Electrochemical Properties of High-Power Supercapacitors Using Single-Walled Carbon Nanotube Electrodes

Kay Hyeok An; Won Seok Kim; Young Soo Park

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Electrochemical Properties of High-Power Supercapacitors Using Single-Walled Carbon Nanotube Electrodes

机译：使用单壁碳纳米管电极的大功率超级电容器的电化学性能

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We have investigated the key factors determining the performance of supercapacitors constructed using single-walled carbon nanotube (SWNT) electrodes. Several parameters, such as composition of the binder, annealing temperature, type of current collector, charging time, and discharging current density have been optimized for the best performance of the supercapacitor with respect to energy density and power density. We find a maximum specific capacitance of 180 F/g and a measured power density of 20 kW/kg at energy densities in the range from 7 to 6.5 Wh/kg at 0.9 V in a solution of 7.5 N KOH (the currently available supercapacitors have energy densities in the range 6-7 Wh/kg and power density in the range 0.25-5 kW/kg at 2.3 V in non-aqueous solvents).

机译：我们研究了决定使用单壁碳纳米管（SWNT）电极构造的超级电容器性能的关键因素。为了使超级电容器在能量密度和功率密度方面具有最佳性能，已经优化了几个参数，例如粘合剂的组成，退火温度，集电器的类型，充电时间和放电电流密度。在7.5 N KOH的溶液中，在0.9 V的能量密度范围为7至6.5 Wh / kg的情况下，我们发现最大比电容为180 F / g，测量的功率密度为20 kW / kg（当前可用的超级电容器具有在非水溶剂中于2.3 V时的能量密度在6-7 Wh / kg范围内，功率密度在0.25-5 kW / kg。

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《Advanced Functional Materials》 |2001年第5期|p.387-392|共6页
作者
Kay Hyeok An; Won Seok Kim; Young Soo Park;
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正文语种 eng
中图分类无线电电子学、电信技术;
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1. Electrochemical doping of pure single-walled carbon nanotubes used as supercapacitor electrodes [J] . Osamu Kimizuka, Osamu Tanaike, Junya Yamashita Carbon: An International Journal Sponsored by the American Carbon Society . 2008,第14期

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3. High-power supercapacitor electrodes from single-walled carbon nanohornanotube composite [J] . Izadi-Najafabadi A., Yamada T., Futaba D.N., ACS nano . 2011,第2期

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4. Electrochemical properties of carbon nanotube as an electrode of supercapacitor [C] . N.Y.Song, B.G Min, J.M.Ko, The Meeting of the Electrochemical Society . 2002

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8. Carbon Nanotube Based Electrochemical Supercapacitor Electrodes. [R] . S. Kumar 2009

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Electrochemical Properties of High-Power Supercapacitors Using Single-Walled Carbon Nanotube Electrodes

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