Publications by authors named "Ting-Yu Shuai"
Article Synopsis
- Fossil energy is running out and causing significant environmental issues, making hydrogen energy a promising alternative that’s clean and has high energy density, produced via water electrolysis using renewable sources.
- The electrolysis process includes two key reactions: the hydrogen evolution reaction at the cathode and the oxygen evolution reaction (OER) at the anode, which is complex due to a high energy barrier requiring efficient catalysts.
- Recent research on oxyhydroxide (MOOH) catalysts has focused on their two catalytic mechanisms and strategies to enhance their performance and stability, while also highlighting ongoing challenges and future directions for OER catalyst development.
Water electrolysis has become an attractive hydrogen production method. Oxygen evolution reaction (OER) is a bottleneck of water splitting as its four-electron transfer procedure presents sluggish reaction kinetics. Designing composite catalysts with high performance for efficient OER still remains a huge challenge.
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- Flexible rechargeable Zn-air batteries (FZABs) are promising for wearable electronics due to their lightweight and eco-friendly properties, but their performance is hindered by slow oxygen reactions at the air cathode.* -
- Enhancing the activity and stability of bifunctional catalysts is critical, with two main strategies being the use of powder-based and flexible self-supported air cathodes.* -
- The paper reviews recent advancements in catalyst structures, discusses strategies for improving catalyst synthesis, and highlights ongoing challenges in the field of FZABs.*
The development of efficient urea oxidation reaction (UOR) catalysts helps UOR replace the oxygen evolution reaction (OER) in hydrogen production from water electrolysis. Here, we prepared Fe-doped NiP/NiSe composite catalyst (Fe-NiP/NiSe-12) by using phosphating-selenizating and acid etching to increase the intrinsic activity and active areas. Spectral characterization and theoretical calculations demonstrated that electrons flowed through the Ni-P-Fe-interface-Ni-Se-Fe, thus conferring high UOR activity to Fe-NiP/NiSe-12, which only needed 1.
View Article and Find Full Text PDFA long-term goal of rechargeable zinc-air batteries (ZABs) has always been to design bifunctional electrocatalysts that are robust, effective, and affordable for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). It has become a feasible method to construct metal/metal oxide interfaces to achieve superior electrocatalytic performance for ORR and OER by enhanced charge transfer. In this study, Co/CoO heterojunctions were successfully prepared and encased in porous N-doped mesoporous carbon (Co/CoO@NC) via a simple condensation-carbonization-etching method.
View Article and Find Full Text PDFCompared with the traditional electrolysis of water to produce hydrogen, urea-assisted electrolysis of water to produce hydrogen has significant advantages and has received extensive attention from researchers. Unfortunately, urea oxidation reaction (UOR) involves a complex six-electron transfer process leading to high overpotential, which forces researchers to develop high-performance UOR catalysts to drive the development of urea-assisted water splitting. Based on the UOR mechanism and extensive literature research, this review summarizes the strategies for preparing highly efficient UOR catalysts.
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- Transition metal nitrides (TMNs) show promise as alternatives to precious metals like Pt and Ir in electrocatalysis due to their excellent performance, conductivity, and resistance to corrosion.
- Unlike carbon-based materials, which are prone to corrosion and instability, TMNs offer greater durability and stability in harsh conditions.
- The paper reviews the synthesis, catalytic mechanisms, and applications of TMNs in key reactions like hydrogen evolution (HER) and oxygen reduction (ORR), while also addressing their limitations and future research challenges.
Article Synopsis
- MXenes are advanced two-dimensional materials known for their impressive optical, electric, and magnetic properties, with over 30 different types due to various combinations of transition metals and C/N.
- This review covers the last five years of research on MXenes, focusing on their preparation methods (bottom-up and top-down) and their significant roles in electrocatalytic applications like hydrogen evolution and carbon dioxide reduction reactions.
- The study highlights that modifying MXenes by changing functional groups or combining them with other materials can enhance their electrocatalytic performance, emphasizing the need for environmentally friendly production methods, especially for MXene nitrides.