Ethanol extraction pretreatment to improve the performance of banana pseudostem-derived porous carbon as supercapacitor electrodesOA
Bananas are among the most produced and popular fruits globally,and their harvest generates significant amounts of banana pseudostem(BP).This study proposes a process that involves first extracting tannic acid from BP with ethanol and then converting the extraction residue RBP(recycled banana pseudostem)into biochar for electrode material for supercapacitors(SCs),thereby maximizing the resource utilization of BP.BP and RBP biochars were prepared by pyrolysis at temperatures ranging from 600℃ to 800℃.Comparison of pretreated and un-pretreated samples showed that the micropore specific surface area of RBP700(2066.35 m^(2)·g^(-1))nearly doubled that of BP700(1057.10 m^(2)·g^(-1)),and the micropore volume increased from 0.49 cm^(3)·g^(-1) to 0.84 cm^(3)·g^(-1).RBP700 electrode exhibited a specific capacitance of 298.2 F·g^(-1) at a current density of 0.5 A·g^(-1),with a capacitance retention rate of 78.4%at 20 A·g^(-1),and retained 92.6% of its initial capacitance after 10,000 cycles,demonstrating excellent electrochemical performance and high electrochemical stability.
Guozi Liu;Dachao Ma;Yaqi Zheng;Mengxue Ling;Wenfeng Ya;Liusen Wang;Hongchang Hu;Jinye Wei;Qisong Zhong;Zheng Liu;Dongbo Wang;Qingge Feng
School of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,China Key Laboratory of Environmental Protection(Guangxi University),Education Department of Guangxi Zhuang Autonomous Region,Nanning 530004,China Guangxi Key Laboratory of Emerging Contaminants Monitoring,Early Warning and Environmental Health Risk Assessment,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaScientific Research Academy of Guangxi Environmental Protection,Nanning 530020,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,China Key Laboratory of Environmental Protection(Guangxi University),Education Department of Guangxi Zhuang Autonomous Region,Nanning 530004,China Guangxi Key Laboratory of Emerging Contaminants Monitoring,Early Warning and Environmental Health Risk Assessment,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,China Key Laboratory of Environmental Protection(Guangxi University),Education Department of Guangxi Zhuang Autonomous Region,Nanning 530004,China Guangxi Key Laboratory of Emerging Contaminants Monitoring,Early Warning and Environmental Health Risk Assessment,Guangxi University,Nanning 530004,ChinaSchool of Resources,Environment and Materials,Guangxi University,Nanning 530004,China Key Laboratory of Environmental Protection(Guangxi University),Education Department of Guangxi Zhuang Autonomous Region,Nanning 530004,China Guangxi Key Laboratory of Emerging Contaminants Monitoring,Early Warning and Environmental Health Risk Assessment,Guangxi University,Nanning 530004,China
信息技术与安全科学
Banana pseudostemBiomass carbonExtraction residueSupercapacitor electrode
《Resources Chemicals and Materials》 2026 (1)
P.87-96,10
supported by the National Natural Science Foundation of China Regional Fund(No.52166011)Science and Technology Program of Chongzuo City(Chongke20220602)Guangxi Science and Technology Major Program(NO.AA23073018).
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