In this section, you can access to the latest technical information related to the FUTURE project topic.

Boron induced strong metal-support interaction for high sintering resistance of Pt-based catalysts toward oxygen reduction reaction

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.

» Author: Dan Liu, Saisai Gao, Jianzhi Xu, Xiaojing Zhang, Zhimao Yang, Tao Yang, Bin Wang, Shengchun Yang, Chao Liang, Chuncai Kong

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