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   Cost Effective and Scalable Synthesis of MnO2 Doped Graphene in a Carbon Fiber/PVA: Superior Nanocomposite for High Performance Flexible Supercapacitors  
   
نویسنده taghizadeh mohammad javad ,poorbadiei behzad ,soholi esmail
منبع journal of applied chemical research - 2020 - دوره : 14 - شماره : 1 - صفحه:72 -82
چکیده    In the current study, we report new flexible, free standing and high performance electrodes forelectrochemical supercapacitors developed througha scalable but simple and efficient approach.highly porous structures based on carbon fiber and poly (vinyl alcohol) (pva) were used as apattern. the electrochemical performances of carbon fiber/go-mno2/cnt supercapacitors werecharacterized using cyclic voltammetry, galvanostatic charge/discharge and impedancespectroscopy techniques. the porosity of the electrode material was determined by scanningelectron microscopy. the electrode specific capacitance was calculated to be 68fcm-150 mv/s fromcyclic voltammetry. the prepared films could be directly used as flexible supercapacitor electrodesand exhibited a highly specific capacitance and good cycle stability. the porous structures of filmspavethe way for emission without blocking for electrolyteions and increase the specific area of thematerial. the electrochemical analysis confirms that the carbon fiber/go-mno2/cnt hasimproved particular capacitance compared to carbon fiber/go-mno2 and carbon fiber/mno2. thisstudy offers a new extremely light, conductive, inexpensive and environmentally friend electrodematerial that are promising for future flexible and efficient electrochemical supercapacitors.
کلیدواژه Supercapacitors ,Superior Nanocomposite ,Graphene ,Carbon Fiber/PVA
آدرس university of imam hossein, school of sciences, department of chemistry, Iran, university of sharif, faculty of chemistry, Iran, university of imam hossein, school of sciences, department of chemistry, Iran
 
     
   
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