由微孔棒状羟基磷灰石为模板合成的新型层次孔炭材料的电化学电容性能

引用本文: 洪孝挺, 吴小辉, 莫名月, LUO Zhi-Ping, HUI Kwan San, 陈红雨, 李来胜, HUI Kwun Nam, 张秋云. 由微孔棒状羟基磷灰石为模板合成的新型层次孔炭材料的电化学电容性能[J]. 物理化学学报, 2013, 29(02): 298-304. doi: 10.3866/PKU.WHXB201211213 shu

Citation: HONG Xiao-Ting, WU Xiao-Hui, MO Ming-Yue, LUO Zhi-Ping, HUI Kwan San, CHEN Hong-Yu, LI Lai-sheng, HUI Kwun Nam, ZHANG Qiu-Yun. Synthesis and Electrochemical Capacitive Performances of Novel Hierarchically Micro-Meso-Structured Porous Carbons Fabricated Using Microporous Rod-Like Hydroxyapatites as a Template[J]. Acta Physico-Chimica Sinica, 2013, 29(02): 298-304. doi: 10.3866/PKU.WHXB201211213 shu

由微孔棒状羟基磷灰石为模板合成的新型层次孔炭材料的电化学电容性能

基金项目:
国家自然科学基金(21203067) (21203067)

广东高校优秀青年创新人才培养计划项目(LYM11052) (LYM11052)

香港创新及科技基金(ITS/244/11)资助项目 (ITS/244/11)

摘要:

电化学电容器已经成为极具潜力的可满足高功率需求的储能系统器件. 多孔炭具有大比表面积、高导电性、化学惰性、廉价及可调孔结构等优势, 因此成为电化学电容器最为常用的电极材料. 本文报道由微孔棒状羟基磷灰石为模板及蔗糖为碳源合成的新型具有层次孔道结构的孔炭材料的电化学电容器的性能. 采用X射线衍射分析仪、扫描电子显微镜、透射电子显微镜、X射线光电子能谱及BET表面分析仪表征了合成的多孔炭的形貌及表面特性. 采用循环伏安法、交流阻抗图谱分析及恒流充放电评价多孔炭材料在1 mol·L^-1硫酸中的电化学电容性能. 多孔炭具有高的比表面积(719.7 m²·g^-1)和大的孔容(1.32 cm³·g^-1), 其无序的孔道由任意分布的微孔、坍塌的中孔及类模板形状的相互交织的棒状中孔组成. 随着炭化温度的增加, 微孔及棒状中孔的密度随之降低, 在炭化温度高达900℃时, 孔径分布图上出现了三个峰. 正是由于这些特殊的结构特征, 由900℃炭化得到的多孔炭制成的电极展示出很好的电化学电容性能.

关键词:

English

Synthesis and Electrochemical Capacitive Performances of Novel Hierarchically Micro-Meso-Structured Porous Carbons Fabricated Using Microporous Rod-Like Hydroxyapatites as a Template

1.
1 School of Chemistry and Environment, South China Normal University; Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, P. R. China;
2 Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA;
3 Department of Systems Engineering and Engineering Management, City University of Hong Kong, Hong Kong, P. R. China;
4 Department of Materials Science and Engineering, Pusan National University, Republic of Korea
Received Date: 25 September 2012
Available Online: 14 January 2013
Fund Project:
国家自然科学基金(21203067)

广东高校优秀青年创新人才培养计划项目(LYM11052)

香港创新及科技基金(ITS/244/11)资助项目

Abstract:

Electrochemical capacitors (ECs) are attractive energy storage systems for applications with high power requirements. Porous carbons are the materials that are most frequently used for the electrodes in ECs, because of their large surface area, high conductivity, chemical inertness, low cost, and tunable pore structure. Here, novel hierarchically micro-meso-structured porous carbons were synthesized, using microporous rod-like hydroxyapatite nanoparticles as a template and sucrose as a carbon source. The morphology and surface properties of the as-prepared porous carbons were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller surface analysis. The electrochemical capacitive performances were evaluated in an aqueous solution of 1 mol·L^-1 H₂SO₄ using cyclic voltammetry, electrochemical impedance spectroscopy, and constant current charge/discharge tests. The resultant carbons showed a high surface area of more than 719.7 m²·g^-1, large pore volumes of more than 1.32 cm³·g^-1, and a disordered pore structure composed of randomly distributed micropores, collapsed mesopores, and interweaving rod-like mesopores that took the shape of the template. As the carbonization temperature was increased, the density of micropores and rod-like mesopores decreased, and a tri-modal pore size distribution appeared for the carbon sample carbonized at 900 ° C. Because of these unique characteristics, the electrode material originated from the porous carbon carbonized at 900℃ exhibited od electrochemical capacitive performances.

Key words:

Rod-like mesopore
/ Micro-meso porous carbon
/ Hydroxyapatite
/ Electrochemical capacitive performance
/ Template

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

由微孔棒状羟基磷灰石为模板合成的新型层次孔炭材料的电化学电容性能

English

Synthesis and Electrochemical Capacitive Performances of Novel Hierarchically Micro-Meso-Structured Porous Carbons Fabricated Using Microporous Rod-Like Hydroxyapatites as a Template

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

由微孔棒状羟基磷灰石为模板合成的新型层次孔炭材料的电化学电容性能

English

Synthesis and Electrochemical Capacitive Performances of Novel Hierarchically Micro-Meso-Structured Porous Carbons Fabricated Using Microporous Rod-Like Hydroxyapatites as a Template

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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