Charlie Wade Novels

: Assembling a heterostructure is an effective strategy for enhancing the electrocatalytic activity of hybrid materials. Herein, CoFe-layered double hydroxide and Co-metal−organic framework (CoFe-LDH/Co-MOF) hollow heterostructure nanorod arrays are synthesized. First, [Co(DIPL)(H3BTC)(H2O)2]n [named as Co-MOF, DIPL = 2,6-di(pyrid-4-yl)-4-phenylpyridine, H3BTC = 1,3,5-benzenetricarboxylic acid] crystalline materials with a uniform hollow structure were prepared on the nickel foam. The CoFe-LDH/Co-MOF composite perfectly inherits the original hollow nanorod array morphology after the subsequent electrodeposition process. Optimized CoFe-LDH/Co-MOF hollow heterostructure nanorod arrays display excellent performance in oxygen evolution reaction (OER) with ultralow ov erpotentials of 215 mV to deliver current densities of 10 mA cm−2 and maintain the electrocatalytic activity for a duration as long as 220 h, ranking it one of the non-noble metal-based electrocatalysts for OER. Density func...

(Abstract not found) Download PDF: https://soald.eu.org/BSmU6y

: Carbon-based inorganic perovskite solar cells (CIPSCs) with promising efficiency, good thermal stability, and low cost have emerged as important candidates for photovoltaic device commercialization. However, the relatively poor phase stability of CsPbI3 perovskite in humid conditions and the mismatched energy level at the perovskite/carbon interface hinder the efficiency and stability of CsPbI3 C-IPSCs. Herein, a facile molecular modification strategy is employed to solve the current issues using a multifunctional molecule, ethyl thioacetate (ES). Posttreatment enhances the hydrophobicity of CsPbI3 films due to the relatively small polarity of ES molecules. The C
O and C−S groups in ES form Lewis acid−base coordination interactions with uncoordinated Pb2+ in pe rovskite, effectively passivating surface defects in perovskite films. In addition, ES treatment optimizes the energy level arrangement, facilitating hole extraction at the perovskite/carbon interface. Thus, ES post-treatmen...