Reducing CO₂ to dense nanoporous graphene by Mg/Zn for high power electrochemical capacitors Public Deposited

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  • Reducing CO2 to dense nanoporous graphene by Mg/Zn for high power electrochemical capacitors
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  • Converting CO2 to valuable materials is attractive.Herein, we report using simple metallothermic reactions to reduce atmospheric CO2 to dense nanoporous graphene. By using a Zn/Mg mixture as a reductant, the resulted nanoporous graphene exhibits highly desirable properties: high specific surface area of 1900 m2/g, a great conductivity of 1050 S/m and a tap density of 0.63 g/cm3, comparable to activated carbon. The nanoporous graphene contains a fine mesoporous structure constructed by curved few-layer graphene nanosheets. The unique property ensemble enables one of the best high-rate performances reported for electrochemical capacitors: a specific capacitance of ~170F/g obtained at 2000 mV/s and 40 F/g at a frequency of 120 Hz. This simple fabricating strategy conceptually provides opportunities for materials scientists to design and prepare novel carbon materials with metallothermic reactions.
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  • Xing, Z., Wang, B., Gao, W., Pan, C., Halsted, J. K., Chong, E. S., ... & Ji, X. (2015). Reducing CO₂ to dense nanoporous graphene by Mg/Zn for high power electrochemical capacitors. Nano Energy, 11, 600-610. doi:10.1016/j.nanoen.2014.11.011
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  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2016-03-16T19:43:05Z (GMT) No. of bitstreams: 2XingZhenyuChemistryReducingCO2DenseNanoporous.pdf: 4706423 bytes, checksum: 5e16e17f35815845f3694f969f9dd5b6 (MD5)XingZhenyuChemistryReducingCO2DenseNanoporous_SupplementaryMaterial.pdf: 2614813 bytes, checksum: 550e7571722d241e39e742ca1b659f12 (MD5)
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2016-03-16T19:42:50ZNo. of bitstreams: 2XingZhenyuChemistryReducingCO2DenseNanoporous.pdf: 4706423 bytes, checksum: 5e16e17f35815845f3694f969f9dd5b6 (MD5)XingZhenyuChemistryReducingCO2DenseNanoporous_SupplementaryMaterial.pdf: 2614813 bytes, checksum: 550e7571722d241e39e742ca1b659f12 (MD5)
  • description.provenance : Made available in DSpace on 2016-03-16T19:43:05Z (GMT). No. of bitstreams: 2XingZhenyuChemistryReducingCO2DenseNanoporous.pdf: 4706423 bytes, checksum: 5e16e17f35815845f3694f969f9dd5b6 (MD5)XingZhenyuChemistryReducingCO2DenseNanoporous_SupplementaryMaterial.pdf: 2614813 bytes, checksum: 550e7571722d241e39e742ca1b659f12 (MD5) Previous issue date: 2015-01

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