A5023491714- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Advancements in Battery Materials
- Catalytic Processes in Materials Science
- Advanced Battery Materials and Technologies
- Advanced Photocatalysis Techniques
- Machine Learning in Materials Science
- Ionic liquids properties and applications
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Semiconductor materials and devices
- Advancements in Solid Oxide Fuel Cells
- Advanced Nanomaterials in Catalysis
- Ammonia Synthesis and Nitrogen Reduction
- Extraction and Separation Processes
- Advanced Thermoelectric Materials and Devices
- Advanced Battery Technologies Research
Hainan University
2022-2025
Huazhong University of Science and Technology
2018-2022
Abstract The development of high‐performance oxygen reduction reaction (ORR) catalysts derived from non‐Pt group metals (non‐PGMs) is urgent for the wide applications proton exchange membrane fuel cells (PEMFCs). In this work, a facile and cost‐efficient supramolecular route developed making non‐PGM ORR catalyst with atomically dispersed Fe‐N x /C sites through pyrolyzing metal‐organic polymer coordinative hydrogel formed between Fe 3+ α‐L‐guluronate blocks sodium alginate (SA). High‐angle...
Abstract An effective and universal strategy is developed to enhance the stability of non‐noble‐metal M–N x /C catalyst in proton exchange membrane fuel cells (PEMFCs) by improving bonding strength between metal ions chelating polymers, i.e., poly(acrylic acid) (PAA) homopolymer acid–maleic (P(AA‐MA)) copolymer with different AA/MA ratios. Mössbauer spectroscopy X‐ray absorption (XAS) reveal that optimal P(AA‐MA)–Fe–N a higher Fe 3+ –polymer binding constant possesses longer FeN bonds...
In this work, monodisperse core/shell Cu/In2O3 nanoparticles (NPs) were developed to boost efficient and tunable syngas formation via electrochemical CO2 reduction for the first time. The efficiency composition of production on carbon-supported catalysts are highly dependent In2O3 shell thickness (0.4–1.5 nm). As a result, wide H2/CO ratio (4/1 0.4/1) was achieved by controlling applied potential (from −0.4 −0.9 V vs reversible hydrogen electrode), with Faraday larger than 90%. Specifically,...
The sluggish kinetics of lithium polysulfides (LiPS) transformation is recognized as the main obstacle against practical applications lithium–sulfur (Li–S) battery. Inspired by molybdoenzymes in biological catalysis with stable Mo–S bonds, porous Mo–N–C nanosheets atomically dispersed Mo–N2/C sites are developed a S cathode to boost LiPS adsorption and conversion for Li–S batteries. Thanks its high intrinsic activity coordination structure, rate capability cycling stability S/Mo–N–C greatly...
Binary single-atom catalysts (BSACs) have demonstrated fascinating activities compared to single atom (SACs) for oxygen reduction reaction (ORR) and evolution (OER). Notably, Fe SACs is one of the most promising ORR electrocatalysts, further revealing synergistic effects between other 3d transition metals (M) FeM BSACs are very important enhance bifunctional performance. Herein, density functional theory (DFT) calculations first adapted demonstrate role various on activity sites, a notable...
Multimetallic alloys have demonstrated promising performance for the application of metal-air batteries, while it remains a challenge to design multimetallic single-atom catalysts (MM-SACs). Herein, metal-C3N4 and nitrogen-doped carbon are employed as cornerstones synthesize MM-SACs by general two-step method, inherent features atomic dispersion strong electronic reciprocity between sites been verified. The trimetallic FeCoZn-SACs quatermetallic FeCoCuZn-SACs both found deliver superior...
Abstract Exploiting platinum‐group‐metal (PGM)‐free electrocatalysts with remarkable activity and stability toward oxygen reduction reaction (ORR) is of significant importance to the large‐scale commercialization proton exchange membrane fuel cells (PEMFCs). Here, a high‐performance anti‐Fenton cobalt–nitrogen–carbon (Co–N–C) catalyst reported via employing double crosslinking (DC) hydrogel strategy, which consists chemical between acrylic acid (AA) acrylamide (AM) copolymerization metal...
