TY - JOUR
T1 - Hybrid Lithium-Ion/Metal Electrodes Enable Long Cycle Stability and High Energy Density of Flexible Batteries
AU - Xie, Chuan
AU - Chang, Jian
AU - Shang, Jian
AU - Wang, Lei
AU - Gao, Yuan
AU - Huang, Qiyao
AU - Zheng, Zijian
N1 - Funding Information:
The authors acknowledge financial support from the Shenzhen Municipal Science and Technology Innovation Commission (SGDX20190816232209446) and Research Talent Hub for Innovation and Technology Fund (PRP/055/21FX). The authors also thank Prof. Yonghong Deng from the Southern University of Science and Technology and CAPCHEM for providing the LFP, LCO, and other materials for experiments.
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/8/19
Y1 - 2022/8/19
N2 - High-energy, stable, and flexible lithium batteries are highly demanded for next-generation flexible and wearable electronics. Although the cycling stability of flexible lithium-ion batteries (LIBs) is high, their energy density reaches the bottleneck because of the use of graphite anode. On the other hand, flexible lithium-metal batteries provide higher energy density because of the use of lithium (Li) metal anode, but the cycling stability is poor. Herein, a new type of flexible hybrid lithium-ion/metal battery (f-LIMB) is reported, which simultaneously possesses enhanced energy density, stable cycling behavior, and outstanding flexibility. f-LIMB is enabled by using the prelithiated carbon cloth as the anode, which improves the initial Coulombic efficiency by a prior formation of solid electrolyte interface, benefits the subsequent deposition of Li metal due to the preformed lithiophilic LixC6 compounds, and enhances the cycle life and energy density of batteries through a Li compensation mechanism. The f-LIMB full cell possesses an improved gravimetric and volumetric energy density by as much as 64% and 67%, in comparison to the flexible LIB counterpart, and pertains high capacity retention of 84% after 1000 charge/discharge cycles. In addition, the f-LIMB can be readily bent down to a small radius of 2.5 mm.
AB - High-energy, stable, and flexible lithium batteries are highly demanded for next-generation flexible and wearable electronics. Although the cycling stability of flexible lithium-ion batteries (LIBs) is high, their energy density reaches the bottleneck because of the use of graphite anode. On the other hand, flexible lithium-metal batteries provide higher energy density because of the use of lithium (Li) metal anode, but the cycling stability is poor. Herein, a new type of flexible hybrid lithium-ion/metal battery (f-LIMB) is reported, which simultaneously possesses enhanced energy density, stable cycling behavior, and outstanding flexibility. f-LIMB is enabled by using the prelithiated carbon cloth as the anode, which improves the initial Coulombic efficiency by a prior formation of solid electrolyte interface, benefits the subsequent deposition of Li metal due to the preformed lithiophilic LixC6 compounds, and enhances the cycle life and energy density of batteries through a Li compensation mechanism. The f-LIMB full cell possesses an improved gravimetric and volumetric energy density by as much as 64% and 67%, in comparison to the flexible LIB counterpart, and pertains high capacity retention of 84% after 1000 charge/discharge cycles. In addition, the f-LIMB can be readily bent down to a small radius of 2.5 mm.
KW - carbon cloth
KW - cycle stability
KW - flexible batteries
KW - hybrid lithium-ion/metal electrodes
KW - prelithiation
UR - http://www.scopus.com/inward/record.url?scp=85131962174&partnerID=8YFLogxK
U2 - 10.1002/adfm.202203242
DO - 10.1002/adfm.202203242
M3 - Journal article
AN - SCOPUS:85131962174
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 34
M1 - 2203242
ER -