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dc.contributor.authorXia, Chuan
dc.contributor.authorZhu, Peng
dc.contributor.authorJiang, Qiu
dc.contributor.authorPan, Ying
dc.contributor.authorLiang, Wentao
dc.contributor.authorStavitsk, Eli
dc.contributor.authorAlshareef, Husam N.
dc.contributor.authorWang, Haotian
dc.date.accessioned2019-09-05T07:36:18Z
dc.date.available2019-09-05T07:36:18Z
dc.date.issued2019-09-02
dc.identifier.doi10.1038/s41560-019-0451-x
dc.identifier.urihttp://hdl.handle.net/10754/656689
dc.description.abstractElectrocatalytic CO2 reduction is often carried out in a solution electrolyte such as KHCO3(aq), which allows for ion conduction between electrodes. Therefore, liquid products that form are in a mixture with the dissolved salts, requiring energy-intensive downstream separation. Here, we report continuous electrocatalytic conversion of CO2 to pure liquid fuel solutions in cells that utilize solid electrolytes, where electrochemically generated cations (such as H+) and anions (such as HCOO−) are combined to form pure product solutions without mixing with other ions. Using a HCOOH-selective (Faradaic efficiencies > 90%) and easily scaled Bi catalyst at the cathode, we demonstrate production of pure HCOOH solutions with concentrations up to 12 M. We also show 100 h continuous and stable generation of 0.1 M HCOOH with negligible degradation in selectivity and activity. Production of other electrolyte-free C2+ liquid oxygenate solutions, including acetic acid, ethanol and n-propanol, are also demonstrated using a Cu catalyst. Finally, we show that our CO2 reduction cell with solid electrolytes can be modified to suit other, more complex practical applications.
dc.description.sponsorshipThis work was supported by Rice University. This research used the 8-ID (ISS) beamline of the National Synchrotron Light Source II and the Center for Functional Nanomaterials, US Department of Energy Office of Science User Facilities operated for the DOE Office of Science by Brookhaven National Laboratory under contract no. DE-SC0012704. Q.J. and H.N.A. acknowledge the support from King Abdullah University of Science and Technology (KAUST).
dc.publisherSpringer Science and Business Media LLC
dc.relation.urlhttp://www.nature.com/articles/s41560-019-0451-x
dc.rightsArchived with thanks to Nature Energy
dc.titleContinuous production of pure liquid fuel solutions via electrocatalytic CO2 reduction using solid-electrolyte devices
dc.typeArticle
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalNature Energy
dc.rights.embargodate3/5/2020
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA.
dc.contributor.institutionRowland Institute, Harvard University, Cambridge, MA, USA
dc.contributor.institutionKostas Advanced Nano- Kostas Advanced Nano-Characterization Facility (KANCF), Northeastern University, Innovation Campus at Burlington, MA (ICBM), Burlington, MA, USA
dc.contributor.institutionNational Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, USA Characterization Facility (KANCF), Northeastern University, Innovation Campus at Burlington, MA (ICBM), Burlington, MA, USA
kaust.personJiang, Qiu
kaust.personAlshareef, Husam N.


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