CuO-g-C_(3)N_(4)/C复合材料的模板诱导合成及其电化学性能  

Template-induced synthesis of CuO-g-C_(3)N_(4)/C composite and its electrochemical property

作　　者：黄晨阳 刘成宝[1,2,3] 郑磊之 陈丰[1,2,3] 邱永斌 孟宪荣[5] 陈志刚[1,2,3] HUANG Chenyang;LIU Chengbao;ZHENG Leizhi;CHEN Feng;QIU Yongbin;MENG Xianrong;CHEN Zhigang(Jiangsu Key Laboratory for Environment Functional Materials,Suzhou University of Science and Technology,Suzhou 215009,China;School of Materials Science and Engineering,Suzhou University of Science and technology,Suzhou 215009,China;Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment,Suzhou University of Science and Technology,Suzhou 215009,China;Jiangsu Province Ceramics Research Institute Co.,Ltd.,Yixing 214221,China;Suzhou Institute of Environmental Science,Suzhou 215007,China)

机构地区：[1]苏州科技大学江苏省环境功能材料重点实验室,苏州215009 [2]苏州科技大学材料科学与工程学院,苏州215009 [3]苏州科技大学江苏水处理技术与材料协同创新中心,苏州215009 [4]江苏省陶瓷研究所有限公司,宜兴214221 [5]苏州市环境科学研究所,苏州215007

出　　处：《复合材料学报》2025年第3期1448-1458,共11页Acta Materiae Compositae Sinica

基　　金：江苏省自然科学基金(BK20180103,BK20180971);苏州市科技发展计划项目(民生科技-关键技术应用研究)(SS202036)。

摘　　要：多价铜基氧化物的理论比容量较高,但自身导电性和稳定性差;石墨相氮化碳(g-C_(3)N_(4))稳定性好、氮含量高、合成方法简单,但其电容性能不佳;生物质炭具有较大的比表面积、相对较好的导电性和刚性结构。为使各相优势得到充分发挥,并且尽量弥补其缺陷,本文以尿素为g-C_(3)N_(4)前驱体,杏鲍菇为模板诱导合成了具有疏松多孔结构的g-C_(3)N_(4)/C两相复合材料,后使用水热法将CuO均匀负载在g-C_(3)N_(4)/C表面及孔洞内得到CuO-g-C_(3)N_(4)/C三相复合材料。电化学测试结果表明,CuO-g-C_(3)N_(4)/C的最高比电容为262.8 F/g,2000次恒电流充放电循环后的电容保持率为97%,在不同电流密度下仍具有良好的充放电性能,CuO-g-C_(3)N_(4)/C的电容性能和稳定性能较好。这表明CuO和g-C_(3)N_(4)/C的三相复合不仅提高了CuO的导电性,而且使gC_(3)N_(4)的电容性能得到改善,从而使整体材料的储能性能、导电性和稳定性得到提升。The theoretical specific capacity of polyvalent copper-based oxides is considerable,but their conductivity and stability are inadequate.Graphite phase carbon nitride(g-C_(3)N_(4))exhibits good stability,high nitrogen content and simple synthesis method.However,its capacitance performance is poor.Biochar possesses a substantial specific surface area,relatively good electrical conductivity and rigid structure.To fully leverage the advantages of single phase and compensate for their respective shortcomings,a two-phase compound g-C_(3)N_(4)/C with porous structure was synthesized.Urea was served as the precursor of g-C_(3)N_(4),and Pleurotus eryngii was selected as the template.Subsequently,CuO was uniformly anchored on the surface and pores of g-C_(3)N_(4)/C through hydrothermal method,resulting in three-phase CuO-g-C_(3)N_(4)/C.Electrochemical testing reveals that the maximum specific capacitance of CuO-g-C_(3)N_(4)/C reaches 262.8 F/g,with a capacitance retention rate of 97%after 2000 constant current charge-discharge cycles.CuO-g-C_(3)N_(4)/C consistently exhibits excellent charge and discharge performance across different current densities,showcasing superior capacitance and stability of CuO-g-C_(3)N_(4)/C.This highlights that the combination of CuO and g-C_(3)N_(4)/C in a three-phase structure not only enhances the conductivity of CuO,but also enhances the capacitive performance of g-C_(3)N_(4),thereby improving the energy storage performance,electrical conductivity and stability of the overall material.

关 键 词：g-C_(3)N_(4) CUO 电化学 生物质炭 模板诱导 超级电容器 

分 类 号：TB333[一般工业技术—材料科学与工程] O646[理学—物理化学]