Green one-step synthesis of SnS2 quantum dots/S-doped reduced graphene oxide composite for superior lithium storage

被引:9
作者
Zhang, Bin [1 ]
Zhou, Xiaozhong [1 ]
Peng, Hui [1 ]
Zhu, Chunyan [1 ]
Wang, Wuqiang [1 ]
Lei, Ziqiang [1 ]
机构
[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecofunct Polymer Mat Minist Educ, Key Lab Ecoenvironm Polymer Mat Gansu Prov, Lanzhou 730070, Gansu, Peoples R China
基金
中国国家自然科学基金;
关键词
SnS2; Reduced graphene oxide; Quantum dots; Lithium-ion battery; HIGH-PERFORMANCE ANODE; ION BATTERIES; LI-ION; CYCLING STABILITY; HIGH-CAPACITY; SODIUM; NANOSHEETS; HETEROSTRUCTURES; AEROGELS; SHEETS;
D O I
10.1007/s11581-019-03175-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
SnS2 has been considered as one of the most potential anode materials for lithium storage due to its high theoretical capacity. However, the SnS2-based electrodes still suffer from unsatisfied electrochemical lithium-storage performance due to the intrinsic poor conductivity, large volume change during cycles, and great irreversibility of the initial conversion reactions. Herein, SnS2 quantum dots (QDs) are uniform fixed in S-doped reduced graphene oxide (rGO) nanosheets or nanoscrolls by a simple green one-step hydrothermal method, which deliver superior lithium-storage performance, such as a high initial reversible capacity of 1151 mA h g(-1) at a current density of 200 mA g(-1), high capacity retention of 87.7% after 300 cycles at 500 mA g(-1), and superior rate capacity of 314 mA h g(-1) at 5000 mA g(-1).
引用
收藏
页码:95 / 103
页数:9
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