TY - JOUR
T1 - Combining structurally ordered intermetallics with N-doped carbon confinement for efficient and anti-poisoning electrocatalysis
AU - Hu, Yezhou
AU - Shen, Tao
AU - Zhao, Xueru
AU - Zhang, Jujia
AU - Lu, Yun
AU - Shen, Jun
AU - Lu, Shanfu
AU - Tu, Zhengkai
AU - Xin, Huolin L.
AU - Wang, Deli
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/12/15
Y1 - 2020/12/15
N2 - Exploring effective strategies for fabricating electrocatalysts toward oxygen reduction reaction (ORR) is of great importance for the fuel cells application. Herein, a facile strategy was developed to combine structurally ordered intermetallics with N-doped carbon confinement. Taking N-doped carbon encapsulated Pt-Fe ordered intermetallic nanoparticles (O-Pt-Fe@NC/C) as example, the in situ formed N-doped carbon shell not only benefits the nanoparticles distribute homogeneously on carbon support but also prevents the nanoparticles from agglomeration or detachment. As a result, the O-Pt-Fe@NC/C exhibits excellent ORR performance and stability as well as enhanced anti-poisoning capability towards CO, SOx and POx. When assembled as cathode materials for high temperature polymer electrolyte membrane fuel cells, a peak power density of 384 mW cm−2 is obtained for O-Pt-Fe@NC/C electrode at 160 °C. The demonstrated strategy provides a new insight into the preparation of highly durable and active carbon encapsulated Pt-based nanocatalysts for fuel cells.
AB - Exploring effective strategies for fabricating electrocatalysts toward oxygen reduction reaction (ORR) is of great importance for the fuel cells application. Herein, a facile strategy was developed to combine structurally ordered intermetallics with N-doped carbon confinement. Taking N-doped carbon encapsulated Pt-Fe ordered intermetallic nanoparticles (O-Pt-Fe@NC/C) as example, the in situ formed N-doped carbon shell not only benefits the nanoparticles distribute homogeneously on carbon support but also prevents the nanoparticles from agglomeration or detachment. As a result, the O-Pt-Fe@NC/C exhibits excellent ORR performance and stability as well as enhanced anti-poisoning capability towards CO, SOx and POx. When assembled as cathode materials for high temperature polymer electrolyte membrane fuel cells, a peak power density of 384 mW cm−2 is obtained for O-Pt-Fe@NC/C electrode at 160 °C. The demonstrated strategy provides a new insight into the preparation of highly durable and active carbon encapsulated Pt-based nanocatalysts for fuel cells.
KW - Anti-poisoning capability
KW - Carbon encapsulation
KW - High-temperature polymer electrolyte membrane fuel cells
KW - Oxygen reduction reaction
KW - Pt-based electrocatalysts
UR - https://www.scopus.com/pages/publications/85088963615
U2 - 10.1016/j.apcatb.2020.119370
DO - 10.1016/j.apcatb.2020.119370
M3 - 文章
AN - SCOPUS:85088963615
SN - 0926-3373
VL - 279
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 119370
ER -