Fe<sup>3+</sup>掺杂活化木质素基木材陶瓷的制备及电化学性能

doi:10.11896/cldb.18100183

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Abstract Activated woodceramics for electrode materials have been prepared from the carbonized materials of lignin extracted from black liquor with FeC₆H₅O₇ as catalyst at 1 200 ℃ for 2 h and with KOH as activation agent at 800 ℃ for 1.5 hours. The phase composition, specific surface area, pore structure and electrochemical properties of as-prepared woodceramics were performed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption (BET), constant current charge and discharge, and cyclic voltammetry respectively. The results show that when the ratio of ferric citrate to lignin is 1∶1, the activated lignin-based woodceramics have good graphitization characteristics, and its specific surface area can reach 712.59 m²/g, and the pore size is mainly distributed at 1.64 nm. The specific electrode capacitance of the electrode materials prepared in the inorganic system (6 mol/L KOH) can reach 115.6 F/g. After 2 500 cycles of charge and discharge, the specific capacitance retention rate reaches 75.2%, exhibiting good electrochemical performance and having the potential as an electrode material for an ideal electrochemical capacitor.

Key words： lignin of black liquid Fe³⁺ doped activated woodceramics electrochemical performance

Published: 29 August 2019

CLC number:

TB332

About author:: Xiaoqin Jireceived her B.S. degree (2017) from Zhejiang Agriculture and Forestry University. Now she is pursuing her M.S study at College of Materials Science and Engineering at Central South University of Forestry and Technology. Her current research focuses on materials about lignin based porous carbon mate-rials.Delin Sun, professor, Ph.D. doctoral tutor. He presided over 2 projects of the National Natural Science Foundation of China, and presided over and participated in many provincial and ministerial projects. He mainly engaged in the teaching and research of biomass porous carbon materials, wood composite materials, wood products design and processing.

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	JI Xiaoqin
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	YU Xianchun
	HAO Xiaofeng
	CHEN Xinyi
	ZHU Zhihong

Cite this article:

JI Xiaoqin,SUN Delin,YU Xianchun, et al. Preparation and Electrochemical Performance of Fe³⁺-Doped Activated Lignin Basic Woodceramics[J]. Materials Reports, 2019, 33(20): 3390-3395.

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http://www.mater-rep.com/EN/10.11896/cldb.18100183 OR http://www.mater-rep.com/EN/Y2019/V33/I20/3390

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