TY - JOUR
T1 - Multifunctional Silanization Interface for High-Energy and Low-Gassing Lithium Metal Pouch Cells
AU - Gao, Yuliang
AU - Guo, Manyi
AU - Yuan, Kai
AU - Shen, Chao
AU - Ren, Zengying
AU - Zhang, Kun
AU - Zhao, Hui
AU - Qiao, Fahong
AU - Gu, Jinlei
AU - Qi, Yaqin
AU - Xie, Keyu
AU - Wei, Bingqing
N1 - Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Lithium (Li) metal has attracted unprecedented attention as the ultimate anode material for future rechargeable batteries, but the electrochemical behavior (such as Li dendrites and gassing problems) in real Li metal pouch cells has received little attention. To achieve realistic high-energy Li metal batteries, the designed solid electrolyte interface to suppress both Li dendrites and catastrophic gassing problems is urgently needed at cell level. Here, an efficient multifunctional silanization interface (MSI) is proposed for high-energy Li metal pouch cells. Such an MSI not only guides uniform nucleation and growth of Li metal but also suppresses interfacial parasitic reactions between Li metal and electrolyte. As a result, under harsh conditions (negative to positive electrode capacity ratio of 2.96 and electrolyte weight to cathode capacity ratio of 2.7 g Ah−1), a long-running lifespan (over 160 cycles with a capacity retention of 96% at 1 C), and low-gassing behavior of realistic high-energy Li metal pouch cell (1 Ah, 300 Wh kg−1) is achieved. This work opens a promising avenue toward the commercial applications of high-energy Li metal batteries.
AB - Lithium (Li) metal has attracted unprecedented attention as the ultimate anode material for future rechargeable batteries, but the electrochemical behavior (such as Li dendrites and gassing problems) in real Li metal pouch cells has received little attention. To achieve realistic high-energy Li metal batteries, the designed solid electrolyte interface to suppress both Li dendrites and catastrophic gassing problems is urgently needed at cell level. Here, an efficient multifunctional silanization interface (MSI) is proposed for high-energy Li metal pouch cells. Such an MSI not only guides uniform nucleation and growth of Li metal but also suppresses interfacial parasitic reactions between Li metal and electrolyte. As a result, under harsh conditions (negative to positive electrode capacity ratio of 2.96 and electrolyte weight to cathode capacity ratio of 2.7 g Ah−1), a long-running lifespan (over 160 cycles with a capacity retention of 96% at 1 C), and low-gassing behavior of realistic high-energy Li metal pouch cell (1 Ah, 300 Wh kg−1) is achieved. This work opens a promising avenue toward the commercial applications of high-energy Li metal batteries.
KW - gassing
KW - lithium metal anodes
KW - multifunctional silanization interface
KW - pouch cells
UR - http://www.scopus.com/inward/record.url?scp=85076342199&partnerID=8YFLogxK
U2 - 10.1002/aenm.201903362
DO - 10.1002/aenm.201903362
M3 - 文章
AN - SCOPUS:85076342199
SN - 1614-6832
VL - 10
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 4
M1 - 1903362
ER -