Hard template-assisted N, P-doped multifunctional mesoporous carbon for supercapacitors and hydrogen evolution reaction

• Published in: Journal of materials science Vol. 56; no. 3; pp. 2385 - 2398
• Main Authors: Dong, Xusha, Liu, Xinwei, Chen, Huan, Xu, Xiaoyang, Jiang, Haichao, Gu, Chunlei, Li, Qing, Qiao, Shanlin, Zhang, Xiangjing, Hu, Yongqi
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.01.2021; Springer; Springer Nature B.V
• Subjects: Capacitance; Capacitors; Carbon; Catalysts; Characterization and Evaluation of Materials; Chemical synthesis; Chemistry and Materials Science; Classical Mechanics; Crystallography and Scattering Methods; Electrocatalysts; Electrode materials; Electron transfer; Electron transport; Energy Materials; Energy storage; Force and energy; Hydrogen; Hydrogen evolution reactions; Materials Science; Polymer Sciences; Silicon dioxide; Solid Mechanics; Supercapacitors
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-020-05303-0

Nonmetal mesoporous carbon exhibits environment friendliness and low cost, which attract much attention in energy storage and conversion. In this work, a N, P-doped mesoporous carbon (NPMC-T) was synthesized by the SiO 2 hard template. The mesoporous structure and high N, P content for NPMC-T are beneficial to expose more active sites and accelerate electron transfer, and contribute to exhibit remarkable electrocatalytic activity for supercapacitors and hydrogen evolution reaction application. NPMC-800 is applied as electrode material for supercapacitors and exhibits high specific capacitance (219 F g −1 at 1 A g −1 ). Meanwhile, the NPMC-T is used as electrocatalyst for HER and shows the good electrocatalytic performance with small Tafel slope of 52 mV dec −1 , low overpotential of 298 mV (10 mA cm −2 ) than that of most other reported analogous catalysts, and excellent stability (after 2000 cycles). This effective capability of N, P-doped multifunctional mesoporous carbon materials is expected to promote the application in supercapacitors and hydrogen evolution reaction widely. Graphic abstract A multifunctional non-metal mesoporous carbon electrocatalysis catalyst NPMC-800 was synthesized by the SiO 2 hard template method (BET surface area is 593.1 m 2 g −1 ). The mesoporous structure and N, P doping of NPMC-800 exhibited the high specific capacitance of 219 F g −1 at 1 A g −1 for supercapacitors, meanwhile, offered glorious electrocatalytic performance for HER with a low overpotential of 298 mV at 10 mA cm-2 , a small Tafel slope 52 mV dec −1 and the surpassing stability after 2000 cycles under acidic conditions.