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Electrospun Flexible Nanofibres for Batteries:Design and Application

Electrochemical Energy Reviews 2023年第1期6卷 464-531页

作者： P.Robert Ilango A.Dennyson Savariraj Hongjiao Huang Linlin Li Guangzhi Hu Huaisheng Wang Xiaodong Hou Byung Chul Kim Seeram Ramakrishna Shengjie Peng Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina Institute for Energy Studies University of North DakotaGrand ForksND 58202USA Department of Advanced Components and Materials Engineering Sunchon National University255 Jungang-roSuncheon-siJeollanam-do 57922Republic of Korea Department of Mechanical Engineering Khalifa University127788 Abu DhabiUnited Arab Emirates Department of Physics PSGR Krishnammal College for WomenCoimbatoreTamil Nadu 641004India School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252000LiaoningChina Mechanical Engineering National University of SingaporeSingapore 117583Singapore

Flexible and free-standing electrospun nanofibres have been used as electrode materials in electrochemical energy storage systems due to their versatile properties,such as mechanical stability,superb electrical conductivity,and high functionality.In energy storage systems such as metal-ion,metal-air,and metal-sulphur batteries,electrospun nanofibres are vital for constructing flexible electrodes and substantially enhancing their electrochemical properties.The need for flexible batteries has increased with increasing demand for new products such as wearable and flexible devices,including smartwatches and flexible displays.Conventional batteries have several semirigid to rigid components that limit their expansion in the flexible device market.The creation of flexible and wearable batteries with greater mechanical flexibility,higher energy,and substantial power density is critical in meeting the demand for these new electronic items.The implementation of carbon and carbon-derived composites into flexible electrodes is required to realize this goal.It is essential to understand recent advances and the comprehensive foundation behind the synthesis and assembly of various flexible electrospun nanofibres.The design of nanofibres,including those comprising carbon,N-doped carbon,hierarchical,porous carbon,and metal/metal oxide carbon composites,will be explored.We will highlight the merits of electrospun carbon flexible electrodes by describing porosity,surface area,binder-free and free-standing electrode construction,cycling stability,and performance rate.Significant scientific progress has been achieved and logistical challenges have been met in promoting secondary battery usage;therefore,this review of flexible electrode materials will advance this easily used and sought-after technology.The challenges and prospects involved in the timely development of carbon nanofibre composite flexible electrodes and batteries will be addressed.

关键词： Electrospinning Carbon composite Flexibility Electrode Batteries

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Mixed-phase composites derived from cobalt terephthalate as efficient battery-type electrodes for high-performance supercapattery

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Journal of Materials Science & Technology 2023年第26期157卷 220-233页

作者： Ramu Manikandan Antonysamy dennyson savariraj Goli Nagaraju A.M.Kale J.Puigdollers Hyejin Park Hyun-Soo Kim Jae-Min Oh C.Justin Raj Byung Chul Kim Department of Energy and Materials Engineering Dongguk University-SeoulSeoul 04620Republic of Korea Advanced Functional Nanohybrid Material Laboratory Department of ChemistryDongguk University Seoul-CampusJung-guSeoul04620Republic of Korea Department of Materials Imperial College LondonLondon SW72AZUnited Kingdom Department of Advanced Components and Materials Engineering Sunchon National University255Jungang-roSuncheon-siJellanamdo57922Republic of Korea Department of Enginyeria Electrònica Universitat Politècnica CatalunyaBarcelona 08034Spain Next Generation Battery Research Center Korea Electrotechnology Research Institute(KERI)Changwon51543Republic of Korea Physics Division School of Advanced SciencesVellore Institute of Technology(VIT)Chennai CampusChennai600127Tamil NaduIndia

Interfacial engineering of two-dimensional(2D)monometallic phosphides enables remarkable structural and electrochemical properties in energy storage devices.Herein,2D nanosheets(NSs)of FeP_(2)/Co_(2) P were grown on Ni-foam(FCP)using a solution-based and phosphorization approach to be used as freestanding for high-performance energy storage devices.An effective phosphorization strategy is successfully de-veloped to improve the overall crystalline phase,tailor the morphology,and boost the electrochemical performances of electrodes.The FCP NSs electrode exhibits a battery-type redox behavior with a maxi-mum high areal capacity of 1.96 C cm^(-2) at 4 mA cm^(-2) in 6 M KOH aqueous electrolyte compared to the other counterparts.The superior electrochemical performance was achieved by increasing the electroac-tive sites and high conductivity via surface tailoring and fast redox reactions.Moreover,a supercapattery was assembled utilizing FCP and activated carbon(AC)electrodes and it revealed maximum specific en-ergy(E_(s))and specific power(P_(s))of 41.2 Wh kg^(-1) and 7578 W kg^(-1) with good cycling stability of 91%after 10,000 cycles at 5 A g^(-1).Eventually,the supercapattery has been explored in practical applications by lighting up light-emitting diodes(LEDs),representing the real-time performance of superior energy storage devices.

关键词： 2D nanosheet Monometallic phosphide Battery-type material Supercapattery Energy storage

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