Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 103, P. 114257 - 114257
Published: Oct. 23, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 5, 2024
Abstract Sodium metal is regarded as an optimal anode material for high‐energy‐density sodium‐ion batteries (SIBs). However, during the processes of sodium deposition and stripping, failure solid electrolyte interphase (SEI) film leads to continuous accumulation inactive sodium, thereby compromising cycling reversibility battery. Here, a novel fluoride heterointerface layer generated constructed through in situ manipulation reaction between TiF 4 Na. The reconstructed NaF/TiF 3 interface layer, which tightly anchors metal, effectively suppresses formation dendrites charge‐discharge process. highly sodium‐philic component exhibits strong binding with Na ions, while NaF reduces + diffusion energy barrier, significantly enhancing kinetics. Due successful artificial construction this Na/TiF composite electrode demonstrates exceptional ultra‐long stability 2370 h symmetric cells (0.5 mAh cm −2 ). Density functional theory (DFT) calculations further validate functionality each protective layer. When paired NaNi 1/3 Fe Mn O 2 cathode pouch cell, it up 2000 cycles at current densities C C, maximum density output 483.1 Wh kg −1 (power density: 320.8 W
Language: Английский
Citations
11
Science and Technology of Advanced Materials, Journal Year: 2024, Volume and Issue: 25(1)
Published: Oct. 29, 2024
Developing electrochemical energy storage and conversion systems, such as capacitors, batteries, fuel cells is crucial to address rapidly growing global demands environmental concerns for a sustainable society. Significant efforts have been devoted the structural design engineering of various electrode materials improve economic applicability performance. The yolk-shell structures represent special kind core-shell morphologies, which show great application potential in storage, controlled delivery, adsorption, nanoreactors, sensing, catalysis. Their controllable void spaces may facilitate exposure more ative sites redox reactions enhance selective adsorption. Based on different nanoarchitectonic designs fabrication techniques, with nanofeatures homo- or hetero-compositions provide multiple synergistic effects promote electrode/electrolyte interfaces. This review focused key features architectures, highlighting recent advancements their adjustable space mono- multi-metallic composites. tailorable structure functionality nanostructures processes are also summarized.
Language: Английский
Citations
7
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(27), P. 35179 - 35189
Published: June 25, 2024
Na3V2(PO4)2F3 (NVPF) is emerging as a popular cathode for sodium-ion batteries owing to its stable structure, high operating voltage, and large energy density. However, practical application hindered by low conductivity. In addition, due the loss of fluorine during synthesis, Na3V2(PO4)3 (NVP) impurity often easily generated, resulting in decrease actual voltage. Herein, bifunctional carbon network composed an N-doped layer bridge constructed around NVPF particles. Through pyrolysis polydopamine (PDA), particles are covered situ layer, generated polytetrafluoroethylene (PTFE) also coated with carbon. Besides, PTFE serves supplement ensure that pure obtained. As result, network-modified delivers reversible capacity (125.7 mA h g–1 at 0.2 C) appreciable cycle stability (92.7% 1 C over 300 cycles, 89.8% 10 1500 cycles). When assembled into full cell commercial hard anode, it displays discharge median voltage up 3.62 V C. Furthermore, achieves density 373.7 W kg–1 power 461.2 kg–1, excellent specific retention 78.2% after 200 cycles. Therefore, this modification method expected be extended other fluorine-containing materials poor electrical
Language: Английский
Citations
4
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 19422 - 19439
Published: Jan. 1, 2024
Zinc-ion anchoring crosslinked hydrogels and regulating electronic structure to achieve high performance of Na 3 V 2 (PO 4 ) .
