High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

Wu Yu; Ren Dongsheng; Liu Xiang; Xu Gui-Liang; Feng Xuning; Zheng Yuejiu; Li Yalun; Yang Min; Peng Yong; Han Xuebing; Wang Li; Chen Zonghai; Ren Yang; Lu Languang; He Xiangming; Chen Jitao; Amine Khalil; Ouyang Minggao

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High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

机译：高压和高安全性实用锂电池，可自由碳酸亚乙酯电解质

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Serious safety issues are impeding the widespread adoption of high-energy lithium-ion batteries for transportation electrification and large-scale grid storage. Herein, a triple-salt ethylene carbonate (EC) free electrolyte for high-safety and high-energy pouch-type LiNi0.8Mn0.1Co0.1O2|graphite (NMC811|Gr) cells is reported. This EC-free electrolyte can effectively stabilize the NMC811 surface under high potential (up to 4.5 V), as well as generate a stable interphase to achieve a superior compatibility with the Gr anode. The electrolyte strategy enables significantly enhanced intrinsic safety (trigger temperature of thermal runaway (TR) increased by 67.0 degrees C), excellent electrochemical properties (4.2V, approximate to 100% after 200 cycles), and superior high voltage stability (4.5 V, 82.1% after 200 cycles). The work opens up a new avenue for developing novel electrolyte systems to build safer high-energy batteries for practical applications.

机译：严重的安全问题正在妨碍高能锂离子电池的运输电气化和大型网格储存的广泛采用。这里，报道了用于高安全性和高能袋型LINI0.8MN0.1CO0.1O2的三盐碳酸乙酯（EC）游离电解质。该无EC电解质可以在高电位（高达4.5V）下有效地稳定NMC811表面，以及产生稳定的相互作用，以实现与GR阳极的优异相容性。电解质策略能够显着提高内在安全性（热失控的触发温度（TR）增加67.0℃），优异的电化学性质（4.2V，近似为100次循环后100％），高电压稳定性（4.5V，82.1 200次循环后％）。该工作开辟了开发新型电解质系统的新大道，为实际应用构建更安全的高能量电池。

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来源
《Advanced energy materials》 |2021年第47期|2102299.1-2102299.10|共10页
作者
Wu Yu; Ren Dongsheng; Liu Xiang; Xu Gui-Liang; Feng Xuning; Zheng Yuejiu; Li Yalun; Yang Min; Peng Yong; Han Xuebing; Wang Li; Chen Zonghai; Ren Yang; Lu Languang; He Xiangming; Chen Jitao; Amine Khalil; Ouyang Minggao;
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Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China|Tsinghua Univ Inst Nucl & New Energy Technol Beijing 100084 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China|Argonne Natl Lab Chem Sci & Engn Div Lemont IL 60439 USA;

Argonne Natl Lab Chem Sci & Engn Div Lemont IL 60439 USA;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Univ Shanghai Sci & Technol Coll Mech Engn Shanghai 200093 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ Inst Nucl & New Energy Technol Beijing 100084 Peoples R China;

Argonne Natl Lab Chem Sci & Engn Div Lemont IL 60439 USA;

Argonne Natl Lab Xray Sci Div Adv Photon Source Lemont IL 60439 USA;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

Tsinghua Univ Inst Nucl & New Energy Technol Beijing 100084 Peoples R China;

Peking Univ Coll Chem & Mol Engn Beijing Natl Lab Mol Sci Beijing 100871 Peoples R China;

Argonne Natl Lab Chem Sci & Engn Div Lemont IL 60439 USA|Stanford Univ Mat Sci & Engn Stanford CA 94305 USA|Imam Abdulrahman Bin Faisal Univ IAU Inst Res & Med Consultat IRMC Dammam Saudi Arabia;

Tsinghua Univ State Key Lab Automot Safety & Energy Beijing 100084 Peoples R China;

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正文语种 eng
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关键词
EC-free electrolytes; high safety; high voltage; practical lithium batteries;

机译：无菌电解质;高安全性;高压;实用锂电池;

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2. Unlock the potential of Li4Ti5O12 for high-voltage/long-cycling-life and high-safety batteries: Dual-ion architecture superior to lithium-ion storage [J] . Xiaoyuan Shi, Shansheng Yu, Ting Deng, 天然气化学（英文版） . 2020,第005期
3. Tuning the solution structure of electrolyte for optimal solid-electrolyte-interphase formation in high-voltage lithium metal batteries [J] . Juner Chen, Tingyu Liu, Lina Gao, 天然气化学（英文版） . 2021,第009期
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6. Progress and future prospects of high-voltage and high-safety electrolytes in advanced lithium batteries: from liquid to solid electrolytes [J] . Chen Shimou, Wen Kaihua, Fan Juntian, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2018,第25期

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9. Carbonate-Free, Sulfone-Based Electrolytes for High Voltage Lithium Batteries [C] . Marshall A. Schroeder Annual international battery seminar and exhibit . 2019

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10. Electrochemical studies of lithium-ion battery anode materials in lithium-ion battery electrolytes. [D] . Zhao, Mingchuan. 2001

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机译：溶胶 - 凝胶衍生锂离子导体Li1.5al0.5Ge1.5（pO4）3电解质，用于固态锂电池。

High-Voltage and High-Safety Practical Lithium Batteries with Ethylene Carbonate-Free Electrolyte

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