化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2014年
6期
2186-2192
,共7页
何海波%王许云%白立俊%郭庆杰
何海波%王許雲%白立俊%郭慶傑
하해파%왕허운%백립준%곽경걸
膜%循环伏安法%交流阻抗法%固定床%燃料电池
膜%循環伏安法%交流阻抗法%固定床%燃料電池
막%순배복안법%교류조항법%고정상%연료전지
membranes%cyclic voltammetry%electrochemical impedance spectroscopy%fixed-bed%fuel cells
采用化学氧化还原法制备高纯度石墨烯（GR），利用电化学修饰法得到石墨烯/聚苯胺（GR/PANI）膜阳极，采用红外光谱（FI-IR）、X 射线衍射（XRD）、场发射扫描电镜（FESEM）对所制备复合电极进行了表征，采用循环伏安法（CV）、交流阻抗法（EIS）考察了复合电极的电化学性能。将 GR/PANI 膜阳极应用于固定床微生物燃料电池（MFC），考察了电池的产电性能。均匀地附着在石墨烯表面，GR/PANI 膜电极具有良好可逆性，其电阻小、导电性良好。GR/PANI膜阳极应用于MFC,最大功率密度和开路电压分别为230.2 mW·m-2和834.6 mV，比未修饰阳极的最大功率密度和开路电压分别提高了110.6%和34.8%，GR/PANI膜阳极的表观内阻也由未修饰阳极的843.2Ω降低为469.4Ω，且电池启动时间大大缩短，产电稳定性增强。结果表明，GR/PANI复合物是一种优良的电极材料，GR/PANI膜阳极MFC具有良好的产电性能。
採用化學氧化還原法製備高純度石墨烯（GR），利用電化學脩飾法得到石墨烯/聚苯胺（GR/PANI）膜暘極，採用紅外光譜（FI-IR）、X 射線衍射（XRD）、場髮射掃描電鏡（FESEM）對所製備複閤電極進行瞭錶徵，採用循環伏安法（CV）、交流阻抗法（EIS）攷察瞭複閤電極的電化學性能。將 GR/PANI 膜暘極應用于固定床微生物燃料電池（MFC），攷察瞭電池的產電性能。均勻地附著在石墨烯錶麵，GR/PANI 膜電極具有良好可逆性，其電阻小、導電性良好。GR/PANI膜暘極應用于MFC,最大功率密度和開路電壓分彆為230.2 mW·m-2和834.6 mV，比未脩飾暘極的最大功率密度和開路電壓分彆提高瞭110.6%和34.8%，GR/PANI膜暘極的錶觀內阻也由未脩飾暘極的843.2Ω降低為469.4Ω，且電池啟動時間大大縮短，產電穩定性增彊。結果錶明，GR/PANI複閤物是一種優良的電極材料，GR/PANI膜暘極MFC具有良好的產電性能。
채용화학양화환원법제비고순도석묵희（GR），이용전화학수식법득도석묵희/취분알（GR/PANI）막양겁，채용홍외광보（FI-IR）、X 사선연사（XRD）、장발사소묘전경（FESEM）대소제비복합전겁진행료표정，채용순배복안법（CV）、교류조항법（EIS）고찰료복합전겁적전화학성능。장 GR/PANI 막양겁응용우고정상미생물연료전지（MFC），고찰료전지적산전성능。균균지부착재석묵희표면，GR/PANI 막전겁구유량호가역성，기전조소、도전성량호。GR/PANI막양겁응용우MFC,최대공솔밀도화개로전압분별위230.2 mW·m-2화834.6 mV，비미수식양겁적최대공솔밀도화개로전압분별제고료110.6%화34.8%，GR/PANI막양겁적표관내조야유미수식양겁적843.2Ω강저위469.4Ω，차전지계동시간대대축단，산전은정성증강。결과표명，GR/PANI복합물시일충우량적전겁재료，GR/PANI막양겁MFC구유량호적산전성능。
Graphene (GR) was synthesized from natural graphene powder by chemical oxidation-reduction method. Graphene/polyaniline (GR/PANI) film anode was prepared by electrochemical modification and used in fixed-bed microbial fuel cell (MFC) to examine the electrochemical performance of the prepared anodes. The prepared anodes were characterized by IR spectrum, X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM), respectively. The electrochemical properties were studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Polyaniline evenly attached to graphene and GR/PANI film electrode had good reversibility, small resistance and good electrical conductivity. When the GR/PANI film anode was used in MFC, maximum output power density and open circuit voltage were up to 230.2 mW·m-2 and 834.6 mV respectively, 110.6% and 34.8% higher than those of unmodified anode. The resistance of GR/PANI film anode also decreased from 843.2Ωof the unmodified anode to 469.4Ω. The experiment results indicated that, the GR/PANI composite was an excellent electrode material, and the MFC with GR/PANI film anode showed good electricity production performance.
