Eco-friendly next-generation energy storage devices with high energy density are required to meet the increasing demand for sustainable and green electronics.However,their manufacturing requires a lot of chemical prec...Eco-friendly next-generation energy storage devices with high energy density are required to meet the increasing demand for sustainable and green electronics.However,their manufacturing requires a lot of chemical precursors and is usually accompanied by chemical waste;it also involves laborious and time-consuming processes such as mixing,heat treating,casting,and drying.Here,we proposed that mass production of microsupercapacitors(MSCs)for green electronics can be achieved by embedding manganese monoxide(MnO)on wood-derived laser-induced-graphene(LIG)via femtosecond laser direct writing(FsLDW)technique.The direct synthesis of MnO/LIG hetero-nanostructures on wood was realized by drop-casting a small amount of precursor between the first and second FsLDW.The preceding FsLDW thermochemically converted wood into LIG while the following FsLDW converted the precursor into MnO,resulting in MnO/LIG hetero-nanostructures.As-fabricated MnO/LIG MSC exhibited enhanced areal capacitance(35.54 mF cm^(−2)at 10 mV s^(−1))and capacitance retention(approximately 82.31%after 10,000 cycles)with only a small inclusion of Mn sources(0.66 mg cm^(−2))and short production time(10 min cm^(−2)),which attributes to operate light-emitting diodes,digital clocks,and electronic paper as well.This approach enables the green,facile,fast,and cost-effective fabrication of future sustainable energy storage devices from biomass for next-generation green electronics.展开更多
基金supported by the National Research Foundation of the Republic of Korea(Project.No.2020R1A2C210233813,2021R1A4A1031660)Korea Forestry Promotion Institute(Project No.2023488B10-2325-AA01)+2 种基金the R&D Program for Forest Science Technology(Project No.2020229C10-2122-AC01)Korea Forest Service,Korea Institute of Planning and Evaluation for Technology in Food,Agriculture,and Forestry funded by Ministry of Agriculture,Food and Rural Affairs(321077-2),and KAIST G-core projectthe National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.RS-2023-00217581).
文摘Eco-friendly next-generation energy storage devices with high energy density are required to meet the increasing demand for sustainable and green electronics.However,their manufacturing requires a lot of chemical precursors and is usually accompanied by chemical waste;it also involves laborious and time-consuming processes such as mixing,heat treating,casting,and drying.Here,we proposed that mass production of microsupercapacitors(MSCs)for green electronics can be achieved by embedding manganese monoxide(MnO)on wood-derived laser-induced-graphene(LIG)via femtosecond laser direct writing(FsLDW)technique.The direct synthesis of MnO/LIG hetero-nanostructures on wood was realized by drop-casting a small amount of precursor between the first and second FsLDW.The preceding FsLDW thermochemically converted wood into LIG while the following FsLDW converted the precursor into MnO,resulting in MnO/LIG hetero-nanostructures.As-fabricated MnO/LIG MSC exhibited enhanced areal capacitance(35.54 mF cm^(−2)at 10 mV s^(−1))and capacitance retention(approximately 82.31%after 10,000 cycles)with only a small inclusion of Mn sources(0.66 mg cm^(−2))and short production time(10 min cm^(−2)),which attributes to operate light-emitting diodes,digital clocks,and electronic paper as well.This approach enables the green,facile,fast,and cost-effective fabrication of future sustainable energy storage devices from biomass for next-generation green electronics.
