TY - JOUR
T1 - Graphene/carbon structured catalyst layer to enhance the performance and durability of the high-temperature proton exchange membrane fuel cells
AU - Ji, Zhaoqi
AU - Chen, Jianuo
AU - Guo, Zunmin
AU - Zhao, Ziyu
AU - Cai, Rongsheng
AU - Rigby, Maxwell T.P.
AU - Haigh, Sarah J.
AU - Perez-Page, Maria
AU - Shen, Yitao
AU - Holmes, Stuart M.
N1 - Publisher Copyright:
© 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
PY - 2022/12
Y1 - 2022/12
N2 - In this study, nitrogen doped electrochemically exfoliated reduced graphene oxide and carbon black supported platinum (Pt/NrEGO2-CB3) has been prepared to enhance the performance and durability of high-temperature PEMFCs with lower Pt loading. On the one hand, Pt/NrEGO2-CB3 with the strong interaction between the Pt and nitrogen (N) prevent agglomeration of Pt particles and Pt particles is 5.46 ± 1.46 nm, which is smaller than that of 6.78 ± 1.34 nm in Pt/C. Meanwhile, ECSA of Pt/NrEGO2-CB3 decrease 13.65% after AST, which is much lower than that of 97.99% in Pt/C. On the other hand, the NrEGO flakes in MEAac act as a barrier to mitigate phosphoric acid redistribution, which improves the formation of triple-phase boundaries (TPBs) and gives stable operation of the MEAac with a lower decay rate of 0.02 mV h−1 within 100 h. After steady-state operation, the maximum power density of Pt/NrEGO2-CB3 (0.411 W cm−2) is three times higher than that of conventional Pt/C (0.134 W cm−2) in high-temperature PEMFCs. After AST, the mass transfer resistance of Pt/NrEGO2-CB3 electrode (0.560 Ω cm2) is lower than that in Pt/C (0.728 Ω cm2).
AB - In this study, nitrogen doped electrochemically exfoliated reduced graphene oxide and carbon black supported platinum (Pt/NrEGO2-CB3) has been prepared to enhance the performance and durability of high-temperature PEMFCs with lower Pt loading. On the one hand, Pt/NrEGO2-CB3 with the strong interaction between the Pt and nitrogen (N) prevent agglomeration of Pt particles and Pt particles is 5.46 ± 1.46 nm, which is smaller than that of 6.78 ± 1.34 nm in Pt/C. Meanwhile, ECSA of Pt/NrEGO2-CB3 decrease 13.65% after AST, which is much lower than that of 97.99% in Pt/C. On the other hand, the NrEGO flakes in MEAac act as a barrier to mitigate phosphoric acid redistribution, which improves the formation of triple-phase boundaries (TPBs) and gives stable operation of the MEAac with a lower decay rate of 0.02 mV h−1 within 100 h. After steady-state operation, the maximum power density of Pt/NrEGO2-CB3 (0.411 W cm−2) is three times higher than that of conventional Pt/C (0.134 W cm−2) in high-temperature PEMFCs. After AST, the mass transfer resistance of Pt/NrEGO2-CB3 electrode (0.560 Ω cm2) is lower than that in Pt/C (0.728 Ω cm2).
KW - Accelerated stress test
KW - Durability
KW - High-temperature proton exchange membrane fuel cell
KW - Phosphoric acid loss
KW - Pt catalyst degradation
UR - http://www.scopus.com/inward/record.url?scp=85138571690&partnerID=8YFLogxK
U2 - 10.1016/j.jechem.2022.08.004
DO - 10.1016/j.jechem.2022.08.004
M3 - Article
AN - SCOPUS:85138571690
SN - 2095-4956
VL - 75
SP - 399
EP - 407
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
ER -
