TY - JOUR
T1 - Spatially anchoring the lithiophilic composites within the mixed-conducting phase
T2 - A hybrid storage mechanism enabled by the Al-Si@AlSiOX composite
AU - Li, Shaowen
AU - Jiang, Peie
AU - Wang, Ke
AU - Sun, Changchun
AU - Tang, Xiaoyu
AU - Wu, Weiwei
AU - Zhao, Wenyu
AU - Zhao, Ting
AU - Ma, Yue
AU - Wei, Bingqing
N1 - Publisher Copyright:
© 2020
PY - 2021/8/1
Y1 - 2021/8/1
N2 - The soaring demand for high-energy–density lithium batteries necessitates the technological innovation of anodes with high gravimetric capacity, cycling durability, and the comparable production cost as the graphite anodes. Here we report an aluminothermic method to develop the multifunctional Al-Si@AlSiOX composite for various types of battery configurations. Without additional post-treatment after the aluminothermic process, the multi-components in the composite enable the robust cyclability and high Coulombic efficiency in the full-cell prototype. Additionally, we quantitatively analyze the capacity contribution ratio from the lithium alloying and metallic plating processes in the hybrid metallic batteries; the dynamic phasic evolution analysis further confirms the mixed-conducting properties of the interconnected Li-Al alloy/LiAlSiOX network to boost the electrode kinetics. These features render the Al-Si@AlSiOX composite anode the potential use in the energy-dense metallic batteries with the average CE of higher than 99.5% (0.25 mA cm−2, 1 mAh cm−2) and the stabilized lithium deposition amount up to 10 mAh cm−2.
AB - The soaring demand for high-energy–density lithium batteries necessitates the technological innovation of anodes with high gravimetric capacity, cycling durability, and the comparable production cost as the graphite anodes. Here we report an aluminothermic method to develop the multifunctional Al-Si@AlSiOX composite for various types of battery configurations. Without additional post-treatment after the aluminothermic process, the multi-components in the composite enable the robust cyclability and high Coulombic efficiency in the full-cell prototype. Additionally, we quantitatively analyze the capacity contribution ratio from the lithium alloying and metallic plating processes in the hybrid metallic batteries; the dynamic phasic evolution analysis further confirms the mixed-conducting properties of the interconnected Li-Al alloy/LiAlSiOX network to boost the electrode kinetics. These features render the Al-Si@AlSiOX composite anode the potential use in the energy-dense metallic batteries with the average CE of higher than 99.5% (0.25 mA cm−2, 1 mAh cm−2) and the stabilized lithium deposition amount up to 10 mAh cm−2.
KW - Aluminothermic reaction
KW - Capacity contribution ratio
KW - High capacity anode
KW - Lithiophilic alloy
KW - Multifunctional electrode
UR - http://www.scopus.com/inward/record.url?scp=85097471864&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2020.127915
DO - 10.1016/j.cej.2020.127915
M3 - 文章
AN - SCOPUS:85097471864
SN - 1385-8947
VL - 417
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 127915
ER -