A5015993083- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Advancements in Battery Materials
- Conducting polymers and applications
- CO2 Reduction Techniques and Catalysts
- Catalysis and Hydrodesulfurization Studies
- Copper-based nanomaterials and applications
- Advanced Memory and Neural Computing
- Nanocluster Synthesis and Applications
- Nanoporous metals and alloys
- Layered Double Hydroxides Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Catalytic Cross-Coupling Reactions
- Covalent Organic Framework Applications
- Extraction and Separation Processes
- Mesoporous Materials and Catalysis
- Chalcogenide Semiconductor Thin Films
Umicore (Belgium)
2025
Nanjing Normal University
2015-2024
Nanyang Technological University
2017-2021
The University of Texas at Austin
2016-2021
California Maritime Academy
2018
Nanjing Library
2014
Analysis and Testing Centre
2014
Zhengzhou University
2012
University of Waterloo
1991
Electrocatalysts for oxygen-reduction and oxygen-evolution reactions (ORR OER) are crucial metal-air batteries, where more costly Pt- Ir/Ru-based materials the benchmark catalysts ORR OER, respectively. Herein, first time Ni is combined with MnO species, a 3D porous graphene aerogel-supported Ni/MnO (Ni-MnO/rGO aerogel) bifunctional catalyst prepared via facile scalable hydrogel route. The synthetic strategy depends on formation of oxide (GO) crosslinked poly(vinyl alcohol) that allows...
Abstract Li 7 La 3 Zr 2 O 12 ‐based Li‐rich garnets react with water and carbon dioxide in air to form a Li‐ion insulating CO layer on the surface of garnet particles, which results large interfacial resistance for transfer. Here, we introduce LiF 6.5 1.5 Ta 0.5 (LLZT) increase stability electrolyte against moist air; LLZT‐2 wt % (LLZT‐2LiF) has less shows small metal, solid polymer electrolyte, organic‐liquid electrolytes. An all‐solid‐state Li/polymer/LLZT‐2LiF/LiFePO 4 battery high...
Indium-oxide (In2O3) nanobelts coated by a 5-nm-thick carbon layer provide an enhanced photocatalytic reduction of CO2 to CO and CH4, yielding CH4 evolution rates 126.6 27.9 μmol h-1, respectively, with water as reductant Pt co-catalyst. The coat promotes the absorption visible light, improves separation photoinduced electron-hole pairs, increases chemisorption CO2, makes more protons from splitting participate in reduction, thereby facilitates CH4.
Nitrogen-coordinated metal single atoms in carbon have aroused extensive interest recently and been growing as an active research frontier a wide range of key renewable energy reactions devices. Herein, step-by-step self-assembly strategy is developed to allocate nickel (Ni) iron (Fe) respectively on the inner outer walls graphene hollow nanospheres (GHSs), realizing separate-sided different single-atom functionalization graphene. The Ni or Fe atom demonstrated be coordinated with four N via...
A promising bifunctional electrocatalyst is reported for air cathodes consisting of Ni 3 Fe nanoparticles embedded in porous nitrogen‐doped carbon sheets (Ni Fe/N‐C sheets) by a facile and effective pyrolysis‐based route with sodium chloride (NaCl) crystals as template. The show excellent catalytic activity, selectivity, durability toward both the oxygen‐reduction oxygen‐evolution reactions (ORR OER). They are shown to provide superior, low‐cost cathode rechargeable Zn‐air battery. At...
Developing high-efficiency and low-cost catalysts towards oxygen evolution reaction (OER) is extremely important for overall water splitting rechargeable metal−air batteries. Herein we propose a promising organometallic coordination polymer (OCP) induced strategy to construct hierarchical N-doped carbon framework with NiFe nanoparticles encapsulated inside (Nx[email protected]–C) as highly active stable OER catalyst. The synthesis of OCP precursor depends on the unique molecular structure...
NASICON (Na+ super ionic conductor) structures of NaxMV(PO4)3 (M = Mn, Fe, Ni) were prepared, characterized by aberration-corrected STEM and synchrotron radiation, demonstrated to be durable cathode materials for rechargeable sodium-ion batteries. In Na4MnV(PO4)3, two redox couples Mn3+/Mn2+ V4+/V3+ are accessed with voltage plateaus located at 3.6 3.3 V a capacity 101 mAh g-1 1 C. Furthermore, the Na4MnV(PO4)3 delivers high initial efficiency 97%, long durability over 1000 cycles, good rate...
Abstract Reversible oxygen reactions in Zn–air batteries require cost‐effective and highly‐active bifunctional electrocatalysts to substitute traditional noble‐metal based catalysts. Herein, a new promising electrocatalytic material, ternary CoIn 2 S 4 thiospinel, is demonstrated for effectively catalyzing reduction evolution (ORR OER) with S‐doped reduced graphene oxide (S‐rGO) as an electronic conductor. Compared Co 9 8 /S‐rGO (without In doping), the newly developed reveals superior...
Recent developments in various types of ternary metal sulfides (TMSs) for electrocatalytic energy conversion are summarized and discussed.
