A5055879028- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- Extraction and Separation Processes
- Transition Metal Oxide Nanomaterials
- Electrocatalysts for Energy Conversion
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Copper-based nanomaterials and applications
- Terahertz technology and applications
- Advanced biosensing and bioanalysis techniques
- MXene and MAX Phase Materials
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Graphene research and applications
- Electrochemical sensors and biosensors
University College London
1994-2025
Huazhong University of Science and Technology
2013-2024
Hebei University of Technology
2024
Yangzhou University
2024
China University of Petroleum, Beijing
2022-2024
Beijing National Laboratory for Molecular Sciences
2024
University of Chinese Academy of Sciences
2024
China Agricultural University
2024
Second Xiangya Hospital of Central South University
2023
Central South University
2023
Potassium-ion batteries are a promising alternative to lithium-ion batteries. However, it is challenging achieve fast charging/discharging and long cycle life with the current electrode materials because of sluggish potassiation kinetics. Here we report soft carbon anode, namely highly nitrogen-doped nanofibers, superior rate capability cyclability. The anode delivers reversible capacities 248 mAh g-1 at 25 mA 101 20 A g-1, retains 146 2 after 4000 cycles. Surface-dominated K-storage...
Potassium‐ion batteries (KIBs) in organic electrolytes hold great promise as an electrochemical energy storage technology owing to the abundance of potassium, close redox potential lithium, and similar electrochemistry with lithium system. Although carbon materials have been studied KIB anodes, investigations on cathodes scarcely reported. A comprehensive study potassium Prussian blue K 0.220 Fe[Fe(CN) 6 ] 0.805 ⋅4.01H 2 O nanoparticles a cathode material is for first time The exhibits high...
Organic sodium-ion batteries (SIBs) are potential alternatives of current commercial inorganic lithium-ion for portable electronics (especially wearable electronics) because their low cost and flexibility, making them possible to meet the future flexible large-scale requirements. However, only a few organic SIBs have been reported so far, most either were tested in very slow rate or suffered significant performance degradation when cycled under high rate. Here, we focusing on molecular...
Mg-doped hematite (α-Fe2O3) was synthesized by atomic layer deposition (ALD). The resulting material identified as p-type with a hole concentration of ca. 1.7 × 1015 cm–3. When grown on n-type hematite, the found to create built-in field that could be used assist photoelectrochemical water splitting reactions. A nominal 200 mV turn-on voltage shift toward cathodic direction measured, which is comparable what has been measured using oxidation catalysts. This result suggests it possible...
In this work, we report the crystalline structure, morphology, and optical properties of novel metastable hexagonal phase MoO3 (h-MoO3) nanobelts prepared by a simple hydrothermal route from peroxomolybdate solution with presence sodium nitrate as mineralizer. During reaction process, NaNO3 has been proposed to influence deoxidation, condensation, further dehydration water-soluble precursor for connecting [MoO6] octahedra vertex sharing edge arrangements on determining generation phase. The...
Anatase TiO2 nanocrystals were successfully employed as anodes for rechargeable Na-ion batteries the first time. The mesoporous electrodes exhibited a highly stable reversible charge storage capacity of ∼150 mA h g−1 over 100 cycles, and able to withstand high rate cycling, fully recovering this after being cycled at rates 2 A g−1.
BiVO4 has been regarded as a promising material for photoelectrochemical water splitting, but it suffers from major challenge on charge collection and utilization. In order to meet this challenge, we design nanoengineered three-dimensional (3D) ordered macro-mesoporous architecture (a kind of inverse opal) Mo:BiVO4 through controllable colloidal crystal template method with the help sandwich solution infiltration adjustable post-heating time. Within expectation, superior photocurrent density...
Highly ordered Sb nanorod arrays with large interval spacing were fabricated that showed high capacities and superior rate capabilities.
Rechargeable sodium-ion batteries (SIBs) have attracted great attention for large-scale electric energy storage applications and smart grid owing to the abundance of Na resources comparable performance with lithium-ion batteries. The use organic electrode materials enables a sodium system high energy/power density, metal-free, environmental friendliness, flexibility, lightweight, cost-effectiveness. More importantly, structural diversity ease functionalizing molecules allows straightforward...
The utilization of oxygen vacancies (OVs) in sodium ion batteries (SIBs) is expected to enhance performance, but as yet it has rarely been reported. Taking the MoO(3-x) nanosheet anode an example, for first time we demonstrate benefits OVs on SIB performance. Moreover, at deep-discharge conditions can be further promoted by ultrathin Al2O3 coating. A series measurements show that increase electric conductivity and Na-ion diffusion coefficient, promotion from coating lies effective reduction...
Rechargeable ion batteries have contributed immensely to shaping the modern world and been seriously considered for efficient storage utilization of intermittent renewable energies. To fulfill their potential in future market, superior battery performance high capacity, great rate capability, long lifespan is undoubtedly required. In past decade, along with discovering new electrode materials, focus has shifting more toward rational designs because intimately connected architectures,...
