A5052264044- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- MXene and MAX Phase Materials
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and devices
- Transition Metal Oxide Nanomaterials
- Perovskite Materials and Applications
- Phosphorus and nutrient management
- Electrocatalysts for Energy Conversion
- Inorganic Fluorides and Related Compounds
- Graphene research and applications
- Gas Sensing Nanomaterials and Sensors
- Layered Double Hydroxides Synthesis and Applications
- Conducting polymers and applications
- Fuel Cells and Related Materials
- Esophageal and GI Pathology
- Electrochemical Analysis and Applications
Czech Academy of Sciences, Institute of Physics
2023-2025
Chinese Academy of Sciences
2021-2025
Nanjing University of Science and Technology
2017-2024
Institute of Physics
2021-2024
Oregon State University
2019-2022
Center for NanoScience
2017
Metal sulfides are promising anode materials for sodium-ion batteries due to their large specific capacities. The practical applications of metal in batteries, however, still limited volume expansion, poor cycling stability, and sluggish electrode kinetics. In this work, a two-dimensional heterostructure CoSx (CoS Co9S8) quantum dots embedded N/S-doped carbon nanosheets (CoSx@NSC) is prepared by sol–gel method. situ formed within ultrafine without further sulfidation, thus resulting particle...
Abstract High energy density at high power is still a challenge for the current Li‐ion capacitors (LICs) due to mismatch of charge‐storage capacity and electrode kinetics between capacitor‐type cathode battery‐type anode. In this work, B N dual‐doped 3D porous carbon nanofibers are prepared through facile method as both anode LICs. The dual doping has profound effect in tuning porosity, functional groups, electrical conductivity nanofibers. With rational design, developed (BNC) exhibit...
Abstract Zn batteries potentially offer the highest energy density among aqueous that are inherently safe, inexpensive, and sustainable. However, most cathode materials in suffer from capacity fading, particularly at a low current rate. Herein, it is shown ZnCl 2 “water‐in‐salt” electrolyte (WiSE) addresses this fading problem to large extent by facilitating unprecedented performance of battery Ca 0.20 V O 5 ∙0.80H O. Upon increasing concentration electrolytes 1 m 30 m, rises 296 mAh g −1...
Potassium-ion batteries (PIBs) are one of the emerging energy-storage technologies due to low cost potassium and theoretically high energy density. However, development PIBs is hindered by poor K+ transport kinetics structural instability cathode materials during intercalation/deintercalation. In this work, birnessite nanosheet arrays with K content (K0.77 MnO2 ⋅0.23H2 O) prepared "hydrothermal potassiation" as a potential for PIBs, demonstrating ultrahigh reversible specific capacity about...
Anodes involving conversion and alloying reaction mechanisms are attractive for potassium-ion batteries (PIBs) due to their high theoretical capacities. However, serious volume change metal aggregation upon potassiation/depotassiation usually cause poor electrochemical performance. Herein, few-layered SnS2 nanosheets supported on reduced graphene oxide (SnS2 @rGO) fabricated investigated as anode material PIBs, showing specific capacity (448 mAh g-1 at 0.05 A ), rate capability (247 1...
Abstract The sluggish ion diffusion and electrolyte freezing with volumetric changes limit the low‐temperature performance of rechargeable batteries. Herein, a high‐rate aqueous proton battery (APB) operated at below −78 °C via 62 wt% (9.5 m) H 3 PO 4 is reported. APB rocking‐chair that operates protons commuting between Prussian blue cathode an MoO anode. At °C, full cells exhibit stable cycle life for 450 cycles, high round‐trip efficiency 85%, appreciable power performance. delivers 30%...
Abstract The development of sodium‐ion batteries is hindered by the poor Na + transport kinetics and structural instability electrode materials during intercalation/deintercalation. In this work, surface‐dominated storage demonstrated on oxygen‐functionalized graphene nanosheets (FGS) with fast surface redox reaction robust stability. FGS samples tunable oxygen contents species are fabricated via a two‐step thermal exfoliation method from graphite oxides. surface‐induced functional groups...
Charge compensation from cationic and anionic redox couples accompanying Na+ (de)intercalation in layered oxide cathodes contributes to high specific capacity. However, the engagement level of different remains unclear their relationship with content is less studied. Here we discover that it possible take full advantage high-voltage transition metal (TM) reaction through low-valence cation substitution tailor electronic structure, which involves an increased ratio available charge transfer...
