A5036391526- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- CO2 Reduction Techniques and Catalysts
- Fuel Cells and Related Materials
- Supercapacitor Materials and Fabrication
- Advanced oxidation water treatment
- Membrane Separation Technologies
- Ionic liquids properties and applications
- Advanced Photocatalysis Techniques
- Acute Kidney Injury Research
- Conducting polymers and applications
- MXene and MAX Phase Materials
- Solar-Powered Water Purification Methods
- Machine Learning in Materials Science
- Graphene research and applications
- Catalytic Processes in Materials Science
- Advanced Thermoelectric Materials and Devices
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Solar Thermal and Photovoltaic Systems
Aalto University
2021-2024
Beijing University of Chemical Technology
2016-2019
Beijing Advanced Sciences and Innovation Center
2018
North China Electric Power University
2015
Tungsten carbide is one of the most promising electrocatalysts for hydrogen evolution reaction, although it exhibits sluggish kinetics due to a strong tungsten-hydrogen bond. In addition, tungsten carbide's catalytic activity toward oxygen reaction has yet be reported. Here, we introduce superaerophobic nitrogen-doped nanoarray electrode exhibiting high stability and as well driving efficiently in acid. Nitrogen-doping structure accelerate gas release from electrode, realizing current...
Abstract Ternary NiCoFe‐layered double hydroxide (NiCo III Fe‐LDH) with Co 3+ is grafted on nitrogen‐doped graphene oxide (N‐GO) by an in situ growth route. The array‐like colloid composite of NiCo Fe‐LDH/N‐GO used as a bifunctional catalyst for both oxygen evolution/reduction reactions (OER/ORR). array has 3D open structure less stacking LDHs and enlarged specific surface area. hierarchical design novel material chemistry endow high activity propelling O 2 redox. By exposing more amounts Ni...
Hydrogen evolution reaction (HER), as an effective method to produce green hydrogen, is greatly impeded by inefficient mass transfer, i.e., bubble adhesion on electrode, dispersion in the vicinity of and poor dissolved H2 diffusion, which results blocked electrocatalytic area large concentration overpotential. Here, we report a superaerophilic/superaerophobic (SAL/SAB) cooperative electrode efficiently promote transfer asymmetric Laplace pressure accelerate diffusion through reducing...
Abstract Introducing oxygen vacancies to metal oxide materials would improve their catalytic activity but usually needs reductive reagents (e.g., H 2 ) and high temperatures >600 °C), which is unsafe, complex, time consuming. Herein, a fast (30 s) facile (operated at ambient conditions) flame‐engraved method used introduce abundant well‐defined hexagonal cavities with (110) edges nickel–iron layered double hydroxides (NiFe‐LDH). Abundant vacancies, lower coordination numbers,...
Ultrathin 2D metal alloy nanomaterials have great potential applications but their controlled syntheses are limited to few noble based systems. Herein NixCo1−x nanosheets with ultrathin (sub-3 nm) single-crystalline structure synthesized through a topochemical reduction method. Moreover, the optimized composition Ni0.6Co0.4 array exhibits excellent performances for hydrazine oxidation reaction and direct fuel cells. nanomaterials, like graphene or MoS2, garnered tremendous attentions due...
Oxygen reduction efficiency holds the key for renewable energy technologies including fuel cells and metal-air batteries, which involves coupling diffusion-reaction-conduction processes at interface of catalyst/electrolyte, thus rational electrode design facilitating mass transportation stands as a issue fast oxygen reaction (ORR). Herein, we report Janus with asymmetric wettability prepared by partly modifying aerophobic nitrogen doped carbon nanotube arrays polytetrafluoroethylene (PTFE)...
Developing highly efficient and robust electrocatalysts for oxygen evolution reaction (OER) is critical to renewable energy technologies. Here, we report an effective strategy enhance the OER activity of a perovskite electrocatalyst through improving electrical conductivity introduced by structural transition. La0.7Sr0.3Fe1−xNixO3−δ (denoted as LSFN‐x) with increasing Ni content found crystallize in higher symmetry structure exhibit improved catalytic performance. The optimized cubic...
