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Supplementary InformationEnabling fast electron transfers through both bacterial outer-membrane redox centers and endogenous electron mediators by polyaniline hybridized large-mesoporous carbon anode for high-performance microbial fuel cellsLong Zou a,b,c, Yan Qiao a,c, Canyu Zhong a,c, and Chang Ming Li a,c,d,* a Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, Chinab College of Life Science, Jiangxi Normal University, Nanchang 330022, Chinac Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, Chinad Institute of Materials Science and Devices, Suzhou University of Science and Technology, Suzhou 215011, China*Corresponding authors: ecmli@swu. (C.M. Li)Fig. S1. SEM image of the commercial CaCO3 nanoparticles with average size of 40－60 nm. The scale bare is 100 nm.Fig. S2. SEM images of bulk carbon pyrolyzed from plant leaves extractive without CaCO3 nanoparticles as templates.Fig. S3. (a) Cyclic voltammograms at a scan speed of 5 mV s-1 of PANI-LMC hybrid with different proportions in three-electrode cells filled with anaerobic suspensions of S. putrefaciens CN32, (b) polarization curves and output power density plots in dual-chamber MFCs.Fig. S4. SEM images of LMC (a) and 40% PANI-LMC (b).Fig. S5. Nitrogen adsorption-desorption isotherms of bulk carbon (a) and carbon cloth (b).Fig. S6. The standard relationship line between fluorescent intensity at emission wavelength of 525 nm and concentration of riboflavin with an excitation 440 nm (a), and the fluorescent emission spectrum of the supernate of S. putrefaciens CN32 culture.Fig. S7. Water contact angle measurements of LMC (a) and PANI-LMC hybrid (b).Figure S8 First cycle output voltage plots of the dual-chamber MFCs equipped with different anodes.Table S1. Summary of the recently reported performance of MFCs inoculated with Shewanella species (pure culture) with similar experimental setup and operating level. Anode MFC typeBacterial strainPower density (mW m-2)Ref.PANI-LMC Dual chamberS. putrefaciens CN321280This workLMCDual chamberS. putrefaciens CN32878MWCNT/rGODual chamberS. putrefaciens CN32789 ADDIN EN.CITE <EndNote><Cite><Author>Zou</Author><Year>2016</Year><RecNum>641</RecNum><DisplayText>[1]</DisplayText><record><rec-number>641</rec-number><foreign-keys><key app="EN" db-id="2sft9df0naa5r1evtxfve9042fpa99d29e5a">641</key></foreign-keys><ref-type name="Journal Article">17</ref-type><contributors><authors><author>Zou, Long</author><author>Qiao, Yan</author><author>Wu, Xiao-Shuai</author><author>Li, Chang Ming</author></authors></contributors><titles><title>Tailoring hierarchically porous graphene architecture by carbon nanotube to accelerate extracellular electron transfer of anodic biofilm in microbial fuel cells</title><secondary-title>Journal of Power Sources</secondary-title></titles><periodical><full-title>Journal of Power Sources</full-title></periodical><pages>143-150</pages><volume>328</volume><keywords><keyword>Graphene</keyword><keyword>Carbon nanotube</keyword><keyword>Biofilm</keyword><keyword>Extracellular electron transfer</keyword><keyword>Microbial fuel cell</keyword></keywords><dates><year>2016</year><pub-dates><date>10/1/</date></pub-dates></dates><isbn>0378-7753</isbn><urls><related-urls><url>;[1]NiO/carbon clothDual chamberS. putrefaciens CN321024 ADDIN EN.CITE <EndNote><Cite><Author>Qiao</Author><Year>2014</Year><RecNum>115</RecNum><DisplayText>[2]</DisplayText><record><rec-number>115</rec-number><foreign-keys><key app="EN" db-id="2sft9df0naa5r1evtxfve9042fpa99d29e5a">115</key></foreign-keys><ref-type name="Journal Article">17</ref-type><contributors><authors><author>Qiao, Yan</author><author>Wu, Xiao-Shuai</author><author>Li, Chang Ming</author></authors></contributors><titles><title>Interfacial electron transfer of Shewanella putrefaciens enhanced by nanoflaky nickel oxide array in microbial fuel cells</title><secondary-title>Journal of Power