{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T17:58:48Z","timestamp":1787162328847,"version":"build-2736575974"},"reference-count":63,"publisher":"Wiley","issue":"40","license":[{"start":{"date-parts":[[2022,9,4]],"date-time":"2022-09-04T00:00:00Z","timestamp":1662249600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Triple ionic and electronic conductivity (TIEC) in cathode materials for protonic ceramic fuel cells (PCFCs) is a desirable feature that enhances the spatial expansion of active reaction sites for electrochemical oxygen reduction reaction. The realization of optimal TIEC in single\u2010phase materials, however, is challenging. A facile route that facilitates the optimization of TIEC in PCFC cathodes is the strategic development of multiphase cathode materials. In this study, a cubic\u2010rhombohedral TIEC nanocomposite material with the composition Ba(CeCo)\n                    <jats:sub>0.4<\/jats:sub>\n                    (FeZr)\n                    <jats:sub>0.1<\/jats:sub>\n                    O\n                    <jats:sub>3\u2212<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>\u03b4<\/jats:sub>\n                    <\/jats:italic>\n                    (BCCFZ) is designed via self\u2010assembly engineering. The material consists of a mixed ionic and electronic conducting phase, BaCo\n                    <jats:sub>1\u2212(<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>+<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>+<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>)<\/jats:sub>\n                    Ce\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    Fe\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    Zr\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    O\n                    <jats:sub>3\u2212<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>\u03b4<\/jats:sub>\n                    <\/jats:italic>\n                    (M\u2010BCCFZ), and a dominant proton\u2010conducting phase, BaCe\n                    <jats:sub>1\u2212(<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>+<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>+<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>)<\/jats:sub>\n                    Co\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    Zr\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    Fe\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    O\n                    <jats:sub>3\u2212<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>\u03b4<\/jats:sub>\n                    <\/jats:italic>\n                    (H\u2010BCCZF). The dominant cerium\u2010rich H\u2010BCCFZ phase enhances the material's oxygen vacancy concentration and the proton defects formation and transport with a low enthalpy of protonation of \u221230 \u00b1 9\u00a0kJ mol\n                    <jats:sup>\u22121<\/jats:sup>\n                    . The area\u2010specific resistance of the BCCFZ symmetrical cell is 0.089 \u2126 cm\n                    <jats:sup>2<\/jats:sup>\n                    at 650 \u00b0C in 2.5% H\n                    <jats:sub>2<\/jats:sub>\n                    O\u2010air. The peak power density of the anode\u2010supported single cell based on BCCFZ cathode reaches 1054\u00a0mW cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    at 650 \u00b0C with good operation stability spanning over 500\u00a0h at 550 \u00b0C. These promote BCCFZ as a befitting cathode material geared toward PCFC commercialization.\n                  <\/jats:p>","DOI":"10.1002\/smll.202203207","type":"journal-article","created":{"date-parts":[[2022,9,4]],"date-time":"2022-09-04T14:51:28Z","timestamp":1662303088000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":77,"title":["Electrokinetic Insights into the Triple Ionic and Electronic Conductivity of a Novel Nanocomposite Functional Material for Protonic Ceramic Fuel Cells"],"prefix":"10.1002","volume":"18","author":[{"given":"Idris Temitope","family":"Bello","sequence":"first","affiliation":[{"name":"Department of Building and Real Estate Research Institute for Sustainable Urban Development (RISUD) &amp; Research Institute for Smart Energy (RISE) The Hong Kong Polytechnic University  Hung Hom Kowloon Hong Kong 999077 P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting\u2010Shan","family":"Chan","sequence":"additional","affiliation":[{"name":"National Synchrotron Radiation Research Center  Hsinchu Taiwan 300 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siyuan","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Building and Real Estate Research Institute for Sustainable Urban Development (RISUD) &amp; Research Institute for Smart Energy (RISE) The Hong Kong Polytechnic University  Hung Hom Kowloon Hong Kong 999077 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheng","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Building and Real Estate Research Institute for Sustainable Urban Development (RISUD) &amp; Research Institute for Smart Energy (RISE) The Hong Kong Polytechnic University  Hung Hom Kowloon Hong Kong 999077 P. R. 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