Electrochemical energy storage devices(EESs)play a crucial role for the construction of sustainable energy storage system from the point of generation to the end user due to the intermittent nature of renewable source...Electrochemical energy storage devices(EESs)play a crucial role for the construction of sustainable energy storage system from the point of generation to the end user due to the intermittent nature of renewable sources.Additionally,to meet the demand for next-generation electronic applications,optimizing the energy and power densities of EESs with long cycle life is the crucial factor.Great e orts have been devoted towards the search for new materials,to augment the overall performance of the EESs.Although there are a lot of ongoing researches in this field,the performance does not meet up to the level of commercialization.A further understanding of the charge storage mechanism and development of new electrode materials are highly required.The present review explains the overview of recent progress in supercapattery devices with reference to their various aspects.The di erent charge storage mechanisms and the multiple factors involved in the performance of the supercapattery are described in detail.Moreover,recent advancements in this supercapattery research and its electrochemical performances are reviewed.Finally,the challenges and possible future developments in this field are summarized.展开更多
We report a wire-shaped three-dimensional(3D)-hybrid supercapacitor with high volumetric capacitance and high energy density due to an interconnected 3D-configuration of the electrode allowing for large number of elec...We report a wire-shaped three-dimensional(3D)-hybrid supercapacitor with high volumetric capacitance and high energy density due to an interconnected 3D-configuration of the electrode allowing for large number of electrochemical active sites,easy access of electrolyte ions,and facile charge transport for flexible wearable applications.The interconnected and compact electrode delivers a high volumetric capacitance(gravimetric capacitance)of 73 F cm−3(2446 F g−1),excellent rate capability,and cycle stability.The 3D-nickel cobalt-layered double hydroxide onto 3D-nickel wire(NiCo LDH/3D-Ni)//the 3D-manganese oxide onto 3D-nickel wire(Mn3O4/3D-Ni)hybrid supercapacitor exhibits energy density of 153.3 Wh kg−1 and power density of 8810 W kg−1.The red lightemitting diode powered by the as-prepared hybrid supercapacitor can operate for 80 min after being charged for tens of seconds and exhibit excellent electrochemical stability under various deformation conditions.The results verify that such wire-shaped 3D-hybrid supercapacitors are promising alternatives for batteries with long charge–discharge times,for smart wearable and implantable devices.展开更多
基金the Technology Mission Division(TMD),Department of Science and Technology(DST),New Delhi,India,for a research Grant under Materials for Energy Storage(MES)Scheme No.DST/TMD/MES/2K17/29International Bilateral Cooperation Division(TMD),Department of Science and Technology(DST),New Delhi,India for a research grant under Indo-German Project scheme no.INT/FRG/DAAD/P-09/2018Department of Science and Technology for the financial assistance under DST-Inspire fellowship scheme(IF170869).
文摘Electrochemical energy storage devices(EESs)play a crucial role for the construction of sustainable energy storage system from the point of generation to the end user due to the intermittent nature of renewable sources.Additionally,to meet the demand for next-generation electronic applications,optimizing the energy and power densities of EESs with long cycle life is the crucial factor.Great e orts have been devoted towards the search for new materials,to augment the overall performance of the EESs.Although there are a lot of ongoing researches in this field,the performance does not meet up to the level of commercialization.A further understanding of the charge storage mechanism and development of new electrode materials are highly required.The present review explains the overview of recent progress in supercapattery devices with reference to their various aspects.The di erent charge storage mechanisms and the multiple factors involved in the performance of the supercapattery are described in detail.Moreover,recent advancements in this supercapattery research and its electrochemical performances are reviewed.Finally,the challenges and possible future developments in this field are summarized.
基金supported by national research foundation of Korea(NRF)(No.NRF-2019R1H1A2039743)S-Oil corporation,and “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning(KETEP)granted financial resource from the Ministry of Trade,Industry and Energy,Republic of Korea(No.20194010201890)
文摘We report a wire-shaped three-dimensional(3D)-hybrid supercapacitor with high volumetric capacitance and high energy density due to an interconnected 3D-configuration of the electrode allowing for large number of electrochemical active sites,easy access of electrolyte ions,and facile charge transport for flexible wearable applications.The interconnected and compact electrode delivers a high volumetric capacitance(gravimetric capacitance)of 73 F cm−3(2446 F g−1),excellent rate capability,and cycle stability.The 3D-nickel cobalt-layered double hydroxide onto 3D-nickel wire(NiCo LDH/3D-Ni)//the 3D-manganese oxide onto 3D-nickel wire(Mn3O4/3D-Ni)hybrid supercapacitor exhibits energy density of 153.3 Wh kg−1 and power density of 8810 W kg−1.The red lightemitting diode powered by the as-prepared hybrid supercapacitor can operate for 80 min after being charged for tens of seconds and exhibit excellent electrochemical stability under various deformation conditions.The results verify that such wire-shaped 3D-hybrid supercapacitors are promising alternatives for batteries with long charge–discharge times,for smart wearable and implantable devices.
