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.pdfVIP

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 洪孝挺 1 * 吴小辉 1 莫名月 1 LUO Zhi-Ping2 HUI Kwan San3 * 陈红雨 1 李来胜 1 HUI Kwun Nam4 张秋云 1 (1华南师范大学化学与环境学院,环境理论化学省部共建教育部重点实验室,广州 510006; 2Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA; 3Department of Systems Engineering and Engineering Management, City University of Hong Kong, Hong Kong, P. R. China; 4Department of Materials Science and Engineering, Pusan National University, Republic of Korea) 摘要: 电化学电容器 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 mo·L 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 )和大的孔容(1.32 cm3·g ),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 °C时,孔径分布图 出现了三个峰.正是由于这些特殊的结构特征,由 900 °C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: 棒状中孔; 层次孔炭; 羟基磷灰石; 电化学电容性能; 模板 中图分类号: O646 Synthesis and Electrochemical Capacitive Performances of Novel Hierarchically Micro-Meso-Structured Porous Carbons Fabricated Using Microporous Rod-Like Hydroxyapatites as a Template HONG Xiao-Ting1, WU Xiao-Hui1 MO Ming-Yue1 LUO Zhi-Ping2 HUI Kwan San3, CHEN Hong-Yu1 LI Lai-Sheng1 HUI Kwun Nam4 ZHANG Qiu-Yun1 (1Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China; 2Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA; 3Department of Systems Engineering and Engineering Management, City University of Hong Kong, Hong Kong, P. R. China; 4Department of Materials Science and Engineering, Pusan National University, Republic of Korea) Abstract: E ectrochem ca capac tors (ECs) are attract ve energy storage systems for app cat ons w th h gh power requ rements. Porous carbons are the mater a s that are most frequent y used for the e ectrodes n ECs, because of the r