Surface modification of carbon cloth electrode in flexible supercapacitors with heterogeneous carbonaceous materials
Carbon materials are commonly used electrode materials.However,the chemically inert properties and low specific surface areas limit their applications in supercapacitors.Microwave pyrolysis combined with flame synthesis was proposed to modify the surface of carbon cloth for the development of heterogeneous carbonaceous electrodes with a high specific surface area and improved chemical activity.It is found that a large number of carbon nanoparticles are anchored on the carbon cloth via flame synthesis,resulting in an improved specific surface area and hydrophilicity.After microwave pyrolysis,there is a significant increase in the specific capacitance(178.7 F/g at a current density of 1 A/g)and energy density[20.6(W·h)/kg at a power density of 400 W/kg]of carbon cloth.Meanwhile,after 10 000 cycles,a excellent electrochemical cycling stability is exhibited and it has high potential in flexible supercapacitor electrode material.Also,the modification method provided in this case,which does not involve the use of additional solvents or the long-term operation of high energy-consuming equipment,is a worthwhile green modification technology for carbon material.
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维普
