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zhangtianwen銀蟲(chóng) (小有名氣)
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[求助]
求該領(lǐng)域大神翻譯一篇關(guān)于石墨烯論文的摘要。。。! 已有1人參與
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Supercapacitors, also called ultracapacitors or electrochemical capacitors, store electrical charge on high-surface-area conducting materials. Their widespread use is limited by their low energy storage density and relatively high effective series resistance. Using chemical activation of exfoliated graphite oxide, we synthesized a porous carbon with a Brunauer-Emmett-Teller surface area of up to 3100 square meters per gram, a high electrical conductivity, and a low oxygen and hydrogen content. This sp2-bonded carbon has a continuous three-dimensional network of highly curved, atom-thick walls that form primarily 0.6- to 5-nanometer-width pores. Two-electrode supercapacitor cells constructed with this carbon yielded high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes. The processes used to make this carbon are readily scalable to industrial levels. 十萬(wàn)火急,急,謝謝! |
銅蟲(chóng) (小有名氣)
| 超級(jí)電容器,又被稱(chēng)作電化學(xué)電容器,將電荷儲(chǔ)存在高比表面積的導(dǎo)電材料中。材料的低能量密度和相對(duì)較高的內(nèi)阻限制了其廣泛應(yīng)用。通過(guò)化學(xué)活化剝離的氧化石墨,我么合成了一種高性能的多孔碳材料,該材料BET高達(dá)3100M2/g,具有高電導(dǎo)率和低含氧、含氫量。這種通過(guò)sp2雜化連接起來(lái)的碳材料片層只有單原子厚度且高度卷曲,孔徑只有0.6-5nm,具有連續(xù)的三維網(wǎng)狀結(jié)構(gòu)。將此材料組裝成雙電極體系電容器進(jìn)行電化學(xué)測(cè)試,有機(jī)體系和無(wú)機(jī)體系都得到較高的質(zhì)量比電容和能量密度。而用于制備此碳材料的工藝也可以大規(guī)模工業(yè)化使用。 |
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