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Spiro-(1,1)-bipyrrolidinium tetrafluoroborate salt as high voltage electrolyte for electric double layer capacitors  
Spiro-(1,1)-bipyrrolidinium tetrafluoroborate salt as high voltage electrolyte for electric double layer capacitors
資料類型: 壓縮包文件
關(guān)鍵詞: Spiro-(1  10)-bipyrrolidinium  tetrafluoroborate  Electrical  conductivity  Withstand  voltage  
Activated  carbon  electrode  Supercapacitors  
資料大小: 1704k
所屬學(xué)科:
來(lái)源: 來(lái)源網(wǎng)絡(luò)
簡(jiǎn)介:
A novel quaternary ammonium salt based on spiro-(1,10)-bipyrolidinium tetrafluoroborate (SBP-BF4) has been synthesized and dissolved in propylene carbonate (PC) with 1.5 mol/L (M) concentration for electric double-layer capacitors (EDLCs). The physic-chemical properties and electrochemical performance of SBP-BF4/PC electrolyte are investigated. Compared with the standard electrolyte1.5 MTEMABF4 inPC, the novel SBP-BF4/PC electrolyte exhibited much better electrochemical performance due to its smaller cation size, lower viscosity and higher conductivity. The specific discharge capacitance of activated carbon electrode based EDLCs using SBP-BF4/PC electrolyte is120 F/g, the energy density and power density can reach 31 kW/kg and 6938 W/kg, respectively, when the working voltage is 2.7 V and current density is 50 mA/g. The withstand voltage of activated carbon based EDLCs with SBP-BF4/PC electrolyte can reach to 3.2 V, where the stable discharge capacitance and energy density are121 F/g and 43 Wh/kg, respectively.
上傳人: shizhiqiang
上傳時(shí)間: 2014-05-22 10:16:39
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