A5024235028- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Electrochemical Analysis and Applications
- Semiconductor materials and devices
- Water Quality Monitoring and Analysis
- Catalytic Processes in Materials Science
- CO2 Reduction Techniques and Catalysts
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- Covalent Organic Framework Applications
- Advanced Photocatalysis Techniques
- Mesoporous Materials and Catalysis
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
Xiamen University
2022-2025
Collaborative Innovation Center of Chemistry for Energy Materials
2022-2024
Guangdong Pharmaceutical University
2019-2020
Understanding the catalysis mechanism of sluggish oxygen evolution reaction (OER) involved in water splitting is vital importance for development clean hydrogen energy. Earth-abundant transition-metal (oxy)hydroxide with low cost and high performance one most promising OER catalysts. These catalysts often dynamically heterogeneously transform from inactive pre-catalysts into active phases under operation conditions, thus, operando/in situ method needed direct observation. Herein, using Raman...
One of the most successful approaches for balancing high stability and activity water oxidation in alkaline solutions is to use amorphous crystalline heterostructures. However, due lack direct evidence at molecular level, nano/micro processes heterostructure electrocatalysts, including self-reconstruction reaction pathways, remain unknown. Herein, Leidenfrost effect assisted electrospray approach combined with phase separation was used first time create NiO x /crystalline α-Fe2O3 (a-NiO...
Abstract Highly active and stable oxygen evolution reaction (OER) catalysts are crucial for the large‐scale application of proton exchange membrane water electrolyzers. However, dynamic reconfiguration catalyst surface structure centers is still undefined, which greatly hinders development efficient OER catalysts. Herein, we report an Ir 0.3 Ru 0.7 O x /C with a facile low‐temperature synthesis route, can reach 10 mA cm −2 at overpotential 217 mV Tafel slope as low 39.4 dec −1 , yields mass...
Developing Earth-abundant, highly efficient, and anti-corrosion electrocatalysts to boost the oxygen evolution reaction (OER), reduction (ORR), hydrogen (HER) for Zn–air battery (ZAB) overall water splitting is imperative. In this study, a novel process starting with Cu2O cubes was developed fabricate hollow NixCo1−xSe nanocages as trifunctional OER, ORR, HER reasonable formation mechanism proposed. The Ni0.2Co0.8Se exhibited higher OER activity than its counterparts low overpotential of 280...
A facile strategy is developed to create a MIL-88A/Ni(OH)<sub>2</sub> heterostructure, where the interfacial charge transfer significantly boosted OER performance.
The production of ecologically compatible fuels by electrochemical water splitting is highly desirable for modern industry. Zhang-Rice singlet well known the superconductivity high-temperature superconductors cuprate, but rarely an catalyst. Herein, we observe two steps surface reconstruction from initial catalytic inactive Cu1+ in hydrogen treated Cu2O to Cu2+ state and further active during oxygen evolution reaction splitting. catalyst exhibits a superior activity stability efficient rival...
Optimized evolution of active species and facilitated O–O coupling on MnO 2 supported IrO x was revealed by in situ spectroscopy.
Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer...
Developing efficient oxygen evolution reaction (OER) electrocatalysts can greatly advance the commercialization of proton exchange membrane (PEM) water electrolysis. However, unclear and disputed mechanism structure-activity relationship OER pose significant obstacles. Herein, active site intermediate for on AuIr nanoalloys are simultaneously identified correlated with activity, through integration in situ shell-isolated nanoparticle-enhanced Raman spectroscopy X-ray absorption spectroscopy....
Abstract Developing low‐iridium electrocatalysts combined with high efficiency and longevity for oxygen evolution reaction (OER) in proton exchange membrane (PEM) water electrolysis remains challenging the hydrogen economy. Here, an anodic electro‐oxidation approach is reported to fabricate iridium (Ir) dope MnO 2 gas diffusion electrodes, which exhibited remarkable stability of over 1650 h at 100 mA cm −2 a record‐high number 2.9 × 10 8 by considering Ir leaching. The optimized catalyst low...
Nickel–iron-based catalysts are recognized for their high efficiency in the oxygen evolution reaction (OER) under alkaline conditions, yet underlying mechanisms that drive superior performance remain unclear. Herein, we revealed molecular OER mechanism and structure-intermediate-performance relationship of on a phosphorus-doped nickel–iron nanocatalyst (NiFeP). NiFeP exhibited exceptional activity stability with an overpotential only 210 mV at 10 mA cm–2 1 M KOH cell voltage 1.68 V A anion...
Advancements in fuel cells and water electrolyzers have significantly bolstered the utilization of hydrogen energy. Notably, oxidation reduction processes oxygen at electrode—termed evolution reaction (OER) (ORR)—manifest sluggish kinetics, thus requiring noble metals as catalysts, which considerably impedes system efficiency cost. The imperative for enhancing rates diminishing overpotential necessitates development effective strongly depends on mechanistic understanding these reactions...
Electrocatalytic CO2 reduction reaction (CO2RR) for CH4 production presents a promising strategy to address carbon neutrality, and the incorporation of second metal has been proven effective in enhancing catalyst performance. Nevertheless, there remains limited comprehension regarding fundamental factors responsible improved Herein, critical role Pd electrocatalytic on Cu-based catalysts revealed at molecular level using situ surface-enhanced Raman spectroscopy (SERS). A “borrowing” SERS...