宏量制备层状Ti3C2及其超级电容的性能

doi:10.11901/1005.3093.2020.167

材料研究学报

2020, Vol. 34

Issue (11): 861-867 DOI: 10.11901/1005.3093.2020.167

研究论文

本期目录 | 过刊浏览

宏量制备层状Ti₃C₂及其超级电容的性能

杨占鑫, 吴琼(

), 任奕桥, 屈凯凯, 张哲豪, 仲为礼, 范广宁, 齐国超

辽宁工业大学材料科学与工程学院锦州 121001

Massive Preparation and Supercapacitor Performance of Layered Ti₃C₂

YANG Zhanxin, WU Qiong(

), REN Yiqiao, QU Kaikai, ZHANG Zhehao, ZHONG Weili, FAN Guangning, QI Guochao

School of Material Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China

引用本文:

杨占鑫, 吴琼, 任奕桥, 屈凯凯, 张哲豪, 仲为礼, 范广宁, 齐国超. 宏量制备层状Ti₃C₂及其超级电容的性能[J]. 材料研究学报, 2020, 34(11): 861-867.
Zhanxin YANG, Qiong WU, Yiqiao REN, Kaikai QU, Zhehao ZHANG, Weili ZHONG, Guangning FAN, Guochao QI. Massive Preparation and Supercapacitor Performance of Layered Ti₃C₂[J]. Chinese Journal of Materials Research, 2020, 34(11): 861-867.

全文: PDF(9587 KB) HTML

摘要:

将钛粉、铝粉、石墨粉和少量锡粉混合，用原位烧结技术宏量制备高纯度前驱体材料Ti₃AlC₂，再以浓氢氟酸为刻蚀剂进行选择性刻蚀，改变刻蚀时间宏量制备出层间距可调节的层状剥离Ti₃C₂。使用X射线衍射和场发射扫描电子显微镜分别表征了Ti₃AlC₂和Ti₃C₂的结构和层间距微观形貌，并对用Ti₃C₂制成的电极进行了电化学性能测试分析。结果表明，相比其它在相同条件下制备的电极其比容量大幅度提高，且具有良好的超级电容性能。

关键词 ：材料合成与加工工艺, Ti₃AlC₂, Ti₃C₂, 选择性刻蚀, 比容量

Abstract：

The high-purity precursor material Ti₃AlC₂ was prepared via in situ sintering technology with mixed powders of titanium, aluminum, graphite and a small amount of tin as raw material by changing the ratio of powders and sintering time. Then the precursor material Ti₃AlC₂ was subjected to selective etching with concentrated hydrofluoric acid, and finally massive material of layered Ti₃C₂ with adjustable layer spacing was prepared by changing the etching time. The microstructure and microscopic morphology of the layer spacing of Ti₃AlC₂ and Ti₃C₂ were characterized by X-ray diffractometer and field emission scanning electron microscopy and their electrochemical performance was comparatively assessed. Among others, the specific capacity of the present prepared electrode under the same condition is greatly improved, showing good performance of supercapacitor.

Key words： synthesizing and processing technics for materials Ti₃AlC₂ Ti₃C₂ selective etching specific capacity

收稿日期: 2020-05-18

ZTFLH:

TQ152

基金资助:辽宁省教育厅高校基本科研项目(JQL201715404)

作者简介: 杨占鑫，男，1996年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.167 或 https://www.cjmr.org/CN/Y2020/V34/I11/861

图1 选择性刻蚀高纯Ti3AlC2制备层状剥离Ti3C2材料和电化学性能测试示意图

图2 烧结温度不同保温30 min的3Ti/1.2Al/1.9C样品的X射线衍射图谱、在1400℃保温30 min的3Ti/1.2Al/1.9C样品的X射线衍射图谱、烧结温度不同的3Ti/1.2Al/1.9C样品中Ti3AlC2的质量百分数以及刻蚀不同时间的Ti3C2的X射线衍射图谱

图3 将前驱体Ti3AlC2刻蚀不同时间制备的Ti3C2 的SEM照片

图4 Ti3AlC2电极和不同选择性刻蚀时间Ti3C2电极的CV曲线，在扫描速度为20 mV/s；Ti3C2-24 h电极不同扫描速度的CV曲线；Ti3AlC2和不同刻蚀时间Ti3C2电极的GCD曲线，电流密度为1 A/g；T3C2-24 h电极不同电流密度的GCD曲线；前驱体材料Ti3AlC2和不同刻蚀时间Ti3C2电极的交流阻抗图谱以及T3C2-24 h电极的长循环性能

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