期刊
JOURNAL OF POWER SOURCES
卷 374, 期 -, 页码 205-210出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.10.057
关键词
Lithium metal anode; Vertical graphene array; Electrodeposition; Melt-infusion
资金
- National Natural Science Foundation of China [51271167]
- Program for Innovative Research Team in University of Ministry of Education of China [IRT13037]
Efficient and stable operation of a lithium metal anode has become the enabling factor for next-generation high energy density storage system. Here, vertical graphene (VG) arrays are used as the scaffold structure for high performance Li metal batteries. The melt infusion method is employed to encapsulate Li inside the VG scaffold structure, and the lithiophilic Si layer is coated onto the array surface by magnetron sputtering to assist this melt infusion process. The porous scaffold structure can control the volume expansion and inhibit the formation of dendritic lithium significantly, leading to the excellent electrochemical performance of the Li composite anode. In addition, the Li-S full batteries with the composite anode display enhanced cycling reversibility.
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