A5086589297- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Ferroelectric and Piezoelectric Materials
- Extraction and Separation Processes
- MXene and MAX Phase Materials
- Advanced Battery Technologies Research
- Transition Metal Oxide Nanomaterials
- Online and Blended Learning
- Semiconductor materials and interfaces
- Microwave Dielectric Ceramics Synthesis
- Chemical Synthesis and Characterization
- Adsorption and Cooling Systems
- Gender and Technology in Education
- Graphene research and applications
- Dielectric properties of ceramics
- Advanced ceramic materials synthesis
- Layered Double Hydroxides Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Health Sciences Research and Education
- Thermal Expansion and Ionic Conductivity
- Health Literacy and Information Accessibility
- X-ray Diffraction in Crystallography
- Education and Technology Integration
Dayeh University
2025
Qingdao University
2019-2024
Donghua University
2024
Stanford University
2024
Fudan University
2023-2024
Hainan University
2015-2020
Qingdao Center of Resource Chemistry and New Materials
2019-2020
Materials Science & Engineering
2019
Haikou City People's Hospital
2015-2019
Ministry of Natural Resources
2018
Potassium-ion batteries (KIBs) are receiving increasing interest in grid-scale energy storage owing to the earth abundant and low cost of potassium resources. However, their development still stays at infancy stage due lack suitable electrode materials with reversible depotassiation/potassiation behavior, resulting poor rate performance, capacity, cycling stability. Herein, first example synthesizing single-crystalline metallic graphene-like VSe2 nanosheets for greatly boosting performance...
Intercalation-type MoNb<sub>12</sub>O<sub>33</sub> with a porous-microspherical nanoarchitecture is explored as the first molybdenum niobium oxide anode material for Li<sup>+</sup> storage.
Abstract The recently explored FeNb 11 O 29 is an advanced anode material for lithium‐ion batteries, owing to its high specific capacity and safety. However, it suffers from poor rate capability. To tackle this issue, a crystal structure modification employed. Defective (FeNb 27.9 ) fabricated by using one‐step solid‐state reaction method in N 2 . has the same orthorhombic shear ReO 3 ( Amma space group) as , but larger unit‐cell volume 3.8 % 2− vacancies (vs. all ions), which improve Li +...
Ru<sub>0.01</sub>Ti<sub>0.99</sub>Nb<sub>2</sub>O<sub>7</sub>, with a much larger capacity than Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>, fulfils the requirements of high power and energy density for electric vehicles.
We report a new class of Si/SiO<sub>x</sub>@void@nitrogen-doped carbon double-shelled hollow superstructure electrodes that are capable accommodating huge volume changes without pulverization during cycling.
Intercalation-type TiNbxO2+2.5x (x = 2, 5, and 24) anode materials have recently become more interesting for lithium-ion batteries (LIBs) due to their large theoretical capacities of 388-402 mAh g-1. However, the Ti4+/Nb5+ ions in with empty 3d/4d orbitals usually lead extremely low electronic conductivity <10-9 S cm-1, greatly restricting practical capacity rate capability. Herein, we report a class highly conductive Cr0.5Nb24.5O62 nanowires as an intercalation-type material...
TiNb6O17 shows a similar crystal structure to Ti2Nb10O29 (Wadsley-Roth shear structure) but has larger lattice parameters and 0.49% cation vacancies, leading its large Li(+) ion diffusion coefficients. It exhibits initial discharge capacity of 383 mA h g(-1) at 0.1 C, high rate performance good cyclability.
Abstract Niobates with shear ReO 3 crystal structures are remarkably promising anode materials for Li + batteries due to their large capacities, inherent safety, and high cycling stability. However, they generally suffer from limited rate capabilities rooted in insufficient electronic conductivities. Here, micrometer‐sized copper niobate (Cu 2 Nb 34 O 87 ) bulk as a new material having conductivity of 2.1 × 10 −5 S cm −1 an impressive average diffusion coefficient ≈3.5 −13 s is exploited,...
