Significance of electrolyte additive molecule structure in stabilizing interphase in LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch cells at high temperature

Zhao，Huajun1,2,3; Hu，Shiguang4; Fan，Yanchen5; Wang，Qingrong2; Li，Jianding6; Yuan，Mingman2; Ma，Xinzhi7; Wang，Jun2; Shao，Huaiyu3; Deng，Yonghong2

2024-02-01

10.1016/j.ensm.2023.103151

Energy Storage Materials   影响因子和分区

2405-8297

Electrolyte additives are pivotal for stable cycling of rechargeable lithium ion batteries (LIBs), which dictate the creation of the protective interphases on electrodes. Many additives have been proposed but less knowledge is available on the relationship between their molecular structure and interphase stability. This research compares three electrolyte additives with systematic changes in their cyclic ethylene sulfate structures, i.e. 1,3,2−dioxathiolane−2,2−dioxide (DTD), 4−methyl−1,3,2−dioxathiolane−2,2− dioxide (MDTD) and 4−propyl−[1,3,2] dioxathiolane−2,2−dioxide (PDTD) to investigate their effects on the performance of LiNiCoMnO/artificial graphite lithium ion pouch cells at high temperature. Comprehensive characterizations reveal that all these additives exhibit similar oxidative and reductive activity, but they lead to diverse long−term cycling performance at 55 °C. The sulfate species derived from the propyl functionalized PDTD form the most effective cathode and anode interphases in preventing electrolyte decomposition and improving cycling capabilities, with capacity retention of 85 % after 900 cycles at 55 °C. Meanwhile, a super stable (3000 cycles), high−capacity (1668 mAh) pouch cell is constructed at 25 °C. This work paves a road to design electrolyte additive more efficiently for high−energy−density LIBs at elevated temperature.

Cyclic ethylene sulfate Electrolyte additive Lithium ion battery Molecular structure Solid electrolyte interphase

EI

英语

通讯

2-s2.0-85181682284

Scopus

1.School of Materials Science and Engineering,Yancheng Institute of Technology,Yancheng,224051,China
2.Department of Materials Science and Engineering,School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China
3.Guangdong-Hong Kong-Macau Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade,SAR,999078,Macao
4.Shenzhen CAPCHEM Technology Co. Ltd.,Shenzhen,518118,China
5.PetroChina Shenzhen New Energy Research Institute,Shenzhen,518054,China
6.Huzhou Key Laboratory of Materials for Energy Conversion and Storage,School of Science,Huzhou University,Huzhou,313000,China
7.Laboratory for Photonic and Electronic Bandgap Materials,Ministry of Education,School of Physics and Electronic Engineering,Harbin Normal University,150500,China

Zhao，Huajun,Hu，Shiguang,Fan，Yanchen,et al. Significance of electrolyte additive molecule structure in stabilizing interphase in LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch cells at high temperature[J]. Energy Storage Materials,2024,65.

Zhao，Huajun.,Hu，Shiguang.,Fan，Yanchen.,Wang，Qingrong.,Li，Jianding.,...&Deng，Yonghong.(2024).Significance of electrolyte additive molecule structure in stabilizing interphase in LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch cells at high temperature.Energy Storage Materials,65.

Zhao，Huajun,et al."Significance of electrolyte additive molecule structure in stabilizing interphase in LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch cells at high temperature".Energy Storage Materials 65(2024).