Nitrogen-doped Ti3C2 MXene films with low -F terminal groups achieving an ultrahigh volumetric capacitance

被引:11
|
作者
Luo, Yangyang [1 ,2 ]
Jia, Shuting [1 ,2 ]
Yi, Yuanjie [1 ,2 ]
Liu, Xiong [1 ,2 ]
Zhang, Gaini [1 ,2 ]
Yang, Huijuan [1 ,2 ]
Li, Wenbin [1 ,2 ]
Wang, Jingjing [1 ,2 ]
Li, Xifei [1 ,2 ,3 ]
机构
[1] Xian Univ Technol, Inst Adv Electrochem Energy, Key Lab Adv Batteries Mat Elect Vehicles China Pe, Xian 710048, Peoples R China
[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
[3] Fuzhou Univ, Coll Mat Sci Engn, Fuzhou 350108, Fujian, Peoples R China
基金
中国博士后科学基金;
关键词
Supercapacitors; Nitrogen doping; Film electrode; Volumetric energy density; 2-DIMENSIONAL NANOMATERIALS; TITANIUM CARBIDE; ELECTRODE; GRAPHENE; MECHANISM;
D O I
10.1016/j.jallcom.2023.173355
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Two-dimensional Ti3C2 MXene with high bulk density can act as prospective electrode material to construct high volumetric energy density supercapacitors. Herein, a series of nitrogen-doped Ti3C2 (N-Ti3C2) films are successfully synthesized by adjusting the quantity of urea using a facile solvothermal method. The incorporation of nitrogen atoms can enlarge interlayer spacing and diminish -F terminal groups of Ti3C2 to promote the diffusion and intercalation of electrolyte ions, and bring about defect sites to provide more electrochemical reactive sites, thus improving the specific capacitance of N-Ti3C2. As a result, the 2.0 N-Ti3C2 film shows the highest volumetric capacitance of 2898.5 F cm-3 at scan rate of 2 mV s-1 in 3 M H2SO4 solution, which is mainly attributed to its high pyridinic N content and low -F terminal groups. Density functional theory (DFT) calculations indicate that the doped N atoms have a higher adsorption energy for protons to enhance the pseudocapacitance of 2.0 N-Ti3C2 electrode, and the increased density of states demonstrate the improvement of its electric conductivity after N doping, which promotes the rate performance of 2.0 N-Ti3C2 electrode. The assembled symmetric supercapacitor based on 2.0 N-Ti3C2 film delivers a high volumetric energy density of 40.8 Wh L-1 and good cycling stability. Our work provides an effective and alternative strategy to improve capacitance of other MXenes for highperformance supercapacitors.
引用
收藏
页数:10
相关论文
共 50 条
  • [1] Achieving ultrahigh gravimetric and volumetric supercapacitors with nitrogen-doped MXene nanomesh
    Zheng, Wei
    Yang, Li
    Yin, Xiaodan
    Feng, Hanchen
    Fan, Junjiang
    Zhang, Peigen
    Ying, Guobing
    Sun, Zhengming
    CHEMICAL ENGINEERING JOURNAL, 2024, 500
  • [2] Nitrogen-Doped Ti3C2 MXene: Mechanism Investigation and Electrochemical Analysis
    Lu, Chengjie
    Yang, Li
    Yan, Bingzhen
    Sun, Liangbo
    Zhang, Peigen
    Zhang, Wei
    Sun, ZhengMing
    ADVANCED FUNCTIONAL MATERIALS, 2020, 30 (47)
  • [3] Methanol and Diethanolamine Assisted Synthesis of Flexible Nitrogen-Doped Ti3C2 (MXene) Film for Ultrahigh Volumetric Performance Supercapacitor Electrodes
    Yang, Chenhui
    Tang, Yi
    Tian, Yapeng
    Luo, Yangyang
    Yin, Xingtian
    Que, Wenxiu
    ACS APPLIED ENERGY MATERIALS, 2020, 3 (01) : 586 - 596
  • [4] Solvothermal synthesis of in situ nitrogen-doped Ti3C2 MXene fluorescent quantum dots for selective Cu2+ detection
    Feng, Yefeng
    Zhou, Furong
    Deng, Qihuang
    Peng, Cheng
    CERAMICS INTERNATIONAL, 2020, 46 (06) : 8320 - 8327
  • [5] Nitrogen-doped Ti3C2Tx MXene electrodes for high-performance supercapacitors
    Wen, Yangyang
    Rufford, Thomas E.
    Chen, Xingzhu
    Li, Neng
    Lyu, Miaoqiang
    Dai, Liming
    Wang, Lianzhou
    NANO ENERGY, 2017, 38 : 368 - 376
  • [6] Synthesis of Nitrogen-Doped Two-Dimensional Ti3C2 with Enhanced Electrochemical Performance
    Tang, Yi
    Zhu, Jianfeng
    Wu, Wenling
    Yang, Chenhui
    Lv, Wenjing
    Wang, Fen
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2017, 164 (04) : A923 - A929
  • [7] Hybrid energy storage using nitrogen-doped graphene and layered-MXene (Ti3C2) for stable high-rate supercapacitors
    Momodu, Damilola
    Shayesteh Zeraati, Ali
    Lopez Pablos, Fernanda
    Sundararaj, Uttandaraman
    Roberts, Edward P. L.
    ELECTROCHIMICA ACTA, 2021, 388
  • [8] Nanoporous Nitrogen-Doped Ti3C2 Nanosheets as Efficient Electrocatalysts for Oxygen Reduction
    Zhang, Jin
    Zhang, Xinyao
    Yue, Wenbo
    ACS APPLIED NANO MATERIALS, 2022, 5 (08) : 11241 - 11248
  • [9] 3D Printing of Porous Nitrogen-Doped Ti3C2 MXene Scaffolds for High-Performance Sodium-Ion Hybrid Capacitors
    Fan, Zhaodi
    Wei, Chaohui
    Yu, Lianghao
    Xia, Zhou
    Cai, Jingsheng
    Tian, Zhengnan
    Zou, Guifu
    Dou, Shi Xue
    Sun, Jingyu
    ACS NANO, 2020, 14 (01) : 867 - 876
  • [10] Nitrogen-Doped Ti2C MXene Quantum Dots as Antioxidants
    Gou, Jingyun
    Zhao, Lin
    Li, Yan
    Zhang, Jinzhong
    ACS APPLIED NANO MATERIALS, 2021, 4 (11) : 12308 - 12315