Designing better electrolytes

Science, Journal Year: 2022, Volume and Issue: 378(6624)

Published: Dec. 8, 2022

Electrolytes and the associated interphases constitute critical components to support emerging battery chemistries that promise tantalizing energy but involve drastic phase structure complications. Designing better electrolytes holds key success of these batteries. As only component interfaces with every other in device, an electrolyte must satisfy multiple criteria simultaneously. These include transporting ions while insulating electrons between electrodes maintaining stability against extreme chemical natures: strongly oxidative cathode reductive anode. In most advanced batteries, two operate at potentials far beyond thermodynamic limits electrolytes, so therein has be realized kinetically through interphase formed from sacrificial reactions electrodes.

Language: Английский

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Enabling High‐Voltage “Superconcentrated Ionogel‐in‐Ceramic” Hybrid Electrolyte with Ultrahigh Ionic Conductivity and Single Li⁺‐Ion Transference Number

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(39)

Published: Aug. 13, 2022

High room-temperature ionic conductivities, large Li+ -ion transference numbers, and good compatibility with both Li-metal anodes high-voltage cathodes of the solid electrolytes are essential requirements for practical solid-state lithium-metal batteries. Herein, a unique "superconcentrated ionogel-in-ceramic" (SIC) electrolyte prepared by an in situ thermally initiated radical polymerization is reported. Solid-state static 7 Li NMR molecular dynamics simulation reveal roles ceramic local environments transport SIC electrolyte. The not only exhibits ultrahigh conductivity 1.33 × 10-3 S cm-1 at 25 °C, but also number as high 0.89, together low electronic 3.14 10-10 wide electrochemical stability window 5.5 V versus Li/Li+ . Applications Li||LiNi0.5 Co0.2 Mn0.3 O2 Li||LiFePO4 batteries further demonstrate rate long cycle life. This study, therefore, provides promising hybrid safe high-energy

Language: Английский

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Single‐Ion‐Conducting Hydrogel Electrolytes Based on Slide‐Ring Pseudo‐Polyrotaxane for Ultralong‐Cycling Flexible Zinc‐Ion Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(36)

Published: June 20, 2023

Flexible zinc-ion batteries (ZIBs) with high capacity and long cycle stability are essential for wearable electronic devices. Hydrogel electrolytes have been developed to provide ion-transfer channels while maintaining the integrity of ZIBs under mechanical strain. However, hydrogel matrices typically swollen aqueous salt solutions increase ionic conductivity, which can hinder intimate contact electrodes reduce properties. To address this, a single-Zn-ion-conducting electrolyte (SIHE) is by integrating polyacrylamide network pseudo-polyrotaxane structure. The SIHE exhibits Zn2+ transference number 0.923 conductivity 22.4 mS cm-1 at room temperature. Symmetric demonstrate stable Zn plating/stripping performance over 160 h, homogenous smooth deposition layer. Full cells La-V2 O5 cathodes exhibit 439 mA h g-1 0.1 A excellent retention 90.2% after 3500 cycles 5 . Moreover, flexible display electrochemical harsh conditions, such as bending, cutting, puncturing, soaking. This work provides simple design strategy single-ion-conducting electrolytes, could pave way long-life batteries.

Language: Английский

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Ion–Dipole Interaction Regulation Enables High‐Performance Single‐Ion Polymer Conductors for Solid‐State Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(32)

Published: June 21, 2022

Solid polymer electrolytes with large ionic conductivity, high transference number, and good interfacial compatibility electrodes are highly desired for solid-state batteries. However, unwanted polarizations side reactions occurring in traditional dual-ion conductors hinder their practical applications. Here, single-ion (SIPCs) exceptional selectivity Li-ion conduction (Li-ion number up to 0.93), room-temperature conductivity of about 10-4 S cm-1 , a wide electrochemical stability window (>4.5 V, vs Li/Li+ ) prepared by precisely regulating the ion-dipole interactions between Li+ carbonyl/cyano groups. The resulting SIPCs show an excellent Li metal during long-term cycling at room temperature 60 °C. LiFePO4 -based cells containing exhibit rate performance range from -20 90 By same way interaction regulation, sodium- potassium-based both cationic numbers also prepared. findings this work provide guidance development high-performance other metal-ion systems beyond .

