WS<sub>2</sub>纳米结构的构筑及其储能性能研究

摘要针对市场对于高性能储锂、储钠负极材料的巨大需求和解决金属硫化物存在的关键制约问题，设计并开发了一系列纳米棒、纳米块和微米球等不同形貌和纳米结构的硫化钨，研究了形貌和石墨烯表面修饰对硫化钨储能性能的影响。研究结果表明：相比于WS₂纳米块和WS₂微米球，WS₂纳米棒比表面积更大、结晶性更好，展现了更好的储能性能。进一步通过冷冻干燥法，在WS₂纳米棒表面包裹上一层石墨烯，有效地提升了所制硫化钨的循环稳定性和倍率性能。在500 mA·g^-1下循环500圈，其储钠放电容量仍保持在65.9 mAh·g^-1，在1 000 mA·g^-1下循环500圈，其储锂放电容量可保持在288.3 mAh·g^-1。

	Service

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	Email Alert
	RSS
	作者相关文章
	柏玲
	方言武
	谷小天
	蔡宇晴
	张宸宇
	张恩聪
	余学治
	高陈陈
	张萌
	黄镇东

关键词：二硫化钨；石墨烯；纳米线；纳米块；纳米结构微球；储能性能

Abstract： In response to the market's huge demand for high-performance lithium storage and sodium storage anode materials, and in order to solve the key limitations of metal sulfides, a series of tungsten sulfides with different morphology and nanostructures such as nanorods, nanoblocks and microspheres are designed and successfully developed. The experimental results indicate that WS₂ nanorods show a better energy storage performance than WS₂ nanoblocks and microspheres, due to the larger specific surface area, short diffusion distance and better crystallinity. Furthermore, a layer of graphene is coated on the surface of WS₂ nanorods as a modification layer by freeze-drying method. As a results, the structural stability and rate capability of the as-prepared graphene@WS₂ nanorods composites are effectively improved. Therefore, sodium-ion storage capacity of as-prepared graphene@WS₂ nanorods composites is still maintained at 65.9 mAh·g^-1 after being cycled at 500 mA·g^-1 for 500 cycles. And the corresponding lithium-ion storage capacity can be maintained at 288.3 mAh·g^-1 after being cycled at 1 000 mA·g^-1 for 500 cycles.

Keywords： tungsten disulfides； graphene； nanowires； nanoblocks； nanostructured microspheres； energy storage performance

Received 2019-09-10;

Fund:国家自然科学基金（61974072）；江苏省自然科学基金（BK20181396）和江苏省高校自然科学基金（18KJB430020）。

Corresponding Authors: 黄镇东,E-mail:iamzdhuang@njupt.edu.cn。 Email: iamzdhuang@njupt.edu.cn

About author: 柏玲(1984-),女,硕士研究生,助理实验员,现从事储能材料纳米结构的构筑方面的研究。

引用本文:

柏玲, 方言武, 谷小天, 蔡宇晴, 张宸宇, 张恩聪, 余学治, 高陈陈, 张萌, 黄镇东.WS₂纳米结构的构筑及其储能性能研究[J]. 化学工业与工程, 2020,37(1): 58-68

Bai Ling, Fang Yanwu, Gu Xiaotian, Cai Yuqing, Zhang Chenyu, Zhang Encong, Yu Xuezhi, Gao Chenchen, Zhang Meng, Huang Zhendong.Construction and Energy Storage Properties of WS₂ Nanostructures[J]. Chemcial Industry and Engineering, 2020,37(1): 58-68