Sources</secondary-title></titles><periodical><full-title>Journal of Power Sources</full-title></periodical><pages>226-231</pages><volume>266</volume><dates><year>2014</year><pub-dates><date>Nov 15</date></pub-dates></dates><isbn>0378-7753</isbn><accession-num>WOS:000338806300031</accession-num><urls><related-urls><url>&lt;Go to ISI&gt;://WOS:000338806300031</url></related-urls></urls><electronic-resource-num>10.1016/j.jpowsour.2014.05.015</electronic-resource-num></record></Cite></EndNote>[2]CNT-ILDual chamberS. putrefaciens CN321076 ADDIN EN.CITE <EndNote><Cite><Author>Wei</Author><Year>2016</Year><RecNum>410</RecNum><DisplayText>[3]</DisplayText><record><rec-number>410</rec-number><foreign-keys><key app="EN" db-id="2sft9df0naa5r1evtxfve9042fpa99d29e5a">410</key></foreign-keys><ref-type name="Journal Article">17</ref-type><contributors><authors><author>Wei, Huan</author><author>Wu, Xiao-Shuai</author><author>Zou, Long</author><author>Wen, Guo-Yun</author><author>Liu, Ding-Yu</author><author>Qiao, Yan</author></authors></contributors><titles><title>Amine-terminated ionic liquid functionalized carbon nanotubes for enhanced interfacial electron transfer of Shewanella putrefaciens anode in microbial fuel cells</title><secondary-title>Journal of Power Sources</secondary-title></titles><periodical><full-title>Journal of Power Sources</full-title></periodical><pages>192-198</pages><volume>315</volume><dates><year>2016</year></dates><isbn>0378-7753</isbn><urls></urls></record></Cite></EndNote>[3]CNFDual chamberS. putrefaciens CN321747 ADDIN EN.CITE <EndNote><Cite><Author>Zou</Author><Year>2016</Year><RecNum>406</RecNum><DisplayText>[4]</DisplayText><record><rec-number>406</rec-number><foreign-keys><key app="EN" db-id="2sft9df0naa5r1evtxfve9042fpa99d29e5a">406</key></foreign-keys><ref-type name="Journal Article">17</ref-type><contributors><authors><author>Zou, Long</author><author>Qiao, Yan</author><author>Wu, Zhen-Yu</author><author>Wu, Xiao-Shuai</author><author>Xie, Jia-Le</author><author>Yu, Shu-Hong</author><author>Guo, Jinhong</author><author>Li, Chang Ming</author></authors></contributors><titles><title>Tailoring Unique Mesopores of Hierarchically Porous Structures for Fast Direct Electrochemistry in Microbial Fuel Cells</title><secondary-title>Advanced Energy Materials</secondary-title></titles><periodical><full-title>Advanced Energy Materials</full-title></periodical><volume>6</volume><number>4</number><dates><year>2016</year><pub-dates><date>Feb 18</date></pub-dates></dates><isbn>1614-6832</isbn><accession-num>WOS:000371147000005</accession-num><urls><related-urls><url>&lt;Go to ISI&gt;://WOS:000371147000005</url></related-urls></urls><custom7>1501535</custom7><electronic-resource-num>10.1002/aenm.201501535</electronic-resource-num></record></Cite></EndNote>[4]GCFDual chamberS. putrefaciens 786 ADDIN EN.CITE 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Zou, Y. Qiao, X.-S. Wu, C.M. Li, Tailoring hierarchically porous graphene architecture by carbon nanotube to accelerate extracellular electron transfer of anodic biofilm in microbial fuel cells, Journal of Power Sources, 328 (2016) 143-150.[2] Y. Qiao, X.-S. Wu, C.M. Li, Interfacial electron transfer of Shewanella putrefaciens enhanced by nanoflaky nickel oxide array in microbial fuel cells, Journal of Power Sources, 266 (2014) 226-231.[3] H. Wei, X.-S. Wu, L. Zou, G.-Y. Wen, D.-Y. Liu, Y. Qiao, Amine-terminated ionic liquid functionalized carbon nanotubes for enhanced interfacial electron transfer of Shewanella putrefaciens anode in microbial fuel cells, Journal of Power Sources, 315 (2016) 192-198.[4] L. Zou, Y. Qiao, Z.-Y. Wu, X.-S. Wu, J.-L. Xie, S.-H. Yu, J. Guo, C.M. Li, Tailoring Unique Mesopores of Hierarchically Porous Structures for Fast Direct Electrochemistry in Microbial Fuel Cells, Advanced Energy Materials, 6 (2016).[5] L. Yang, S. Wang, S. Peng, H. Jiang, Y. Zhang, W. 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