Language: Английский

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2D Layered Nanomaterials as Fillers in Polymer Composite Electrolytes for Lithium Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(15)

Published: March 11, 2023

Abstract Polymer composite electrolytes (PCEs), i.e., materials combining the disciplines of polymer chemistry, inorganic and electrochemistry, have received tremendous attention within academia industry for lithium‐based battery applications. While PCEs often comprise 3D micro‐ or nanoparticles, this review thoroughly summarizes prospects 2D layered inorganic, organic, hybrid nanomaterials as active (ion conductive) passive (nonion fillers in PCEs. The synthetic nanofillers covered here include graphene oxide, boron nitride, transition metal chalcogenides, phosphorene, MXenes. Furthermore, use naturally occurring clay minerals, such double hydroxides silicates, is also detailed considering their impact on cell performance. Despite dominance materials, organic counterparts, covalent frameworks metal–organic are identified tuneable PCE. Hence, gives an overview plethora options available selective development both resulting PCEs, which can revolutionize field polymer‐based solid‐state implementation lithium post‐lithium batteries.

Language: Английский

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Practical considerations for enabling Li|polymer electrolyte batteries

Joule, Journal Year: 2023, Volume and Issue: 7(7), P. 1471 - 1495

Published: June 30, 2023

Language: Английский

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Developing Single‐Ion Conductive Polymer Electrolytes for High‐Energy‐Density Solid State Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: Aug. 30, 2023

Abstract Single‐ion conductive polymer electrolytes (SICPEs) with a cationic transference number ( t Li + ) close to unity exhibit specific advantages in solid‐state batteries (SSBs), including mitigating the ion concentration gradient and derived problems, suppressing growth of lithium dendrites, improving utilization cathode materials rate performance SSBs. However, application SICPEs remains major challenges, i.e., ionic conductivity is inferior at room temperature. Therefore, recent accomplishments ambient be compatible high are discussed this review. In particular, some strategies delocalizing charges polyanions, designing highly matrix, utilizing synergistic effects focused shed light on further development solid for Finally, multifunctional species view mechanical contact and/or charge transfer problems solid–solid interface

Language: Английский

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Recent Advances of Transition Metal Dichalcogenides‐Based Materials for Energy Storage Devices, in View of Monovalent to Divalent Ions

The Chemical Record, Journal Year: 2023, Volume and Issue: 24(1)

Published: June 26, 2023

Abstract The fast growth of electrochemical energy storage (EES) systems necessitates using innovative, high‐performance electrode materials. Among the various EES devices, rechargeable batteries (RBs) with potential features like high density and extensive lifetime are well suited to meet rapidly increasing demands. Layered transition metal dichalcogenides (TMDs), typical two dimensional (2D) nanomaterial, considered auspicious materials for RBs because their layered structures large specific surface areas (SSA) that benefit quick ion transportation. This review summarizes highlights recent advances in TMDs improved performance RBs. Through novel engineering functionalization used RBs, we briefly discuss properties, characterizations, electrochemistry phenomena TMDs. We summarised multiple techniques, nanocomposites receives special attention. In conclusion, issues promising upcoming research openings developing TMDs‐based electrodes discussed.

Language: Английский

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Design of functional binders for high-specific-energy lithium-ion batteries: from molecular structure to electrode properties

Industrial Chemistry and Materials, Journal Year: 2023, Volume and Issue: 2(2), P. 191 - 225

Published: Sept. 29, 2023

This review systematically summarizes the research progress of functional binders in lithium-ion batteries and elucidates main functions advanced to deal with challenges high-specific-energy electrodes.

Language: Английский

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Designing single-ion conductive electrolytes for aqueous zinc batteries

Matter, Journal Year: 2024, Volume and Issue: 7(6), P. 1928 - 1949

Published: April 18, 2024

Language: Английский

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