Trace ethylene carbonate-mediated low-concentration ether-based electrolytes for high-voltage lithium metal batteries

Chen, Yinghua; Ma, Zheng; Wang, Yuqi; Kumar, Pushpendra; Zhao, Fei; Cai, Tao; Cao, Zhen; Cavallo, Luigi; Cheng, Haoran; Li, Qian; Ming, Jun

doi:10.1039/d4ee01831a

Energy Environ. Sci.

2024

DOI: 10.1039/d4ee01831a

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Trace ethylene carbonate-mediated low-concentration ether-based electrolytes for high-voltage lithium metal batteries

Yinghua Chen,

Zheng Ma,

Yuqi Wang

et al.

Abstract: A solubilization and stabilization effect of trace ethylene carbonate solvent assisted by the varied molecule-ion interaction was discovered in ether-based electrolyte, enabling the 80 μm Li || LiNi0.8Co0.1Mn0.1O2 full-cell operate at 4.5 V stably.

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Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂

Yang,

Zhao,

Qin

et al. 2024

ACS Energy Lett.

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Modulating a solid electrolyte interphase (SEI) through additives represents a crucial approach for stable operation of cathode materials. Traditional perspectives focus on the electrochemical decomposition of the additive itself while underestimating the reactivity and catalytic ability from cathode surfaces. Inspired by the sulfurcontaining species causing catalyst poisoning, the catalytic effects of LiCoO 2 (LCO) for the sulfur-based molecule (−SO x ) additives have been investigated. We elucidate the mechanism of additives by assessing multiple interactions with the LCO surface, which are primarily characterized by chemical ring-opening reactions. Furthermore, decreasing the saturated carbon in molecules can enhance its reactivity, while the −SO x groups deactivate both the lattice oxygen and transition metal center through dual-site bond formation. Benefiting from the chemically passivated surface, the sulfonate additive enables LCO cycling at a high temperature and a high voltage of 4.65 V. This provides new insights into the mechanisms for stabilizing the cathode interface and molecular design for additives.

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Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂

Yang,

Zhao,

Qin

et al. 2024

ACS Energy Lett.

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show abstract

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Trace ethylene carbonate-mediated low-concentration ether-based electrolytes for high-voltage lithium metal batteries

Abstract: A solubilization and stabilization effect of trace ethylene carbonate solvent assisted by the varied molecule-ion interaction was discovered in ether-based electrolyte, enabling the 80 μm Li || LiNi0.8Co0.1Mn0.1O2 full-cell operate at 4.5 V stably.

Cited by 1 publication

References 70 publications

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂

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Trace ethylene carbonate-mediated low-concentration ether-based electrolytes for high-voltage lithium metal batteries

Abstract: A solubilization and stabilization effect of trace ethylene carbonate solvent assisted by the varied molecule-ion interaction was discovered in ether-based electrolyte, enabling the 80 μm Li || LiNi0.8Co0.1Mn0.1O2 full-cell operate at 4.5 V stably.

Cited by 1 publication

References 70 publications

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO2

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO2

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Product

Resources

About

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂

Chemically Active Sulfonate Additive with Transition Metal and Oxygen Dual-Site Deactivation for High-Voltage LiCoO₂