Highly active and durable triple conducting composite air electrode for low-temperature protonic ceramic fuel cells

Engineering the oxygen-evolution activity by changing the A-site rare-earth elements in RSr3Fe1.5Co1.5O10−δ (R = La, Nd, Pr) Ruddlesden–Popper perovskites

“…Addressing the overuse of fossil fuels and associated environmental issues, various electrochemical energy storage and conversion systems, such as water splitting, 1 fuel cells, 2,3 and rechargeable metal–air batteries, 4 are urgently required. The OER, referring to an electrochemical water oxidation pathway, plays a significant role in the above-mentioned energy and chemical transformation processes, while its sluggish reaction kinetics largely restricts the overall efficiency of these electrochemical systems.…”

First‐principles studies on physical properties for new half‐metallic perovskites AFeO3 (A = Ca, Sr, Ba): Spintronics and energy harvesting applications

“…The present work, structural, opto-electronic, as well as magnetic aspects of AFeO 3 (A = Ca, Sr, Ba) perovskites have been approved using first-principles calculations within Full Potential Linearized Augmented Plane-Wave (FP-LAPW) methods [36]. The convergence of energy/charge with the selfconsistent field is done by PBE-GGA to find out optimized electronic structure while to find out enhanced optoelectronic results modified Becke Johnson (mBJ) potential has been utilized because PBE-GGA underestimates the band gap results [37][38][39] hence to attain improved band gap results TB-mBJ potential has been utilized. Basis function expansion have been done up to R MT K MAX = 7.0 to attain convergence of energy and charge.…”

Niobium Boride/Graphene Directing High-Performance Lithium–Sulfur Batteries Derived from Favorable Surface Passivation

“…To address environmental pollution and the energy crisis, researchers are continuously developing efficient energy storage and conversion systems such as batteries, supercapacitors, and fuel cells. − Among them, affordable and environmentally friendly rechargeable batteries have found wide-ranging utilization in energy storage applications. − Lithium–sulfur (Li–S) batteries have attracted considerable interest as a highly promising energy storage solution for the future. , This is primarily due to their high theoretical energy density of 2600 Wh kg –1 and impressive specific capacity of 1675 mAh g –1 , environmental compatibility, and the abundance of elemental S . Nevertheless, the practical implementation of energy storage systems using Li–S batteries still faces challenges and limitations, , especially related to the movement of soluble LiPS intermediates, which leads to the decay of capacity and is a major challenge.…”