Efficient CO_2 Electrolysis with Fluorite Structure Nanoparticles Modified Perovskite Structure La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3-δ) Cathode
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摘要
Perovskite structure La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3-δ)(LSCM) cathode with unique structure can electrolyze CO_2 to CO in solid oxide electrolysers(SOEs).However,the cell performance is restricted by its electro-catalysis activity.In this work,fluorite structure nanoparticles(CeO_(2-δ)) are impregnated on LSCM cathode to improve the electro-catalysis activity.X-ray diffraction(XRD),scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS) together approve that the fluorite structure nanoparticles are uniformly distributed on the perovskite structure LSCM scaffold.Electrochemical measurements illustrate that direct CO_2 electrolysis with 10%mol CeO_(2-δ) impregnated LSCM cathode exhibits excellent performance for current density(0.5 A×cm~(-2)) and current efficiency(～95%) at 800 ℃ under 1.6 V.It is believed that the enhanced performance of directed CO_2 electrolysis may be due to the synergetic effect of fluorite structure CeO_(2-δ) nanoparticles and perovskite structure LSCM ceramic electrode.
Perovskite structure La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3-δ)(LSCM) cathode with unique structure can electrolyze CO_2 to CO in solid oxide electrolysers(SOEs).However,the cell performance is restricted by its electro-catalysis activity.In this work,fluorite structure nanoparticles(CeO_(2-δ)) are impregnated on LSCM cathode to improve the electro-catalysis activity.X-ray diffraction(XRD),scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS) together approve that the fluorite structure nanoparticles are uniformly distributed on the perovskite structure LSCM scaffold.Electrochemical measurements illustrate that direct CO_2 electrolysis with 10%mol CeO_(2-δ) impregnated LSCM cathode exhibits excellent performance for current density(0.5 A×cm~(-2)) and current efficiency(～95%) at 800 ℃ under 1.6 V.It is believed that the enhanced performance of directed CO_2 electrolysis may be due to the synergetic effect of fluorite structure CeO_(2-δ) nanoparticles and perovskite structure LSCM ceramic electrode.
Perovskite structure La_(0.75)Sr_(0.25)Cr_(0.5)Mn_(0.5)O_(3-δ)(LSCM) cathode with unique structure can electrolyze CO_2 to CO in solid oxide electrolysers(SOEs).However,the cell performance is restricted by its electro-catalysis activity.In this work,fluorite structure nanoparticles(CeO_(2-δ)) are impregnated on LSCM cathode to improve the electro-catalysis activity.X-ray diffraction(XRD),scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS) together approve that the fluorite structure nanoparticles are uniformly distributed on the perovskite structure LSCM scaffold.Electrochemical measurements illustrate that direct CO_2 electrolysis with 10%mol CeO_(2-δ) impregnated LSCM cathode exhibits excellent performance for current density(0.5 A×cm~(-2)) and current efficiency(～95%) at 800 ℃ under 1.6 V.It is believed that the enhanced performance of directed CO_2 electrolysis may be due to the synergetic effect of fluorite structure CeO_(2-δ) nanoparticles and perovskite structure LSCM ceramic electrode.
引文
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(9)Sfeir, J.; Buffat, P. A.; Mockli, P.; Xanthopoulos, N.; Vasquez, R.; Mathieu, H. J.; Van herle, J.; Thampi, K. R. Lanthanum chromite based catalysts for oxidation of methane directly on SOFC anodes. J. Catal. 2001, 202, 229-244.
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(11)Yue, X.;Irvine, J. T. S. Impedance studies on LSCM/GDC cathode for high temperature CO2 electrolysis. Electrochem. Solid-State Lett. 2012, 15,B31-B34.
(12)Yue,X.;Irvine,J.T.S.ModificationofLSCM-GDCcathodestoenhanceperformanceforhightemperatureCO2electrolysisusingsolidoxide electrolysis cells(SOECs). J. Mater. Chem. A 2017, 5, 7081-7090.
(13)Tao, S.; Irvine, J. T. S. Synthesis and characterization of(La0.75Sr0.25)Cr0.5Mn0.5O3-δa redox-stable efficient perovskite anode for SOFCs. J. Electrochem.Soc. 2004, 151, A252-A259.
(14)Li, H.; Sun, G.; Xie, K.; Qi, W.; Qin, Q.; Wei, H.; Chen, S.; Wang, Y.; Zhang, Y.; Wu, Y. Chromate cathode decorated with in-situ growth of copper nanocatalyst for high temperature carbon dioxide electrolysis. Int. J. Hydrog. Energy 2014, 39, 20888-20897.
(15)Li, Y.; Li, P.; Hu, B.; Xia, C. A nanostructured ceramic fuel electrode for efficient CO2/H2O electrolysis without safe gas. J. Mater. Chem. A 2016, 4,9236-9243.
(16)Xu, S.; Chen, S.; Li, M.; Xie, K.; Wang, Y.; Wu, Y. Composite cathode based on Fe-loaded LSCM for steam electrolysis in an oxide-ion-conducting solid oxide electrolyser. J. Power Sources 2013, 239, 332-340.
(17)Wang, S.; Tsuruta, H.; Asanuma, M.; Ishihara, T. Ni-Fe-La(Sr)Fe(Mn)O3 as a new active cermet cathode for intermediate-temperature CO2 electrolysis using a LaGaO3-based electrolyte. Adv. Energy Mater. 2015, 5, 2-10.
