Triton X-100辅助溶剂热法合成锂电池负极材料花型SnS<sub>2</sub>及其电化学性能*

doi:10.11901/1005.3093.2015.406

材料研究学报

2016, Vol. 30

Issue (1): 63-67 DOI: 10.11901/1005.3093.2015.406

研究论文

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Triton X-100辅助溶剂热法合成锂电池负极材料花型SnS₂及其电化学性能*

张娟¹, 陈秀娟²(

), 张鹏林¹

1. 省部共建有色金属先进加工与再利用国家重点实验室兰州 730050
2. 兰州理工大学机电工程学院兰州 730050

Synthesis and Electrochemical Properties of Flower-like SnS₂ by Triton X-100 Assisted Hydrothermal Method as Negative Electrode Material for Lithium Ion Batteries

ZHANG Juan¹, CHEN Xiujuan^2,^**(

), ZHANG Penglin¹

1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2. School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou 730050, China

引用本文:

张娟, 陈秀娟, 张鹏林. Triton X-100辅助溶剂热法合成锂电池负极材料花型SnS₂及其电化学性能*[J]. 材料研究学报, 2016, 30(1): 63-67.
Juan ZHANG, Xiujuan CHEN, Penglin ZHANG. Synthesis and Electrochemical Properties of Flower-like SnS₂ by Triton X-100 Assisted Hydrothermal Method as Negative Electrode Material for Lithium Ion Batteries[J]. Chinese Journal of Materials Research, 2016, 30(1): 63-67.

全文: PDF(2329 KB) HTML

摘要:

采用表面活性剂Triton X-100辅助溶剂热法合成花型纳米SnS₂, 研究了表面活性剂添加量(0-2 mL)对样品的成分、形貌及电化学性能的影响。X射线衍射光谱(XRD)和能谱(EDS)的测试结果表明: 合成的材料为单相SnS₂, 具有层状六方CdI₂型晶体结构; 扫描电镜(SEM)观察结果表明, Triton X-100在控制花型SnS₂形貌的过程中起了决定性作用, 当Triton X-100的添加量为0.5 mL时样品的结晶度最好, 花型结构饱满, 形貌最佳; 电化学性能测试结果表明: Triton X-100添加量为0.5 mL时, 在0.01-1.2 V电压范围及0.15C倍率下花型纳米SnS₂的首次放电比容量可达1598 mAhg^-1, 首次可逆比容量为656 mAhg^-1, 循环50次后可逆比容量为572 mAhg^-1, 容量保持率达到87.2%。

关键词 ：材料合成与加工工艺, Triton X-100, 溶剂热法, 花型纳米SnS2, 电化学性能

Abstract：

Flower-like nanostructured SnS₂ was synthesized by polyethylene glycol octylphenol ether(Triton X-100)-assisted hydrothermal method, the effect of the amount of surfactant Triton X-100 on the ingredient, morphology and electrochemical properties of the synthesized product was studied. Results show that the product is single-phase SnS₂ with crystal structure of hexagonal CdI₂. The Triton X-100 plays a dominative role in controlling the morphology of SnS₂. With a dosage of 0.5 mL Triton X-100 the synthesized SnS₂ possesses the highest degree of crystallinity with a fully flower-like morphology . A rechargeable Li-ion batteries with the as-prepared flowerlike nanostructured SnS₂ as anode exhibits excellent electrochemical performance with high initial discharge specific capacity 1598 mAhg^-1and reversible capacity 656 mAhg^-1 respectively, in a voltage range of 0.01-1.2 V and a rate of 0.15C. After 50 cycles with a rate of 0.15C, the specific capacities retain 572 mAhg^-1 and capacity retention rate can reach 87.2%.

Key words： synthesizing and processing technics Triton X-100 hydrothermal method flower-like SnS2 nanostructure electrochemical properties

收稿日期: 2015-07-15

基金资助:* 国家自然科学基金51161012资助项目

作者简介: 陈秀娟

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https://www.cjmr.org/CN/10.11901/1005.3093.2015.406 或 https://www.cjmr.org/CN/Y2016/V30/I1/63

图1 不同Triton X-100添加量样品的XRD图谱

图2 Triton X-100添加量为0.5 mL样品的EDS图谱

图3 不同Triton X-100添加量样品的SEM像

图4 电流密度为100 mAhg-1(0.15C)时不同Triton X-100添加量样品的充放电曲线

图5 电流密度为100 mAhg-1(0.15C)时不同Triton X-100添加量样品的循环性能曲线

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