{"title":"使用再生土工聚合物膜和 MnO2/CNTs 电极的可再生双功能结构超级电容器","authors":"","doi":"10.1016/j.est.2024.114203","DOIUrl":null,"url":null,"abstract":"<div><div>A bifunctional supercapacitor based on the recycled montmorillonite geopolymer membrane and MnO<sub>2</sub>/CNTs composite electrodes was designed and assembled. The recycled geopolymer was prepared from recycled montmorillonite geopolymer powder and alkali activators and used as a solid electrolyte skeleton, with a maximum compressive strength of 30.6 MPa after 28 days of curing, which is comparable to the strength of the initially polymerized geopolymer. The MnO<sub>2</sub>/CNTs electrodes were prepared by electrodeposition method, and the electrode materials containing 2 wt% CTAB and 1 wt% CNTs had the best area specific capacity of 3310 mF cm<sup>−2</sup> at a current density of 1 mA cm<sup>−2</sup>. The regenerated geopolymer electrolyte framework was injected with 0.5 M Na<sub>2</sub>SO<sub>4</sub> and assembled with MnO<sub>2</sub>/CNTs electrode to form a structural load-bearing supercapacitor, which had a specific capacity of 2094.4 mF cm<sup>−2</sup> at a load of 15 MPa, with a capacity retention rate of 65.43 % after 10,000 charge/discharge cycles.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":null,"pages":null},"PeriodicalIF":8.9000,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A renewable bifunctional structural supercapacitor using the recycled geopolymer membrane and MnO2/CNTs electrode\",\"authors\":\"\",\"doi\":\"10.1016/j.est.2024.114203\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A bifunctional supercapacitor based on the recycled montmorillonite geopolymer membrane and MnO<sub>2</sub>/CNTs composite electrodes was designed and assembled. The recycled geopolymer was prepared from recycled montmorillonite geopolymer powder and alkali activators and used as a solid electrolyte skeleton, with a maximum compressive strength of 30.6 MPa after 28 days of curing, which is comparable to the strength of the initially polymerized geopolymer. The MnO<sub>2</sub>/CNTs electrodes were prepared by electrodeposition method, and the electrode materials containing 2 wt% CTAB and 1 wt% CNTs had the best area specific capacity of 3310 mF cm<sup>−2</sup> at a current density of 1 mA cm<sup>−2</sup>. The regenerated geopolymer electrolyte framework was injected with 0.5 M Na<sub>2</sub>SO<sub>4</sub> and assembled with MnO<sub>2</sub>/CNTs electrode to form a structural load-bearing supercapacitor, which had a specific capacity of 2094.4 mF cm<sup>−2</sup> at a load of 15 MPa, with a capacity retention rate of 65.43 % after 10,000 charge/discharge cycles.</div></div>\",\"PeriodicalId\":15942,\"journal\":{\"name\":\"Journal of energy storage\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2024-10-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of energy storage\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352152X24037897\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24037897","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
A renewable bifunctional structural supercapacitor using the recycled geopolymer membrane and MnO2/CNTs electrode
A bifunctional supercapacitor based on the recycled montmorillonite geopolymer membrane and MnO2/CNTs composite electrodes was designed and assembled. The recycled geopolymer was prepared from recycled montmorillonite geopolymer powder and alkali activators and used as a solid electrolyte skeleton, with a maximum compressive strength of 30.6 MPa after 28 days of curing, which is comparable to the strength of the initially polymerized geopolymer. The MnO2/CNTs electrodes were prepared by electrodeposition method, and the electrode materials containing 2 wt% CTAB and 1 wt% CNTs had the best area specific capacity of 3310 mF cm−2 at a current density of 1 mA cm−2. The regenerated geopolymer electrolyte framework was injected with 0.5 M Na2SO4 and assembled with MnO2/CNTs electrode to form a structural load-bearing supercapacitor, which had a specific capacity of 2094.4 mF cm−2 at a load of 15 MPa, with a capacity retention rate of 65.43 % after 10,000 charge/discharge cycles.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.