基于CVD直接生長的碳納米管/MnO2高效超級電容器研究
李莉，陳李慧，謝非，錢維金，董長昆
溫州大學(xué)微納結(jié)構(gòu)與光電器件研究所
HIGH-PERFORMANCE MWNT/MnO2 SURPERCAPACITOR BASED ON CVD DIRECT GROWTH TECHNIQUE
LI Li，CHEN Li-hui，XIE Fei，QIANWei-jin，DONG Chang-kun
Institute of Micro Structure and Optoelectronic Devices，Wenzhou University

摘要：通過化學(xué)氣相沉積（CVD）法在泡沫鎳基底直接生長多壁碳納米管（MWNTs），采用水熱法在MWNT上原位沉積MnO2，合成MnO2-MWNT-Ni foam 超級電容器復(fù)合電極。相比MnO2-Ni foam 電極，由于優(yōu)越的結(jié)構(gòu)和導(dǎo)電性能，MnO2-MWNT-Ni foam 復(fù)合電極有更好的電化學(xué)反應(yīng)活性，電荷傳遞電阻從0.411 Ω下降至0.054 Ω。三電極系統(tǒng)下，MnO2-MWNT-Ni foam 復(fù)合結(jié)構(gòu)的比電容為771.5 F/g，1 000 個循環(huán)后的保持率為102.7%，展現(xiàn)了電容特性和循環(huán)穩(wěn)定性。MnO2-MWNT-Ni foam 復(fù)合電極成本低、比電容大、功率密度和能量密度高、循環(huán)壽命長，在超級電容器和其他電池的制備中具有優(yōu)勢。

關(guān)鍵詞：碳納米管,  超級電容器,  直接生長,  化學(xué)氣相沉積,  二氧化錳,  水熱合成法    
Abstract：In this work，multi-walled carbon nanotubes（MWNTs）are grown directly on nickel foam substrates without extra catalyst deposition by chemical vapor deposition（CVD）technique，followed by in situ deposition of manganese dioxide from the facile hydrothermal method to prepare the MnO2-MWNT-Ni foam electrode for supercapacitor application. Due to superior structural and electronic conductivity properties，the MnO2-MWNT-Ni foam electrode greatly improved the electrochemical reaction properties comparing with MnO2- Ni Foam electrode，and the charge transfer resistance dropped from 0.411 Ω to 0.054 Ω. In the three-electrode system，the MnO2-MWNT-Ni foam electrode presented a high specific capacitance of 771.5 F/g with capacitance retention of 102.7% after 1 000 cycles，demonstrated excellent capacitance performance and long-term stability. The MnO2-MWNT-Ni foam composite exhibits superior properties of lowcost，high specific capacitance，high energy density & power density，and long-term cyclic stability，which is promising for supercapacitor and other battery applications.

Key words：carbon nanotube    supercapacitor    direct growth    Chemical Vapor Deposition    MnO2    hydro thermal method
    
作者簡介: 李莉（1991-），女人，陜西省渭源人，碩士研究生，研究方向為低維材料能源器件

引用本文: 李莉，陳李慧，謝非，錢維金，董長昆. 基于CVD直接生長的碳納米管/MnO2高效超級電容器研究[J]. 真空與低溫, 2017, 23(3): 148-.
LI Li，CHEN Li-hui，XIE Fei，QIANWei-jin，DONG Chang-kun. HIGH-PERFORMANCE MWNT/MnO2 SURPERCAPACITOR BASED ON CVD DIRECT GROWTH TECHNIQUE. journal1, 2017, 23(3): 148-.

文章來源：《真空與低溫》雜志2017年23卷3期

刊出日期：2017-06-28

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