TY - JOUR
T1 - Lead ruthenate nanocrystals on reduced graphene oxides as an efficient bifunctional catalyst for metal–air batteries
AU - Na, Subin
AU - Lee, Boeun
AU - Yoon, Woo Young
AU - Yim, Taeeun
AU - Oh, Si Hyoung
N1 - Publisher Copyright:
© 2019 The Korean Society of Industrial and Engineering Chemistry
PY - 2019/11/25
Y1 - 2019/11/25
N2 - A composite consisting of lead ruthenate nanocrystals with an expanded pyrochlore structure on reduced graphene oxide nano-sheets, is reported as an efficient bifunctional catalyst for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Comparative studies for ORR show that the composite produces highly positive synergic coupling effects, strengthening a four-electron catalytic route, i.e., more positive onset potential, higher limiting current density, much smaller Tafel slope, and more durable catalytic performance after thousands of voltammetric cycling than pristine material. The composite also functions as an excellent and durable OER catalyst, exceeding the performance of NiCo2O4 and RuO2.
AB - A composite consisting of lead ruthenate nanocrystals with an expanded pyrochlore structure on reduced graphene oxide nano-sheets, is reported as an efficient bifunctional catalyst for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Comparative studies for ORR show that the composite produces highly positive synergic coupling effects, strengthening a four-electron catalytic route, i.e., more positive onset potential, higher limiting current density, much smaller Tafel slope, and more durable catalytic performance after thousands of voltammetric cycling than pristine material. The composite also functions as an excellent and durable OER catalyst, exceeding the performance of NiCo2O4 and RuO2.
KW - Bifunctional catalyst
KW - Composite
KW - Expanded pyrochlore
KW - Rechargeable metal–air batteries
KW - Reduced graphene oxide
UR - http://www.scopus.com/inward/record.url?scp=85069736595&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2019.07.015
DO - 10.1016/j.jiec.2019.07.015
M3 - Article
AN - SCOPUS:85069736595
SN - 1226-086X
VL - 79
SP - 409
EP - 417
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -