A5006763143- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Catalytic Processes in Materials Science
- CO2 Reduction Techniques and Catalysts
- Advanced battery technologies research
- Catalysis and Hydrodesulfurization Studies
- Fuel Cells and Related Materials
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Solar-Powered Water Purification Methods
Soochow University
2021-2025
Oxygen-vacancy-rich nickel hydroxide nanosheets as a multifunctional layer between Ir and Si toward enhanced solar hydrogen production in alkaline media.
Silicon semiconductor functionalized with molecular catalysts emerges as a promising cathode for photoelectrochemical (PEC) CO2 reduction reaction (CO2 RR). However, the limited kinetics and stabilities remains major hurdle development of such composites. We herein report an assembling strategy silicon photocathodes via chemically grafting conductive graphene layer onto surface n+ -p Si followed by catalyst immobilization. The covalently-linked effectively enhances photogenerated carriers...
Integrating nanostructured catalysts with semiconductors is a prevalent strategy for the design of photoelectrochemical (PEC) photocathodes toward CO2 reduction reaction (CO2RR). However, it still challenge to achieve high efficiency and selectivity due incompatible catalyst/semiconductor heterogeneous interface. Here, proposed that engineering oxygen vacancy in TiO2 interlayer plays multifunctional role boosting PEC activity CO2RR on Bi catalyst modified Si photocathode (denoted as...
Ni3S2 has been emerging as one of the most promising hydrogen evolution reaction (HER) catalysts because its moderate activity, exceptional electrical conductivity, well scalable methodologies, however, high...
Dissolved iron (Fe) species is an intriguing player in the overall alkaline water electrolysis (AWE) system, considered both as a poison that needs to be avoided and precursor...
Converting CO2 to value-added chemicals through a photoelectrochemical (PEC) system is creative approach toward renewable energy utilization and storage. However, the rational design of appropriate catalysts while being effectively integrated with semiconductor photoelectrodes remains considerable challenge for achieving single-carbon products high efficiency. Herein, we demonstrate novel sulfidation-induced strategy in situ grown sulfide-derived Ag nanowires on Si photocathode (denoted as...
Abstract Using silicon as a photocathode has long been considered an ideal pathway toward cost‐effective photoelectrochemical (PEC) solar hydrogen production. However, the trade‐off between charge transfer efficiency and stability severely restricts practical application of Si‐based PEC devices in alkaline media. Herein, facile thermo‐electrodeposition process to integrate gradient‐structuring Ni 3 S 2 (G‐Ni x O 2− ) layer simultaneously protect act catalyst Si photocathodes solutions is...
Abstract The sluggish oxygen evolution reaction (OER) kinetics and adverse charge transfer stability at the multi‐interfaces from Si to electrolyte severely impede application of photoanodes. Herein, vacancy (OV)‐rich NiFe‐layered hydroxides (NiFe‐OH) nanosheet arrays are vertically orientated on Ni‐protected photoanodes by a facile solvothermal method followed hot Fe ion‐exchange treatment. By virtue formation OVs NiFe‐OH nanosheets vertical contact between substrate, as‐prepared photoanode...
Monolithic integrated photoelectrochemical devices consisting of semiconductors and co-catalysts have always been restricted by the trade-off between light absorption catalytic activity upon frontside illumination. Herein, we proposed a facile strategy to spatio-selectively deposit Pt catalyst on top p-Si micro-pyramids, which not only enables substantial but also immensely boosts charge transport mass transfer. With help dark-field microscopy microscopic photocurrent mapping, it is revealed...
Abstract Silicon semiconductor functionalized with molecular catalysts emerges as a promising cathode for photoelectrochemical (PEC) CO 2 reduction reaction (CO RR). However, the limited kinetics and stabilities remains major hurdle development of such composites. We herein report an assembling strategy silicon photocathodes via chemically grafting conductive graphene layer onto surface n + ‐p Si followed by catalyst immobilization. The covalently‐linked effectively enhances photogenerated...
Photoelectrochemical (PEC) water splitting has been intensively studied as a sustainable approach to directly convert intermittent solar energy into storable hydrogen fuels. Its practical application, however, tethered by the trade-off between photoelectrode efficiency and stability. Herein, this work demonstrates facile strategy design highly efficient stable Si photocathodes utilizing reduced graphene oxide (rGO) multifunctional interlayer bridge Pt catalysts p-Si. The covalently grafted...
Self-supported Ni/NiO heterostructures with controllable ratios used in industrial alkaline water electrolysis (AWE) systems lead to an ultralow voltage of 1.79 V at 400 mA cm
Significant breakthroughs have recently been made in boosting the hydrogen evolution reaction (HER) of Pt-containing electrocatalysts; however, it is unclear whether they can withstand long-term operational durability under harsh industrial conditions, especially when driven by intermittent renewable energy. Here, a cathode was prepared brushing Pt–Ni solution onto Ni mesh (NM) (denoted as Pt–Ni/NM) and paired with NM anode to study its stability simulated conditions (30 wt. % KOH, 60 °C)....
Industrial alkaline water electrolysis (AWE) has been burdened with huge energy consumption due to the large overpotential and poor stability of catalysts for hydrogen evolution reaction (HER). Herein, we developed a hierarchical NiCoP/NiCo catalyst on Ni mesh (NCP/NC/Ni) via facile electrodeposition method, which exhibits remarkable HER performance. When pairing anode under industrial conditions (30 wt% KOH, 85 ℃), AWE device can give steady current density 500 mA cm-2 at 1.88 V 30 days,...