A5039902645- Fuel Cells and Related Materials
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Membrane-based Ion Separation Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- Advanced Battery Technologies Research
- Caching and Content Delivery
- Advanced Battery Materials and Technologies
- Advancements in Solid Oxide Fuel Cells
- Covalent Organic Framework Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Membrane Separation and Gas Transport
- Wastewater Treatment and Nitrogen Removal
- Advancements in Battery Materials
- Advanced oxidation water treatment
- Conducting polymers and applications
- CO2 Reduction Techniques and Catalysts
- Catalytic Alkyne Reactions
- Carbon Dioxide Capture Technologies
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Catalysis and Hydrodesulfurization Studies
- Food Waste Reduction and Sustainability
China Agricultural University
2024-2025
Wichita State University
2016-2024
Hunan University
2024
Northeast Forestry University
2024
University of Delaware
2011-2018
Wichita Clinic
2018
Catalytic Materials (United States)
2014-2017
Delaware Technical Community College
2017
Southwest University
2015-2017
Newark Hospital
2015
Electrochemical water splitting is a clean technology that can store the intermittent renewable wind and solar energy in H2 fuels. However, large-scale production greatly hindered by sluggish oxygen evolution reaction (OER) kinetics at anode of electrolyzer. Although many OER electrocatalysts have been developed to negotiate this difficult reaction, substantial progresses design cheap, robust, efficient catalysts are still required considered huge challenge. Herein, we report simple...
Three-dimensional porous crystalline polyimide covalent organic frameworks (termed PI-COFs) have been synthesized. These PI-COFs feature non- or interpenetrated structures that can be obtained by choosing tetrahedral building units of different sizes. Both show high thermal stability (>450 °C) and surface area (up to 2403 m(2) g(-1)). They also loading good release control for drug delivery applications.
The design and synthesis of 3D covalent organic frameworks (COFs) have been considered a challenge, the demonstrated applications COFs so far limited to gas adsorption. Herein we describe two new microporous base-functionalized COFs, termed BF-COF-1 BF-COF-2, by use tetrahedral alkyl amine, 1,3,5,7-tetraaminoadamantane (TAA), combined with 1,3,5-triformylbenzene (TFB) or triformylphloroglucinol (TFP). As catalysts, both BF-COFs showed remarkable conversion (96% for 98% BF-COF-2), high size...
Easy cell: The new polymeric ionomer TPQPOH with a tris(2,4,6-trimethoxyphenyl)phosphonium unit has excellent solubility in some low-boiling-point water-soluble solvents, high ionic conductivity, and outstanding alkaline stability. A hydroxide exchange membrane fuel cell containing this exhibits increased peak power density reduced internal resistance. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not...
As members of the redox-flow battery (RFB) family, nonaqueous RFBs can offer a wide range working temperature, high cell voltage, and potentially energy density.
The rapid growth of intermittent renewable energy (e.g., wind and solar) demands low-cost large-scale storage systems for smooth reliable power output, where redox-flow batteries (RFBs) could find their niche. In this work, we introduce the first all-soluble all-iron RFB based on iron as same redox-active element but with different coordination chemistries in alkaline aqueous system. adoption largely alleviates challenging problem cross-contamination metal ions RFBs that use two elements. An...
Abstract Porous platinum nanotubes (PtNTs) with a all thickness of 5 nm, an outer diameter 60 and length 5–20 μm are synthesized by galvanic displacement silver nanowires, which formed the ethylene glycol reduction nitrate. Oxygen reaction (ORR) durability experiments conducted for PtNTs, Pt nanoparticles supported on carbon (Pt/C), bulk polycrystalline (BP‐Pt) electrocatalysts to evaluate their catalytic properties use as cathode catalysts in proton exchange membrane fuel cells. PtNTs...
A simple self-crosslinking strategy, without the needs of a separate crosslinker or catalyst, is reported here. The crosslinking drastically lowers water swelling ratio (e.g., 5-10 folds reduction) and provides excellent solvent-resistance. self-crosslinked membrane (DCL: 5.3%) shows highest IEC-normalized hydroxide conductivity among all crosslinked HEMs reported.