Language: Английский
Citations
4
Small, Journal Year: 2025, Volume and Issue: unknown
Published: March 25, 2025
Na2+2xFe2-x(SO4)3 (NFSO) is a promising cathode material for sodium-ion batteries (SIBs) due to its low cost and high operating potential (≈3.8 V). However, poor intrinsic electronic conductivity sluggish kinetics are major drawbacks practical application. Herein, magnesium doped microspheres (Na2.54(Fe0.97Mg0.03)1.73(SO4)3) synthesized via designed spray-drying process. The optimized ([email protected]) possesses excellent rate performance up 50C (50.8 mAh g-1 at 50C) long-cycle stability (capacity retention of 78.3% even after 9000 cycles 10C). Despite an increase in the mass loading 10 mg cm-2, electrode continues represent reversible capacity 72.1 3C. Furthermore, [email protected]║HC full cell demonstrates superior cycling (80% over 8000 5C) energy density (≈310 Wh kg-1, based on cathode). In situ X-ray diffraction (XRD) results reveal that Mg doping strategy successfully mitigates variation lattice volume. functional theory (DFT) calculations verify prominent attributed enhanced Na+ diffusion ionic-migration barrier. This work provides effective fundamental understanding enhance electrochemical materials SIBs.
Language: Английский
Citations
0
Energy Advances, Journal Year: 2024, Volume and Issue: 3(6), P. 1238 - 1264
Published: Jan. 1, 2024
Materials with a core–shell and yolk–shell structure have attracted considerable attention owing to their attractive properties for application in Na batteries other electrochemical energy storage systems.
Language: Английский
Citations
3
ChemSusChem, Journal Year: 2024, Volume and Issue: unknown
Published: June 13, 2024
Layered transition metal oxides are widely considered as ideal cathode materials for SIBs. However, the existing P2 and O3 structures possess specific issues, which limit their practical applications. To address these this work designed a novel intergrowth layered oxide with phases by implementing Cu Ti into structure formation of high-entropy superior performance The electrochemical test results show that optimized P2/O3 possesses high initial discharge capacity 157.85 mAh g
Language: Английский
Citations
3
Nanotechnology, Journal Year: 2024, Volume and Issue: 35(37), P. 375601 - 375601
Published: June 10, 2024
Abstract The development of electrochemical energy storage devices has a decisive impact on clean renewable energy. Herein, novel ultrafast rechargeable hybrid sodium dual-ion capacitors (HSDICs) were designed by using ultrathin carbon film (UCF) as the cathode material. UCF is synthesized simple low temperature catalytic route followed an acid leaching process. owns large adsorption interface and number additional active sites, which due to nitrogen doping. In addition, there exists several short-range order carbons surface UCF, are beneficial for anionic storage. An remarkable performance, anion capability outstanding structure stability fully tapped employing HSDICs. performance in half-cell system at operating voltage between 1.0 4.8 V, achieving admirable specific discharge capacity 358.52 mAh·g −1 500 mA·g , high retention ratio 98.42% after cycling 2500 times 1000 respectively. Besides, with support ex-situ TEM EDS mapping, structural principle mechanism electrode investigated depth. full-cell system, HSDICs hard anode also presents super-long cycle (80.62% 1300 ).
Language: Английский
Citations
2
Small, Journal Year: 2024, Volume and Issue: unknown
Published: June 5, 2024
Abstract Janus‐micromotors, as efficient self‐propelled materials, have garnered considerable attention for their potential applications in non‐agitated liquids. However, the design of micromotors is still challenging and with limited approaches, especially concerning speed mobility complex environments. Herein, a two‐step spray‐drying approach encompassing symmetrical assembly asymmetrical introduced to fabricate metal‐organic framework (MOF) Janus‐micromotors hierarchical pores. Using spray‐dryer, first employed prepare macro‐meso‐microporous UiO‐66 intrinsic micropores (<0.5 nm) alongside mesopores (≈24 macropores (≈400 nm). Subsequent yielded UiO‐66‐Janus loaded reducible nanoparticles, which underwent oxidation by KMnO 4 form MnO 2 micromotors. The efficiently generated O self‐propulsion H , exhibiting ultrahigh speeds (1135 µm s −1 5% solution) unique anti‐gravity diffusion effects. In specially designed simulated sand‐water system, traversed from lower water upper through sand layer. particular, as‐prepared demonstrated optimal efficiency pollutant removal, an adsorption kinetic coefficient exceeding five times that only possessing mesopores. This novel strategy fabricating shows great treatment
Language: Английский
Citations
2
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 1, 2024
Language: Английский
Citations
1