A5005365457- Electrocatalysts for Energy Conversion
- Organic Electronics and Photovoltaics
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Perovskite Materials and Applications
- Advanced battery technologies research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Thin-Film Transistor Technologies
- CO2 Reduction Techniques and Catalysts
- Quantum Dots Synthesis And Properties
- Electrochemical Analysis and Applications
- Ferroelectric and Piezoelectric Materials
- Advanced Memory and Neural Computing
- Microwave Dielectric Ceramics Synthesis
- Dielectric properties of ceramics
- Catalytic Processes in Materials Science
- Silicon and Solar Cell Technologies
- Chalcogenide Semiconductor Thin Films
- Electrochemical sensors and biosensors
- Catalytic C–H Functionalization Methods
- Advanced oxidation water treatment
- Advancements in Solid Oxide Fuel Cells
- Nanowire Synthesis and Applications
Shanghai Jiao Tong University
2022-2025
Cornell University
2019-2024
Jilin University
2024
Yangtze Optical Electronic (China)
2024
Beijing University of Chemical Technology
2022-2023
Kunming University of Science and Technology
2022
Beijing Institute of Technology
2022
South Central Minzu University
2022
North China Electric Power University
2019-2021
University of Electronic Science and Technology of China
2020-2021
Developing high-performance, low-cost, and conductive nonprecious electrocatalysts for the oxygen reduction reaction (ORR) has been a key challenge advancing fuel cell technologies. Here, we report on novel family of cobalt nitrides (CoxN/C, x = 2, 3, 4) as ORR in alkaline cells. Co4N/C exhibited highest activity among three types studied, with half-wave potential (E1/2) 0.875 V vs RHE 1 M KOH, rivaling that commercial Pt/C (0.89 V). Moreover, showed an 8-fold improvement mass at 0.85 V,...
Abstract Distributed photovoltaics in living environment harvest the sunlight different incident angles throughout day. The development of planer solar cells with large light-receiving angle can reduce requirements installation form factor and is therefore urgently required. Here, thin film organic nano-sized phase separation integrated micro-sized surface topology demonstrated as an ideal solution to proposed applications. All-polymer cells, by means a newly developed sequential processing,...
Electrocatalysis has been the cornerstone for enhancing energy efficiency, minimizing environmental impacts and carbon emissions, enabling a more sustainable way of meeting global needs. Elucidating structure reaction mechanisms electrocatalysts at electrode–electrolyte interfaces is fundamental advancing renewable technologies, including fuel cells, water electrolyzers, CO2 reduction, batteries, among others. One challenges in electrocatalysis understanding how to activate sustain...
Hydrogen fuel cells have attracted growing attention for high-performance automotive power but are hindered by the scarcity of platinum (and other precious metals) used to catalyze sluggish oxygen reduction reaction (ORR). We report on a family nonprecious transition metal nitrides (TMNs) as ORR electrocatalysts in alkaline medium. The air-exposed spontaneously form several-nanometer-thick oxide shell conductive nitride core, serving highly active catalyst architecture. most catalyst,...
Hydrogen-atom transfer mediated by earth-abundant transition-metal hydrides (M-Hs) has emerged as a powerful tool in organic synthesis. Current methods to generate M-Hs most frequently rely on oxidatively initiated hydride transfer. Herein, we report reductive approach Co-H, which allows for canonical hydrogen evolution reactions be intercepted hydrogen-atom an alkene. Electroanalytical and spectroscopic studies provided mechanistic insights into the formation reactivity of enabled...
Hydrogen fuel cells have drawn increasing attention as one of the most promising next-generation power sources for future automotive transportation. Developing efficient, durable, and low-cost electrocatalysts, to accelerate sluggish oxygen reduction reaction (ORR) kinetics, is urgently needed advance cell technologies. Herein, we report on metal–organic frameworks-derived nonprecious dual metal single-atom catalysts (SACs) (Zn/Co–N–C), consisting Co–N4 Zn–N4 local structures. These...
