二氧化锰为阴极催化剂的微生物燃料电池孙瑾华

—。—,510006。、、。MicrobialfuelcellusingmanganesedioxideascathodicoxygenreducingcatalystSUNJin-hua,LIUJian-hao,HUANGCheng-zhu,ZHANGLi-xia,LIWei-shan(DepartmentofChemistry,SouthChinaNormalUniversity,GuangzhouGuangdong510006,China)MFC。MFC。MFCs1[1-2];2[3];3[3-4];4[5];5[5-6]。ORR－0.3～－0.45VORRMFCs。ORR[7]Pt。ORRMFCpyr-FePc、CoTTMP[8]、。MnO2、[9]--[9]。。MnO2CVMnO21mol/LKOHMFCpH。MnO2MFCspHMFCsMFCpH[10]MFC。Nafion117DuPont3%H2O21h80℃、0.5mol/L、1h。4.5cm×4.5cm0.69m20.5mmMnO2、。16(AD8223)1～99999Ω9807ACHI605C-0.8-0.6-0.4-0.20.00.20.40.60.81.01.2cbaVvs/V(.Hg/)HgOJ/(mAcm)-

mg-dapH=9.15;bpH=10.92;cpH=12.66;d1mol/LKOHHPG-280H。、、PVDF652015N--(4.5cm×4.5cm、1cm×1cm)100℃。PVDF8515。L17KlebsiellapneumoniaeL17LBNaCl10g/L,10g/L,5g/L,pH7.030℃16h4000r/min。MFC、5cm×5cmNafion117100mL。MnO2MnO23～4mg/cm2。30℃。LB12.00g/LNa2HPO4·12H2O2.57g/LNaH2PO4·2H2O3g/LpH7.03mLXM21mol/LKCl/KOHKOHpH。。CVPtφ=1mmHg/HgO1mol/LKOH15min。1mV/sMnO2(1.0cm×1.0cmMnO23.3mg/cm2)(1.0cm×1.0cm)。LSVMnO21.0cm×1.0cmMnO24mg/cm2Ptφ=1mmHg/HgO1mol/LKClpH9.15、10.92、12.661mol/LKOH15min0～－0.8V1mV/s。161000ΩMFC0～9999ΩI=U/RP=U2/RMFC。1aMnO21mol/LKOHbMnO21mol/LKOHN2CVc1mol/LKOHCV。b0.2～0.3VMnO2baMnO2cORRMnO2。2MnO2pH1mol/LKCl/KOH。a、b、c、dpH9.15、10.92、12.661mol/LKOHLSV。－0.2～－0.3VMnO2ORRpH1mol/LKCl/KOH[11]MnO2ORR。3MFC。a、cMnO2b、d-0.8-0.6-0.4-0.20.00.2-0.20.00.20.40.60.81.01.2cbaVvs/V(.Hg/)HgOJ/(mAcm)-

mg-aMnObMnONc 1mol/LKCl。MnO2115.8mW/m223.4mW/m25MnO2ORRMFCCV。4pHLSV。1mol/LKOHMFC0.25mA/cm2696.3mW/m2MFC()68.3(10.2mW/m2)MFCs(25.62mW/m2、115.6mW/m2)265[10]。5。1MnO2HO2－2～42341mol/LKOH。MFC。MnO2KOHMFCMnO2696.3mW/m2。MFCpHMFC。[1]KIMBH,KIMHJ,HYUNMS,etal.DirectelectrodereactionofFe()-reducingbacterium,Shewanellaputrefaciens[J].JMicrobiolBiotechol,1999,9:127-131.[2],.[J].,2007,283:510-513.[3]OHSE,LOGANBE.Protonexchangemembraneandelectrodesurfaceareasasfactorsthataffectpower[J].BiotechProdProcessEng,2006,70:162-169.[4]HEIJNEAT,HAMELERSHVM,WILDEVD,etal.Powergenera-tionusingdifferentcation,anionandultrafiltrationmembranesinmicrobialfuelcells[J].EnvironSciTechnol,2006,40:5200-5205.[5]ZHANGT,ZENGYL,CHENSL,etal.Improvedperformancesof0.000.020.040.060.080102030405060020406080100120dcbaV/mV
/(mWcm)-J/(mAcm)-0.00.10.20.30.40100200300400500600ApH=9.15pH=10.92pH=12.661mol/LKOHV/mVJ/(mAcm)
-0.00.10.20.30.40100200300400500600700800900B



pH=9.15pH=10.92pH=12.661mol/LKOHJ/(mAcm)
-
/(mWm)--+++→+e24H24CO6OH6OHCOeO→++OHHOeOHO+→++OH2OHO2+→HOeOHe
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