A5000957995- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Chalcogenide Semiconductor Thin Films
- Machine Learning in Materials Science
- Supercapacitor Materials and Fabrication
- Quantum Dots Synthesis And Properties
Hunan University
2021-2025
State Key Laboratory of Chemobiosensing and Chemometrics
2023
Abstract Electrochemical H 2 O production through the 2‐electron oxygen reduction reaction (ORR) is a promising alternative to energy‐intensive anthraquinone process. Herein, by simultaneously regulating coordination number of atomically dispersed cobalt sites and nearby functional groups via one‐step microwave thermal shock, highly selective active CoNC electrocatalyst for electrosynthesis that exhibits high selectivity (91.3%), outstanding mass activity (44.4 A g −1 at 0.65 V), large...
Abstract Selective two-electron (2e − ) oxygen reduction reaction (ORR) offers great opportunities for hydrogen peroxide (H 2 O electrosynthesis and its widespread employment depends on identifying cost-effective catalysts with high activity selectivity. Main-group metal nitrogen coordinated carbons (M-N-Cs) are promising but remain largely underexplored due to the low metal-atom density lack of understanding in structure-property correlation. Here, we report using a nanoarchitectured Sb S 3...
Graphene-supported single-atom catalysts (SACs) are promising alternatives to precious metals for catalyzing the technologically important hydrogen evolution reaction (HER), but their performances limited by low intrinsic activity and insufficient mass transport. Herein, a highly HER-active graphene-supported Co-N-C SAC is reported with unique design features in morphology of substrate microenvironment single metal sites: i) crumpled scrolled graphene circumvents issues encountered stacked...
Metal- and nitrogen-doped nanocarbons (M-N-Cs) are promising alternatives to precious metals for catalyzing electrochemical energy conversion processes. However, M-N-Cs synthesized by high-temperature pyrolysis frequently suffer from compositional heterogeneity with the simultaneous presence of atomically dispersed M-Nx sites crystalline metal nanoparticles (NPs), which hinders identification active rational optimization in performance. Herein, a universal efficient strategy is reported...
Abstract Dispersing atomic metals on substrates provides an ideal method to maximize metal utilization efficiency, which is important for the production of cost-effective catalysts and atomic-level control electronic structure. However, due high surface energy, individual single atoms tend migrate aggregate into nanoparticles during preparation catalytic operation. In past few years, various synthetic strategies based ultrafast thermal activation toward effective single-atom (SACs) have...
Site density and turnover frequency are the two fundamental kinetic descriptors that determine oxygen reduction activity of iron-nitrogen-carbon (Fe-N-C) catalysts. However, it remains a grand challenge to simultaneously optimize these parameters in single Fe-N-C catalyst. Here we show treating typical catalyst with ammonium iodine (NH4I) vapor via one-step chemical deposition process not only increases surface area porosity (and thus enhanced exposure active sites) etching effect in-situ...
Site density and turnover frequency are the two fundamental kinetic descriptors that determine oxygen reduction activity of iron‐nitrogen‐carbon (Fe−N−C) catalysts. However, it remains a grand challenge to simultaneously optimize these parameters in single Fe−N−C catalyst. Here we show treating typical catalyst with ammonium iodine (NH4I) vapor via one‐step chemical deposition process not only increases surface area porosity (and thus enhanced exposure active sites) etching effect in‐situ...
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