期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 538, 期 -, 页码 308-319出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.11.103
关键词
Baobab fruit shell; Biomass; Porous carbon; All-solid-state supercapacitor
资金
- self-determined research funds of CCNU from the colleges' basic research and operation of MOE [CCNU17TS007]
- Key Laboratory of Analytical Chemistry for Biology and Medicine of MOE [ACBM2016003]
- Key Scientific Project of Wuhan City [2013011801010598]
- Henan science and Technology Cooperation Project [172106000064]
- National Natural Science Foundation of China [50802032, 11275082]
Due to an effective synthesis strategy, two kinds of hierarchical porous activated carbons were derived via KOH and H3PO4 activation and carbonization processes from baobab fruit shells (BFSs) used as a green and low-cost biomass precursor. The physicochemical properties and the morphological structure of the baobab fruit shell derived carbons (BFSCs) were systematically studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra, nitrogen adsorption/desorption isotherms and X-ray photoelectron spectroscopy (XPS) techniques. The biomass-derived activated carbons, BFSC1 (using KOH activation), and BFSC2 (using H3PO4 activation), obtained exhibit high specific capacitances of 233.48 F g(-1) and 355.8 F g(-1) at a current density of 1 A g(-1), respectively, due to their different surface structures and high specific surface areas. Furthermore, the as-assembled, flexible all-solid-state super capacitor devices based on the BFSC electrodes exhibit a high specific capacitance of 58.67 F g(-1) at 1 A g(-1) and a high energy density of 20.86 Wh kg(-1), at a power density of 400 W kg(-1). This facile route highlights the exciting possibility of utilizing waste baobab fruit shells to produce low-cost, green and high-performance carbon-based electrode materials for sustainable electrochemical energy storage systems. (C) 2018 Published by Elsevier Inc.
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