Search results
26 gru 2020 · Guan et al. proposed a metamaterial absorber based on circular split rings that consisted of varactors and PIN diodes and demonstrated a tunable frequency band from 2.8 to 4.95 GHz with an ...
13 sty 2014 · Wei Li et al. demonstrated an ultra-broardband microwave hybrid absorber which is integrating non-planar MTM with MAM (magnetic absorbing materials) in [21]. This absorber shows 90%...
15 sty 2014 · Here, we propose a two-layer hybrid absorber consisting of a non-planar metamaterial (MM) and a magnetic microwave absorbing material (MAM). The non-planar MM using magnetic MAMs instead of dielectric substrates shows good low frequency absorption and low reflection across a broad spectrum.
12 lip 2020 · Abstract. Zinc–air batteries deliver great potential as emerging energy storage systems but suffer from sluggish kinetics of the cathode oxygen redox reactions that render unsatisfactory cycling lifespan.
Abstract. Among various electrocatalysts, high entropy materials (HEMs) have attracted great attention due to the distinctive designing concept and unique properties with captivating electrocatalytic activity and stability. To date, HEMs have been a new family of advanced electrocatalysts in the research field of water electrolysis.
1 mar 2020 · These Si 2 N 2 O ceramics were fabricated from oxidized amorphous silicon nitride powder using Li 2 CO 3 as a sintering aid by vacuum sintering at 1650 • C for 2 h. ...
27 sie 2024 · The entropy-increased doping of LMO results in improved rate capacity and cycling stability when tested in non-aqueous Li metal coin cell configuration, making it suitable for use as positive ...