Abstract Plasma etching treatment is an effective strategy to improve the electrocatalytic activity, but improvement mechanism still unclear. In this work, a nitrogen‐doped carbon nanotube‐encased iron nanoparticles (Fe@NCNT) catalyst synthesized as model catalyst, followed by plasma with different parameters. The activity of revealed combining physicochemical characterizations and electrochemical results. As result, highly active metal–nitrogen species introduced nitrogen are recognized...
Carbon‐supported metal single‐atom catalysts (M‐SACs) are promising oxygen reduction reaction (ORR) catalysts. Their ORR activity and selectivity significantly affected by the heteroatoms that coordinate central atoms. Previous reports found oxygen‐coordinated M‐SACs promoted a 2e‐ rather than 4e‐ is more desirable for fuel cells. Herein, we report first time capable of promoting in acid media. We prepared Cr(acac)‐NC catalyst with Cr atom coordinated two O The not only exhibits excellent...
Carbon‐supported metal single‐atom catalysts (M‐SACs) are promising oxygen reduction reaction (ORR) catalysts. Their ORR activity and selectivity significantly affected by the heteroatoms that coordinate central atoms. Previous reports found oxygen‐coordinated M‐SACs promoted a 2e‐ rather than 4e‐ is more desirable for fuel cells. Herein, we report first time capable of promoting in acid media. We prepared Cr(acac)‐NC catalyst with Cr atom coordinated two O The not only exhibits excellent...
With high theoretical specific density, low cost, and non-toxicity, Li-S batteries are regarded as a promising candidate for next-generation energy storage systems. However, the shuttling of soluble Li polysulfides (LiPSs) results in self-discharge rapid capacity degradation. Herein, nitrogen-doped hierarchical porous carbon with embedded highly dispersed vanadium (v)-Nx sites (V-N-C) is developed high-performance battery cathode first time. The metal-organic polymer supramolecule structure...
Abstract: Environment-friendly energy storage and conversion technologies, such as metal–air batteries fuel cells, are considered promising approaches to address growing environmental concerns. The oxygen reduction reaction (ORR) is the core of renewable technology plays an irreplaceable role in this fundamental issue. However, complex multi-reaction process ORR presents a bottleneck that limits efforts accelerate its kinetics. Traditionally, Pt Pt-based catalysts regarded good choice...
Carbon nanosheet-supported CrN nanoparticles render excellent ORR activity in acidic media and long-term stability natural seawater Zn–air batteries.
Dual‐single‐atom catalysts (DSACs) are the next paradigm shift in single‐atom because of enhanced performance brought about by synergistic effects between adjacent bimetallic pairs. However, there few methods for synthesizing DSACs with precise structures. Herein, a pre‐coordination strategy is proposed to precisely synthesize library DSACs. This ensures selective and effective coordination two metals via phthalocyanines specific sites, such as –F– –OH–. Subsequently, in‐situ confinement...
Abstract Direct seawater zinc‐air batteries (S‐ZABs), with their inherent properties of high energy density, intrinsic safety, and low cost, present a compelling avenue for the development storage technology. However, presence chloride ions in poses challenges to air electrode, resulting sluggish reaction kinetics poor stability oxygen reduction (ORR). Herein, Fe atomic clusters (ACs) decorated single‐metal atoms (SAs) catalyst (Fe SA ‐Fe AC /NC) is prepared using plasma treatment strategy....
Fe-N-C represents the most promising non-precious metal catalysts (NPMCs) for oxygen reduction reaction (ORR) in fuel cells, but often suffers from poor stability acid due to dissolution of sites and oxidation resistance carbon substrates. In this work, silicon-doped iron-nitrogen-carbon (Si/Fe-N-C) were developed by situ silicon doping metal-polymer coordination. It was found that Si could not only promote density Fe-Nx /C active also elevated content graphitic through catalytic...