Abstract Vacancy engineering has been proved repeatedly as an adoptable strategy to boost electrocatalysis, while its poor selectivity restricts the usage in nitrogen reduction reaction (NRR) overwhelming competition from hydrogen evolution (HER). Revealed by density functional theory calculations, selenium vacancy ReSe 2 crystal can enhance electroactivity for both NRR and HER shifting d‐band −4.42 −4.19 eV. To restrict HER, we report a novel method burying vacancy‐rich @carbonized...
Abstract Hybrid capacitors exhibit promise to bridge the gap between rechargeable high‐energy density batteries and high‐power supercapacitors. This separation is due sluggish ion/electron diffusion inferior structural stability of battery‐type materials. Here, a topochemistry‐driven method for constructing expanded 2D rhenium selenide intercalated by nitrogen‐doped carbon hybrid (E‐ReSe 2 @INC) with strong‐coupled interface weak van der Waals forces, proposed. X‐ray absorption spectroscopy...
With graphite currently leading as the most viable anode for potassium-ion batteries (KIBs), other materials have been left relatively under-examined. Transition metal oxides are among these, with many positive attributes such synthetic maturity, long-term cycling stability and fast redox kinetics. Therefore, to address this research deficiency we report herein a layered potassium titanium niobate KTiNbO
Abstract The heavy reliance of lithium-ion batteries (LIBs) has caused rising concerns on the sustainability lithium and transition metal ethic issue around mining practice. Developing alternative energy storage technologies beyond become a prominent slice global research portfolio. play vital role in shaping future landscape storage, from electrified mobility to efficient utilization renewable energies further large-scale stationary storage. Potassium-ion (PIBs) are promising given its...
The electrochemiluminescence (ECL) behavior of luminol on a gold nanoparticle self-assembled electrode in neutral and alkaline pH conditions was studied under conventional cyclic voltammetry (CV). exhibited excellent electrocatalytic property redox reactivity to the ECL system. In solution, four peaks were observed at 0.69, 1.03, -0.45, -1.22 V (vs SCE) curve intensity versus potential. Compared with bulk electrode, two anodic one cathodic greatly enhanced, new peak appeared. obtained 0.69...
Organic sodium‐ion batteries (SIBs) are one of the most promising alternatives current commercial inorganic lithium‐ion (LIBs) especially in foreseeable large‐scale flexible and wearable electronics. However, only a few reports involving organic SIBs so far. To achieve fast‐charge fast‐discharge performance long‐term cycling suitable for practical applications, is still challenging. Here, important factors high with capacity cyclability under process investigated. It found that controlling...
An enhanced visible-light-driven photocatalyst, CuInS(2), was prepared by a facile in situ formed template solvothermal route. The products show complex hierarchical architectures assembled from interleaving two-dimensional microcrystals and near monodispersity. It is interesting to see revealed phase conversion process binary sulfide ternary as well morphology evolution, investigated X-ray diffraction scanning electron microscopy. involved CuS hierarchitectures form then act the...
Sodium ion batteries (SIBs) represent an effective energy storage technology with potentially lower material costs than lithium batteries. Here, we show that the electrochemical performance of SIBs, especially rate capability, is intimately connected to electrode design at nanoscale by taking anatase TiO2 as example. Highly ordered three-dimensional (3D) Ni-TiO2 core–shell nanoarrays were fabricated using nanoimprited AAO templating technique and directly used anode. The delivered a...
The development of the catalytic conversion biomass-based platform molecules into oxygenated fuel is great significance in order to reduce dependence on fossil resources and solve environmental problems. Alkyl valerate esters were proven have potential be renewable additives gasoline diesel. In this work, we studied hydrogenation levulinic acid (LA) over supported Ru catalysts, found that acidity was an important factor for catalyst performance. A bifunctional Ru/SBA-SO3H developed as active...
New-phase VO2 micro/nanostructures built by nanoflakes have been first synthesized a hydrothermal method with NH4VO3 as precursor in the presence of poly(vinyl pyrrolidone) (PVP). The combined structural analysis X-ray powder diffraction (XRD) and absorption fine structure (XAFS) spectroscopy determined crystal new-phase vanadium dioxide, which is isostructure monoclinic NiWO4 designated VO2(D). In particular, electron spin resonance (ESR) measurements provides direct evidence ion four...
Expanded interlayer spacing and additionally exposed edges induced by defects of MoS<sub>2</sub> enable facile K-intercalation, rapid K-transport promoted K-adsorption.
Self-supported metallic nanopore arrays with highly oriented nanoporous structures are fabricated and applied as ideally nanostructured electrodes for supercapacitor applications. Their large specific surface area can ensure a high capacitance, their stable structure facilitate ion transport.