Oriented Assembly of 2D Metal‐Pyridylporphyrinic Framework to Regulate the Redox Kinetics in Li−S Batteries

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Developing the highly efficient catalysts is a great challenge for accelerating redox reactions in Li−S batteries. Inspired by single‐atom and metalloproteins, it makes full use of advantages metal–organic frameworks (MOFs) as electrocatalysts. Herein, series 2D metal‐bonded metalloporphyrin MOFs are prepared with 5,10,15,20‐tetrakis(4‐pyridyl) cobalt porphyrin (CoTPyP) building blocks transition metals (M═Mn, Fe, Co, Ni, Cu) nodes, respectively. The crystalline structures bimetallic confirmed UV–vis spectra X‐ray diffraction analyses. According to DFT calculation, peripheral metal nodes optimize electronic state Co core. Especially, CoTPyP‐Mn facilitates cleavage S−S bond from both ends promotes their conversion kinetics through Co−S Li−N bonds. cells show initial specific capacity 1339 mA h g −1 at 0.2 C. decay rate only 0.0442% per cycle after 1000 cycles 2 This work achieves rational control central d electron regulation enriches application

Language: Английский

Engineering Mo–O Covalency via P-Doping for Enhanced Hydrogen Evolution

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: May 3, 2025

Language: Английский