High-Voltage-Resistant Highly Stable Solid Polymer Electrolyte via In Situ Integrated Construction with Fast Ion Migration

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Electric aircraft such as electric and vehicles play a key role in the future aviation industry, but they put forward huge requirements for battery energy density. However, current high-energy-density lithium technology still needs to be broken through. Herein, through molecular structure design of polymer electrolyte, strategy fast migration channel wide electrochemical window is proposed fabricate high-voltage-resistant solid electrolyte (HVPE) via situ polymerization. Thus, HVPE exhibits an ultrahigh Li+ transfer number (tLi+) 0.92 excellent 5.1 V match with high-voltage cobalt oxide (LCO) cathode. This conduction allows stable uniform plating stripping deposition more than 1000 h, which also reveals well-defined dual interfacial stabilization mechanism. These results endow assembled LCO|HVPE|Li cell cycles steadily 500 at 4.5 0.5C superior capacity retention 89.93%. Moreover, pouch rate up 94.01% after 50 cycles. More importantly, our provides new insights into structural fabrication strategies solid-state batteries.

Language: Английский

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Machine Learning‐Assisted Simulations and Predictions for Battery Interfaces

Advanced Intelligent Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

As nations worldwide intensify their efforts to achieve environmental goals and reduce carbon emissions, as the energy landscape continues evolve, importance of advanced battery technology becomes increasingly critical. Despite significant advancements, persistent challenges at interfaces—where electrode electrolyte interactions occur—are particular concern. These interfaces play pivotal roles in phenomena such dendrite growth formation solid–electrolyte interphases (SEI), which are crucial for performance, longevity, safety batteries. Machine learning (ML), a vital subset artificial intelligence, offers robust capabilities by autonomously identifying patterns complex datasets, thereby enhancing understanding these intricate interfacial processes. This review highlights recent progress ML‐assisted simulations predictions interfaces, illustrating how ML accelerates research development trajectory. By employing algorithms machine vision, lithium growth, SEI formation, dynamics can be performed. not only deepen comprehension but also serve foundation further material optimization predication property enhancement. The aim this is spur ongoing application address existing challenges, advancing state‐of‐the‐art technologies.

Language: Английский

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In Situ Formed Three‐Dimensionally Conducting Polymer Electrolyte for Solid‐State Lithium Metal Batteries With High‐Cathode Loading

SusMat, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

ABSTRACT Low‐ionic conductivity within high‐loading cathode has greatly limited the application of solid polymer electrolytes in rechargeable batteries. Herein, electrolyte with a three‐dimensionally conducting network is obtained by situ polymerization vinyl ethylene carbonate (VEC) aid dipentaerythritol hexaacrylate (DPHA) crosslinker solid‐state lithium (Li) metal batteries (LMBs). The weak coordination Li + C═O and C─O groups promotes dissociation transport . P(VEC–DPHA) enables fast orderly path hinders TFSI − , rendering remarkable ionic (2.53 × 10 −4 S cm −1 ), high transference number (0.47), wide electrochemical window (5.1 V). A total 87.38% capacity retention rate LiNi 0.8 Co 0.1 Mn O 2 ||Li achieved after 200 cycles at 0.2 C. can also provide stable under harsh conditions (1 C), high‐cathode loading (10.83 mg −2 high‐energy‐density pouch cell (421.8 Wh kg 25 ). This work provides novel insights for design highly conductive LMBs.

Language: Английский

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Favored Amorphous LixSi Process with Restrained Volume Change Enabling Long Cycling Quasi‐solid‐state SiOx anode

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 23, 2024

Silicon-based anodes are becoming promising materials due to their high specific capacity. However, the intrinsically large volume change brought about by alloying reaction results in crushing of active particles and destruction electrode structure, which severely limits its practical application. Various structured modified silica-based exhibit improved cycling stability demonstrated ability mitigate changes through interfacial binder strategies. issue silicon-based remains. Herein, we report a gel polymer electrolyte (GPE) prepared an situ thermal polymerization process that is suitable for SiO

Language: Английский

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Interface engineering of quasi-solid poly(vinylidene fluoride) separators for next-generation lithium ion batteries

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216104 - 216104

Published: July 26, 2024

Language: Английский

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Interfacial Engineering of Polymer Solid‐State Lithium Battery Electrolytes and Li‐Metal Anode: Current Status and Future Directions

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Abstract A combination of material innovations, advanced manufacturing, battery management systems, and regulatory standards is necessary to improve the energy density safety lithium (Li) batteries. High‐energy‐density solid‐state Li‐batteries have potential revolutionize industries technologies, making them a research priority. The improved compatibility with high‐capacity electrode materials makes solid‐stateLi‐batteries polymer solid‐electrolytes an attractive option for applications where are critical. While polymer‐based hold enormous promise, there still several challenges that must be addressed, particularly regarding interface between solid‐electrolyte Lianode. There significant advancements in improving performance Li batteries, researchers continue explore new methods address these challenges. These improvements critical enabling widespread adoption invariety applications, from electrical vehicles portable electronics. Here, common its Lianode first introduced, highlighting trend solid‐state‐electrolyte toward enhancing stability, safety, Li‐batteries. This includes developing novel properties, exploring fabrication techniques, integrating electrolytes into designs optimize both density.

