文献类型：期刊文献

英文题名：A dilute nitrate electrolyte for all-climate batteries

作者：You, Haipeng[1]; Chen, Jiahui[2,5]; Li, Ruhong[6]; Chen, Long[2,3,4]; Wang, Ke[2,5]; Qiu, Yuxin[2,5]; Jiang, Jiaqing[2,3,4]; Lin, Yiting[2,3]; Yao, Menglei[3,4,7]; Yang, Hongming[8]; Li, Yuhang[1,3,4]; Song, Zhen[2,5]; Fan, Xiulin[6]; Li, Chunzhong[2,3,4]

机构：[1] Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; [2] School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200030, China; [3] Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200030, China; [4] Shanghai Engineering Research Center of Hierarchical Nanomaterials, East China University of Science and Technology, Shanghai, 200030, China; [5] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200030, China; [6] State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China; [7] School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200030, China; [8] International Elite Engineering School, East China University of Science and Technology, Shanghai, 200030, China

年份：2026

外文期刊名：Joule

收录：EI(收录号：20262821091166);Scopus(收录号：2-s2.0-105044333854)

语种：英文

外文关键词：Chlorine compounds - Costs - Economic analysis - Electrodes - Fluorine compounds - Graphite - Learning systems - Lithium - Lithium compounds - Nickel compounds - Nitrogen compounds - Phosphorus compounds - Solid electrolytes

摘要：Commercial lithium-ion battery electrolytes rely heavily on expensive LiPF6, making electrolyte cost a growing concern for battery deployment. Here, machine learning was used to help select dimethylacetamide as the basic solvent for LiNO3 to yield a low-concentration electrolyte (0.38 M). Remarkably, techno-economic analysis shows that this approach directly reduces the cost of the electrolyte by up to 37.1%. The electrolyte delivered a 4.65-V electrochemical window, an ionic conductivity of 3.34 × 10?3 S cm?1, and stable operation from ?40°C to 50°C. Its Li3N/LiF-rich and inorganic-organic hybrid interphases enabled stable cycling of NMC811, graphite, and lithium-metal electrodes. A 1-Ah NMC811||graphite pouch cell retained 91.3% capacity after 500 cycles. As validated here, dilute electrolytes are expected to present an innovative solution for low-cost batteries. ? 2026 Elsevier Inc.