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Researchers develop new perovskite solar cells that set efficiency record

Researchers develop new perovskite solar cells that set efficiency record
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Jie Wu , Chinese Academy Of Sciences , Ningbo Institute Of Materials Technology , Ningbo Institute , Materials Technology , Chinese Academy , Anchored Self , Assembled Molecules , Larger Dipole Moments , Efficient Inverted Perovskite Solar Cells , Excellent Stability , Advanced Materials ,

"High Entropy Alloys Enable Durable and Efficient Lithium-Mediated CO2 " by Liang Sun, Jodie A. Yuwono et al.

Designing electrocatalysts with high activity and durability for multistep reduction and oxidation reactions is challenging. High-entropy alloys (HEAs) are intriguing due to their tunable geometric and electronic structure through entropy effects. However, understanding the origin of their exceptional performance and identifying active centers is hindered by the diverse microenvironment in HEAs. Herein, NiFeCoCuRu HEAs designed with an average diameter of 2.17 nm, featuring different adsorption capacities for various reactants and intermediates in Li-mediated CO2 redox reactions, are introduced. The electronegativity-dependent nature of NiFeCoCuRu HEAs induces significant charge redistribution, shifting the d-band center closer to Fermi level and forming highly active clusters of Ru, Co, and Ni for Li-based compounds adsorptions. This lowers energy barriers and simultaneously stabilizes LiCO2 and LiCO3+CO intermediates, enhancing the efficiency of both CO2 reduction and Li2CO3 decompo ....

Excellent Stability , High Entropy Alloys , I Mediated Co Redox Reactions 2 ,