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首页> 外文期刊>International Journal of Electrochemical Science >A high-performance carbon-carbon(C/C) Quasi-Solid-State Supercapacitor with Conducting Gel Electrolyte
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A high-performance carbon-carbon(C/C) Quasi-Solid-State Supercapacitor with Conducting Gel Electrolyte

机译：具有导电凝胶电解质的高性能碳 - 碳（C / C）准固态超级电容器

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摘要

The development of the electric double-layer capacitors (EDLCs) that pursue for the advantages of easily carrying, no leaking and high capacitance has been a strong objective at the moment. Here a new type gel electrolyte with a high special conductivity of 15.06 mS·cm-2 was fabricate by immersing polyacrylamide gel (PAM-G) matrix in 6 M KOH aqueous solution for 60 hours. As expected, the assembled quasi-solid-state supercapacitor based PAM-G electrolyte exhibits a specific capacitance (of 196 F·g-1 and 156 F·g-1 at the charge-discharge current density of 1 A·g-1 and 10 A·g-1, respectively), maximum power of 10 kW·kg-1 along with energy density of 28.6 Wh·kg-1 (under the current density of 10 A·g-1), and the capacitance retention rate keeps 98% after 5000 cycles at 1 A·g-1, demonstrating a high cycling stability, an excellent rate capability as well as a high specific capacitance of the device. The promising electrochemical performance could be attributed to the unique homogeneous and microporous three-dimensional structure of the PAM-G which can greatly enhance the permeability and transportation of different ions.
机译：追求易于承载的优点的电动双层电容器（EDLC）的开发，无泄漏和高电容在此刻是强烈的目标。这里，通过将聚丙烯酰胺凝胶（PAM-G）基质在6M KOH水溶液中浸入60小时的60小时，通过浸入606ms·CM-2的具有高特殊电导率的新型凝胶电解质。如所预期的，基于组合的准固态超级电容器的PAM-G电解质表现出特定电容（196F·G-1和156 F·G-1，充电 - 放电电流密度为1A·G-1和10 a·g-1分别），10 kW·kg-1的最大功率以及能量密度为28.6wh·kg-1（在10 a·g-1的电流密度下），电容保持率保持在1A·G-1的5000次循环后98％，证明了高循环稳定性，优异的速率能力以及器件的高比电容。有希望的电化学性能可能归因于PAM-G的独特均匀和微孔三维结构，其可以大大提高不同离子的渗透性和运输。

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