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JOURNAL OF SYNTHETIC CRYSTALS ›› 2022, Vol. 51 ›› Issue (8): 1413-1421.

• Research Articles • Previous Articles     Next Articles

Preparation of Phosphorus-Doped Mesoporous Carbon and Its Electrochemical Property

LIU Huan1, XIE Yulong1, ZHAO Suqin2   

  1. 1. Qinghai Provincial Key Laboratory of Applied Physical Chemistry, Key Laboratory of Qinghai-Tibet Plateau Resource Chemistry and Ecological Environment Protection, National Ethnic Affairs Commission, College of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining 810007, China;
    2. College of Physical and Electronic Information Engineering, Qinghai Minzu University, Xining 810007, China
  • Received:2022-05-02 Online:2022-08-15 Published:2022-09-08

Abstract: Phosphorus-doped mesoporous carbons (PMCs) were synthesized by solvent evaporation-induced self-assembly (EISA) method using phenolic resin as carbon precursor, phosphoric acid as phosphorus source, and the triblock copolymer F127 as soft template. The morphology and structure of the prepared PMCs were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of samples were tested by electrochemical workstation. The results show that phosphorus mainly exists in the form of C—P bond and P—O bond in mesoporous carbon. Electrochemical tests show that the maximum specific capacitance can be obtained by adjusting the amount of phosphorus doping. When the current density is 0.5 A/g, the specific capacity of mesoporous carbon is 140 F/g, while the optimized mesoporous carbon reaches 176 F/g.

Key words: phosphorus-doped mesoporous carbon, solvent evaporation-induced self-assembly method, phenolic resin, mesoporous structure, electrochemical property, specific capacitance

CLC Number: