Ionic liquid electrolytes for sodium-ion batteries to control thermal runaway

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 81, P. 321 - 338

Published: March 14, 2023

Sodium-ion batteries are expected to be more affordable for stationary applications than lithium-ion batteries, while still offering sufficient energy density and operational capacity power a significant segment of the battery market. Despite this, thermal runaway explosions associated with organic electrolytes have led concerns regarding safety sodium-ion batteries. Among electrolytes, ionic liquids promising because they negligible vapor pressure show high electrochemical stability. This review discusses contributions these electrolyte properties high-temperature applications. The provide stability at same time promoting high-voltage window operations. Moreover, apart from cycle stability, there is an additional feature attributed modified ultra-concentrated liquid electrolytes. Concerning contributions, following been discussed, heat sources mechanisms, decomposition mechanism stable cations, transport In addition, hybrid systems consisting either carbonate or polymers also discussed. found main contributor cell For where safety, capacity, important, highly concentrated potential solutions

Language: Английский

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Homologous Heterostructured NiS/NiS₂@C Hollow Ultrathin Microspheres with Interfacial Electron Redistribution for High‐Performance Sodium Storage

Small, Journal Year: 2023, Volume and Issue: 19(42)

Published: June 15, 2023

Nickel sulfides with high theoretical capacity are considered as promising anode materials for sodium-ion batteries (SIBs); however, their intrinsic poor electric conductivity, large volume change during charging/discharging, and easy sulfur dissolution result in inferior electrochemical performance sodium storage. Herein, a hierarchical hollow microsphere is assembled from heterostructured NiS/NiS2 nanoparticles confined by situ carbon layer (H-NiS/NiS2 @C) via regulating the sulfidation temperature of precursor Ni-MOFs. The morphology ultrathin spherical shells confinement to active provide rich channels ion/electron transfer alleviate effects agglomeration material. Consequently, as-prepared H-NiS/NiS2 @C exhibit superb properties, satisfactory initial specific 953.0 mA h g-1 at 0.1 A , excellent rate capability 509.9 2 superior longtime cycling life 433.4 after 4500 cycles 10 . Density functional theory calculation shows that heterogenous interfaces electron redistribution lead charge NiS NiS2 thus favor interfacial transport reduce ion-diffusion barrier. This work provides an innovative idea synthesis homologous heterostructures high-efficiency SIB electrode materials.

Language: Английский

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Intelligent Monitoring for Safety‐Enhanced Lithium‐Ion/Sodium‐Ion Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(10)

Published: Jan. 25, 2023

Abstract Lithium‐ion/sodium‐ion batteries are the most advanced energy storage devices, but structural evolution of electrode materials, electrolyte decomposition, growth Li/Na dendrites and generation heat gas inside represent serious safety issues. Therefore, it is necessary to real time monitor parameter changes these devices. Herein, recent important progress in a variety intelligent detection techniques based on heat, gas, strain introduced discussed. The perfect combination electrochemical parameters sensing allows monitoring dynamic chemical thermal during cell's operation without any impact, which crucial making meaningful advancements This work provide access diagnostic tools guide rational design high‐safety batteries.

Language: Английский

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An overview of flexible sensors from ionic liquid-based gels

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 174, P. 117662 - 117662

Published: March 23, 2024

Language: Английский

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Ordered Vacancies as Sodium Ion Micropumps in Cu‐Deficient Copper Indium Diselenide to Enhance Sodium Storage

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: March 28, 2024

Unordered vacancies engineered in host anode materials cannot well maintain the uniform Na

Language: Английский

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Incombustible solid polymer electrolytes: A critical review and perspective

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 93, P. 264 - 281

Published: Jan. 21, 2024

Language: Английский

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Nonmetal Substitution in Interstitial Site of O3‐NaNi_0.5Mn_0.5O₂ Induces the Generation of a Nearly Zero Strain P2&O3 Biphasic Structure as Ultrastable Sodium‐Ion Cathode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 23, 2024

Abstract Co‐free O3‐type NaNi 0.5 Mn O 2 cathode material for sodium‐ion batteries has shown great promise due to its high theoretical capacity and plentiful Na reservoir. However, the rapid recession caused by harmful phase transition large volume strain severely restricts their practical application. Herein, obstacle is well addressed constructing a P2&O3 biphasic structure via customized boron‐doping strategy. The light‐weight boron doping in interstitial position reduces energy gap of formation P2 O3 structure, which induces biphase state. In addition, exhibits near zero lattice interlocking effect P2&O3, as identified situ X‐ray diffraction measurement. As result, it presents remarkable cyclability with retention 85.2% over 1000 cycles at rate 5 C. More importantly, pouch‐type full‐cell device can exhibit long cycling life 70.8% 150 0.1 This work offer new inspiration designing advanced sodium electrode materials light element future storage devices.

Language: Английский

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“One stone two birds” design for hollow spherical Na₄Fe₃(PO₄)₂P₂O₇/C cathode enabled high‐performance sodium‐ion batteries from iron rust

EcoMat, Journal Year: 2023, Volume and Issue: 5(10)

Published: July 2, 2023

Abstract Sodium‐ion battery (SIB) is considered as a revolutionary technology toward large‐scale energy storage applications. Developing cost‐effective cathode material well economical synthesis procedure key challenge for its commercialization. Herein, we develop facile and economic strategy to simultaneously remove rust from the surface of carbon steel achieve porous hollow spherical Na 4 Fe 3 (PO ) 2 P O 7 /C (HS‐NFPP/C). Benefiting desirable structure that fastens electronic/ionic transportation effectively accommodates volume expansion/contraction during discharge/charge process, as‐prepared exhibits outstanding rate capability ultralong cycle life. An extraordinarily high‐power density 32.3 kW kg −1 with an ultrahigh capacity retention 89.7% after 10 000 cycles are achieved. More significantly, Ah HC||HS‐NFPP/C full manifests impressive cycling stability. Therefore, this work provides sustainable approach massive production high‐performance cathode, which can be potentially commercialized SIB image

Language: Английский

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Challenges and Advances in Rechargeable Batteries for Extreme‐Condition Applications

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Oct. 17, 2023

Abstract Rechargeable batteries are widely used as power sources for portable electronics, electric vehicles and smart grids. Their practical performances are, however, largely undermined under extreme conditions, such in high‐altitude drones, ocean exploration polar expedition. These environmental conditions not only bring new challenges but also incur unique battery failure mechanisms. To fill the gap, it is of great importance to understand mechanisms different figure out key parameters that limit performances. In this review, authors start by investigating from viewpoints ionic/charge transfer, material/interface evolution electrolyte degradation conditions. This followed engineering approaches through electrode materials design, modification component optimization enhance Finally, a short perspective provided about future development rechargeable

Language: Английский

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Flame‐Retardant Polyurethane‐Based Solid‐State Polymer Electrolytes Enabled by Covalent Bonding for Lithium Metal Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(16)

Published: Dec. 29, 2023

Abstract Solid‐state lithium metal batteries (SSLMBs) have gained extensive attraction as one kind of next‐generation energy storage device. However, the drawbacks flammability, low mechanical strength, and ionic conductivity limit further development solid‐state polymer electrolytes (SPEs). In this work, a reactive flame‐retardant unit into framework via covalent bonding to create nonflammable stretchable polyurethane‐based SPEs is introduced. Meanwhile, strength backbone increased by grafting rigid benzene ring unit, which remarkably suppresses lithium‐dendrite growth. As result, these inflammable do not burn after contact with flames for 6 s. Furthermore, obtained SPE expands electrochemical stability window up 5.1 V. Small monomers containing bromine decompose on surface creating LiBr riched solid electrolyte interface (SEI). Li|SPEs|Li symmetric battery offers stable cycling life more than 2100 h at 0.2 mA cm −2 mAh . The LiNi 0.6 Co Mn O 2 |SPEs|Li cell equipped integrated cathode delivers 142.1 g −1 capacity 330 cycles 0.3 C 85.2% retention.

Language: Английский

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