中南民族大学学报（自然科学版）2026，Vol.45Issue(6)：754-762,9.DOI:10.20056/j.cnki.ZNMDZK.20260604
超支化聚合物模板法改性碳纳米管薄膜原位构筑多孔NiCo2Se4柔性非对称超级电容器
Hierarchical porous NiCo2Se4 grown on carbon nanotube film via a hyperbranched polymer template for flexible asymmetric supercapacitors
摘要
Abstract
Lightweight carbon nanotubes(CNTs)have garnered significant interest in the realm of flexible electronics;however,achieving both high capacitance and high energy density simultaneously remains a formidable challenge.The application of epoxy-terminated hyperbranched polymer(EHP)is presented as a reactive template for the in-situ synthesis of porous NiCo2Se4 on a pristine CNT film.The as-prepared porous NiCo2Se4 exhibits a core-shell nanostructure and demonstrates a larger surface area and superior electrochemical properties compared to NiCo2Se4 synthesized without the CNT film.When employed as an electrode material,the CNT@NiCo2Se4 film achieves a high specific volume capacitance of 281.7 F‧cm-3.The flexible symmetric supercapacitor(SC)fabricated from the CNT@NiCo2Se4 film exhibits a high specific volume capacitance(23.3 F‧cm-3),retains 95.6%capacitance retention after 5000 charge-discharge cycles,displays excellent bending resilience,and achieves a high energy density(3.2 mWh‧cm-3).Moreover,the device sustains stable performance across diverse bending conditions,underscoring its promise for flexible and wearable electronic applications.Within this system,the CNT film functions as a flexible,conductive current collector,while the porous NiCo2Se4 provides ample electroactive sites,collectively facilitating outstanding electrochemical performance.The reaction mechanism underlying the use of epoxy-terminated hyperbranched polymer as a reactive template in the preparation of porous NiCo₂Se₄ was elucidated through FT-IR,XRD,and TG analyses.The findings reveal that the EHP-templated approach effectively facilitates the formation of a porous NiCo2Se4 nanonetworks on CNT films,which improves electrical conductivity,creates abundant active sites,and improves ion/electron transport.Consequently,this strategy significantly enhances the overall electrochemical performance and energy-storage capability of the assembled flexible asymmetric supercapacitor.关键词
超支化聚合物/碳纳米管薄膜/柔性非对称超级电容器/模板法/NiCo2Se4纳米网络Key words
hyperbranched polymers/carbon nanotubes film/flexible asymmetric supercapacitor/template method/NiCo2Se4 nanonetwork分类
化学化工引用本文复制引用
向晓君,胡燕茹,张道洪,王秋凡..超支化聚合物模板法改性碳纳米管薄膜原位构筑多孔NiCo2Se4柔性非对称超级电容器[J].中南民族大学学报（自然科学版）,2026,45(6):754-762,9.基金项目
湖北省自然科学基金联合基金资助项目(2024AFD103) （2024AFD103）
