Fire Technology, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 21, 2024
Language: Английский
Advanced Science, Journal Year: 2024, Volume and Issue: 11(38)
Published: Aug. 9, 2024
Passive battery thermal management systems (BTMSs) are critical for mitigation of runaway (TR). Phase change materials (PCMs) have shown promise mitigating transient challenges. Fluid leakage and low effective conductivity limit PCM adoption. Furthermore, the capacitance PCMs diminishes as their latent load is exhausted, creating an unsustainable cooling effect that transitory. Here, expanded graphite/PCM/graphene composite solves these challenges proposed. The graphite/PCM phase eliminates increases while graphene coating enables radiative regeneration. demonstrates excellent performance in a real BTMS shows 26% decrease temperature when compared to conventional materials. exhibits control comparable with active cooling, resulting reduced cost increased simplicity. In addition BTMSs, this material anticipated application plethora engineered requiring stringent management.
Language: Английский
Citations
9
eTransportation, Journal Year: 2024, Volume and Issue: unknown, P. 100364 - 100364
Published: Sept. 1, 2024
Language: Английский
Citations
9
Advanced Science, Journal Year: 2024, Volume and Issue: 11(28)
Published: April 29, 2024
Lithium-ion batteries (LIBs) are currently the predominant energy storage power source. However, urgent issues of enhancing electrochemical performance, prolonging lifetime, preventing thermal runaway-caused fires, and intelligent application obstacles to their applications. Herein, bio-inspired electrodes owning spatiotemporal management self-healing, fast ion transport, fire-extinguishing, thermoresponsive switching, recycling, flexibility overviewed comprehensively, showing great promising potentials in practical due significantly enhanced durability safety LIBs. Taking advantage self-healing core-shell structures, binders, capsules, or liquid metal alloys, these can maintain mechanical integrity during lithiation-delithiation cycling. After incorporation fire-extinguishing current collectors, flame retardants be released spatiotemporally runaway ensure safety. Thermoresponsive switching also constructed though adding thermally responsive components, which rapidly switch LIB off under abnormal conditions resume functions quickly when normal operating return. Finally, challenges electrode designs presented optimize It is anticipated that proposed with will not only promote industrial application, but strengthen fundamental research bionics storage.
Language: Английский
Citations
6
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(7), P. 3369 - 3379
Published: June 14, 2024
A prevalent method to bolster the safety of lithium-ion batteries (LIBs) is through deployment phosphate-based electrolytes. Nonetheless, an intrinsic challenge arises from incompatibility between phosphate components and graphite anodes, a phenomenon known as coinsertion. To tackle this obstacle, we introduce comprehensive strategy that employs in situ thermal polymerization, leveraging flame-retardant solvent polymer matrix. This approach fosters strong dipole–dipole interactions molecules matrix, effectively alleviating adverse impacts on anodes. significant enhancement validated X-ray diffraction, photoelectron spectroscopy depth profile analysis, transmission electron microscopy imaging. Our methodology facilitated stable operations within electrolytes comprising 20% assembled NCM811|P-GPE|Gr pouch cells, achieving low-capacity decay rate 0.0023% per cycle with good characteristics. We believe heralds new commercial prospects for incorporating solvents creation exceptionally safe LIBs.
Language: Английский
Citations
6
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(13)
Published: Dec. 20, 2023
Abstract Developing sacrificial cathode prelithiation technology to compensate for active lithium loss is vital improving the energy density of lithium‐ion battery full‐cells. Li 2 CO 3 owns high theoretical specific capacity, superior air stability, but poor conductivity as an insulator, acting a promising challenging agent candidate. Herein, extracting trace amount Co from LiCoO (LCO), lattice engineering developed through substituting sites with and inducing defects obtain composite structure consisting (Li 0.906 0.043 ▫ 0.051 ) 2.934 ball milled (Co‐Li @LCO). Notably, both bandgap ─ O bond strength have essentially declined in this structure. Benefiting synergistic effect bulk phase catalytic regulation Co, potential deep decomposition significantly decreases typical >4.7 ≈4.25 V versus Li/Li + , presenting >600 mAh g −1 compensation capacity. Impressively, coupling 5 wt% Co‐Li @LCO within NCM‐811 cathode, 235 Wh kg pouch‐type full‐cell achieved, performing 88% capacity retention after 1000 cycles.
