Svitlana Pylypenko

TL;DR: Nine non-noble-metal catalysts from five different laboratories were investigated for the catalysis of O(2) electroreduction in an acidic medium, and the nitrogen and metal seem to be present in sufficient amounts in the NNMCs and do not limit activity.

TL;DR: In this article, the nitrogen functional groups introduced into a carbon support appear to influence at least three aspects of the catalyst/support system: modified nucleation and growth kinetics during catalyst nanoparticle deposition, which results in smaller catalyst particle size and increased catalyst particle dispersion, increased support/catalyst chemical binding (or "tethering"), and catalyst particle electronic structure modification, which enhances intrinsic catalytic activity.

TL;DR: A comprehensive overview of advances in the last half decade on state-of-the-art carbon modification with nitrogen heteroatoms can be found in this paper, where the benefits and effects of nitrogen modification for specific applications in the energy and environmental fields are reviewed.

TL;DR: In this article, the effects of Co loading and heat treatment temperature on the polypyrrole/C composite material were revealed through structural evaluations and electrochemical studies, based on these correlations, the authors were able to propose an ORR mechanism that occurs on this class of non-platinum based fuel cell cathode catalysts.

TL;DR: In this paper, pyrolyzed porphyrins were investigated for oxygen reduction electrocatalysis, and steady state polarization curves were obtained using gas diffusion type electrodes in 0.5 m sulfuric acid and membrane electrode assembly (MEA) configurations under working PEM fuel cell conditions.