The deposition of volatilized Na
Minimizing the irreversibility during first cycle in carbon anodes is crucial to energy density and lifespan of Na-ion batteries (NIBs). However, underlying mechanism irreversible capacity, especially combined with kinetics interface, still incompletely understood. Herein, we discovered that poor strong polarization will drive Na+ residual at interface as pseudo-dead Na trigger electrolyte decomposition form extra SEI, thus sacrificing initial Coulombic efficiency (ICE). Manipulating defect...
Abstract The formation of the soluble polysulfides (Na 2 S n , 4 ≤ 8) causes poor cycling performance for room temperature sodium–sulfur (RT Na–S) batteries. Moreover, insoluble < 4) can slow down reaction kinetics and terminate discharge before it reaches final product. In this work, coffee residue derived activated ultramicroporous carbon (ACC) material loading with small sulfur molecules (S 2–4 ) as cathode RT Na–S batteries is reported. first principle calculations indicate space...
Abstract Aqueous zinc‐ion batteries are receiving increasing attention; however, the development of high‐voltage cathodes is limited by narrow voltage window conventional aqueous electrolytes. Herein, it reported that Na 3 V 2 (PO 4 ) O 1.6 F 1.4 exhibits excellent performance, optimal to date, among polyanion cathode materials in a novel neutral water‐in‐bisalts electrolyte 25 m ZnCl + 5 NH Cl. It delivers reversible capacity 155 mAh g −1 at 50 mA , high average operating potential ≈1.46 V,...
The electrochemical performance of most transition metal oxides based on the conversion mechanism is greatly restricted by inferior cycling stability, rate capability, high overpotential induced serious irreversible reactions, low electrical conductivity, and poor ion diffusivity. To mitigate these problems, highly porous Mn3 O4 micro/nanocuboids with in situ formed carbon matrix (denoted as @C micro/nanocuboids) are designed synthesized via a one-pot hydrothermal method, which glucose plays...
Abstract Transition metal oxides, possessing high theoretical specific capacities, are promising anode materials for sodium‐ion batteries. However, the sluggish sodiation/desodiation kinetics and poor structural stability restrict their electrochemical performance. To achieve fast Na storage capability, in this work, rambutan‐like hybrid hollow spheres of carbon confined Co 3 O 4 nanoparticles synthesized by a facile one‐pot hydrothermal treatment with postannealing. The hierarchy structure...
Abstract Aqueous dual‐ion batteries (DIBs) are promising for large‐scale energy storage due to low cost and inherent safety. However, DIBs limited by capacity poor cycling of cathode materials the challenge electrolyte decomposition. In this study, a new material nitrogen‐doped microcrystalline graphene‐like carbon is investigated in water‐in‐salt 30 m ZnCl 2 , where stores anions reversibly via both electrical double layer adsorption ion insertion. The (de)insertion lattice delivers...
Anion storage in cathode of dual-ion batteries provides leeway for new battery chemistries. For high energy density and better safety, it is desirable but challenging to reversibly intercalate chloride a graphite because either the oxygen or chlorine evolution reaction can prevail over insertion. The primary barrier lack suitable aqueous electrolytes that suppress these parasitic reactions. Herein, we report an deep eutectic solvent gel electrolyte allows reversible based on chloride-based...
Abstract Heterostructured composites, inheriting the integrated properties of individual components due to synergistic effect, have engendered great attention in materials science and energy storage. However, conventional biphasic heterostructures not only optimize performance composites but also aggregate inevitable drawbacks, which can be addressed with construction triphasic by introducing an appropriate intermediate phase, significantly. Herein, a two‐dimensional (2D)...
A facile sol–gel route to prepare functional graphene nanosheets/cobalt sulfide hybrid nanocomposites as high-speed-stable sodium-ion anodes.
Highlighted by the safe operation and stable performances, titanium oxides (TiO2) are deemed as promising candidates for next generation lithium-ion batteries (LIBs). However, pervasively low capacity is casting shadow on desirable electrochemical behaviors obscuring their practical applications. In this work, we reported a unique template-assisted two-step atomic layer deposition (ALD) method to achieve TiO2@Fe2O3 core-shell nanotube arrays with hollow interior double-wall coating. The...