High structure stability and Li-conduction of LiNi_0.8Co_0.1Mn_0.1O₂ cathode co-coated by Al₂O₃ and LiNbO₃ for high performance lithium-ion battery

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

We successfully fabricated NCM811 co-coated with Al 2 O 3 and LiNbO . enhances structural stability, while improves Li + ion conduction. This co-coating strategy electrochemical performance compared to single coating methods.

Language: Английский

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Progress in Direct Recycling of Spent Lithium Nickel Manganese Cobalt Oxide (NMC) Cathodes

Energy storage materials, Journal Year: 2024, Volume and Issue: unknown, P. 103813 - 103813

Published: Oct. 1, 2024

Language: Английский

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Flexible upper cut-off voltage regulation for life extension of lithium-ion batteries

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 134776 - 134776

Published: Jan. 1, 2025

Language: Английский

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Uncovering the role of atmosphere on thermal stability of NASICON type solid electrolytes and oxide-based cathode materials via high temperature X-ray diffraction

Deleted Journal, Journal Year: 2025, Volume and Issue: unknown, P. 100045 - 100045

Published: Feb. 1, 2025

Language: Английский

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Cation-disordered fluoride to facilitate durable interfaces in (all) solid-state Li batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104136 - 104136

Published: Feb. 1, 2025

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Interfacial Engineering Using a Thiophene-based Electrolyte Additive for High-Voltage Lithium-Ion Batteries

Energy & Fuels, Journal Year: 2025, Volume and Issue: 39(9), P. 4525 - 4539

Published: Feb. 24, 2025

Ni-rich layered oxides, such as LiNi0.8Co0.1Mn0.1O2 (NCM811), are increasingly favored for high-energy-density lithium-ion batteries (LIBs) with long lifespans. However, the electrochemical performance of NCM811 cathodes significantly deteriorates at elevated temperatures and high voltages exceeding 4.3 V vs. Li/Li+. In this study, we present 2,5-dimethyl-3-(phenylsulfonyl)thiophene (DMPST) an electrolyte additive, creating thermally electrochemically stable interfaces on electrodes. The electron-rich sulfonyl motif DMPST attracts Li+ ions, generating free PO2F2– anions promoting creation a cathode interphase (CEI) upon addition LiPO2F2. also forms dual-layered solid P–O-rich outer layer sulfur-rich inner layer, mitigating graphite anode degradation in full cells. thiophene moiety constructs polymer-like CEI conjunction LiPO2F2, which adeptly accommodates volumetric stresses associated delithiation processes 4.5 V. This mitigates transition metal leaching reduces crosstalk NCM811/graphite synergistic application LiPO2F2 enables exceptional capacity retention, demonstrating 73.5% (135.2 mAh g–1) after 500 cycles 25 °C, 78.4% (142.7 4.2 45 °C. study provides valuable insights into design additives operation under voltages, grounded fundamental understanding LIB mechanisms.

Language: Английский

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Dispersion-assisted carbon nanotubes as a conductive agent for dry-processed cathode for lithium-ion battery

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161183 - 161183

Published: March 1, 2025

Language: Английский

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A Sustainable Direct Recycling Method for LMO/NMC Cathode Mixture from Retired Lithium‐Ion Batteries in EV

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Direct recycling methods offer a non‐destructive way to regenerate degraded cathode material. The materials be recycled in the industry typically constitute mixture of various extracted from wide variety retired lithium‐ion batteries. Bridging gap, direct method using low‐temperature sintering process is reported. LMO (LiMn 2 O 4 ) and NMC (LiNiCoMnO LIBs was successfully regenerated by proposed with low temperature 300°C for h. Advanced characterization tools were utilized validate full recovery crystal structure mixture. After regeneration, LMO/NMC shows an initial capacity 144.0 mAh g −1 retention 95.1% at 0.5 C 250 cycles. also 83 C, which slightly higher compared pristine As result process, electrochemical performance recovered same level as Life‐cycle assessment results emphasized 90.4% reduction energy consumption 51% PM2.5 emissions battery packs

Language: Английский

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Additive-induced robust interphases on the interface of LiNi0.8Co0.1Mn0.1O2 cathode for long-term stability of lithium-ion batteries at high voltage of 4.8 V

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146214 - 146214

Published: April 1, 2025

Language: Английский

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Structure, redox states, and magnetic properties of Li1−xNi1−zCoz/2Mn

Physical Review Materials, Journal Year: 2025, Volume and Issue: 9(4)

Published: April 22, 2025

Cathode materials Li1−xNi1−zCoz/2Mnz/2O2 with z=1/5 (NCM811), z=2/5 (NCM622), or z=2/3 (NCM111) in (i) the pristine state, (ii) charged to x=0.5 x=0.65, and (iii) discharged after having been previously were characterized by x-ray diffraction (XRD), absorption spectroscopy (XAS), direct current (DC) alternating (AC) magnetometry, heat capacity, nuclear magnetic resonance (NMR) spectroscopy. The properties of these layered oxides are decisively determined Ni2+ ions that have migrated from transition metal (TM) layer Li magnetically coupled Ni, Co, Mn cations occupying neighboring sites within adjacent TM layers. For states, this cluster formation causes a bifurcation between zero-field-cooled (ZFC) field-cooled (FC) susceptibility vs temperature curve (which sets continuously below about 100 K) is responsible for appearance broad maximum imaginary χ′′ centered around 14, 23, 25 K NCM111, NCM622, NCM811, respectively. states reduced Ni2+ amount do no longer show features pointing strongly ability. Further, three-dimensional (frustrated) long-range ordering leads local capacity another abrupt ZFC/FC (both observable slightly 10 additional all compositions (and charge) common. With increasing Ni Co/Mn ratio, low-temperature exhibits more pronounced “partial” spin-glass-like characteristic as inferred frequency shift AC maximum. results AC/DC magnetometry measurements return complementary information what can be XRD, XAS, NMR investigations Li/Ni disorder, TMs' oxidation states. systematic investigation samples different ratios (going NCM811 via NCM622 NCM111) TMs (at allows better understanding how phenomena correlated (real) structure electronic oxide cathode materials. Published American Physical Society 2025

Language: Английский

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