Citation: Tian-Yun WANG, Na HAN, De-Dong JIA, Hong-Qiang LI, Xiao-Jun HE. Preparation and supercapacitive properties of B, N co⁃doped porous carbons[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(2): 309-316. doi: 10.11862/CJIC.2022.267 shu

Preparation and supercapacitive properties of B, N co⁃doped porous carbons

School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China

Corresponding author: Hong-Qiang LI, hqli2020@ahut.edu.cn Xiao-Jun HE, xjhe@ahut.edu.cn
Received Date: 20 September 2022
Revised Date: 5 November 2022

Figures(8)

Herein, we employed (CH₃COO)₂Zn as template to prepare B, N co - doped porous carbons (BN - PC) by using phenanthroline as precursor and N source, K₂B₄O₇ as B source. The effect of template mass on the structure and electric storage properties of BN-PC₅ was investigated. When the mass of (CH₃COO)₂Zn was 5 g, the B and N heteroatom content of BN - PC ₅ was 20.21% and 18.29%, respectively. As the electrode materials for supercapaci-tors, BN-PC₅ exhibited a high specific capacitance of 255 F·g^-1 at 0.05 A·g^-1, an excellent rate performance of 188 A·g^-1 at 20 A·g^-1 and outstanding cycle stability with 97% of initial capacitance retention after 10 000 cycles in 6 mol·L^-1 KOH aqueous electrolyte. The energy density of BN-PC₅ capacitor reached 27 Wh·kg^-1 at an average power density of 56 W·kg^-1 in 3 mol·L^-1 ZnSO₄ aqueous electrolyte.
- energy density,
- co-doped,
- porous carbon,
- electrochemistry,
- supercapacitors
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