Language: Английский
Citations
16
Small, Journal Year: 2024, Volume and Issue: 20(46)
Published: Aug. 8, 2024
Abstract In this study, state‐of‐the‐art on‐line pyrolysis MS (OP‐MS) equipped with temperature‐controlled cold trap and GC/MS (OP‐GC/MS) injected through high‐vacuum negative‐pressure gas sampling (HVNPGS) programming are originally designed/constructed to identify/quantify the dynamic change of common permanent gases micromolecule organics from anode/cathode–electrolyte reactions during thermal runaway (TR) process, corresponding TR mechanisms further perfected/complemented. On LiC x anode side, solid electrolyte interphase (SEI) would undergo continuous decomposition regeneration, R‐H + (e.g., HF, ROH, etc.) species derived continue react Li/LiC generate H 2 . Up above 200 °C, O release charged NCM cathode organic radicals be consumed/oxidized by evolved form CO , O, more corrosive HF. contrary, LFP does not present obvious evolution heating process unreacted flammable/toxic exit in high temperature/high‐pressure (HT/HP) vapors within batteries, indicating higher potential safety risks. Additionally, depth understanding mechanism outlined provides a clear direction for design/modification thermostable electrodes non‐flammable electrolytes safer batteries.
Language: Английский
Citations
4
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)
Published: Sept. 26, 2024
Abstract Lithium-ion batteries (LIBs) have dominated the portable electronic and electrochemical energy markets since their commercialisation, whose high cost lithium scarcity prompted development of other alkali-ion (AIBs) including sodium-ion (SIBs) potassium-ion (PIBs). Owing to larger ion sizes Na + K compared with Li , nanocomposites excellent crystallinity orientation well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium storage. With enticing open rigid framework structures, Prussian blue analogues (PBAs) remain promising self-sacrificial templates preparation various nanocomposites, appeal originates from well-retained porous structures exceptional activities after thermal decomposition. This review focuses on recent progress PBA-derived fabrication, storage mechanism, applications in AIBs (LIBs, SIBs, PIBs). To distinguish PBA derivatives, working mechanism PBA-templated metal oxides, chalcogenides, phosphides, are systematically evaluated, facilitating establishment a structure–activity correlation these materials. Based fruitful achievements perspectives future envisioned, aiming narrow down gap between laboratory study industrial reality.
Language: Английский
Citations
4
Journal of Power Sources, Journal Year: 2025, Volume and Issue: 634, P. 236492 - 236492
Published: Feb. 13, 2025
Language: Английский
Citations
0
Journal of Power Sources, Journal Year: 2023, Volume and Issue: 593, P. 233994 - 233994
Published: Dec. 21, 2023
Language: Английский
Citations
10
Molecules, Journal Year: 2024, Volume and Issue: 29(10), P. 2228 - 2228
Published: May 9, 2024
The integration of heterostructures within electrode materials is pivotal for enhancing electron and Li-ion diffusion kinetics. In this study, we synthesized CoO/MnO to enhance the electrochemical performance MnO using a straightforward electrostatic spinning technique followed by meticulously controlled carbonization process, which results in embedding heterostructured nanoparticles porous nitrogen-doped carbon nanofibers (CoO/MnO/NC). As confirmed density functional theory calculations experimental results, play significant role promoting Li+ ion charge transfer, improving electronic conductivity, reducing adsorption energy. accelerated kinetics, coupled with nanofiber structure, contribute exceptional CoO/MnO/NC electrode. Specifically, as-prepared exhibits high reversible specific capacity 936 mA h g−1 at 0.1 A after 200 cycles an excellent high-rate 560 5 g−1, positioning it as competitive anode material lithium-ion batteries. This study underscores critical regulation facilitated heterostructures, offering promising pathway designing transition metal oxide-based performances
Language: Английский
Citations
3