Fabrication of high B-doped ordered mesoporous carbon with 4-hydroxyphenylborate phenolic resin for supercapacitor
Yan Zhang1, Fengsong Qi1, Yujian Liu1
1Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology Mei Long Road 130 Shanghai 200237 PR China yzhang@ecust.edu.cn +86 21 64252659 +86 21 64252394.
Abstract:
The high B-doped ordered mesoporous carbon (HPB-OMC) was prepared by using 4-hydroxyphenylboronic acid-modified phenolic resin (HPBPF) as a boron and carbon precursor via the evaporation-induced self-assembly (EISA) approach. The chemical composite, mesoporous structure, and electrochemical properties of the as-prepared HPB-OMC are investigated. The results show that both highly boron-doped and well-ordered mesoporous structure are achieved for HPB-OMCs, owing to the improvement of solubility of the resins in ethanol, and the enhancement of thermal stability of pore channels during carbonization. Moreover, the HPB-OMCs exhibit an ideal electric double-layer capacitor performance. With the increase of the B-doped content, the specific capacitance of the HPB-OMC electrode rises gradually, then drops off a little. The HPB-OMC with a high B content (3.96 wt%) shows a much high specific capacitance of 183 F g-1 at a current density of 1 A g-1, suggesting its promising application in the field of supercapacitors.
