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 - 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 - 文章
AN - SCOPUS:85146558875
SN - 0378-7753
VL - 560
JO - Journal of Power Sources
JF - Journal of Power Sources
M1 - 232722
ER -
