摘要
The practical application of the lithium anode in lithium metal batteries(LMBs) has been hindered by the uncontrollable growth of lithium dendrite and the high volumetric change during cycling. Herein, the in situ formed three-dimensional(3D) lithium-boron(Li-B) alloy is suggested as an excellent alternative to the Li metal, in which the 3D Li B skeleton can mitigate the growth of Li dendrites and volumetric change. In this study, the Li-B alloy anodes with different B contents were manufactured by high-temperature melting. It was found that the boron content had a significant effect on the electrochemical performance of the Li-B alloy. The Li-B alloy with the least B content(10 wt%, 10LiB) demonstrated the lowest overpotential of 0.0852 V after 300 h and the lowest interface resistance. However, the full cell with 15LiB as the anode displayed the best cycling performance of 115 m Ah·g^(-1) after 100 cycles with a columbic efficiency greater than 97%. The obtained results suggest that the in situ formed three-dimensional Li-B alloy anode can be an excellent alternative to the Li anode via tuning B contents for next-generation high energy density LMBs.
出处
《Rare Metals》
SCIE
EI
CAS
CSCD
2021年第12期3494-3500,共7页
稀有金属（英文版）
基金
financially supported by the National Natural Science Foundation of China (Nos. U1904216 and51771236)
the Science Fund for Distinguished Young Scholars of Hunan Province (No. 2018JJ1038)
the Innovation-Driven Project of Central South University (No. 2020CX007)
the State Key Laboratory of Powder Metallurgy, Central South University。
作者简介
Zhi-Jian Liu,e-mail:csulzjl208@163.com;Li-Bao Chen,e-mail:lbchen@csu.edu.cn。
