TY - JOUR
T1 - Evaluation of the electrocatalytic performance of a novel nanocomposite cathode material for ceramic fuel cells
AU - Bello, Idris Temitope
AU - Song, Yufei
AU - Yu, Na
AU - Li, Zheng
AU - Zhao, Siyuan
AU - Maradesa, Adeleke
AU - Liu, Tong
AU - Shao, Zongping
AU - Ni, Meng
N1 - Funding Information:
M. NI appreciates the grant (Project Number: N_PolyU552/20) from the Research Grants Council, University Grants Committee, Hong Kong SAR, and the Project of Strategic Importance Program of The Hong Kong Polytechnic University (P0035168). The authors appreciate Shiyanjia lab (shiyanjia.com) for helping with the STEM characterizations.
Funding Information:
M. NI appreciates the grant (Project Number: N_PolyU552/20 ) from the Research Grants Council , University Grants Committee , Hong Kong SAR, and the Project of Strategic Importance Program of The Hong Kong Polytechnic University ( P0035168 ). The authors appreciate Shiyanjia lab ( shiyanjia.com ) for helping with the STEM characterizations.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/3/15
Y1 - 2023/3/15
N2 - Cathode materials are pivotal in advancing ceramic fuel cell (CFC) technology. However, they still suffer from insufficient oxygen reduction reaction (ORR) activity and a high thermal expansion coefficient (TEC). In this study, we develop a thermodynamically stable self-ordered nanocomposite cathode material with the unique composition, BaCo0.5Ce0.3Fe0.1Yb0.1O3-δ (BCCFYb). Upon calcination, the precursor material separates into a host cubic and ancillary rhombohedral phase. We compare the performance of the triple ionic and electronic (O2−/H+/e−) conducting BCCFYb to that of cobalt-rich oxide-ion and electron (O2−/e−) conducting BaCo0.833Yb0.167O3-δ (BCYb), cerium-rich proton and electronic (H+/e−) conducting BaCe0.75Fe0.25O3-δ (BCF), and Co–Ce-rich triple ionic and electronic (O2−/H+/e−) conducting BaCo0.833Yb0.167O3-δ - BaCe0.75Fe0.25O3-δ (BCYb-BCF) traditional composite materials. The BCCFYb demonstrates a low TEC, good operational stability, and superior cathodic performance in both oxygen ion- and proton-conducting CFC modes, making it a promising cathode material for ceramic fuel cells.
AB - Cathode materials are pivotal in advancing ceramic fuel cell (CFC) technology. However, they still suffer from insufficient oxygen reduction reaction (ORR) activity and a high thermal expansion coefficient (TEC). In this study, we develop a thermodynamically stable self-ordered nanocomposite cathode material with the unique composition, BaCo0.5Ce0.3Fe0.1Yb0.1O3-δ (BCCFYb). Upon calcination, the precursor material separates into a host cubic and ancillary rhombohedral phase. We compare the performance of the triple ionic and electronic (O2−/H+/e−) conducting BCCFYb to that of cobalt-rich oxide-ion and electron (O2−/e−) conducting BaCo0.833Yb0.167O3-δ (BCYb), cerium-rich proton and electronic (H+/e−) conducting BaCe0.75Fe0.25O3-δ (BCF), and Co–Ce-rich triple ionic and electronic (O2−/H+/e−) conducting BaCo0.833Yb0.167O3-δ - BaCe0.75Fe0.25O3-δ (BCYb-BCF) traditional composite materials. The BCCFYb demonstrates a low TEC, good operational stability, and superior cathodic performance in both oxygen ion- and proton-conducting CFC modes, making it a promising cathode material for ceramic fuel cells.
KW - Cathode
KW - Ceramic fuel cell
KW - Oxygen reduction reaction
KW - Protonic ceramic fuel cell
KW - Self-ordering
KW - Solid oxide fuel cell
UR - http://www.scopus.com/inward/record.url?scp=85146558875&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2023.232722
DO - 10.1016/j.jpowsour.2023.232722
M3 - Journal article
AN - SCOPUS:85146558875
SN - 0378-7753
VL - 560
JO - Journal of Power Sources
JF - Journal of Power Sources
M1 - 232722
ER -