(18)Wang, S.; Inoishi, A.; Hong, J.; Ju, Y.; Hagiwara, H.; Ida, S.; Ishihara, T. Ni-Fe bimetallic cathodes for intermediate temperature CO2 electrolyzers using a La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte. J. Mater. Chem. A 2013, 1, 12455-12461.
(19)Gan,L.;Ye,L.;Ruan,C.;Chen,S.;Xie,K.Redox-reversibleironorthovanadatecathodeforsolidoxidesteamelectrolyzer.Adv.Sci.2016,3,1500186-1500193.
(2)Yang, L.; Cheng, Z.; Liu, M.; Wilson, L. New insights into sulfur poisoning behavior of Ni-YSZ anode from long-term operation of anode-supported SOFCs. Energy Environ. Sci. 2010, 3, 1804-1809.
(3)Qi, W.; Xie, K.; Liu, M.; Wu, G.; Wang, Y.; Zhang, Y.; Wu, Y. Single-phase nickel-doped ceria cathode with in situ grown nickel nanocatalyst for direct high-temperature carbon dioxide electrolysis. RSC Adv. 2014, 4, 40494-40504.
(4)Zhang, X.; Song, Y.; Wang, G.; Bao, X. Co-electrolysis of CO2 and H2O in high-temperature solid oxide electrolysis cells:recent advance in cathodes.Journal of Energy Chemistry 2017, 26, 839-853.
(5)Ye,L.;Zhang,M.;Huang,P.;Guo,G.;Hong,M.;Li,C.;Irvine,J.T.S.;Xie,K.EnhancingCO2electrolysisthroughsynergisticcontrolof non-stoichiometry and doping to tune cathode surface structures. Nat. Commun. 2017, 8, 14785-14795.
(6)Wilson,J.R.;Kobsiriphat,W.;Mendoza,R.;Chen,H.Y.;Hiller,J.M.;Miller,D.J.;Thornton,K.;Voorhees,P.W.;Adler,S.B.;Barnett,S.A.Three-dimensional reconstruction of a solid-oxide fuel-cell anode. Nat. Mater. 2006, 5, 541-544.
(7)Bertei, A.; Ruiz-Trejo, E.; Kareh, K.; Yufit, V.; Wang, X.; Tariq, F.; Brandon, N. P. The fractal nature of the three-phase boundary:a heuristic approach to the degradation of nanostructured solid oxide fuel cell anodes. Nano. Energy 2017, 38, 526-536.
(8)Kim-Lohsoontorn, P.;Bae, J. Electrochemical performance of solid oxide electrolysis cell electrodes under high-temperature coelectrolysis of steam and carbon dioxide. J. Power Sources 2011, 196, 7161-7168.
(9)Sfeir, J.; Buffat, P. A.; Mockli, P.; Xanthopoulos, N.; Vasquez, R.; Mathieu, H. J.; Van herle, J.; Thampi, K. R. Lanthanum chromite based catalysts for oxidation of methane directly on SOFC anodes. J. Catal. 2001, 202, 229-244.
(10)Tao, S.; Irvine, J. T. S. A redox-stable efficient anode for solid-oxide fuel cells. Nat. Mater. 2003, 2, 320-323.
(11)Yue, X.;Irvine, J. T. S. Impedance studies on LSCM/GDC cathode for high temperature CO2 electrolysis. Electrochem. Solid-State Lett. 2012, 15,B31-B34.
(12)Yue,X.;Irvine,J.T.S.ModificationofLSCM-GDCcathodestoenhanceperformanceforhightemperatureCO2electrolysisusingsolidoxide electrolysis cells(SOECs). J. Mater. Chem. A 2017, 5, 7081-7090.
(13)Tao, S.; Irvine, J. T. S. Synthesis and characterization of(La0.75Sr0.25)Cr0.5Mn0.5O3-δa redox-stable efficient perovskite anode for SOFCs. J. Electrochem.Soc. 2004, 151, A252-A259.
(14)Li, H.; Sun, G.; Xie, K.; Qi, W.; Qin, Q.; Wei, H.; Chen, S.; Wang, Y.; Zhang, Y.; Wu, Y. Chromate cathode decorated with in-situ growth of copper nanocatalyst for high temperature carbon dioxide electrolysis. Int. J. Hydrog. Energy 2014, 39, 20888-20897.
(15)Li, Y.; Li, P.; Hu, B.; Xia, C. A nanostructured ceramic fuel electrode for efficient CO2/H2O electrolysis without safe gas. J. Mater. Chem. A 2016, 4,9236-9243.
(16)Xu, S.; Chen, S.; Li, M.; Xie, K.; Wang, Y.; Wu, Y. Composite cathode based on Fe-loaded LSCM for steam electrolysis in an oxide-ion-conducting solid oxide electrolyser. J. Power Sources 2013, 239, 332-340.
(17)Wang, S.; Tsuruta, H.; Asanuma, M.; Ishihara, T. Ni-Fe-La(Sr)Fe(Mn)O3 as a new active cermet cathode for intermediate-temperature CO2 electrolysis using a LaGaO3-based electrolyte. Adv. Energy Mater. 2015, 5, 2-10.
(18)Wang, S.; Inoishi, A.; Hong, J.; Ju, Y.; Hagiwara, H.; Ida, S.; Ishihara, T. Ni-Fe bimetallic cathodes for intermediate temperature CO2 electrolyzers using a La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte. J. Mater. Chem. A 2013, 1, 12455-12461.
(19)Gan,L.;Ye,L.;Ruan,C.;Chen,S.;Xie,K.Redox-reversibleironorthovanadatecathodeforsolidoxidesteamelectrolyzer.Adv.Sci.2016,3,1500186-1500193.