高功率電雙層材料電容研究

本文以製備一種新穎的複合式材料，並將碳材用於電雙層電容器，此電極材料是以高表面積的活化中間碳球界相瀝青(activated mesocarbone microbeads)及奈米碳管( Carbon nanotubes,CNTS )組成。藉由活化後，使界相瀝青在內部及外部生成大量孔隙，外露石墨邊緣，適合作為高效能電極材料。經由電容器測試此aMCMB電極材料具有相當高的儲能表現。此電極在0.02A g-1放電電流下，具有電容量350 F g-1，而電流量提高至0.6 A g-1時，則電容量下降至155 F g-1。為了提升電容器的功率輸出及高速充放電的操作能力，我們利用球磨機研磨的方式，降低電極組成顆粒內部離子傳遞路徑與提高碳顆粒接觸機會，此電極在0.02A g-1放電電流下，具有電容量372 F g-1，而電流量提高至0.6 A g-1時，則電容量下降至153 F g-1；而為了提高碳電極的電子傳遞與提高碳電極顆粒間孔隙，研磨過程加入CNTs，此電極0.02A g-1放電電流下，具有電容量292 F g-1，而電流量提高至0.6 A g-1時，則電容量保持至177 F g-1的電容量。

關鍵字

界相瀝青；電雙層電容；碳奈米管

並列摘要

In this study, the high surface area of activated meso-carbonemicro-beads and the carbon nanotube for use as modern composite supercapacitor electrodes. The activated mesocarbonemicrobeads will be porous in internal and external part for high performance electrode materials. The aMCMB electrode has a high energy storage capacity. This capacitance of electrode is 350 F g-1 under current is 0.02A g-1. The capacitance of electrode will decrease to 155 F g-1 under current is 0.6A g-1. The study was decreased transfer path of internal ion and raise particle touch for power output of supercapacitor and high rate charge-discharge ability. This capacitance of electrode is 372 F g-1 under current is 0.02A g-1. The capacitance of electrode will decrease to 153 F g-1 under current is 0.6A g-1. The CNTs was added to milling process for raising electron transport and inter-granular pore. This capacitance of electrode is 292 F g-1 under current is 0.02A g-1. The capacitance of electrode will decrease to 177 F g-1 under current is 0.6A g-1.

並列關鍵字

High power ； activated mesopfase pitch ； Electric double layer capacitors

參考文獻

[7] Yong Zhang, Hui Feng, Xingbing Wu, Lizhen Wang, Aiqin Zhang, Tongchi Xia, Huichao Dong, Xiaofeng Li, Linsen Zhang International Journal of Hydrogen Energy,Volume 34, Issue 11, June 2009, Pages 4889-4899

[11] lectrochimica Acta,Volume 90, 15 February 2013,Pages 535-541 Hairui Zhang, Jixiao Wang, Qiuju Shan, Zhi Wang, Shichang Wang

[3] 1．—Yon2-T—ao Tan,Fen Ran•，Ling—Bin Kong幸，Ji Liu，Long Kang．“Polyaniline nanopartieles grown on the surface of carbon microspheres aggregations for electrochemical supercapacitors”．Synthetic Metals，2012，162：114•118．

[4] Conway, B. E. Birss, V. and Wojtowicz, J. ‘‘The Role and Utilization of eudocapcitance for Energy Storage by Supercapacitros,’’ J, Power Source, 66,1(1997)。

[13] Qu D，Shill．Studies of activated carbons used in double—layer capacitors【J】．Power Sourees，1 998(74)：99—1 07．

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高功率電雙層材料電容研究

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