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二维介孔氮掺杂碳/石墨烯纳米片的可控合成及其高性能微型超级电容器

杨志 周锋 张鸿涛 秦洁琼 吴忠帅

杨志, 周锋, 张鸿涛, 秦洁琼, 吴忠帅. 二维介孔氮掺杂碳/石墨烯纳米片的可控合成及其高性能微型超级电容器. 新型炭材料. doi: 10.1016/S1872-5805(22)60633-4
引用本文: 杨志, 周锋, 张鸿涛, 秦洁琼, 吴忠帅. 二维介孔氮掺杂碳/石墨烯纳米片的可控合成及其高性能微型超级电容器. 新型炭材料. doi: 10.1016/S1872-5805(22)60633-4
YANG Zhi, ZHOU Feng, ZHANG Hong-tao, QIN Jie-qiong, WU Zhong-shuai. Controllable synthesis of 2D mesoporous nitrogen-doped carbon/graphene nanosheets for high-performance micro-supercapacitors. New Carbon Mater.. doi: 10.1016/S1872-5805(22)60633-4
Citation: YANG Zhi, ZHOU Feng, ZHANG Hong-tao, QIN Jie-qiong, WU Zhong-shuai. Controllable synthesis of 2D mesoporous nitrogen-doped carbon/graphene nanosheets for high-performance micro-supercapacitors. New Carbon Mater.. doi: 10.1016/S1872-5805(22)60633-4

二维介孔氮掺杂碳/石墨烯纳米片的可控合成及其高性能微型超级电容器

doi: 10.1016/S1872-5805(22)60633-4
基金项目: 国家自然科学基金(22125903,51872283,22109040);河南农业大学拔尖人才项目(30500947)
详细信息
    作者简介:

    杨志:杨 志,硕士研究生. E-mail:yz18637399871@163.com

    通讯作者:

    秦洁琼,教授. E-mail:qinjieqiong@henau.edu.cn

    吴忠帅,研究员. E-mail:wuzs@dicp.ac.cn

Controllable synthesis of 2D mesoporous nitrogen-doped carbon/graphene nanosheets for high-performance micro-supercapacitors

Funds: National Natural Science Foundation of China (22125903, 51872283, 22109040); Top-Notch Talent Program of Henan Agricultural University (30500947)
More Information
  • 摘要: 石墨烯基二维介孔材料能够有效耦合石墨烯基底、功能化材料和介孔结构的优势,被认为是一种理想的微型超级电容器电极材料。基于此,本文以苯胺为前驱体,氧化石墨烯为二维导向剂,二氧化硅纳米球为介孔模板,采用双模板界面诱导自组装法制备介孔氮掺杂碳/石墨烯(mNC/G)纳米片,并实现了其介孔孔径的精确调控和电化学性能的优化。研究表明,7 nm孔径的介孔氮掺杂碳/石墨烯(mNC/G-7)展现出267 F g−1的高比电容,且应用于准固态平面微型超级电容器表现出21.0 F cm−3的体积比电容和1.9 mWh cm−3的体积能量密度,证明了该二维介孔氮掺杂碳/石墨烯纳米片在微型超级电容器应用方面具有良好的前景。
  • 图  1  mNC/G的合成示意图

    Figure  1.  Schematic illustration of the synthesis of mNC/G.

    图  2  mNC/G的结构与形貌表征图:(a-c)mNC/G-7、mNC/G-12和mNC/G-22的TEM图,(d-f)mNC/G-7、mNC/G-12和mNC/G-22的HRTEM图,(g)mNC/G-7的等温吸附线(插图为孔径分布曲线),(h)mNC/G-7的AFM图像,(i)mNC/G-7的XPS N 1s拟合图谱

    Figure  2.  Characterization of mNC/G. (a-c) TEM images of mNC/G-7, mNC/G-12 and mNC/G-22, (d-f) HRTEM of mNC/G-7, mNC/G-12 and mNC/G-22, (g) nitrogen adsorption-desorption isotherm of mNC/G-7 (Inset: pore size distribution profile), (h) AFM image and thickness of mNC/G-7, (i) XPS spectrum of N 1s for mNC/G-7.

    图  3  mNC/G的电化学性能:(a)mNC/G-7的CV曲线,(b)mNC/G-7的GCD曲线,(c)mNC/G-7、mNC/G-12和mNC/G-22在1 A g−1时的GCD曲线,(d)mNC/G-7、mNC/G-12和mNC/G-22比电容随电流密度变化的曲线,(e)mNC/G-7、mNC/G-12和mNC/G-22的EIS图,(f)mNC/G-7、mNC/G-12和mNC/G-22的循环性能

    Figure  3.  Electrochemical performance of mNC/G. (a) CV curves and (b) GCD profiles of mNC/G-7. (c) GCD profiles at 1 A g−1, (d) specific capacity versus current density, (e) EIS plots and (f) cycling stability of mNC/G-7, mNC/G-12 and mNC/G-22.

    图  4  mNC/G-MSCs的电化学性能:(a)微电极的俯视SEM和(b)横截面SEM图,(c)mNC/G-MSCs在5-100 mV s−1下的CV曲线,(d)mNC/G-MSCs在0.05-1 mA cm−2下的GCD曲线,(e)mNC/G-MSCs比电容随扫描速率的变化曲线,(f,g)1-3个器件并联的CV和GCD曲线,(h,i)是1-3个器件串联的CV和GCD曲线

    Figure  4.  Electrochemical performance of mNC/G-MSCs. (a, b) SEM images of microelectrodes (top-view and cross-section), (c) CV curves measured at scan rates of 5-100 mV s−1, (d) GCD profiles tested at current density of 0.05-1 mA cm−2, and (e) specific capacity versus scan rates of mNC/G-MSCs, (f, g) CV curves and GCD profiles of three mNC/G-MSCs connected in parallel, (h, i) and in series.

    图  5  mNC/G-MSCs的Ragone图和展示图:(a)mNC/G-MSCs的面积能量密度和功率密度曲线,(b)mNC/G-MSCs体积能量密度和功率密度曲线;(c,d)串联mNC/G-MSCs点亮LCD的光学照片

    Figure  5.  Ragone plot and application photographs of mNC/G-MSCs. (a) Ragone plot of areal energy and power density of mNC/G-MSCs, (b) Ragone plot of volumetric energy and power density of mNC/G-MSCs, (c,d) optical images of LCDs powered by three serially-connected mNC/G-MSCs.

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  • 网络出版日期:  2022-07-29

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