A5023636980- Advanced battery technologies research
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Battery Technologies Research
- MXene and MAX Phase Materials
- Conducting polymers and applications
- Fuel Cells and Related Materials
- Advanced Sensor and Energy Harvesting Materials
- Copper-based nanomaterials and applications
- Microwave Dielectric Ceramics Synthesis
- Ferroelectric and Piezoelectric Materials
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- X-ray Diffraction in Crystallography
- ZnO doping and properties
- Crystallization and Solubility Studies
- Quantum Dots Synthesis And Properties
- Advanced Chemical Sensor Technologies
South China University of Technology
2023-2024
Northwestern Polytechnical University
2015-2024
State Grid Corporation of China (China)
2019-2024
City University of Hong Kong
2017-2023
Electric Power Research Institute
2020
Kowloon Hospital
2017-2019
Hong Kong Polytechnic University
2018
China XD Group (China)
2015-2017
State Key Laboratory of Solidification Processing
2015
Abstract The hydrogen evolution in Zn metal battery is accurately quantified by situ battery–gas chromatography–mass analysis. fluxes reach 3.76 mmol h −1 cm −2 a Zn//Zn symmetric cell each segment, and 7.70 Zn//MnO 2 full cell. Then, highly electronically insulating (0.11 mS ) but 2+ ion conductive (80.2 ZnF solid conductor with high transfer number (0.65) constructed to isolate from liquid electrolyte, which not only prohibits over 99.2% parasitic also guides uniform electrodeposition....
Abstract Hydrogel materials are receiving increasing research interest due to their intriguing structures that consist of a crosslinked network polymer chains with interstitial spaces filled solvent water. This feature endows the characteristics being both wet and soft, making them ideal candidates for electrolyte flexible energy storage devices, such as supercapacitors rechargeable batteries under intensive studies nowadays. More importantly, highly abundant tunable chemistries these...
An ionic-liquid-based Zn salt electrolyte is demonstrated to be an effective route solve both the side-reaction of hydrogen evolution reaction (HER) and Zn-dendrite growth in Zn-ion batteries. The developed enables hydrogen-free, dendrite-free plating/stripping over 1500 h cycle (3000 cycles) at 2 mA cm-2 with nearly 100% coulombic efficiency. Meanwhile, oxygen-induced corrosion passivation are also effectively suppressed. These features bring batteries unprecedented long lifespan 40 000...
Rechargeable aqueous zinc–cobalt oxide batteries with high voltage, excellent rate capability and long-cycling life.
Abstract Prussian blue analogue (PBA)‐type metal hexacyanoferrates are considered as significant cathodes for zinc batteries (ZBs). However, these PBA‐type cathodes, such cyanogroup iron hexacyanoferrate (FeHCF), suffer from ephemeral lifespan (≤1000 cycles), and inferior rate capability (1 A g −1 ). This is because the redox active sites of multivalent (Fe(III/II)) can only be very limited activated thus utilized. attributed to spatial resistance caused by compact cooperation interaction...
Abstract Herein, a two‐species redox reaction of Co(II)/Co(III) and Fe(II)/Fe(III) incorporated in cobalt hexacyanoferrate (CoFe(CN)6) is proposed as breakthrough to achieve jointly high‐capacity high‐voltage aqueous Zn‐ion battery. The Zn/CoFe(CN) 6 battery provides highly operational voltage plateau 1.75 V (vs metallic Zn) high capacity 173.4 mAh g −1 at current density 0.3 A , taking advantage the couples. Even under extremely fast charge/discharge rate delivers sufficiently discharge...
Zinc oxide (ZnO) and zeolitic imidazolate framework-8 (ZIF–8) core–shell heterostructures were obtained by using the self-template strategy where ZnO nanorods not only act as template, but also provide Zn2+ ions for formation of ZIF–8 shell. The shell was uniformly deposited to form ZnO@ZIF–8 with at 70 °C 24 h optimum reaction time hydrothermal synthesis. Transmission electron microscopy (TEM) images revealed that are composed core Nitrogen (N2) sorption isotherms demonstrated as-prepared a...