Abstract Achieving desirable charge‐transport highway is of vital importance for high‐performance organic solar cells (OSCs). Here, it shown how molecular packing arrangements can be regulated via tuning the alkyl‐chain topology, thus resulting in a 3D network stacking and highly interconnected pathway electron transport simple‐structured nonfused‐ring acceptor (NFREA) with branched alkyl side‐chains. As result, record‐breaking power conversion efficiency 17.38% (certificated 16.59%)...
Abstract Adjusting the energy levels and fibrillar morphology is paramount to enhancing power conversion efficiency (PCE) of organic solar cells (OSCs). In present study, an increase in open‐circuit voltage ( V OC ) facilitated through elongation alkyl chain within AQx (namely AQx‐8), aiming decrease free volume ratio (FVR). This reduction FVR attenuates electron‐phonon coupling, thereby augmenting emission diminishing non‐radiative loss (Δ E nr ). To further refine morphological...
Ordered intermetallic nanoparticles are promising electrocatalysts with enhanced activity and durability for the oxygen-reduction reaction (ORR) in proton-exchange membrane fuel cells (PEMFCs). The ordered phase is generally identified based on existence of superlattice ordering peaks powder X-ray diffraction (PXRD). However, after employing a widely used postsynthesis annealing treatment, we have found that claims "ordered" catalysts were possibly/likely mixed phases intermetallics...
Pd-based materials are promising electrocatalysts for the formic acid oxidation reaction (FAOR) but suffer from poor durability due to poisoning of adsorbed carbon monoxide species (COads). In this work, PdBi ordered intermetallic (O-PdBi) nanoparticles were prepared in an effort mitigate formation like COads through isolating Pd atoms. The enhanced antipoisoning capability O-PdBi, relative Pd, gave rise superior activity and stability during FAOR. Differential electrochemical mass...
Significance We present a systematic study of family 15 types octahedral spinel electrocatalysts for the oxygen reduction reaction (ORR) in alkaline fuel cells. Three specific candidates, MnCo 2 O 4 /C, CoMn and CoFe exhibited very promising ORR activity. In particular, /C could rival activity selectivity Pt/C. Such performance was ascribed to partial charge transfer between Co Mn. The most active, unique Co–Mn core–shell structure with heterogeneous valence states, which were probed at...
Hydrogen fuel cells have emerged as promising, potentially renewable energy-based, energy conversion technologies for powering electric vehicles. However, the sluggish oxygen reduction reaction (ORR) at cathode has remained a longstanding challenge and requires design of nonplatinum electrocatalysts with high activity and, ideally, low cost. Here, we present combinatorial study Pd–Cu thin-film electrodes well-defined composition structures, prepared by magnetron sputtering, fast method...
Pd-based electrocatalysts are considered to be a promising alternative Pt in anion-exchange membrane fuel cells (AEMFCs), although major challenges remain. Most of the developed for sluggish oxygen reduction reaction (ORR) have been exclusively evaluated by rotating disk electrode (RDE) voltammetry at room temperature, rather than assemblies (MEAs), making it challenging apply them practical cells. We series carbon-supported novel PdHx nanosheets (PdHx NS), which displayed outstanding ORR...
Lithium-sulfur batteries represent an attractive option for energy storage applications. A deeper understanding of the multistep lithium-sulfur reactions and electrocatalytic mechanisms are required to develop advanced, high-performance batteries. We have systematically investigated redox processes catalyzed by a cobalt single-atom electrocatalyst (Co-SAs/NC) via operando confocal Raman microscopy x-ray absorption spectroscopy (XAS). The real-time observations, based on potentiostatic...
Rational molecular design and suitable device engineering are two important strategies to boost the efficiencies in organic solar cells (OSCs). Yet these approaches independently developed, while their synergy is believed be more productive. Herein, a branched polyfluoride moiety, heptafluoroisopropoxyl group, introduced into side chains of conjugated polymers for first time. Compared with conventional alkyl chain, this chain can endow resulting polymer namely PF7 highly packing order strong...