N、B共掺杂MXene复合材料的制备及其电化学性能研究

doi:10.12028/j.issn.2095-4239.2018.0149

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (1): 130-137.doi: 10.12028/j.issn.2095-4239.2018.0149

N、B共掺杂MXene复合材料的制备及其电化学性能研究

孙贺雷, 李云飞, 易荣华, 王若冲, 周爱军, 孙义民

武汉工程大学材料科学与工程学院, 等离子体化学与新材料湖北省重点实验室, 湖北武汉 430205

收稿日期:2018-08-14 修回日期:2018-10-10 出版日期:2019-01-01 发布日期:2019-01-01
通讯作者: 孙义民,博士,副教授,主要研究方向为纳米材料化学和电化学等领域的基础和应用研究,E-mail:ymsun@wit.edu.cn。
作者简介:孙贺雷(1995-),男,硕士研究生,E-mail:witHLSUN@outlook.com
基金资助:
国家自然科学基金青年基金项目（51504168）。

Preparation and characterization of electrochemical properties of nitrogen and boron co-doped MXene composite materials

SUN Helei, LI Yunfei, YI Ronghua, WANG Ruochong, ZHOU Aijun, SUN Yimin

Hubei key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China

Received:2018-08-14 Revised:2018-10-10 Online:2019-01-01 Published:2019-01-01

摘要/Abstract

摘要： 通过对Ti₃AlC₂ MAX相陶瓷粉进行刻蚀、插层、超声处理，制备出片状Ti₃C₂T_x MXene。以离子液体1-丁基-3-甲基咪唑四氟硼酸盐作为杂原子掺杂的氮源和硼源，通过不同温度热处理，得到新型的N、B掺杂MXene（N，B-Ti₃C₂T_x）作为超级电容器的电极材料。考察了煅烧温度对其电容性能的影响，结果表明，最佳煅烧温度为300℃，此时电容性能得到有效提高。在扫描速率为100 mV/s时测得N，B-Ti₃C₂T_x-300℃的质量电容为65 F/g，是相同条件下Ti₃C₂T_x电容的5.5倍。EIS结果表明，N，B-Ti₃C₂T_x-300℃的接触电阻为0.52 Ω。循环稳定性测试表明，当电流密度为2 A/g时，充放电循环1000次后的电容保持率为84%。

关键词: MXene, 离子液体, 氮硼共掺杂, 电容性能

Abstract: Ti₃C₂T_x MXene sheets were prepared by etching Ti₃AlC₂ MAX ceramic powders, followed by intercalation and ultrasonic exfoliation. With an ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate, as a heteroatom-doped N and B source, a new type of N, B-doped MXene (N, B-Ti₃C₂T_x) was synthesized by heat treatment of the MXene at different temperatures, and used as an electrode material for supercapacitor fabrication. The influence of annealing temperature to capacitive performance was studied, and the results indicates that the capacitance performance was effectively improved at a calcination temperature of 300℃. The mass capacitance of N, B-Ti₃C₂T_x-300℃ was measured to be 65 F/g at a scan rate of 100 mV/s, which was 5.5 times higher than that of Ti₃C₂T_x. The EIS showed that the contact resistance of N, B-Ti₃C₂T_x-300℃ was 0.52 Ω. The capacitance retained 84% at a current density of 2 A/g after 1000 cycles.

Key words: MXene, ionic liquid, Nitrogen, boron co-doping, capacitive performance

中图分类号:

TM53

孙贺雷, 李云飞, 易荣华, 王若冲, 周爱军, 孙义民. N、B共掺杂MXene复合材料的制备及其电化学性能研究[J]. 储能科学与技术, 2019, 8(1): 130-137.

SUN Helei, LI Yunfei, YI Ronghua, WANG Ruochong, ZHOU Aijun, SUN Yimin. Preparation and characterization of electrochemical properties of nitrogen and boron co-doped MXene composite materials[J]. Energy Storage Science and Technology, 2019, 8(1): 130-137.

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N、B共掺杂MXene复合材料的制备及其电化学性能研究

Preparation and characterization of electrochemical properties of nitrogen and boron co-doped MXene composite materials

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