Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO_2 batteries by a sulfonamide-based electrolyte

Xue Weijiang; Gao Rui; Shi Zhe; Xiao Xianghui; Zhang Wenxu; Zhang Yirui; Zhu Yun Guang; Waluyo Iradwikanari; Li Yao; Hill Megan R.; Zhu Zhi; Li Sa; Kuznetsov Oleg; Zhang Yiman; Lee Wah-Keat; Hunt Adrian; Harutyunyan Avetik; Shao-Horn Yang; Johnson Jeremiah A.; Li Ju

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Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO_2 batteries by a sulfonamide-based electrolyte

机译：稳定电极电解质接口以通过磺酰胺基电解质实现高压Li || LiCoO_2电池

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High-voltage lithium-metal batteries (LMBs) with LiCoO2 (LCO) as the cathode have high volumetric and gravimetric energy densities. However, it remains a challenge for stable cycling of LCO 4.5 V-Li. Here we demonstrate that a rationally designed sulfonamide-based electrolyte can greatly improve the cycling stability at high voltages up to 4.7 V-Li by stabilizing the electrode-electrolyte interfaces (EEIs) on both the Li-metal anode (LMA) and high-voltage LCO cathode. With the sulfonamide-based electrolyte, commercial LCO cathodes retain 89% and 85% of their capacities after 200 and 100 cycles under high charging voltages of 4.55 V-Li and 4.6 V-Li, respectively, significantly outperforming traditional carbonate-based electrolytes. The surface degradation, impedance growth, and detrimental side reactions in terms of gas evolution and Co dissolution are well suppressed. Our work demonstrates a promising strategy for designing new electrolytes to realize high-energy Li||LCO batteries.

机译：具有LiCoO2（LMB）的高压锂金属电池（LMB），因为阴极具有高容量和重量能量密度。然而，稳定循环LCO＆GT的循环仍然是一个挑战。4.5 V-Li。在这里，我们证明，通过在Li金属阳极（LMA）和高压上，通过稳定电极 - 电解质界面（EEIS）和高压，合理设计的磺酰胺基电解质可以大大提高高达4.7V-Li的高压下的循环稳定性。 LCO阴极。随着磺酰胺基电解质，商业LCO阴极在2005V-Li和4.6V-Li的高充电电压下保留了200和100次循环后的89％和85％的能力，显着优于传统的碳酸盐基电解质。在气体进化和共同溶解方面，表面降解，阻抗生长和有害的副反应得到良好的抑制。我们的作品展示了设计新电解质的有希望的策略，以实现高能量Li || LCO电池。

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《Energy & environmental science》 |2021年第11期|6030-6040|共11页
作者
Xue Weijiang; Gao Rui; Shi Zhe; Xiao Xianghui; Zhang Wenxu; Zhang Yirui; Zhu Yun Guang; Waluyo Iradwikanari; Li Yao; Hill Megan R.; Zhu Zhi; Li Sa; Kuznetsov Oleg; Zhang Yiman; Lee Wah-Keat; Hunt Adrian; Harutyunyan Avetik; Shao-Horn Yang; Johnson Jeremiah A.; Li Ju;
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MIT Dept Nucl Sci & Engn 77 Massachusetts Ave Cambridge MA 02139 USA;

MIT Dept Nucl Sci & Engn 77 Massachusetts Ave Cambridge MA 02139 USA;

MIT Dept Nucl Sci & Engn 77 Massachusetts Ave Cambridge MA 02139 USA|MIT Dept Mat Sci & Engn Cambridge MA 02139 USA;

Brookhaven Natl Lab Natl Synchrotron Light Source II Upton NY 11973 USA;

MIT Dept Chem Cambridge MA 02139 USA;

MIT Dept Mech Engn Cambridge MA 02139 USA;

MIT Elect Res Lab Cambridge MA 02139 USA;

Brookhaven Natl Lab Natl Synchrotron Light Source II Upton NY 11973 USA;

Shanghai Jiao Tong Univ State Key Lab Met Matrix Composites Shanghai 200240 Peoples R China;

MIT Dept Chem Cambridge MA 02139 USA;

MIT Dept Nucl Sci & Engn 77 Massachusetts Ave Cambridge MA 02139 USA;

Tongji Univ Inst New Energy Vehicles Sch Mat Sci & Engn Shanghai 201804 Peoples R China;

Honda Res Inst USA Inc San Jose CA 95134 USA;

Honda Res Inst USA Inc San Jose CA 95134 USA;

Brookhaven Natl Lab Natl Synchrotron Light Source II Upton NY 11973 USA;

Brookhaven Natl Lab Natl Synchrotron Light Source II Upton NY 11973 USA;

Honda Res Inst USA Inc San Jose CA 95134 USA;

MIT Dept Mat Sci & Engn Cambridge MA 02139 USA|MIT Dept Mech Engn Cambridge MA 02139 USA|MIT Elect Res Lab Cambridge MA 02139 USA;

MIT Dept Chem Cambridge MA 02139 USA;

MIT Dept Nucl Sci & Engn 77 Massachusetts Ave Cambridge MA 02139 USA|MIT Dept Mat Sci & Engn Cambridge MA 02139 USA;

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6. LiCoO_2 electrode/electrolyte interface of Li-ion rechargeable batteries investigated by in situ electrochemical impedance spectroscopy [J] . Masayuki Itagaki, Nao Kobari, Sachiko Yotsuda, Journal of power sources . 2005,第Sep期

机译：锂离子可充电电池的LiCoO_2电极/电解质界面的原位电化学阻抗谱研究
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机译：固体电解质/电极接口：通过UHV-aFm，表面光谱和计算机模拟分析的原子行为。氧化物薄膜电池中阴极/电解质界面的计算和实验研究;和原子级

Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO_2 batteries by a sulfonamide-based electrolyte

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