Abstract
The new electrode materials are critically important for the development of lithium-ion batteries (LIBs). Herein, we report the synthesis of Germanium sulfide -graphene composite (GeS-G) by facile sonication which exhibits the excellent cycling performance for lithium-ion batteries. Under the condition of charge-discharge rate of 50 mA·g−1 and voltage window of 0.005–3 V, the specific capacity of GeS-G is 170 mAh·g−1 after 100 cycles, which is significantly higher than that of pure GeS. The results of the present work imply that the nanostructure of GeS-G is the potential electrode materials for application in high-performance lithium-ion batteries and enrich the gene bank of lithium-ion battery materials.
Highlights
With the increase of energy demand, the research of energy storage technology has attracted increasing level of attention [1,2,3,4]
The results clearly show that the synthesized Germanium sulfide -graphene composite (GeS-G) composites have the characteristic peaks of both GeS (JCPDS No.71–0306) and graphene (JCPDS No.75-2078)
The results show that the GeS and graphene in the GeS-G composite have the lateral dimensions of 75~250 nm and 950~2000 nm, respectively
Summary
Chen Li1, Xiaoyun Xu2 , Tingting Song, Xinyu Zhu, Yongtao Li1 , Hong Jia and Yu Liu.
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