水热炭化-KOH活化制备核桃壳活性炭电极材料的研究

doi:10.11896/j.issn.1005-023X.2018.07.007

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Abstract Activated carbons applied as electrode materials for supercapacitors were prepared from walnut shell via hydrothermal carbonization and KOH activation. The microstructure and surface chemical property of activated carbons were characterized by low temperature N₂adsorption, scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The electroche-mical performances of activated carbon electrode materials were also investigated by galvanostatic charge/discharge and cyclic voltammetry in 3 mol/L KOH aqueous electrolyte. The results show that walnut shell activated carbon with a specific surface of 1 236 m²/g, total pore volume of 0.804 cm³/g, mesopore percentage of 38.3% was obtained at KOH/hydrothermal carbon ratio of 3, activation temperature of 800 ℃ and activation time of 1 h. The walnut shell activated carbon applied as electrode materials for supercapacitor exhibited an excellent electrochemical performance and superior cycling performance in KOH aqueous electrolyte. The gravimetric specific capacitance was as high as 251 F/g at a current density of 50 mA/g and still remained 205 F/g even at a current density of 5 000 mA/g, and 92.4% of the initial specific capacitance was retained after 1 000 cycles. The superior electrochemical performance of walnut shell activated carbons were strongly related to their interconnected hierarchical pore structure and unique oxygen-enriched surface.

Key words： walnut shell hydrothermal carbonization activated carbon electrode material electrochemical performance

Published: 10 April 2018 Online: 2018-05-11

CLC number:

TQ424.1

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	Articles by authors
	ZHANG Chuantao
	XING Baolin
	HUANG Guangxu
	ZHANG Shuangjie
	ZHANG Chuanxiang
	SHI Changliang
	ZHU Ahui
	YAO Youheng
	ZHANG Qingshan

Cite this article:

ZHANG Chuantao,XING Baolin,HUANG Guangxu, et al. Preparation of Walnut Shell Activated Carbons via Combination of Hydrothermal Carbonization and KOH Activation[J]. Materials Reports, 2018, 32(7): 1088-1093.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.07.007 OR https://www.mater-rep.com/EN/Y2018/V32/I7/1088

