One-step synthesis of carbon-supported electrocatalysts

• Sebastian Tigges,
• Nicolas Wöhrl,
• Ivan Radev,
• Ulrich Hagemann,
• Markus Heidelmann,
• Thai Binh Nguyen,
• Stanislav Gorelkov,
• Stephan Schulz and
• Axel Lorke

Beilstein J. Nanotechnol. 2020, 11, 1419–1431, doi:10.3762/bjnano.11.126

• parameters (CV1, CV2, and CV3) and a commercially available fuel cell catalyst (HiSPEC4000) measured by CV. Normalized ECSA as a function of the AST cycles measured by CV. The superior long-term stability of the Pt/CNW samples CV1 and CV2, when compared to the commercially available HiSPEC4000, can be

Design criteria for stable Pt/C fuel cell catalysts

• Josef C. Meier,
• Carolina Galeano,
• Ioannis Katsounaros,
• Jonathon Witte,
• Hans J. Bongard,
• Angel A. Topalov,
• Claudio Baldizzone,
• Stefano Mezzavilla,
• Ferdi Schüth and
• Karl J. J. Mayrhofer

Beilstein J. Nanotechnol. 2014, 5, 44–67, doi:10.3762/bjnano.5.5

• location electron microscopy, is also extended to commercial materials and used as a basis for a discussion of general fuel cell catalyst design principles. Namely, the effects of particle size, inter-particle distance, certain support characteristics and thermal treatment on the catalyst performance and

• in particular the catalyst stability are evaluated. Based on our results, a set of design criteria for more stable and active Pt/C and Pt-alloy/C materials is suggested. Keywords: catalyst design criteria; degradation mechanisms; fuel cell catalyst; nanoparticles; stability; Introduction The

• fuel cell catalyst needs to preserve its activity over an extended lifetime and to avoid degradation under operation, which is macroscopically reflected in a loss of the electrochemically active surface area (ECSA). A gradual loss of ECSA will inevitably lead to efficiency losses of the fuel cell and