Atomically dispersed RuO2-tryptophan functionalized graphene quantum dot-graphene hybrid with double Schottky heterojunctions for high performance flexible supercapacitors

Manjakkal, 2020, A wearable supercapacitor based on conductive PEDOT:PSS-coated cloth and a sweat electrolyte, Adv. Mater., 32, 1907254, 10.1002/adma.201907254 Naskar, 2021, Chemical supercapacitors: A review focusing on metallic compounds and conducting polymers, J. Mater. Chem. A, 9, 1970, 10.1039/D0TA09655E Forouzandeh, 2020, Electrode materials for supercapacitors: A review of recent advances, Catalysts, 10, 969, 10.3390/catal10090969 Chen, 2019, Regulating voltage window and energy density of aqueous asymmetric supercapacitors by pinecone-like hollow Fe2O3/MnO2 nano-heterostructure, Adv. Mater. Interfaces, 7, 1901729, 10.1002/admi.201901729 Gurenko, 2020, Synthesis of NiO granular nanospheres as a novel material for high-performance supercapacitors, Mater. Lett., 279, 10.1016/j.matlet.2020.128478 Amiri, 2021, All-solid-state supercapacitors based on yarns of Co3O4-anchored porous carbon nanofibers, Chem. Eng. J., 409, 10.1016/j.cej.2020.128124 Ahmed, 2020, Binder-free electrode based on ZnO nanorods directly grown on aluminum substrate for high performance supercapacitors, Nanomaterials, 10, 1979, 10.3390/nano10101979 Chen, 2020, Synthesis of CuO@CoNi LDH on Cu foam for high-performance supercapacitors, Chem. Eng. J., 401, 10.1016/j.cej.2020.126145 Prabhu, 2020, Three dimensional flower-like CuO/Co3O4/r-GO heterostructure for high-performance asymmetric supercapacitors, J. Alloy. Compd., 846, 10.1016/j.jallcom.2020.156439 Wang, 2020, Maximized energy density of RuO2/RuO2 supercapacitors through potential dependence of specific capacitance, Chemelectrochem, 7, 928, 10.1002/celc.201901898 Yu, 2021, Preparation of mulberry-like RuO2 electrode material for supercapacitors, Rare Met., 40, 440, 10.1007/s12598-020-01561-8 Zhang, 2010, Template synthesis of tubular ruthenium oxides for supercapacitor applications, J. Phys. Chem. C, 114, 13608, 10.1021/jp105146c Wang, 2015, Carbon/carbon nanotube-supported RuO2 nanoparticles with a hollow interior as excellent electrode materials for supercapacitors, Nano Energy, 15, 116, 10.1016/j.nanoen.2015.04.006 Kim, 2016, Mesopore-enriched activated carbon nanofiber web containing RuO2 as electrode material for high-performance supercapacitors, J. Electroanal. Chem., 760, 64, 10.1016/j.jelechem.2015.12.001 Zhai, 2018, Nano-RuO2-decorated holey graphene composite fibers for micro-supercapacitors with ultrahigh energy density, Small, 14, 1800582, 10.1002/smll.201800582 Kong, 2017, Facile electrodepositing processed of RuO2-graphene nanosheets-CNT composites as a binder-free electrode for electrochemical supercapacitors, Electrochim. Acta, 246, 433, 10.1016/j.electacta.2017.06.019 Zhang, 2018, Design and synthesis of an organic (naphthoquinone) and inorganic (RuO2) hybrid graphene hydrogel composite for asymmetric supercapacitors, New J. Chem., 42, 14956, 10.1039/C8NJ01908H Kumar, 2018, Ruthenium oxide nanostring clusters anchored Graphene oxide nanocomposites for high-performance supercapacitors application, Mater. Res. Bull., 107, 347, 10.1016/j.materresbull.2018.08.011 Li, 2019, Hydrous RuO2 nanoparticles coated on Co(OH)2 nanoflakes as advanced electrode material of supercapacitors, Appl. Surf. Sci., 470, 306, 10.1016/j.apsusc.2018.11.142 Hummers, 1958, Preparation of graphitic oxide, J. Am. Chem. Soc., 80, 1339, 10.1021/ja01539a017 Kong, 2016, Study on the synthesis and electrochemical performance of histidine-functionalized graphene quantum dots@silicon composite anode material, Acta Chim. Sinica, 74, 620, 10.6023/A16010060 Worsley, 2010, Synthesis of graphene aerogel with high electrical conductivity, J. Am. Chem. Soc., 132, 14067, 10.1021/ja1072299 Liu, 2020, Ru catalyst supported on nitrogen-doped nanotubes as high efficiency electrocatalysts for hydrogen evolution in alkaline media, RSC Adv., 10, 22297, 10.1039/D0RA02894K Asim, 2021, Energy storage performance of binder-free ruthenium-oxide nano-needles based free-standing electrode in neutral pH electrolytes, Electrochim. Acta, 378, 10.1016/j.electacta.2021.138139 Di Bartolomeo, 2016, Graphene Schottky diodes: An experimental review of the rectifying graphene/ semiconductor heterojunction, Phys. Rep., 606, 1, 10.1016/j.physrep.2015.10.003 Cao, 2015, Quantitative investigation on the effect of hydrogenation on the performance of MnO2/H-TiO2 composite electrodes for supercapacitors, J. Mater. Chem. A, 3, 3785, 10.1039/C4TA06138A Brousse, 2020, Facile and scalable preparation of ruthenium oxide-based flexible micro-supercapacitors, Adv. Energy Mater., 10, 1903136, 10.1002/aenm.201903136 Liu, 2018, Potassium compound-assistant synthesis of multi-heteroatom doped ultrathin porous carbon nanosheets for high performance supercapacitors, Nano Energy, 51, 366, 10.1016/j.nanoen.2018.06.037 He, 2014, Microwave-assisted synthesis of Ru/mesoporous carbon composites for supercapacitors, Mater. Lett., 115, 96, 10.1016/j.matlet.2013.10.033 Guo, 2020, High-performance supercapacitors of ruthenium-based nanohybrid compounds, J. Alloy Compd., 842, 10.1016/j.jallcom.2020.155798 Tran, 2017, Comparison of ruthenium composites with thermally reduced graphene and activated carbon for supercapacitor applications, J. Mater. Sci. Mater. Electron., 28, 7969, 10.1007/s10854-017-6500-y Lou, 2016, Ruthenium nanoparticles decorated curl-like porous carbons for high performance supercapacitors, Sci. Rep.-UK, 6, 19949, 10.1038/srep19949 Chung, 2020, High-performance binder-free RuO2/electrospun carbon fiber for supercapacitor electrodes, Electrochim. Acta, 364, 10.1016/j.electacta.2020.137324