165.47 mAh g−1 after 30 cycles compared to the blank sample, which was highly compatible with LiFePO4.
AB - Lithium (Li) metal is considered to be one of the promising anode materials because of its light mass, low potential, and high theoretical specific capacity, however, dendritic growth and low battery coulomb efficiency will shorten the life of lithium metal battery (LMB). To solve this problem, adding film-forming additives to the LMB electrolyte to control the composition of the solid electrolyte interface (SEI) is a simple and effective method of lithium anode modification. Herein, this work homogenizes lithium deposition by adding a long-chain ionic liquid (IL) surface-active additive [C16MIM]BF4 to take advantage of the electrostatic shielding effect of the long-chain, at the same time, the anion group is reacted into BN, which inhibits electron transport and electrolyte degradation, both of them inhibit the growth of lithium dendrite. Stable cycling of symmetric Li||Li cells for 600 h was achieved by adding the additive to the electrolyte, and the LiFePO4||Li cells exhibited a lower polarization (51 mV) and a reversible capacity of 165.47 mAh g−1 after 30 cycles compared to the blank sample, which was highly compatible with LiFePO4.
KW - Additive
KW - Ionic liquid
KW - Lithium metal battery
UR - http://www.scopus.com/inward/record.url?scp=85151118308&partnerID=8YFLogxK
U2 - 10.1007/978-981-99-0553-9_32
DO - 10.1007/978-981-99-0553-9_32
M3 - Conference contribution
AN - SCOPUS:85151118308
SN - 9789819905522
T3 - Lecture Notes in Electrical Engineering
SP - 298
EP - 303
BT - Proceedings of the 3rd International Symposium on New Energy and Electrical Technology
A2 - Cao, Wenping
A2 - Hu, Cungang
A2 - Chen, Xiangping
PB - Springer Science and Business Media Deutschland GmbH
T2 - 3rd International Symposium on New Energy and Electrical Technology, ISNEET 2022
Y2 - 25 August 2022 through 27 August 2022
ER -