Designing modern aqueous batteries

Nature Reviews Materials, Journal Year: 2022, Volume and Issue: 8(2), P. 109 - 122

Published: Nov. 15, 2022

Language: Английский

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Emerging Era of Electrolyte Solvation Structure and Interfacial Model in Batteries

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(1), P. 490 - 513

Published: Jan. 3, 2022

Over the past two decades, solid–electrolyte interphase (SEI) layer that forms on an electrode's surface has been believed to be pivotal for stabilizing performance in lithium-ion batteries (LIBs). However, more and researchers currently are realizing metal-ion solvation structure (e.g., Li+) electrolytes derived interfacial model (i.e., desolvation process) can affect significantly. Thus, herein we summarize recent research focused how discover importance of electrolyte's structure, develop a quantitative describe construct understand performance, apply these theories design electrolytes. We provide timely review scientific relationship between molecular interactions metal ions, anions, solvents which viewpoint differs from SEI interpretations before. These discoveries may herald new, post-SEI era due their significance guiding LIBs improvement, as well developing other beyond.

Language: Английский

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Liquid electrolyte: The nexus of practical lithium metal batteries

Joule, Journal Year: 2022, Volume and Issue: 6(3), P. 588 - 616

Published: Jan. 20, 2022

Language: Английский

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Review of modification strategies in emerging inorganic solid-state electrolytes for lithium, sodium, and potassium batteries

Joule, Journal Year: 2022, Volume and Issue: 6(3), P. 543 - 587

Published: March 1, 2022

Language: Английский

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Solvent-Free Approach for Interweaving Freestanding and Ultrathin Inorganic Solid Electrolyte Membranes

ACS Energy Letters, Journal Year: 2021, Volume and Issue: 7(1), P. 410 - 416

Published: Dec. 27, 2021

All-solid-state batteries (ASSBs) have gained considerable attention due to their inherent safety and high energy density. However, fabricating ultrathin freestanding solid electrolyte membranes for practical all-solid-state pouch cells remains challenging. In this work, polytetrafluoroethylene (PTFE) fibrilization was utilized interweave inorganic electrolytes (SEs) into membranes. Representative SE membranes, including Li6PS5Cl, Li3InCl6, Li6.5La3Zr1.5Ta0.5O12, demonstrate not only a thickness of 15–20 μm but also room-temperature ionic conductivity (>1 mS cm–1). with bilayer Li6PS5Cl Li3InCl6 deliver capacity 124.3 mAh g–1 at 0.1 C an initial Coulombic efficiency 89.4%. Furthermore, using 20 LLZTO membrane as ceramic separator, solid-state cell high-capacity LiNi0.8Mn0.1Co0.1O2 electrode (>3 cm–2) displays both exceptional cycling stability unprecedented safety. We believe that solvent-free technology would be feasible cost-effective means transferring ASSB from the laboratory factory.

Language: Английский

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Localized Water‐In‐Salt Electrolyte for Aqueous Lithium‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(36), P. 19965 - 19973

Published: June 29, 2021

Abstract Water‐in‐salt (WIS) electrolytes using super‐concentrated organic lithium (Li) salts are of interest for aqueous Li‐ion batteries. However, the high salt cost, viscosity, poor wettability, and environmental hazards remain a great challenge. Herein, we present localized water‐in‐salt (LWIS) electrolyte based on low‐cost nitrate (LiNO 3 ) 1,5‐pentanediol (PD) as inert diluent. The addition PD maintains solvation structure WIS electrolyte, improves stability via hydrogen‐bonding interactions with water NO − molecules, reduces total concentration. By in situ gelling LWIS tetraethylene glycol diacrylate (TEGDA) monomer, window can be further expanded to 3.0 V. as‐developed Mo 6 S 8 |LWIS gel electrolyte|LiMn 2 O 4 (LMO) batteries delivered outstanding cycling performance an average Coulombic efficiency 98.53 % after 250 cycles at 1 C.

Language: Английский

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A synergistic exploitation to produce high-voltage quasi-solid-state lithium metal batteries

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Sept. 30, 2021

The current Li-based battery technology is limited in terms of energy contents. Therefore, several approaches are considered to improve the density these storage devices. Here, we report combination a heteroatom-based gel polymer electrolyte with hybrid cathode comprising Li-rich oxide active material and graphite conductive agent produce high-energy "shuttle-relay" Li metal battery, where additional capacity generated from electrolyte's anion shuttling at high voltages. electrolyte, prepared via situ polymerization an all-fluorinated shows adequate ionic conductivity (around 2 mS cm-1 25 °C), oxidation stability (up 5.5 V vs Li/Li+), compatibility safety aspects (i.e., non-flammability). polymeric allows for reversible insertion hexafluorophosphate anions into dual-ion mechanism) after removal ions rocking-chair mechanism).

Language: Английский

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Non‐Flammable Electrolyte Enables High‐Voltage and Wide‐Temperature Lithium‐Ion Batteries with Fast Charging

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(8)

Published: Dec. 26, 2022

Abstract Electrolyte design has become ever more important to enhance the performance of lithium‐ion batteries (LIBs). However, flammability issue and high reactivity conventional electrolytes remain a major problem, especially when LIBs are operated at voltage extreme temperatures. Herein, we novel non‐flammable fluorinated ester electrolyte that enables cycling stability in wide‐temperature variations (e.g., −50 °C–60 °C) superior power capability (fast charge rates up 5.0 C) for graphite||LiNi 0.8 Co 0.1 Mn O 2 (NCM811) battery (i.e., >4.3 V vs. Li/Li + ). Moreover, this work sheds new light on dynamic evolution interaction among Li , solvent, anion molecular level. By elucidating fundamental relationship between solvation structure electrochemical performance, can facilitate development high‐safety high‐energy‐density operating harsh conditions.

Language: Английский

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Nonflammable Polyfluorides‐Anchored Quasi‐Solid Electrolytes for Ultra‐Safe Anode‐Free Lithium Pouch Cells without Thermal Runaway

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(51)

Published: Sept. 6, 2023

The safe operation of rechargeable batteries is crucial because numerous instances fire and explosion mishaps. However, battery chemistry involving metallic lithium (Li) as the anode prone to thermal runaway in flammable organic electrolytes under abusive conditions. Herein, an situ encapsulation strategy proposed construct nonflammable quasi-solid through radical polymerization a hexafluorobutyl acrylate (HFBA) monomer pentaerythritol tetraacrylate (PETEA) crosslinker. system eliminates inherent flammability ether with zero self-extinguishing time owing gas-phase capturing ability HFBA. Additionally, graphitized carbon layer generated during decomposition PETEA at high temperatures obstructs heat oxygen required for combustion. When coupled Au-modified reduced graphene oxide anodic current collectors sulfide cathodes, assembled anode-free Li-metal cell based on electrolyte exhibits no signs expansion or gas generation cycling, eliminated multiple mechanical, electrical, abuse scenarios even rigorous strikes. This configuration gas- condensed-phase flame-retardant mechanisms can drive technological leap pouch cells secure practical applications necessary power this society manner.

Language: Английский

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Thermal-responsive, super-strong, ultrathin firewalls for quenching thermal runaway in high-energy battery modules

Energy storage materials, Journal Year: 2021, Volume and Issue: 40, P. 329 - 336

Published: May 24, 2021

Language: Английский

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