TY - JOUR
T1 - Low-cost graphite as durable support for Pt-based cathode electrocatalysts for proton exchange membrane based fuel cells
AU - Chourashiya, Muralidhar
AU - Vindt, Steffen Thrane
AU - Velázquez Palenzuela, Amado Andrés
AU - Pedersen, Christoffer Mølleskov
AU - Kallesøe, Christian
AU - Andersen, Shuang Ma
N1 - Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2018/12/27
Y1 - 2018/12/27
N2 - Proton exchange membrane fuel cell (PEMFC) technology has reached pre-commercial viability, but their insufficient durability acts as a major roadblock in its full-fledged utilization. It has been well established that the issue of durability is majorly due to the corrosion of carbon support used for Pt. Therefore, a search for low-cost and robust alternative support is highly desirable. In this paper, different graphite (and graphene) materials as durable support for Pt-based electrocatalyst are investigated. We followed the top-down approach where a fully graphitized support is mildly wet-milled and surface-treated to give a sufficient surface modification for improved Pt deposition on these supports. All the graphite-supported Pt samples showed better durability than that of state-of-the-art commercial electrocatalysts. Considering both activity and durability the best catalyst among the investigated samples showed a comparable mass specific activity (MSA) of 0.186 A/mg and significantly higher durability (70%) after 7500 stress cycles. For HiSpec9100 and BASF commercial electrocatalysts, the normalized ESA retention value after 7500 stress cycles was 40% and 47%, respectively.
AB - Proton exchange membrane fuel cell (PEMFC) technology has reached pre-commercial viability, but their insufficient durability acts as a major roadblock in its full-fledged utilization. It has been well established that the issue of durability is majorly due to the corrosion of carbon support used for Pt. Therefore, a search for low-cost and robust alternative support is highly desirable. In this paper, different graphite (and graphene) materials as durable support for Pt-based electrocatalyst are investigated. We followed the top-down approach where a fully graphitized support is mildly wet-milled and surface-treated to give a sufficient surface modification for improved Pt deposition on these supports. All the graphite-supported Pt samples showed better durability than that of state-of-the-art commercial electrocatalysts. Considering both activity and durability the best catalyst among the investigated samples showed a comparable mass specific activity (MSA) of 0.186 A/mg and significantly higher durability (70%) after 7500 stress cycles. For HiSpec9100 and BASF commercial electrocatalysts, the normalized ESA retention value after 7500 stress cycles was 40% and 47%, respectively.
KW - Accelerated stress test
KW - Graphite support
KW - PEMFC
KW - Supported Pt
KW - Wet-ball-milling
UR - http://www.scopus.com/inward/record.url?scp=85056725973&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.10.187
DO - 10.1016/j.ijhydene.2018.10.187
M3 - 文章
AN - SCOPUS:85056725973
SN - 0360-3199
VL - 43
SP - 23275
EP - 23284
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 52
ER -
