Enhancing Oxygen Reduction Reaction Catalytic Activity Using a Sub‐Stoichiometric CaTiO 3− δ Additive
نویسندگان
چکیده
منابع مشابه
Tuning the catalytic activity of graphene nanosheets for oxygen reduction reaction via size and thickness reduction.
Currently, the fundamental factors that control the oxygen reduction reaction (ORR) activity of graphene itself, in particular, the dependence of the ORR activity on the number of exposed edge sites remain elusive, mainly due to limited synthesis routes of achieving small size graphene. In this work, the synthesis of low oxygen content (<2.5±0.2 at. %), few layer graphene nanosheets with latera...
متن کاملPolypyrrole-derived Mesoporous Nitrogen-doped Carbons with Intrinsic Catalytic Activity in the Oxygen Reduction Reaction
to 0.33 S cm, a necessary property for electrochemical applications, while a mesoporous structure reduces mass transport limitations. These characteristics are further combined with a high N content (3.55 – 5.45 wt.%). As a result, the as-prepared materials exhibit an enhanced intrinsic electrocatalytic activity towards the oxygen reduction reaction (ORR). They exhibit an onset potential of ~ -...
متن کاملCatalytic activity of Pt38 in the oxygen reduction reaction from first-principles simulations
The activity of truncated octahedral Pt38 clusters as a catalyst in the oxygen reduction reaction (ORR) is investigated via first-principles simulations. Three catalytic steps: O2 dissociation (O2ads → 2Oads), O hydration (Oads + H2Oads → 2OHads), and H2O formation (OHads + Hads → H2Oads) are considered, in which all reactant species are co-adsorbed on the Pt38 cluster according to a Langmuir–H...
متن کاملEnhancing oxygen reduction reaction activity of Pt-shelled catalysts via subsurface alloying.
Despite remarkable efforts have been put into the field of Pt-shelled catalysts containing an atomically thin Pt surface layer for the oxygen reduction reaction (ORR) in the last decade, further development of new Pt-shelled catalysts is still necessary. Here, a new set of Pt-shelled catalysts by subsurface alloying with early transition metals such as Mn and Fe is predicted to be a good candid...
متن کاملElectrocatalytic Oxygen Reduction Reaction
Oxygen (O2) is the most abundant element in the Earth’s crust. The oxygen reduction reaction (ORR) is also the most important reaction in life processes such as biological respiration, and in energy converting systems such as fuel cells. ORR in aqueous solutions occurs mainly by two pathways: the direct 4-electron reduction pathway from O2 to H2O, and the 2-electron reduction pathway from O2 to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ChemElectroChem
سال: 2019
ISSN: 2196-0216,2196-0216
DOI: 10.1002/celc.201901877