化工进展2024，Vol.43Issue(4)：1934-1943,10.DOI:10.16085/j.issn.1000-6613.2023-0615
一维多孔二氧化钛@碳纳米纤维复合材料的制备及储钠应用
Preparation and sodium storage application of one-dimensional porous TiO2@carbon nanofibers composite
胡飞燕 1彭嘉欢 1李珩 1徐朝华 1孙宁1
作者信息
- 1. 江门职业技术学院,广东江门 529090
- 折叠
摘要
Abstract
One-dimensional porous titanium dioxide@carbon nanofibers(P-TiO2@CNFs)composite with a lamellar branch structure was prepared by in situ electrospinning and concentrated alkali hydrothermal etching methods,and then employed as the anode material of sodium-ion batteries.The lamellar branching structure could effectively shorten the ion diffusion pathway and increase the contact area between electrolyte and active material.The porous structure provided more reactive sites,thus accelerating the charge transfer kinetics.Finally,the chemical bonding between TiO2 and carbon nanofibers could reinforce the structural stability of the composites.The surface morphology,microstructure,crystal structure,specific surface area,pore size and valence state of P-TiO2@CNFs were analyzed.The galvanostatic charge and discharge measurements and rate performance tests were performed on the NEWARE battery test system.The experimental results demonstrated that P-TiO2@CNFs exhibited excellent reversible capacity of 197mAh/g at 2.0A/g after 2000 cycles,and high specific capability of 61.7mAh/g at an ultrahigh current density of 30.0A/g.关键词
静电纺丝/二氧化钛/多孔结构/化学键/钠离子电池Key words
electrospinning/titanium dioxide/porous structure/chemical bond/sodium ion battery分类
信息技术与安全科学引用本文复制引用
胡飞燕,彭嘉欢,李珩,徐朝华,孙宁..一维多孔二氧化钛@碳纳米纤维复合材料的制备及储钠应用[J].化工进展,2024,43(4):1934-1943,10.
