發(fā)布時(shí)間：2018-01-19 07:19

  本文關(guān)鍵詞： 三維 多孔 碳材料 陽極 微生物燃料電池　出處：《化工進(jìn)展》2017年10期 　論文類型：期刊論文

【摘要】：微生物燃料電池是一種可以從污水中直接回收能量的新型裝置。然而,相對低的輸出功率密度嚴(yán)重限制了它的應(yīng)用。陽極材料對于提高其功率密度和能量轉(zhuǎn)換效率至關(guān)重要。本文利用一步碳化法基于農(nóng)業(yè)廢棄物木薯秸稈制備了先進(jìn)的三維多孔碳陽極,用掃描電子顯微鏡觀察了所制備的材料的形貌,發(fā)現(xiàn)其內(nèi)部呈現(xiàn)天然篩管式大孔結(jié)構(gòu),可有利于增大陽極生物負(fù)載量和優(yōu)化傳質(zhì)作用。利用交流阻抗譜、循環(huán)伏安技術(shù)以及雙室微生物燃料電池結(jié)構(gòu)研究了材料的電化學(xué)性能,結(jié)果發(fā)現(xiàn),800℃下碳化得到的三維多孔碳具有最優(yōu)的電化學(xué)活性和最佳功率輸出,其最大功率密度高達(dá)73.0W/m~3,是商業(yè)碳紙的3.7倍。此研究為構(gòu)筑高效生物化學(xué)體系電極材料提供了新思路和新方法。
[Abstract]:Microbial fuel cells are a new type of device that can recover energy directly from sewage. The relatively low output power density seriously limits its application. Anode material is very important to improve its power density and energy conversion efficiency. In this paper, a one-step carbonization method was used to prepare cassava straw from agricultural waste. Three dimensional porous carbon anode. The morphology of the prepared materials was observed by scanning electron microscope (SEM). It was found that the internal structure of the material was natural sieve tube macroporous structure, which could increase the amount of biological load of anode and optimize mass transfer. The electrochemical properties of the materials were studied by cyclic voltammetry and two-chamber microbial fuel cell structure. The results showed that the three-dimensional porous carbon obtained by carbonization at 800 鈩，

本文編號(hào)：1443181