A zinc–iron redox-flow battery is developed that uses low cost redox materials and delivers high cell performance, consequently achieving an unprecedentedly system capital under $100 per kW h.
Removing excess nitrate (NO3–) from waste streams has become a significant environmental and health topic. However, realizing highly selective NO3– conversion toward N2, primarily via electrocatalytic conversions, proven challenging, largely because of the kinetically uncontrollable NO3–-to-NO2– pathway unfavorable N–N coupling. Herein, we discovered unique ultra-high NO3–-to-NO2–activity on oxide-derived silver (OD-Ag). Up to 98% selectivity 95% Faradaic efficiency (FE) NO2– were observed...
Anion-exchange membrane fuel cells hold promise to greatly reduce cost by employing nonprecious metal cathode catalysts. More efficient anode catalysts are needed, however, improve the sluggish hydrogen oxidation reaction in alkaline electrolytes. We report that BCC-phased PdCu alloy nanoparticles, synthesized via a wet-chemistry method with critical thermal treatment, exhibit up 20-fold HOR improvement both mass and specific activities, compared FCC-phased counterparts. activity of is 4...
Tertiary sulfonium is introduced as the cationic functional group for hydroxide exchange membranes (HEMs). The methoxyl-substituted triarylsulfonium functionalized HEM (i.e., PSf-MeOTASOH) exhibits excellent thermal stability (TOD: 242 °C), acceptable conductivity (15.4 mS cm−1 at 20 and good chemical stability. Our work shows that, similar to nitrogen phosphorus, a sulfur element with designed side groups can also be used construct groups.
A new class of hydroxide exchange membranes (HEMs) is prepared by using a quaternary phosphonium-based polymer. The display desirable properties, most notably high conductivity. corresponding fuel cell exhibits the highest HEM performance to date and shows better intrinsic catalyst-activity compared with state-of-the-art proton membrane cells. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset....
Abstract The design and synthesis of 3D covalent organic frameworks (COFs) have been considered a challenge, the demonstrated applications COFs so far limited to gas adsorption. Herein we describe two new microporous base‐functionalized COFs, termed BF‐COF‐1 BF‐COF‐2, by use tetrahedral alkyl amine, 1,3,5,7‐tetraaminoadamantane (TAA), combined with 1,3,5‐triformylbenzene (TFB) or triformylphloroglucinol (TFP). As catalysts, both BF‐COFs showed remarkable conversion (96 % for 98 BF‐COF‐2),...
The study of particle size effect provides the fundamental understanding active sites that is necessary for guiding design and development better catalysts. Here we report a systematic investigation hydrogen oxidation evolution reaction (HOR/HER) on carbon supported Pd nanoparticles with sizes ranging from 3 to 42 nm in both acidic alkaline electrolytes using rotating disk electrode (RDE) method. Similar was obtained acid base: HOR/HER activity terms specific exchange current density...
Abstract Hydroxide (OH − )-exchange membranes (HEMs) are important polymer electrolytes enabling the use of affordable and earth-abundant electrocatalysts for electrochemical energy-conversion devices such as HEM fuel cells, electrolyzers solar hydrogen generators. Many cations exist, featuring desirable properties, but new still needed to increase chemical stability at elevated temperatures. Here we introduce permethyl cobaltocenium [(C 5 Me ) 2 Co(III) + or Cp * Co ] an ultra-stable...
An efficient Ag-phosphonium ionomer interface is discovered in HEMFCs, helping enhance oxygen reduction and improve mass transports simultaneously. As a result, completely-precious-metal-free HEMFC has been fabricated, which shows cost-normalized power much higher than that of Pt-based PEMFC benchmark (117 vs. 7.7 W US$(-1)).
A redox-flow-battery cell design with multiple ion-exchange membranes is provided to enable combinations of any redox pairs and supporting electrolytes.
We report an ambient pressure synthesis method for silicate zeolite. This combines the advantages of ionothermal synthesis, dry-gel conversion, and microwave radiation, making it a promising, safe, fast, continuous process industrial application.