1 Frackowiak E, Abbas Q, Béguin F. Carbon/carbon supercapacitors[J].Journal of Energy Chemistry,2013,22(2):226
2 Xing B L, Huang G X, Chen L J, et al. Current situation and prospect of research on electrode materials for supercapacitor[J].Mate-rials Review A:Review Papers,2012,26(10):21(in Chinese).
邢宝林,黄光许,谌伦建,等.超级电容器电极材料的研究现状与展望[J].材料导报:综述篇,2012,26(10):21.
3 Lan D, Chen Y, Chen P, et al. Mesoporous CoO nanocubes @ continuous 3D porous carbon skeleton of rose-based electrode for high-performance supercapacitor[J].Applied Materials & Interfaces,2014,6(15):11839.
4 Xing B L, Guo H, Chen L J, et al. Lignite-derived high surface area mesoporous activated carbons for electrochemical capacitors[J].Fuel Processing Technology,2015,138:734.
5 Redondo E, Carretero-González J, Goikolea E, et al. Effect of pore texture on performance of activated carbon supercapacitor electrodes derived from olive pits[J].Electrochimica Acta,2015,160:178.
6 Jiang L, Yan J, Hao L, et al. High rate performance activated carbons prepared from ginkgo shells for electrochemical supercapacitors[J].Carbon,2013,56:146.
7 Fan Y, Yang X, Zhu B, et al. Micro-mesoporous carbon spheres derived from carrageenan as electrode material for supercapacitors[J].Journal of Power Sources,2014,268:584.
8 Nowicki P, Wachowska H, Pietrzak R. Active carbons prepared by chemical activation of plum stones and their application in removal of NO₂[J].Journal of Hazardous Materials,2010,181(1):1088.
9 Xie R, Wang H, Chen Y, et al. Walnut shell-based activated carbon with excellent copper (Ⅱ) adsorption and lower chromium (Ⅵ) removal prepared by acid-base modification[J].Environmental Progress & Sustainable Energy,2013,32(3):688.
10Guo H, Zhang J S, Zhu T X, et al. Preparation of high specific surface area activated carbon electrode materials from walnut shell[J].Materials Review B:Research Papers,2016,30(1):24(in Chinese).
郭晖,张记升,朱天星,等.利用核桃壳制备高比表面积活性炭电极材料的研究[J].材料导报:研究篇,2016,30(1):24.
11Wang L Z, Wen H L, Sun S M, et al. The preparation of mesoporous activated carbon by microwave radiation heating walnut shell[J].Functional Materials,2014,45(18):18144(in Chinese).
王力臻,闻红丽,孙淑敏,等.以核桃壳为碳源微波加热制备介孔活性炭[J].功能材料,2014,45(18):18144.
12Yang J, Qiu K. Preparation of activated carbons from walnut shells via vacuum chemical activation and their application for methylene blue removal[J].Chemical Engineering Journal,2010,165(1):209.
13 Wu Q F, Zhang F S. Progress on hydrothermal carbonization of waste biomass[J].Environ Pollut Control,2012,34(7):70(in Chinese).
吴倩芳,张付申.水热炭化废弃生物质的研究进展[J].环境污染与防治,2012,34(7):70.
14 Huang W, Fan T X. Research progress of hydrothermal carbonization method[J].Materials Review A: Review Papers,2014,28(12):131 (in Chinese).
黄维,范同祥.水热碳化法的研究进展[J].材料导报:综述篇,2014,28(12):131.
15 Jain A, Balasubramanian R, Srinivasan M P. Hydrothermal conversion of biomass waste to activated carbon with high porosity:A review[J].Chemical Engineering Journal,2016,283:789.
16 Xing B L, Chen L J, Zhang C X, et al. Activation mechanism of lignite-based activated carbon prepared by KOH activation[J].Journal of China University of Mining & Tecnology,2014,43(6):1038(in Chinese).
邢宝林,谌伦建,张传祥,等.KOH活化法制备褐煤基活性炭的活化机理研究[J].中国矿业大学学报,2014,43(6):1038.
17 Yu H, Cho S, Jung M, et al. Electrochemical and structural characteristics of activated carbon-based electrodes modified via phosphoric acid[J].Microporous and Mesoporous Materials,2013,172:131.
18 Du X, Wang C Y, Shi Z Q, et al. Effects of oxygen functional groups on the electrochemical performance of activated carbon[J].Journal of Tianjin University,2006,39(12):1479(in Chinese).
杜嬛,王成扬,时志强,等.表面含氧官能团对活性炭电化学性能的影响[J].天津大学学报,2006,39(12):1479.
19 Inagaki M, Konno H, Tanaike O. Carbon materials for electroche-mical capacitors[J].Journal of Power Sources,2010,195(24):7880.
20Zhang D S, Deng C J, Xia X H, et al. Influence of pore structure on the electrochemical performance of high specific surface area bamboo char-based activated carbon[J].Chemistry and Industry of Forest Products,2010,30(5):25(in Chinese).
张东升,邓丛静,夏笑虹,等.高比表面积竹炭基活性炭的孔结构对电容性能的影响[J].林产化学与工业,2010,30(5):25.
21Zhu Y J, Dai F, Wang J J, et al. High specific surface area carbon/carbon electrochemical capacitor in aqueous Na₂SO₄ electrolyte[J].New Chemical Materials,2016,44(11):143(in Chinese).
朱杨军,代芳,王姣姣,等.高比表面积活性炭基水系Na₂SO₄电化学电容器的制备[J].化工新型材料,2016,44(11):143.
22Cai T, Zhou M, Ren D, et al. Highly ordered mesoporous phenol-formaldehyde carbon as supercapacitor electrode material[J].Journal of Power Sources,2013,231:197.