Ni-foam-supported Co(OH)F and Co–P nanoarrays were developed for energy-efficient hydrogen production with the assistance of urea electrolysis.
Well-defined and strikingly monomorphic Pt–Pd alloy nanoflowers (Pt–Pd ANFs) with dominant {111} facets were successfully synthesized through a facile cochemical reduction method in poly(allylamine hydrochloride) (PAH) based aqueous solution. The detailed morphology, composition, structure of the ANFs investigated by transmission electron microscopy (TEM), selected-area diffraction (SAED), energy dispersive spectrum (EDS), nitrogen adsorption–desorption isotherms (SADI), EDS mapping, X-ray...
The commercialization of Zn–air batteries has been impeded by the lack low-cost, highly active, and durable catalysts that act independently for oxygen electrochemical reduction evolution. Here, we demonstrate excellent performance NiCo nanoparticles anchored on porous fibrous carbon aerogels (NiCo/PFC aerogels) as bifunctional toward battery. This material is designed synthesized a novel K2Ni(CN)4/K3Co(CN)6-chitosan hydrogel-derived method. outstanding NiCo/PFC confirmed superior...
Developing active bifunctional oxygen catalysts to eliminate/reduce the reliance on precious-metal-based ones in metal–air batteries is nowadays of great importance. Here, we report synthesis nickel indium thiospinel nanosheets supported carbon nanofibers (denoted as NiIn2S4/CNFs) via a facile situ solvothermal growth process and, for first time, demonstrate its superior electrocatalytic performances precatalyst. Electrocatalytic experiments show that NiIn2S4/CNFs not only exhibits positive...
Design of cost-effective bifunctional electrocatalysts for both the oxygen evolution reaction (OER) and hydrogen (HER) is vital developing energy future. Herein, a phosphorus-doped Co-Fe-B material with chain-like structure (denoted as Co1-Fe1-B-P) reported an efficient novel electrocatalyst OER HER, was produced via facile water-bath synthesis subsequent phosphorization. For OER, as-prepared Co1-Fe1-B-P nanochains require extremely low overpotential about 225 mV at 10 mA cm-2 possess small...
Rare-earth (RE)-based transition metal oxides (TMO) are emerging as a frontier toward the oxygen evolution reaction (OER), yet knowledge regarding their electrocatalytic mechanism and active sites is very limited. In this work, atomically dispersed Ce on CoO successfully designed synthesized by an effective plasma (P)-assisted strategy model (P-Ce SAs@CoO) to investigate origin of OER performance in RE-TMO systems. The P-Ce SAs@CoO exhibits favorable with overpotential only 261 mV at 10 mA...
Abstract Tailoring composition and morphology of electrocatalysts is great importance in improving their catalytic performance. Herein, a salt‐templated strategy proposed to construct novel multicomponent Co/Co x M y (M = P, N) hybrids with outstanding electrocatalytic performance for the oxygen evolution reaction (OER). The obtained present porous sheet‐like architecture consisting many hierarchical secondary building‐units. synthetic depends on facile effective...
Abstract Electrocatalysts for both the oxygen reduction and evolution reactions (ORR OER) are vital performances of rechargeable metal–air batteries. Herein, we report an advanced bifunctional electrocatalyst consisting porous metallic nickel‐iron nitride (Ni 3 FeN) supporting ordered Fe Pt intermetallic nanoalloy. In this hybrid catalyst, bimetallic Ni FeN mainly contributes to high activity OER while nanoalloy excellent ORR. Robust FeN‐supported catalysts show superior catalytic...
Lattice engineering on specific facets of metal catalysts is critically important not only for the enhancement their catalytic performance but also deeply understanding effect facet-based lattice reactions. Here, we develop a facile two-step method expansion facets, i.e., Pt(100) and Pt(111), Pt catalysts. We first prepare Pd@Pt core–shell nanoparticles exposed with Pt(111) respectively, via Pd-seeded epitaxial growth, then convert Pd core to PdH0.43 by hydrogen intercalation. The induces...
A novel rare earth hybrid electrocatalyst, consisting of a gadolinium-doped hierarchal NiFe-layered double hydroxide, is developed for improving the OER activity.
Abstract An efficient and low‐cost electrocatalyst for reversible oxygen electrocatalysis is crucial improving the performance of rechargeable metal−air batteries. Herein, a novel vacancy–rich 2D porous In‐doped CoO/CoP heterostructure (In‐CoO/CoP FNS) designed developed by facile free radicals–induced strategy as an effective bifunctional Zn–air The electron spin resonance X‐ray absorption near edge spectroscopy provide clear evidence that abundant vacancies are formed in interface...
The development of highly efficient and economical materials for the oxygen reduction reaction (ORR) plays a key role in practical energy conversion technologies. However, intrinsic scaling relations exert thermodynamic inhibition on realizing active ORR electrocatalysts. Herein, novel feasible gradient orbital coupling strategy tuning performance through construction Co 3d-O 2p-Eu 4f unit sites Eu2 O3 -Co model is proposed. Through coupling, pristine ionic property between Eu O atoms...