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Hong Jin South Dakota State University Jun 14/2013

Carbon Materials from DDGS for Supercapacitors and Properties Improvement by H 2 O 2 Surface Modification. Hong Jin South Dakota State University Jun 14/2013. Outline. Introduction Supercapacitors Carbon electrode materials Characterization Porous properties SEM

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Hong Jin South Dakota State University Jun 14/2013

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  1. Carbon Materials from DDGS for Supercapacitors and Properties Improvement by H2O2 Surface Modification Hong Jin South Dakota State University Jun 14/2013

  2. Outline • Introduction • Supercapacitors • Carbon electrode materials • Characterization • Porous properties • SEM • Raman spectrum • Electrochemical properties • Conclusion

  3. Introduction--supercapacitors supercapacitors Hybrid capacitors Double layer Pseudocapacitors

  4. Introduction—carbon materials Carbon nanotube Graphene Activated carbon

  5. Introduction—carbon materials ethanol Fermentation DDGS biorenewable Supercapacitors storage energy energy

  6. Introduction—carbon materials Energy market DDGS biofuel Pyrolysis Biochar Activated carbon Modified AC

  7. Characterization--BET

  8. Characterization--BET a BET (Brunauer-Emmett-Teller) surface area. b Total pore volume, derived from NLDFT model. cMicropore volume, derived from NLDFT model. dMesopore volume, derived from NLDFT model.

  9. Characterization—SEM

  10. Characterization—Raman

  11. Electrochemical--Biochar

  12. Electrochemical--AC

  13. Electrochemical—H2O2 Modified AC

  14. Electrochemical-EIS

  15. Conclusion • The biochar does not show good properties • The activated carbon presents high specific capacitance • The hydrogen peroxide modified carbon shows higher surface area • The modified carbon demonstrates best cyclic voltammetry property and lowest inner resistance

  16. Acknowledgements Thank you

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