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N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors

SHENG Lizhi ZHAO Yunyun HOU Baoquan XIAO Zhenpeng JIANG Lili FAN Zhuangjun

盛利志, 赵云云, 侯宝权, 肖振鹏, 江丽丽, 范壮军. 高性能超级电容器用高载量N掺杂层状多孔炭电极. 新型炭材料, 2021, 36(1): 179-188. doi: 10.1016/S1872-5805(21)60012-4
引用本文: 盛利志, 赵云云, 侯宝权, 肖振鹏, 江丽丽, 范壮军. 高性能超级电容器用高载量N掺杂层状多孔炭电极. 新型炭材料, 2021, 36(1): 179-188. doi: 10.1016/S1872-5805(21)60012-4
SHENG Lizhi, ZHAO Yunyun, HOU Baoquan, XIAO Zhenpeng, JIANG Lili, FAN Zhuangjun. N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors. New Carbon Mater., 2021, 36(1): 179-188. doi: 10.1016/S1872-5805(21)60012-4
Citation: SHENG Lizhi, ZHAO Yunyun, HOU Baoquan, XIAO Zhenpeng, JIANG Lili, FAN Zhuangjun. N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors. New Carbon Mater., 2021, 36(1): 179-188. doi: 10.1016/S1872-5805(21)60012-4

高性能超级电容器用高载量N掺杂层状多孔炭电极

doi: 10.1016/S1872-5805(21)60012-4
详细信息
  • 中图分类号: TB32

N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors

Funds: The authors acknowledge financial support from the National Natural Science Foundation of China (51902006, 51702117, 51672055, 51972342), Taishan Scholar Project of Shandong Province (ts20190922), Key Basic Research Projects of Natural Science Foundation of Shandong province (ZR2019ZD51), Department of Science and Technology of Jilin Province (20190103034JH, 20180520014JH), and Young Elite Scientist Sponsorship Program by Jilin Province Association for Science and Technology (192009), Education Department of Jilin Province (JJKH2021KJ)
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  • 摘要: 在保持快速充/放电特性的同时,提高超级电容器的能量密度将极大地扩展其应用领域。本文以野生箩藦壳为碳源、ZnCl2为活化剂、NH4Cl)为氮源,通过一步法制备了氮掺杂层状多孔炭(NPCM)作为高性能超级电容器电极材料。该NPCM材料具有高的电导率、较高的离子可接触比表面积和快速的离子传输通道,显示出高质量比容量(457 F/g)和面积比容量(47.8 μF/cm2)。在高负载(17.7 mg/cm2)下,材料仍显示出较高比容量(161 F/g)。此外,在1 mol/L Na2SO4电解液下,组装的NPCM//NPCM对称超级电容器可以在0.56 s内输出高能量密度(12.5 Wh/kg)和超高的功率密度(80 kW/kg)。
  • Figure  1.  Morphological characterization of NPCM: (a) SEM and (b-d) TEM images.

    Figure  2.  (a) N2 adsorption−desorption isotherms and (b) pore size distributions of samples.

    Figure  3.  (a) XRD and (b) Raman patterns of NPCM, PCM, and CM, (c) XPS spectra of NPCM, PCM, and CM (inset: possible locations for N and O incorporation into a carbon network), (d) atomic percentages of C, O and N and (e) high-resolution N 1s XPS spectrum of NPCM (Note: N-X, N-Q, N-5, N-6 denote oxidic, graphitic, pyrrolic and pyridinic nitrogen, respectively).

    Figure  4.  (a) CV curves of NPCM, PCM, and CM at a scan rate of 1 V s−1, (b) charge/discharge current as a function of the scan rate with a linear correlation coefficient of 0.994 for NPCM, (c) GCD curves of NPCM at various current densities, (d) GCD curves of NPCM, PCM, and CM at 50 A g−1, (e) gravimetric specific capacitances of NPCM, PCM, and CM, (f) specific capacitance versus square root of half-cycle time, (g) normalized area capacitances of NPCM compared with other heteroatom-doped carbons and activated carbons and (h) cycling stability of NPCM at a current density of 20 A g−1.

    Figure  5.  (a) Nyquist plots, (b) charge transfer resistance values (Rct, mΩ), (c) frequency responses and (d) relaxation time values (τ0, ms) of NPCM, PCM, and CM.

    Figure  6.  (a) CV and (b) GCD curves of the NPCM with different mass loadings from 1.0 to 17.7 mg cm−2 at 100 mV s−1 and 20 A g−1, respectively, (c) charge transfer resistance (Rct, Ω) and relaxation time constant (τ0, s) of the NPCM with different mass loadings, (d) CV curves of NPCM under 12.3 mg cm−2, (e) charge/discharge current as a function of scan rate with a linear correlation coefficient of 0.999 for the NPCM at 12.3 mg cm−2 and (f) specific capacitances of the NPCM with various mass loadings.

    Figure  7.  (a) CV curves of the NPCM//NPCM symmetric supercapacitor measured in various voltage windows at 50 mV s−1, (b) CV and (c) GCD curves of the NPCM//NPCM symmetric supercapacitor, (d) Ragone plot of the NPCM//NPCM symmetric supercapacitor and other symmetric supercapacitors previously reported in the literature and (e) cycling stability of the NPCM//NPCM symmetric supercapacitor at a current density of 20 A g−1 up to 20 000 cycles.

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  • 收稿日期:  2021-01-03
  • 修回日期:  2021-01-11
  • 刊出日期:  2021-02-01

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