Sujeong Gwak , Hyeonseo Joo , Bonhyeop Koo , Cheoljae Lee , Hyosik Park , Hochun Lee , Ju-Hyuck Lee
{"title":"PVDF-HFP+IL复合材料的离子扩散率和烷基链长度相关的摩擦电行为","authors":"Sujeong Gwak , Hyeonseo Joo , Bonhyeop Koo , Cheoljae Lee , Hyosik Park , Hochun Lee , Ju-Hyuck Lee","doi":"10.1016/j.nwnano.2025.100104","DOIUrl":null,"url":null,"abstract":"<div><div>As the global demand for renewable and clean energy solutions grows, triboelectric nanogenerators (TENGs) have emerged as a promising technology for harvesting mechanical energy. In this context, our study focuses on incorporating ionic liquids (ILs) into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to explore how the alkyl chain length of ILs influences triboelectric polarity. Imidazolium-based ILs containing bis(trifluoromethylsulfonyl)imide (TFSI⁻) anions were used, with cations such as 1-ethyl-3-methylimidazolium (EMIM⁺) and 1-butyl-3-methylimidazolium (BMIM⁺) exhibiting tribo-positive characteristics, while those with longer alkyl chains, including 1-methyl-3-n-octylimidazolium (OMIM⁺) and 1-dodecyl-3-methylimidazolium (DoMIM⁺), displayed tribo-negative behavior. These trends were correlated with self-diffusion coefficient measurements of the ILs. The control of triboelectric behavior and the formation of an electric double layer (EDL) through IL incorporation significantly enhanced the surface charge density, thereby improving the output performance of TENGs. This work provides a novel strategy for enhancing TENG efficiency and offers material selection guidelines for sustainable energy applications.</div></div>","PeriodicalId":100942,"journal":{"name":"Nano Trends","volume":"10 ","pages":"Article 100104"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ion diffusivity and alkyl chain length-dependent triboelectric behavior of PVDF-HFP+IL composites\",\"authors\":\"Sujeong Gwak , Hyeonseo Joo , Bonhyeop Koo , Cheoljae Lee , Hyosik Park , Hochun Lee , Ju-Hyuck Lee\",\"doi\":\"10.1016/j.nwnano.2025.100104\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>As the global demand for renewable and clean energy solutions grows, triboelectric nanogenerators (TENGs) have emerged as a promising technology for harvesting mechanical energy. In this context, our study focuses on incorporating ionic liquids (ILs) into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to explore how the alkyl chain length of ILs influences triboelectric polarity. Imidazolium-based ILs containing bis(trifluoromethylsulfonyl)imide (TFSI⁻) anions were used, with cations such as 1-ethyl-3-methylimidazolium (EMIM⁺) and 1-butyl-3-methylimidazolium (BMIM⁺) exhibiting tribo-positive characteristics, while those with longer alkyl chains, including 1-methyl-3-n-octylimidazolium (OMIM⁺) and 1-dodecyl-3-methylimidazolium (DoMIM⁺), displayed tribo-negative behavior. These trends were correlated with self-diffusion coefficient measurements of the ILs. The control of triboelectric behavior and the formation of an electric double layer (EDL) through IL incorporation significantly enhanced the surface charge density, thereby improving the output performance of TENGs. This work provides a novel strategy for enhancing TENG efficiency and offers material selection guidelines for sustainable energy applications.</div></div>\",\"PeriodicalId\":100942,\"journal\":{\"name\":\"Nano Trends\",\"volume\":\"10 \",\"pages\":\"Article 100104\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-03-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Trends\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2666978125000339\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Trends","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666978125000339","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Ion diffusivity and alkyl chain length-dependent triboelectric behavior of PVDF-HFP+IL composites
As the global demand for renewable and clean energy solutions grows, triboelectric nanogenerators (TENGs) have emerged as a promising technology for harvesting mechanical energy. In this context, our study focuses on incorporating ionic liquids (ILs) into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to explore how the alkyl chain length of ILs influences triboelectric polarity. Imidazolium-based ILs containing bis(trifluoromethylsulfonyl)imide (TFSI⁻) anions were used, with cations such as 1-ethyl-3-methylimidazolium (EMIM⁺) and 1-butyl-3-methylimidazolium (BMIM⁺) exhibiting tribo-positive characteristics, while those with longer alkyl chains, including 1-methyl-3-n-octylimidazolium (OMIM⁺) and 1-dodecyl-3-methylimidazolium (DoMIM⁺), displayed tribo-negative behavior. These trends were correlated with self-diffusion coefficient measurements of the ILs. The control of triboelectric behavior and the formation of an electric double layer (EDL) through IL incorporation significantly enhanced the surface charge density, thereby improving the output performance of TENGs. This work provides a novel strategy for enhancing TENG efficiency and offers material selection guidelines for sustainable energy applications.