Ever‐growing demands for rechargeable zinc–air batteries (ZABs) call for efficient
bifunctional electrocatalysts. Among various electrocatalysts, single atom catalysts (SACs) …

Hydrogen energy-based electrochemical energy conversion technologies offer the promise
of enabling a transition of the global energy landscape from fossil fuels to renewable energy …

Hydrogen energy is an important cornerstone for realizing net-zero and sustainable
development plans. The successful construction of a hydrogen society requires …

Fe–N–C catalysts are the most promising platinum group metal-free oxygen-reduction
catalysts, but they suffer from a low density of active metal sites and the so-called activity …

Single‐atom catalysts (SACs) have attracted extensive interest to catalyze the oxygen
reduction reaction (ORR) in fuel cells and metal–air batteries. However, the development of …

Nitrogen-coordinated single atom iron sites (FeN4) embedded in carbon (Fe–N–C) are the
most active platinum group metal-free oxygen reduction catalysts for proton-exchange …

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 …

Fe–N–C catalysts offer excellent performance for the oxygen reduction reaction (ORR) in
alkaline media. With a view toward boosting the intrinsic ORR activity of Fe single‐atom sites …

The development of Fe single-atom catalysts is greatly impeded by their lower oxygen
reduction reaction (ORR) performance in acid electrolytes when compared with Pt/C …

Fine‐tuning single‐atom catalysts (SACs) to surpass their activity limit remains challenging
at their atomic scale. Herein, we exploit p‐type semiconducting character of SACs having a …