Abstract Stretchable devices need elastic hydrogel electrolyte as an essential component, while most hydrogels will lose their stretchability after being incorporated with strong alkaline solution. This is why highly stretchable zinc–air batteries have never been reported so far. Herein, super‐stretchable, flat‐ (800% stretchable) and fiber‐shaped (500% are first developed by designing alkaline‐tolerant dual‐network electrolyte. In the electrolyte, sodium polyacrylate (PANa) chains...
The exploitation of a high-efficient, low-cost, and stable non-noble-metal-based catalyst with oxygen reduction reaction (ORR) evolution (OER) simultaneously, as air electrode material for rechargeable zinc-air battery is significantly crucial. Meanwhile, the compressible flexibility prerequisite wearable or/and portable electronics. Herein, we present strategy via single-site dispersion an Fe-Nx species on two-dimensional (2D) highly graphitic porous nitrogen-doped carbon layer to implement...
Abstract In this work, a high‐voltage output and long‐lifespan zinc/vanadium oxide bronze battery using Co 0.247 V 2 O 5 ⋅0.944H nanobelt is developed. The high crystal architecture could enable fast reversible Zn 2+ intercalation/deintercalation at highly operational voltages. developed exhibits voltage of 1.7 delivers capacity 432 mAh g −1 0.1 A . voltages above 1.0 reaches 227 , which 52.54% the total higher than values all previously reported Zn/vanadium batteries. Further study reveals...
For the first time solid-state zinc ion hybrid supercapacitors based on co-polymer derived hollow carbon spheres with good flexibility have been developed.
Although both are based on Zn, Zn-air batteries and Zn-ion good at energy density power density, respectively. Here, we adopted Ar-plasma to engrave a cobalt oxide with abundant oxygen vacancies (denoted as Co3O4- x). The introduction of not only promotes its reversible Co-O ↔ Co-O-OH redox reaction but also leads reduction evolution (ORR/OER) performance (a half-wave potential 0.84 V, four-electron transfer process for ORR, 330 mV overpotential, 58 mV·dec-1 Tafel slope OER). We then...
The development of new, appealing metal-free photocatalysts is great significance for photocatalytic hydrogen evolution. Herein, an electrostatic self-assembly method to form a unique core–shell architecture colloid carbon spheres with graphitic nitride (g-C3N4) has been developed by one-step chemical solution route. protonation g-C3N4 solids strong oxidizing acids (such as HNO3) efficient pathway toward the sol procedure stable colloids, which can cover surface via adsorption. On account...
Nonbattery behavior related phase transition of electrodes is usually not favorable for any batteries because it results in performance degradation at all times. Here, we demonstrate a zinc hybrid-ion battery (ZHIB) with an unusual capacity enhancement even within 18 000 cycles by employing V2CTX MXene as the cathode, enormously differing from reported counterparts initiated hundreds cycles. The dominated mechanisms are determined to be delamination and unexpected during cycling. Both...
There is a growing demand for flexible and wearable energy devices. How to enhance their tolerance various mechanical stresses key issue. Bending, stretching, or twisting of batteries has been widely researched. However, shear force inevitably applied on the during bending, twisting. Unfortunately, thus far, research analyzing resistance solid even enhancing never reported. Herein, sewable Zn-MnO2 battery based nanofibrillated cellulose (NFC)/ployacrylamide (PAM) hydrogel, electrodeposited...
Abstract The electrocatalytic nitrate reduction reaction (NO 3 ‐RR) to ammonia (NH ) offers a promising alternative approach for NH production and nitrate‐based voltaic cells which can deliver both electricity as products, are also highly attractive. However, nitrate‐to‐NH conversion involves proton‐assisted multiple‐electron transfer process with considerable kinetic barrier, underlying the need efficient catalysts NO – RR. A Zn‐nitrate battery is reported enable “killing three birds one...
Solid electrolytes based on the polymer-grafted MXene eliminate dendrites and hydrogen evolution of ZIBs, endow ZIBs with up to 90 days shelf life.
The renaissance of aqueous Zn ion batteries has drawn intense attention to metal anode issues, including dendrites growth, dead Zn, low efficiency, and other parasitic reactions. However, against the widely used 2D foil, in fact, powder is a more practical choice for Zn-based industrial applications, but related solutions are rarely investigated. Herein, we focus on disclose its unknown failure mechanism different from foils. By utilization flexible conductive Ti3C2Tx MXene flakes with...