Ultralow-Concentration Electrolyte for Na-Ion Batteries

Li, Yuqi; Yang, Yang; Lu, Yaxiang; Zhou, Quan; Qi, Xiangdong; Meng, Qinghan; Rong, Xiaohui; Chen, Liquan; Hu, Yongsheng

doi:10.1021/acsenergylett.0c00337

Cited by 133 publications

(94 citation statements)

References 16 publications

(17 reference statements)

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“…Overall, these data for a wide range of salt concentrations in the most common electrolyte solvents should pave the way for further electrochemical studies, not the least owing to the results on ''ultralow'' concentrated SIB electrolytes. 86…”

Section: Discussionmentioning

confidence: 99%

Towards standard electrolytes for sodium-ion batteries: physical properties, ion solvation and ion-pairing in alkyl carbonate solvents

Monti

Jónsson

Boschin

et al. 2020

Phys. Chem. Chem. Phys.

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Section: Discussionmentioning

confidence: 99%

Towards standard electrolytes for sodium-ion batteries: physical properties, ion solvation and ion-pairing in alkyl carbonate solvents

Monti

Jónsson

Boschin

et al. 2020

Phys. Chem. Chem. Phys.

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“…Li et al reported an ultra‐low salt concentration electrolyte by dissolving 0.3 m NaPF 6 in EC/PC (1:1 in vol%) to reduce the electrolyte cost and expand the operation temperature range (−30 to 55 °C). [ 140 ] The dilute electrolyte chemistry provides a new path for rechargeable batteries under extreme operation conditions. Future research should focus on the trade‐off among the safety, electronic conductivity, temperature adaptability, and the price of electrolytes.…”

Section: Strategies and Concepts For High‐safety Materials Designmentioning

confidence: 99%

Materials Design for High‐Safety Sodium‐Ion Battery

Yang

Xin

Mai

et al. 2020

Advanced Energy Materials

311

201

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Sodium‐ion batteries, with their evident superiority in resource abundance and cost, are emerging as promising next‐generation energy storage systems for large‐scale applications, such as smart grids and low‐speed electric vehicles. Accidents related to fires and explosions for batteries are a reminder that safety is prerequisite for energy storage systems, especially when aiming for grid‐scale use. In a typical electrochemical secondary battery, the electrical power is stored and released via processes that generate thermal energy, leading to temperature increments in the battery system, which is the main cause for battery thermal abuse. The investigation of the energy generated during the chemical/electrochemical reactions is of paramount importance for battery safety, unfortunately, it has not received the attention it deserves. In this review, the fundamentals of the heat generation, accumulation, and transportation in a battery system are summarized and recent key research on materials design to improve sodium‐ion battery safety is highlighted. Several effective materials design concepts are also discussed. This review is designed to arouse the attention of researcher and scholars and inspire further improvements in battery safety.

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“…[112,113] Very recently, Hu's group, for the first time, proposed the use of an ultralow-concentration electrolyte (0.3 m) for high-performance NIBs, profiting from dilute electrolyte chemistry. [114] A stable organic-dominated SEI was formed due to the decomposition of ethylene carbonate/ propylene carbonate (EC/PC), which was different from that in high-concentration electrolytes. [115] This attractive electrolyte formulation provides new insights for electrolyte engineering from an inverse design and paves the way for the development of other rechargeable batteries.…”

Section: Concentration Effectsmentioning

confidence: 99%

Solid Electrolyte Interphases on Sodium Metal Anodes

Bao

Wang

Liu

et al. 2020

Adv Funct Materials

167

138

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Sodium metal anodes have attracted significant attention due to their high specific capacity (1166 mA h g −1), low redox potential (−2.71 V vs the standard hydrogen electrode), and abundant natural resources. Nevertheless, unstable solid electrolyte interphases (SEI) and uncontrolled dendrite growth critically hinder their commercialization. Notably, SEIs play a critical role in regulating Na deposition and improving the cycling stability of rechargeable Na metal batteries. Recently, SEI research on Na metal anodes has been intensively conducted worldwide; thus, a comprehensive review is necessary. Herein, initially, the fundamentals of SEI and the related issues induced by its intrinsic instability are discussed. Thereafter, advanced characterization techniques that unveil the morphological evolution and interfacial chemistry of Na metal anodes are presented. Subsequently, efficient strategies, including liquid electrolyte engineering, artificial SEI, and solid-state electrolyte technology, to stabilize SEI films are outlined. Finally, key aspects and prospects in the development of SEI for Na metal anodes are highlighted. It is believed that this review will serve to further advance the understanding and development of SEIs for Na metal anodes.

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Ultralow-Concentration Electrolyte for Na-Ion Batteries

Cited by 133 publications

References 16 publications

Towards standard electrolytes for sodium-ion batteries: physical properties, ion solvation and ion-pairing in alkyl carbonate solvents

Towards standard electrolytes for sodium-ion batteries: physical properties, ion solvation and ion-pairing in alkyl carbonate solvents

Materials Design for High‐Safety Sodium‐Ion Battery

Solid Electrolyte Interphases on Sodium Metal Anodes

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