Non-precious iron-based catalysts (Fe–NCs) require high active site density to meet the performance targets as cathode catalysts in proton exchange membrane fuel cells. Site density is generally limited to that achieved at a 1–3wt%(Fe) loading due to the undesired formation of iron-...
Rational design of common transition metal–nitrogen–carbon catalysts for oxygen reduction reaction in fuel cells. Nano Energy 30, 443–449 (2016). CAS Google Scholar Mehmood, A. et al. High loading of single atomic iron sites in Fe–NC oxygen reduction catalysts for proton exchange membrane...
Transition-metal single-atom catalysts present extraordinary activity per metal atomic site, but suffer from low metal-atom densities (typically less than 5wt% or 1at.%), which limits their overall catalytic performance. Here we report a general method for the synthesis of single-atom catalysts ...
Dr. Zhang's research mainly focuses on structure characterization of functional oxide materials at the atomic scale by transmission electron microscope. Dr. Hui Wu received his B.E. degree in 2004 and Ph.D. degree in 2009 from Tsinghua University. After postdoc research in Prof. Yi Cui group...
direction highlighted in (b); (d) HAADF and LAADF images and the corresponding EDS elemental maps of the HEA-NPs; (e) LAADF images from red boxed regions in (d) and corresponding atomic ratio distribution; (f) schematic illustration of the reduction of oxidized HEA-NPs at 400°C [79,...
direction highlighted in (b); (d) HAADF and LAADF images and the corresponding EDS elemental maps of the HEA-NPs; (e) LAADF images from red boxed regions in (d) and corresponding atomic ratio distribution; (f) schematic illustration of the reduction of oxidized HEA-NPs at 400°C [79,...
Regardless of high cycles or low cycles, a fatigue failure needs to successively experience crack initiation, crack propagation, and ultimate failure, just like material fracture under monotonic loading. Accordingly, both high-cycle fatigue and low-cycle fatigue may be characterized by the LEFM method...
In this work, we report on a microwave technique based on the use of a coplanar waveguide resonator (CPWR) that is suitable for the study of very small IBS single crystals, and we show how the absolute values of 𝜒𝑎𝑐χac can be obtained for thin platelets (Section 2). It is ...
an increase in applied pressure, and the 𝑉/𝑉0V/V0 ratio of volume compression under pressure is much smaller than the 𝑎/𝑎0a/a0 ratio of lattice parameter compression, indicating that the inter-atomic distance becomes smaller and the electronic interaction is enhanced under high ...
Highway Engineering Contents Measurement and Back-Calculation of Effective Thermal Conductivity of Unbound Aggregates ... 17 DIC Technique to Investigate Self-Healing Properties of Ferrite-Filled Open-Graded Friction Course (OGFC) Asphalt Mixture ......