Hits:

Indexed by:期刊论文

Date of Publication:2018-11-01

Journal:MATERIALS LETTERS

Included Journals:SCIE、Scopus

Volume:230

Page Number:183-186

ISSN No.:0167-577X

Key Words:Crab shell; In-situ template; Carbon materials; Mesoporous biochar; Energy storage and conversion

Abstract:A novel synthetic strategy was successfully developed to fabricate mesoporous biochar with high-surface area from crab shell as carbon precursor and its natural CaCO3 as in situ template. The influences of pyrolysis temperature on the pore structure were investigated via N-2 adsorption-desorption isotherms and scanning/transmission electron microscope. The as-prepared biochar at pyrolysis temperature of 900 degrees C possessed high surface area of 634 m(2)/g and large mesopore percentage of 70.80%. The maximum specific capacitance of biochar electrode reached 220 F/g. The excellent supercapacitor performance of this supercapacitor was strongly attributed to the thermal decomposition of CaCO3, producing high surface area and mesoporous structure for raw biochar. (C) 2018 Elsevier B.V. All rights reserved.