Language: Английский

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Garnet‐Type Solid‐State Electrolytes: Crystal‐Phase Regulation and Interface Modification for Enhanced Lithium Metal Batteries

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Due to their substantial energy density, rapid charging and discharging rates, extended lifespan, lithium-ion batteries have attained broad application across various industries. However, limited theoretical capacity struggles meet the growing demand for battery in consumer electronics, automotive, aerospace applications. As a promising substitute, solid-state lithium-metal (SSLBs) emerged, utilizing anode that boasts significant specific non-flammable electrolytes (SSEs) address density limitations safety concerns. For SSLBs attain large-scale commercial viability, SSEs require heightened ionic-conductivity, improved mechanical characteristics, enhanced chemical electrochemical stability. Furthermore, tackling challenges related interfacial contacts between is imperative. This review comprehensively overviews primary methods used prepare garnet summarizes doping strategies sites on Li

Language: Английский

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Long‐Cycling, Fast‐Charging Lithium Metal Batteries Enabled by Nickel‐Carbon Composite Nanosheet Arrays Modified Lithium Metal Anodes

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Lithium (Li) metal anode, one of the most promising candidates for next‐generation rechargeable batteries, has always suffered from uneven Li deposition/stripping. To address this issue, work designs a novel nickel‐carbon composite modified anode (FNC‐NF) by carbonizing fluoride nickel hydroxide nanosheet arrays grown on foam (NF). These electrochemical tests present that conductive and lithiophilic FNC can effectively restrain growth dendrites during cycling deposition/stripping at large capacities up to 10 mAh cm −2 . This result is attributed featured composition combining core mixed coating defective carbon Ni nanoparticles, unique hierarchical morphology FNC‐NF integrating porous NF vertically aligned nanosheets. Consequently, presents stable coulombic efficiency performance after 900 cycles with an average 99.23% half cells, lifespan over 3200 h symmetric cells 1 mA , remarkable stability current densities 15 Moreover, Li||FNC‐NF||LiFePO 4 full show superior capacity retention C.

Language: Английский

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Trace Metal Impurities Induce Differences in Lithium–Sulfur Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 19, 2024

Carbon nanotubes (CNTs) with exceptional conductivity have been widely adopted in lithium-sulfur (Li-S) batteries. While trace metal impurities CNTs demonstrated electrocatalytic activity various catalytic processes, their influence on sulfur electrocatalysis Li-S batteries has largely overlooked. Herein, we reveal that the content significantly improves specific capacity and cycling performance of by analyzing both our own results previous literature as hosts. Even under lean electrolyte conditions (E/S ratio 5 μL mg

Language: Английский

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SnF2‐Catalyzed Lithiophilic–Lithiophobic Gradient Interface for High‐Rate PEO‐based All‐Solid‐State Batteries

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(44)

Published: Aug. 2, 2024

Abstract Polyethylene oxide (PEO)‐based all‐solid‐state lithium metal batteries (ASSLMBs) are strongly hindered by the fast dendrite growth at Li metal/electrolyte interface, especially under large rates. The above issue stems from suboptimal interfacial chemistry and poor + transport kinetics during cycling. Herein, a SnF 2 ‐catalyzed lithiophilic‐lithiophobic gradient solid electrolyte interphase (SCG‐SEI) of x Sn y /LiF‐Li O is in situ formed. superior ionic LiF‐Li rich upper layer (17.1 nm) possesses high energy diffusion channels, wherein lithiophilic alloy (8.4 could highly reduce nucleation overpotential with lower barrier promote rapid electron transportation for reversible plating/stripping. Simultaneously, insoluble ‐coordinated PEO promotes ion bulk phase. As result, an over 46.7 3.5 times improvements lifespan critical current density symmetrical cells achieved, respectively. Furthermore, LiFePO 4 ‐based ASSLMBs deliver recorded cycling performance 5 C (over 1000 cycles capacity retention 80.0 %). More importantly, impressive electrochemical performances safety tests LiNi 0.8 Mn 0.1 Co pouch cell , even extreme conditions (i.e., 100 °C), also demonstrated, reconfirmed importance design high‐rate applications.

Language: Английский

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