Fast and stable production of hydrogen peroxide (H2O2) through electrochemical pathways is crucial for wastewater treatment applications. With this objective, herein, we report an integrated superaerophilic electrode composed atomically dispersed Ni–O–C site-enriched carbon nanosheets (IS-NiOC electrode) oxygen reduction to produce H2O2. Both experimental theoretical results have proven that sites enable a low overpotential (260 mV at 0.1 mA cm–2) high selectivity (>90% 0.0–0.5 V vs...
A N-doped porous carbon coated cobalt oxide nanoarray electrode was prepared with excellent bifunctional oxygen catalytic performance, and demonstrated good stability high efficiency in a Zn–air battery.
The lithium–sulfur (Li–S) battery is considered as a promising chemistry for next-generation energy storage on the merits of low cost and high density. However, sluggish redox kinetics shuttling effect lithium polysulfides (LiPSs), especially at sulfur loading, result in utilization, Coulombic efficiency, short cycle life. Herein, an entangled N-doped carbon nanotube array with encapsulated Co nanoparticles has been constructed used efficient host cathode featuring both physical chemical...
Bi has drawn attention in catalyzing the electrochemical CO2-to-formate conversion due to promising selectivity and low cost, but process suffers from activity. Herein, we introduce nitrogen-doped carbon (NC) support with hydrophobicity modification enhance activity of a binder-free Bi2O3 electrode. Formate partial current on NC supported electrode almost doubles compared unmodified support. Furthermore, polytetrafluoroethylene (PTFE) significantly extends stability by diminishing flooding....
This study investigated the removal of sulfonated humic acid (SHA) from water through a hybrid electrocoagulation–ultrafiltration treatment process. The effects major operating parameters including electrocoagulation time, current density, and initial pH on performance were evaluated. increase in density time as well decrease improved SHA efficiency. conditions process optimized Box–Behnken design to maximize removal. optimum for included 7 min, 10 mA/cm2, 5. Effective was further achieved...
Developing efficient electrocatalysts of elements that are abundant on earth crust is crucial for green hydrogen generation technologies. In particular, the oxygen evolution reaction (OER) under alkaline plays a key role in anion exchange membrane (AEM) electrolyzer to produce but suffers from low kinetic. Herein, nickel oxide quantum dots with highly uniform size distribution ultrathin amorphous carbon nanosheets (NiO dots/a-carbon) were successfully prepared by one-step method. Introducing...
The fabrication of cost effective and efficient electrocatalysts with functional building blocks to replace noble metal ones is great importance for energy related applications yet remains a challenge. Herein, we report the hierarchical structure containing CNTs/graphene/transition-metal hybrids (h-NCNTs/Gr/TM) excellent bifunctional oxygen electrocatalytic activity. synthesis was rationally designed by growth shorter nitrogen-doped CNTs (S-NCNTs) on longer NCNTs arrays (L-NCNTs), while...
In this work, we present a supramolecular template-derived synthesis approach combined with carbon electronic structure tailoring strategy to prepare N-doped (NC) nanosheets delicately tuned nitrogen dopant levels and types for selective CO2 electrocatalytic reduction. By method, the NC are able electrochemically reduce CO an unprecedentedly superior Faradaic efficiency (FE) of 92% at moderate overpotential as low −0.36 V showed great long-term stability remnant FECO around 85% after 10 h...
SnO
Abstract Fast and stable production of hydrogen peroxide (H 2 O ) through electrochemical pathways is crucial for wastewater treatment applications. With this objective, herein we report an integrated superaerophilic electrode composed atomically dispersed Ni-O-C sites enriched carbon nanosheets (IS-NiOC electrode) oxygen reduction to produce H . Both experimental theoretical results have proven that enable a low overpotential (260 mV at 0.1 mA cm − high selectivity (> 90% 0.0 ~ 0.5 V vs....