Improved Cycling Stability of Lithium‐Metal Anode with Concentrated Electrolytes Based on Lithium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide

Ma, Qiang; Fang, Zheng; Pin, Liu; Ma, Jie; Qi, Xiangdong; Feng, Wenfang; Nie, Jun; Hu, Yong‐Sheng; Li, Hong; Huang, Xuejie; Chen, Liquan; Zhou, Zhibin

doi:10.1002/celc.201500520

Cited by 74 publications

(53 citation statements)

References 37 publications

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“…The general strategy in this regard is to tailor the SSE properties so that it can facilitate the pairing of a Li metal anode with a cathode material that can operate at high voltages. While there are a number of challenges in tuning the properties of a SSE to facilitate stable and high capacity cycling of a Li metal anode, great progress has been made in this area over the last decade, particularly with the high concentration sulfonylimide‐based anion liquid electrolytes (FSI, TFSI, and FTFSI) . However, less attention has been devoted to overcoming the set of challenges that are present at the high voltage cathode.…”

Section: Progress and Challenges For Prototyping High Energy Sslbsmentioning

confidence: 99%

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

et al. 2020

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201905219.With increasing demands for safe, high capacity energy storage to support personal electronics, newer devices such as unmanned aerial vehicles, as well as the commercialization of electric vehicles, current energy storage technologies are facing increased challenges. Although alternative batteries have been intensively investigated, lithium (Li) batteries are still recognized as the preferred energy storage solution for the consumer electronics markets and next generation automobiles. However, the commercialized Li batteries still have disadvantages, such as low capacities, potential safety issues, and unfavorable cycling life. Therefore, the design and development of electromaterials toward high-energy-density, long-life-span Li batteries with improved safety is a focus for researchers in the field of energy materials. Herein, recent advances in the development of novel organic electrolytes are summarized toward solid-state Li batteries with higher energy density and improved safety. On the basis of new insights into ionic conduction and design principles of organic-based solid-state electrolytes, specific strategies toward developing these electrolytes for Li metal anodes, high-energy-density cathode materials (e.g., high voltage materials), as well as the optimization of cathode formulations are outlined. Finally, prospects for next generation solid-state electrolytes are also proposed.

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Section: Progress and Challenges For Prototyping High Energy Sslbsmentioning

confidence: 99%

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

et al. 2020

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“…208 After this path-breaking work, it was reported that stable Li metal deposition and stripping reactions in HCEs with ether solvents were observed. [209][210][211] At high concentrations, the LiTFSI/DOL+DME electrolyte could not only effectively suppress dendrite formation at the metallic Li negatrode but also inhibit the dissolution of lithium polysulphide, resulting in excellent cycling performance and improved safety. 209 In this case, for unknown reasons, a rather low columbic efficiency of ca.…”

Section: Highly Concentrated Electrolytesmentioning

confidence: 99%

Electrolytes for electrochemical energy storage

Xia

et al. 2017

Mater. Chem. Front.

233

116

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Journal NameThis journal is © The Royal Society of Chemistry 20xxJ. Name., 2013, 00, 1-3 | 1 Electrolyte is a key component of electrochemical energy storage (EES) devices and its properties greatly affect the energy capacity, rate performance, cyclability and safety of all EES devices. This article offers a critical review of recent progresses and challenges in electrolyte research and development particularly for supercapacitors and supercapatteries, recharegable batteries (such as lithium-ion and sodium-ion batteries), and redox flow batteries (including fuel cells in a broad sense). The review will focus on liquid electrolytes, particularly aqueous and organic electrolytes, ionic liquids and molten salts. Influences of electrolyte properties on the performances of different EES devices are discussed in detail.

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“…Among these, ether-based electrolytes present the highest CE and the lowest overpotential, effectively suppressing dendrite growth owing to their low reactivity with Li metal. 2,4,12,14,17,22,[29][30][31][32][33][34][35] Especially, the highest cycling CE of 99.1% was recently realized in 1,2-dimethoxyethane (DME). 4 However, ether-based electrolytes are intrinsically unstable against oxidation on cathode surfaces, as characterized by their typical anodic limits of <4 V, 36 which is much lower…”

Section: Introductionmentioning

confidence: 99%

Highly Fluorinated Interphases Enable High-Voltage Li-Metal Batteries

Fan

Chen

et al. 2018

Chem

791

628

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Li metal is regarded as the ''Holy Grail'' electrode because of its highest specific capacity and lowest electrochemical potential. However, challenges arising from the low Coulombic efficiency (CE) and dendritic nature of Li metal in carbonate electrolytes remain to be resolved. Here, by increasing LiFSI salt concentration in the carbonate electrolyte, we successfully increased the CE to 99.3% while suppressing Li dendrite formation. An NMC622jjLi cell was paired and showed excellent cycling performance.

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Improved Cycling Stability of Lithium‐Metal Anode with Concentrated Electrolytes Based on Lithium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide

Cited by 74 publications

References 37 publications

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

Electrolytes for electrochemical energy storage

Highly Fluorinated Interphases Enable High-Voltage Li-Metal Batteries

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