TiNb24O62 is explored as a new anode material for lithium-ion batteries. Microsized particles (M-TiNb24O62) are fabricated through simple solid-state reaction method and porous microspheres (P-TiNb24O62) synthesized facile solvothermal the first time. exhibits Wadsley–Roth shear structure with structural unit composed of 3 × 4 octahedron-block 0.5 tetrahedron at block-corner. P-TiNb24O62 an average sphere size ∼2 μm constructed by nanoparticles ∼100 nm, forming inter-particle pores ∼8 nm...
This paper describes the syntheses and electrochemical properties of a new niobate compound, aluminum (AlNb11O29), for Li+ storage. AlNb11O29-microsized particles nanowires were synthesized based on solid-state reaction solvothermal methods, respectively. In situ X-ray diffraction results confirmed intercalating mechanism in AlNb11O29 revealed its high structural stability against cycling. The with novel bamboo-like morphology afforded large interfacial area short charge transport pathways,...
Tungsten-free and niobium-rich Al<sub>0.5</sub>Nb<sub>24.5</sub>O<sub>62</sub> with an intercalated nature is explored as a new practical anode material for high-performance lithium-ion storage.
Fe<sup>2+</sup>/Cr<sup>3+</sup> doped LTO/MWCNT composites were made by combining doping, compositing and particle-size reduction, exhibit improved electrochemical performances.
Conductive Nb<sub>12</sub>O<sub>29</sub> hierarchical microspheres with nanosheet shells demonstrated comprehensively good electrochemical properties, including a significant pseudocapacitive contribution, safe operating potential, high reversible capacity, superior initial coulombic efficiency, increased rate capability, and durable cycling stability.
Abstract To explore anode materials with large capacities and high rate performances for the lithium-ion batteries of electric vehicles, defective Ti 2 Nb 10 O 27.1 has been prepared through a facile solid-state reaction in argon. X-ray diffractions combined Rietveld refinements indicate that same crystal structure stoichiometric 29 (Wadsley-Roth shear A2/m space group) but larger lattice parameters 6.6% 2– vacancies ( vs. all ions). The electronic conductivity Li + ion diffusion coefficient...
Abstract Flexible electrodes with high charge storage capacity, low solid‐state diffusion resistance toward charges, and excellent mechanical properties are needed for fabricating flexible energy devices. In this paper, an approach is described to synthesize a composite material hollow rutile TiO 2 cuboid arrays supported on carbon fiber cloth (H‐TiO @CFC). This used as self‐supporting binder‐free anode sodium‐ion storage, delivering reversible capacities of 287.3 at 0.1 C 103.3 mAh g −1 50...
The existing electrode materials for lithium-ion batteries (LIBs) generally suffer from poor rate capability at low temperatures, severely limiting their applications in winter and cold climate area. Here, partially reduced TiNb24 O62 (PR-TNO) are reported that demonstrates excellent electrochemical performance a broad temperature range, notably temperatures. Its crystal structure is similar to of Ti2 Nb10 O29 upon partial reduction H2 . titanium niobium ions PR-TNO enable multielectron...
Abstract Conductive nickel niobium oxide (Ni 2 Nb 34 O 87 ) is rationally designed and synthesized as a safe anode material for lithium‐ion storage. Ni exhibits high‐rate capability cycling stability in the temperature range between ‐ 10 60 ° C. At 25 C, it delivers reversible specific capacities of 339 mAh g ‐1 at 0.1C with 98.1% capacity retention after 1000 cycles 20C. displays 207 64.0% when C‐rate increases from 0.5C to 2C no decay 2C. 224 65.3% 10C 78.7% maintained 10C. In‐situ X‐ray...
Present-day Li+ storage materials generally suffer from sluggish low-temperature electrochemical kinetics and poor high-temperature cycling stability. Herein, based on a Ca2+ substituted Mg2Nb34O87 anode material, we demonstrate that decreasing the ionic packing factor is two-fold strategy to enhance cyclic The resulting Mg1.5Ca0.5Nb34O87 shows smallest among Wadsley–Roth niobate materials. Compared with Mg2Nb34O87, delivers 1.6 times faster diffusivity at −20 °C, leading it having 56%...