TY - JOUR
T1 - Synergetic effect induced/tuned bimetallic nanoparticles (Pt-Ni) anchored graphene as a catalyst for oxygen reduction reaction and scalable SS-314L serpentine flow field proton exchange membrane fuel cells (PEMFCs)
AU - Velayutham, Rajavel
AU - Palanisamy, Karthikeyan
AU - Manikandan, Ramu
AU - Velumani, Thiagarajan
AU - Kumar AP, Senthil
AU - Puigdollers, Joaquim
AU - Chul Kim, Byung
N1 - Publisher Copyright:
© 2022
PY - 2022/8
Y1 - 2022/8
N2 - A simple design of electroactive and cost-effective electrocatalysts for oxygen reduction reaction (ORR) activity is crucial towards energy conversion in the commercialization of proton exchange membrane fuel cells (PEMFCs). Herein, we synthesized a stable electroactive bimetallic catalyst of Ni anchored with low loading of Pt nanoparticles, and graphene used as a supportive material for catalyst integration (Pt3-Ni/G). It exhibited maximum electrochemical surface area (ECSA, 108.56 m2/gPt), mass activity (2.2 A mgPt) and specific activity (3.47 mA cm−2), signifying an excellent ORR activity. In addition, a scalable PEMFC fabrication through 0.2 mgPtcm−2 Pt3-Ni/G as cathode with an active area of 25 cm2 and stainless steel-314L (SS-314L) used as a serpentine flow field. This strategy provides a maximum power output of 71.25 W mgPt−1 at current density 1.59 A cm−2. In addition, Pt3-Ni/C//Pt/C, based PEMFC system delivered a constant power output (68.75 W mgPt−1) even after 4 h of continuous cycling.
AB - A simple design of electroactive and cost-effective electrocatalysts for oxygen reduction reaction (ORR) activity is crucial towards energy conversion in the commercialization of proton exchange membrane fuel cells (PEMFCs). Herein, we synthesized a stable electroactive bimetallic catalyst of Ni anchored with low loading of Pt nanoparticles, and graphene used as a supportive material for catalyst integration (Pt3-Ni/G). It exhibited maximum electrochemical surface area (ECSA, 108.56 m2/gPt), mass activity (2.2 A mgPt) and specific activity (3.47 mA cm−2), signifying an excellent ORR activity. In addition, a scalable PEMFC fabrication through 0.2 mgPtcm−2 Pt3-Ni/G as cathode with an active area of 25 cm2 and stainless steel-314L (SS-314L) used as a serpentine flow field. This strategy provides a maximum power output of 71.25 W mgPt−1 at current density 1.59 A cm−2. In addition, Pt3-Ni/C//Pt/C, based PEMFC system delivered a constant power output (68.75 W mgPt−1) even after 4 h of continuous cycling.
KW - Bimetallic electrocatalyst
KW - Graphene
KW - Oxygen reduction reaction
KW - PEM fuel cell
KW - SS-314L serpentine flow field
UR - http://www.scopus.com/inward/record.url?scp=85130587391&partnerID=8YFLogxK
U2 - 10.1016/j.mseb.2022.115780
DO - 10.1016/j.mseb.2022.115780
M3 - Article
AN - SCOPUS:85130587391
SN - 0921-5107
VL - 282
JO - Materials Science and Engineering: B
JF - Materials Science and Engineering: B
M1 - 115780
ER -