[1] Xia D, Gong F, Pei X, et al. Molybdenum and tungsten disulfides-based nanocomposite films for energy storage and conversion:A review[J]. Chemical Engineering Journal, 2018, 348:908-928
[2] Srinivaas M, Wu C, Duh J, et al. Highly rich 1 T metallic phase of few-layered WS₂ nanoflowers for enhanced storage of lithium-ion batteries[J]. ACS Sustainable Chemistry & Engineering, 2019, 7(12):10363-10370
[3] Huang J, Wei Z, Liao J, et al. Molybdenum and tungsten chalcogenides for lithium/sodium-ion batteries:Beyond MoS₂[J]. Journal of Energy Chemistry, 2019, 33:100-124
[4] Ren J, Ren R, Lv Y. WS₂-Decorated graphene foam@CNTs hybrid anode for enhanced lithium-ion storage[J]. Journal of Alloys and Compounds, 2019, 784:697-703
[5] Xu X, Li X, Zhang J, et al. Surfactant assisted electrospinning of WS₂ nanofibers and its promising performance as anode material of sodium-ion batteries[J]. Electrochimica Acta, 2019, 302:259-269
[6] Huang Y, Jiang Y, Ma Z, et al. Seaweed-Liked WS₂/rGO enabling ultralong cycling life and enhanced rate capability for lithium-ion batteries[J]. Nanomaterials, 2019, 9(3):469,doi:10.3390/nano9030469
[7] Lim Y, Ko Y, Park J, et al. Morphology-Controlled WO₃ and WS₂ nanocrystals for improved cycling performance of lithium ion batteries[J]. Journal of Electrochemical Science and Technology, 2019, 10(1):89-97
[8] Debela T, Lim Y, Seo H, et al. Two-Dimensional WS₂@Nitrogen-doped graphite for high-performance lithium ion batteries:Experiments and molecular dynamics simulations[J]. ACS Applied Materials & Interfaces, 2018, 10(44):37928-37936
[9] Li J, Yan H, Wei W, et al. Enhanced lithium storage performance of liquid-phase exfoliated graphene supported WS₂ heterojunctions[J]. ChemElectroChem, 2018, 5(21):3222-3228
[10] Liu H, Huang Z, Wu G, et al. A novel WS₂/NbSe₂ vdW heterostructure as an ultrafast charging and discharging anode material for lithium-ion batteries[J]. Journal of Materials Chemistry A, 2018, 6(35):17040-17048
[11] Song Y, Bai S, Zhu L, et al. Tuning pseudocapacitance via C-S bonding in WS₂ nanorods anchored on N, S codoped graphene for high-power lithium batteries[J]. ACS Applied Materials & Interfaces, 2018, 10(16):13606-13613
[12] Ren J, Wang Z, Yang F, et al. Freestanding 3D single-wall carbon nanotubes/WS₂ nanosheets foams as ultra-long-life anodes for rechargeable lithium ion batteries[J]. Electrochimica Acta, 2018, 267:133-140
[13] Wu C, Zeng X, He P, et al. Flexible WS₂@CNFs membrane electrode with outstanding lithium storage performance derived from capacitive behavior[J]. Advanced Materials Interfaces, 2018, 5(3):1701080
[14] Zou J, Liu C, Yang Z, et al. Multilayer-Cake WS₂/C nanocomposite as a high-performance anode material for lithium-ion batteries:"Regular" and "Alternate"[J]. Chem Electro Chem, 2017, 4(9):2232-2236
[15] Pang Q, Gao Y, Zhao Y, et al. Improved lithium-ion and sodium-ion storage properties from few-layered WS₂ nanosheets embedded in a mesoporous CMK-3 matrix[J]. Chemistry-A European Journal, 2017, 23(29):7074-7080
[16] Wang X, Huang J, Li J, et al. Improved Na storage performance with the involvement of nitrogen-doped conductive carbon into WS₂ nanosheets[J]. ACS Applied Materials & Interfaces, 2016, 8(36):23899-23908
[17] Zeng X, Ding Z, Ma C, et al. Hierarchical nanocomposite of hollow N-doped carbon spheres decorated with ultrathin WS₂ nanosheets for high-performance lithium-ion battery anode[J]. ACS Applied Materials & Interfaces, 2016, 8(29):18841-18848
[18] Lim Y, Wang Y, Kong D, et al. Cubic-Shaped WS₂ nanopetals on a Prussian blue derived nitrogen-doped carbon nanoporous framework for high performance sodium-ion batteries[J]. Journal of Materials Chemistry A, 2017, 5(21):10406-10415
[19] Yin M, Yu L, Liu S. Synthesis of thickness-controlled cuboid WO₃ nanosheets and their exposed facets-dependent acetone sensing properties[J]. Journal of Alloys and Compounds, 2017, 696:490-497
[20] Wang C, Feng C, Wang M, et al. One-Pot synthesis of hierarchical WO₃ hollow nanospheres and their gas sensing properties[J]. RSC Advances, 2015, 5(38):29698-29703