TY - JOUR
T1 - Boron induced strong metal-support interaction for high sintering resistance of Pt-based catalysts toward oxygen reduction reaction
AU - Liu, Dan
AU - Gao, Saisai
AU - Xu, Jianzhi
AU - Zhang, Xiaojing
AU - Yang, Zhimao
AU - Yang, Tao
AU - Wang, Bin
AU - Yang, Shengchun
AU - Liang, Chao
AU - Kong, Chuncai
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Insufficient thermal and electrochemical stability is a large challenge for carbon-supported Pt-based nanoparticles (NPs) as oxygen reduction reaction (ORR) catalysts. Herein, a facile pyrolysis method is developed for the synthesis of ultrasmall Pt NPs anchored on boron-doped carbon (Pt/(B-C)). The stronger interaction between Pt and boron-doped carbon (B-C) endows catalysts with improved sintering resistance to stabilize the Pt NPs of sub-3 nm up to 700 °C. The Pt/(B-C)600 catalyst presents a mass activity (MA) of 0.30 A mgPt−1, which is 3 times that of commercial Pt/C (0.10 A mgPt−1). After durability test, the MA of the Pt/(B-C)600 catalyst has only decreased by 19.7% (commercial Pt/C dropped by 58.7%). This method can also be extended to prepare B-C supported Pt alloy NPs (PtM/(B-C), M = Co, Fe, Ni, Cu), which exhibit superior ORR performance. This study provides a general strategy for the synthesis of thermally and electrochemically stable carbon supported Pt-based catalysts.
AB - Insufficient thermal and electrochemical stability is a large challenge for carbon-supported Pt-based nanoparticles (NPs) as oxygen reduction reaction (ORR) catalysts. Herein, a facile pyrolysis method is developed for the synthesis of ultrasmall Pt NPs anchored on boron-doped carbon (Pt/(B-C)). The stronger interaction between Pt and boron-doped carbon (B-C) endows catalysts with improved sintering resistance to stabilize the Pt NPs of sub-3 nm up to 700 °C. The Pt/(B-C)600 catalyst presents a mass activity (MA) of 0.30 A mgPt−1, which is 3 times that of commercial Pt/C (0.10 A mgPt−1). After durability test, the MA of the Pt/(B-C)600 catalyst has only decreased by 19.7% (commercial Pt/C dropped by 58.7%). This method can also be extended to prepare B-C supported Pt alloy NPs (PtM/(B-C), M = Co, Fe, Ni, Cu), which exhibit superior ORR performance. This study provides a general strategy for the synthesis of thermally and electrochemically stable carbon supported Pt-based catalysts.
KW - Boron doped carbon
KW - Oxygen reduction reaction
KW - Pt-based nanoparticles
KW - Sintering resistance
UR - https://www.scopus.com/pages/publications/85135694080
U2 - 10.1016/j.apsusc.2022.154466
DO - 10.1016/j.apsusc.2022.154466
M3 - 文章
AN - SCOPUS:85135694080
SN - 0169-4332
VL - 604
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 154466
ER -