在还原氧化石墨烯上生长硫化锡纳米片作为锂和钠离子电池的先进负极材料。

Grown SnS Nanosheets on rGO as an Advanced Anode Material for Lithium and Sodium Ion Batteries.

作者信息

Chen Hezhang, Zhang Bao, Zhang Jiafeng, Yu Wanjing, Zheng Junchao, Ding Zhiying, Li Hui, Ming Lei, Bengono D A Mifounde, Chen Shunan, Tong Hui

机构信息

School of Metallurgy and Environment, Central South University, Changsha, China.

School of Chemistry and Chemical Engineering, Central South University, Changsha, China.

出版信息

Front Chem. 2018 Dec 18;6:629. doi: 10.3389/fchem.2018.00629. eCollection 2018.

SnS nanosheets/reduced graphene oxide (rGO) composite was prepared by reflux condensation and hydrothermal methods. In this composite, SnS nanosheets grew on the surface of rGO nanosheets. The SnS/rGO composite as anode material was investigated both in lithium ion battery (LIB) and sodium ion battery (SIB) systems. The capacity of SnS/rGO electrode in LIB achieved 514 mAh g at 1.2 A g after 300 cycles. Moreover, the SnS/rGO electrode in SIB delivered a discharge capacity of 645 mAh g at 0.05 A g; after 100 cycles at 0.25 A g, the capacity retention still keep 81.2% relative to the capacity of the 6th cycle. Due to the introduction of rGO in the composite, the charge-transfer resistance became much smaller. Compared with SnS/C electrode, SnS/rGO electrode had higher discharge capacity and much better cycling performance.

通过回流冷凝和水热法制备了硫化锡（SnS）纳米片/还原氧化石墨烯（rGO）复合材料。在该复合材料中，SnS纳米片生长在rGO纳米片表面。对SnS/rGO复合材料作为锂离子电池（LIB）和钠离子电池（SIB）系统的负极材料进行了研究。在LIB中，SnS/rGO电极在1.2 A g的电流密度下循环300次后，容量达到514 mAh g。此外，在SIB中，SnS/rGO电极在0.05 A g的电流密度下放电容量为645 mAh g；在0.25 A g的电流密度下循环100次后，相对于第6次循环的容量，容量保持率仍为81.2%。由于复合材料中引入了rGO，电荷转移电阻变得小得多。与SnS/C电极相比，SnS/rGO电极具有更高的放电容量和更好的循环性能。