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[資源]
ACS NANO剛出來的具有實(shí)際意義的超電電極探討
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先上摘要:Nanoporous nickel hydroxide (Ni(OH)2) thin film was grown on the surface of ultrathin-graphite foam (UGF) via a hydrothermal reaction. The resulting free-standing Ni(OH)2/UGF composite was used as the electrode in a supercapacitor without the need for addition of either binder or metal-based current collector. The highly conductive 3D UGF network facilitates electron transport and the porous Ni(OH)2 thin film structure shortens ion diffusion paths and facilitates the rapid migration of electrolyte ions. An asymmetric supercapacitor was also made and studied with Ni(OH)2/UGF as the positive electrode and activated microwave exfoliated graphite oxide (?a-MEGO?) as the negative electrode. The highest power density of the fully packaged asymmetric cell (44.0 kW/kg) was much higher (2?27 times higher), while the energy density was comparable to or higher, than high-end commercially available supercapacitors. This asymmetric supercapacitor had a capacitance retention of 63.2% after 10000 cycles. 文章一出來后,我仔細(xì)看了,很少看到做超電的文章能發(fā)到這個(gè)雜志上,個(gè)人感覺亮點(diǎn)在于:1、選擇泡沫石墨做集流體(看引用就知道這個(gè)東西很高級(jí),都發(fā)到science上去了),優(yōu)于傳統(tǒng)的泡沫鎳,碳紙以及金屬箔片。2、雖然單位面積上長(zhǎng)的活性物質(zhì)少,但計(jì)算比容時(shí)包括了集流體的質(zhì)量,算出的數(shù)值更可信,也更有實(shí)際意義。3、不只單做電極,進(jìn)行了組裝,使得更有實(shí)際意義(不像婁雄文的帶灌水的性質(zhì),為發(fā)文章而發(fā)文章)。對(duì)于我們這些跟著牛人走的孩子來說,我要能做出泡沫石墨或者能買到,我就換個(gè)體系試試 ,這是小弟我的一點(diǎn)愚見,希望各位高手多多探討一下這篇文章! |
鋰電資源共享 | 納米技術(shù)與能源及模擬 | Nano&Micro | 萬卷閣之搜神記 |
電化學(xué)電源、電源管理 | 新能源 | Science | 鋰電池 |
納米材料+光電子學(xué) | 超級(jí)電容器基礎(chǔ)相關(guān) | 無機(jī)化學(xué)科研 | 2012 |
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犯大錯(cuò)了,從參考文獻(xiàn)中下載Ultrathin Graphite Foam: A Three-Dimensional Conductive Network for Battery Electrodes這篇文獻(xiàn)后,竟忘了自己的重點(diǎn),慚愧呀,還望見諒! 現(xiàn)重新上傳 |
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