Beneficial impact of lithium bis(oxalato)borate as electrolyte additive for high‐voltage nickel‐rich lithium‐battery cathodes

Wu, Fanglin; Mullaliu, Angelo; Diemant, Thomas; Stępień, Dominik; Parac-Vogt, Tatjana; Kim, Jae Kwang; Bresser, Dominic; Kim, Guk‐Tae; Passerini, Stefano

doi:10.1002/inf2.12462

Cited by 12 publications

(1 citation statement)

References 60 publications

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“…It helps maintain the cathode surface intact, protect transition‐metal ions from dissolving, and prevent excessive electrolyte consumption during the charge and discharge process. [ 111–114 ] Regarding the components of the CEI film, some inorganic species such as LiF and Li x PF y O z are insoluble during the electrochemical process, [ 115 ] while Li 2 CO 3 [ 116 ] and some organic species like ROCOOLi [ 117,118 ] are believed freely soluble. Commercial additives such as 1,3‐propyl sulfonolactone (PS) and Dioxathiolane 2,2‐dioxide have been extensively used, however, their application is impeded by issues to thermal stability.…”

Section: Electrolytes Design For Enhancing High Temperature Adaptabilitymentioning

confidence: 99%

Electrolytes Design for Extending the Temperature Adaptability of Lithium‐Ion Batteries: from Fundamentals to Strategies

Wan,

Ma,

Wang

et al. 2024

Advanced Materials

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With the continuously growing demand for wide‐range applications, lithium‐ion batteries (LIBs) have been increasingly required to work under conditions that deviate from room temperature. However, commercial electrolytes exhibit low thermal stability at high temperatures and poor dynamic properties at low temperatures, hindering the operation of LIBs under extreme conditions. The bottleneck restricting the practical applications of LIBs has promoted researchers to pay more attention to developing a series of innovative electrolytes. This review primarily covers the design of electrolytes for LIBs from a temperature adaptability perspective. Firstly, we elaborate on the fundamentals of electrolytes concerning temperature, including donor number, dielectric constant, viscosity, conductivity, ionic transport, and theoretical calculations. Secondly, prototypical examples, such as lithium salts, solvent structures, additives, and interfacial layers in both liquid and solid electrolytes, are presented to explain how these factors can affect the electrochemical behavior of LIBs at high or low temperatures. Meanwhile, the principles and limitations of electrolyte design are discussed under the corresponding temperature conditions. Finally, a summary and outlook regarding electrolyte design to extend the temperature adaptability of LIBs are proposed.This article is protected by copyright. All rights reserved

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Section: Electrolytes Design For Enhancing High Temperature Adaptabilitymentioning

confidence: 99%

Electrolytes Design for Extending the Temperature Adaptability of Lithium‐Ion Batteries: from Fundamentals to Strategies

Wan,

Ma,

Wang

et al. 2024

Advanced Materials

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Fluorine‐Free Lithium‐Ion Capacitor with Enhanced Sustainability and Safety Based on Bio‐Based ƴ‐Valerolactone and Lithium Bis(Oxalato)Borate Electrolyte

Teoh,

Melchiorre,

Darlami Magar

et al. 2024

Advanced Materials

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In this work, the properties of a novel electrolyte based on the combination of bio‐based ƴ‐valerolactone (GVL) solvent with lithium bis(oxalato)borate (LiBOB) salt and its use for lithium‐ion capacitors (LICs) are presented. It is shown that the 1 M LiBOB in GVL electrolyte displays good transport properties, high thermal stability, and the ability to prevent anodic dissolution. Its impact on the performance of both battery‐type and capacitive‐type electrodes is evaluated. In this regard, special attention is paid to the filming properties associated with LiBOB and GVL decomposition at the electrode surfaces. To the best of our knowledge, the full‐cell devices assembled in this study are the first example of a fluorine‐free LIC. These devices exhibit a favorable energy‐to‐power ratio, delivering 80 Wh kg−1AM at 10,000 W kg‐1AM along with excellent cycling stability, retaining 80% of the initial capacitance after 25,000 cycles. Furthermore, post‐mortem analysis of the LIC electrodes is conducted to gain deeper insights into the degradation mechanisms within the device.This article is protected by copyright. All rights reserved

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Enabling Fluorine‐Free Lithium‐Ion Capacitors and Lithium‐Ion Batteries for High‐Temperature Applications by the Implementation of Lithium Bis(oxalato)Borate and Ethyl Isopropyl Sulfone as Electrolyte

Kreth,

Köps,

Leibing

et al. 2024

Advanced Energy Materials

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A novel fluorine‐free electrolyte comprising a solution of lithium bis(oxalato)borate in ethyl isopropyl sulfone is presented. It is characterized by its safety and non‐toxic properties, along with the capability to effectively suppress the anodic dissolution of aluminum. Successful high‐temperature application of this electrolyte in combination with various capacitor‐ and battery‐like electrode materials is shown. Further utilization in a lithium‐ion capacitor and a lithium‐ion battery is demonstrated. To the best of the knowledge, the lithium‐ion capacitor presented in this work represents the first entirely fluorine‐free device suitable for high‐temperature applications. When operating at 60 °C, this device delivers a maximum energy output of 169 Wh kg−1AM at a power of 200 W kg−1AM and even 80 Wh kg1AM at 10 kW kg‐1AM, along with the ability to retain 80% of its initial capacitance after 3500 cycles at 5 A g−1. As such, this novel electrolyte is a promising alternative to conventional fluorine‐containing configurations since its performance is capable to match or even surpass that of most similar laboratory‐scale LICs.

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Beneficial impact of lithium bis(oxalato)borate as electrolyte additive for high‐voltage nickel‐rich lithium‐battery cathodes

Cited by 12 publications

References 60 publications

Electrolytes Design for Extending the Temperature Adaptability of Lithium‐Ion Batteries: from Fundamentals to Strategies

Electrolytes Design for Extending the Temperature Adaptability of Lithium‐Ion Batteries: from Fundamentals to Strategies

Fluorine‐Free Lithium‐Ion Capacitor with Enhanced Sustainability and Safety Based on Bio‐Based ƴ‐Valerolactone and Lithium Bis(Oxalato)Borate Electrolyte

Enabling Fluorine‐Free Lithium‐Ion Capacitors and Lithium‐Ion Batteries for High‐Temperature Applications by the Implementation of Lithium Bis(oxalato)Borate and Ethyl Isopropyl Sulfone as Electrolyte

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