红薯淀粉凝胶衍生多孔碳的制备及其在染料敏化太阳能电池对电极中的研究  

Preparation of Gel-Derived Porous Carbon from Sweet Potato Starch and Its Study in Counter Electrode of Dye-Sensitized Solar Cell

作　　者：岳思源 赵一倩 周华伟[1] YUE Siyuan;ZHAO Yiqian;ZHOU Huawei(School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China)

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2024年第6期56-61,共6页Journal of Liaocheng University:Natural Science Edition

基　　金：国家大学生创新计划项目(202110447064);山东省大学生创新计划项目(S202110447066);聊城大学大学生创新计划项目(CXCY2022032,CXCY2022030,CXCY2021039,CXCY2021090)资助。

摘　　要：生物质碳具有来源丰富,价格低廉,用途广泛等优点。以红薯淀粉为原料,通过碱诱导凝胶化-冷冻干燥-碳化法,制备出具有多孔结构的生物质衍生碳材料。在该方法中KOH既可以促形成凝胶,又可以作为模板剂起到占位作用形成多孔碳,实验结果显示红薯淀粉凝胶衍生多孔碳(Sweet potato starch gel derived porous carbon,SPSG-PC)的孔隙大小为1~2μm。将其作为染料敏化太阳能电池(DSCs)对电极,并组装成器件。光电化学测试表明,SPSG-PC对电极组装的器件的各项光伏参数与Pt-DSCs接近。电化学机理研究表明,SPSG-PC对碘还原反应表现出较好的催化活性。SPSG-PC具有取材丰富、成本较低、低污染等优势,符合绿色可持续发展理念,在DSCs对电极材料方面具有应用潜力。Biomass carbon has the advantages of abundant source,low price and wide application.Herein,sweet potato starch was used as raw material to prepare biomass-derived carbon materials with porous structure by alkali-induced gelation-freeze-drying-carbonization method.In this method,KOH not only promotes the formation of gels,but also plays a space-occupying role as a template agent to form porous carbon.The experimental results show that the pore size of sweet potato starch gel derived porous carbon(SPSG-PC)is in the range of 1~2μm,which was used as dye-sensitized solar cell(DSCs)counter electrodes and assembled into devices.The photoelectrochemical characterization tests shows that the photovoltaic parameters of the SPSG-PC counter electrode assembled devices are close to Pt-DSCs.Electrochemical mechanism studies show that SPSG-PC has good catalytic activity for iodine reduction reaction.SPSG-PC has the advantages of abundant materials,low cost and weak pollution,which is in line with the concept of green and sustainable development,and shows potential application in DSCS counter electrode materials.

关 键 词：红薯淀粉凝胶 生物质衍生碳材料 对电极 染料敏化太阳能电池 

分 类 号：TM914.4[电气工程—电力电子与电力传动]