Article
Chemistry, Physical
Zoey Huey, Yeyoung Ha, Sarah Frisco, Andrew Norman, Glenn Teeter, Chun-Sheng Jiang, Steven C. DeCaluwe
Summary: In this study, the SEI on composite Si-Gr anodes was characterized using multi-modal characterization techniques to reveal the relationship between SEI chemical composition and structure with its functional properties. By combining multiple analysis methods, a comprehensive understanding of the SEI was obtained. The study found that the SEI has a bilayer structure and a direct correlation between elemental Li and F, suggesting that most Li in the SEI exists as lithium fluoride (LiF). Furthermore, there is an inverse relationship between lithium carbonate and LiF concentration in the SEI, providing insight into the detailed chemistry of SEI formation and evolution.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Daniel Krotkov, Dan Schneier, Svetlana Menkin, Yonatan Horowitz, Emanuel Peled, Diana Golodnitsky, Sharly Fleischer
Summary: Utilizing Terahertz (THz) time-domain-spectroscopy, the study presents the operando characterization of the silicon/electrolyte interfacial phenomena in a working lithium-ion battery, showing a strong correlation with XPS and electrochemical data.
BATTERIES & SUPERCAPS
(2022)
Article
Chemistry, Multidisciplinary
Daniel Martin-Yerga, David C. Milan, Xiangdong Xu, Julia Fernandez-Vidal, Laura Whalley, Alexander J. Cowan, Laurence J. Hardwick, Patrick R. Unwin
Summary: In this study, correlative scanning electrochemical cell microscopy (SECCM) and shell-isolated nanoparticles for enhanced Raman spectroscopy (SHINERS) were used to screen the formation of solid-electrolyte interphase (SEI) on Si electrodes. The results revealed the heterogeneous and dynamic nature of SEI, showing characteristic evolution as a function of cycle number. This correlative technique has the potential to accelerate the optimization of SEI formation methods in lithium-ion batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Physical
Runze Zhang, Yinglei Wu, Zhenying Chen, Yu Wang, Jinhui Zhu, Xiaodong Zhuang
Summary: All-solid-state Li batteries (ASSLBs) show promise due to their high safety and energy density. Understanding the failure mechanisms of ASSLBs can aid in improving their performance. In situ/operando Raman spectroscopy (IS/O-RS) is commonly used to study ASSLBs, as it can detect molecular structural and compositional changes in the electrodes, solid electrolytes, and their interfaces. This review discusses the applications of IS/O-RS in ASSLB research, including exploring electrode-electrolyte interfaces, electrodes, and solid electrolytes. The optimized use of IS/O-RS can provide valuable insights for improving ASSLB performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Jianxin Tian, Huijuan Guo, Jing Wan, Guixian Liu, Huijuan Yan, Rui Wen, Lijun Wan
Summary: Solid-state lithium batteries are considered important for the next generation of power batteries due to their safety and potential high energy density. However, challenges such as low ionic conductivity and instability between electrodes and electrolytes still exist. Understanding the dynamic evolution of electrodes, solid electrolytes, and their interfaces is crucial for improving battery performance.
ACTA CHIMICA SINICA
(2021)
Article
Chemistry, Multidisciplinary
Zhenxiao Li, Tingjie Hu, Juan Yang, Xia Yu, Fanyun Su, Qixian Bai, Yayun Ma, Yanchun Song, Ming Jia, Xiangyang Zhou, Jingjing Tang
Summary: By introducing carbon-fluorine functionalized groups with high content of LiF on the surface of Si nanoparticles, a multifunctional SEI film is constructed, which addresses the issues of volume changes and fragility of SEI in bare Si anodes. This results in improved coulombic efficiency and reduced capacity decay.
Article
Chemistry, Physical
Qinping Jian, Tianshuai Wang, Jing Sun, Maochun Wu, Tianshou Zhao
Summary: The study formulates a new low-concentration electrolyte to improve the reversibility and stability of zinc anodes in aqueous zinc batteries. By adding DMSO into the electrolyte, a fluorinated interphase is formed on the zinc surface, suppressing dendrite formation and side reactions. This newly formulated electrolyte enables highly reversible zinc plating/stripping and significantly improves the cycle life of zinc batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Nicholas J. Williams, Edouard Querel, Ieuan D. Seymour, Stephen J. Skinner, Ainara Aguadero
Summary: Understanding and controlling the degradation at interfaces in batteries is crucial for improving their electrochemical performance and cycling life. This study focuses on the growth kinetics of the interphase formed between solid electrolytes and metallic negative electrodes in solid-state batteries. By adapting the theory of coupled ion-electron transfer, the rate of interphase formation and metal plating during charge can be accurately described. The model is validated using experimental data collected operando. This study highlights the valuable information that can be obtained from a single operando experiment and its relevance to other solid-state electrolyte systems.
CHEMISTRY OF MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hui Wang, Mouren Miao, Hui Li, Yuliang Cao, Hanxi Yang, Xinping Ai
Summary: By forming an artificial solid electrolyte interphase (ASEI) on the surface of ferrosilicon/carbon (FeSi/C) anode through a designed nucleophilic reaction of polysulfides with vinylene carbonate (VC) and fluoroethylene carbonate (FEC) molecules, it effectively prevents electrolyte infiltration and decomposition while enabling Li+ transport, thus stabilizing the FeSi/C anode interface. The ASEI-modified FeSi/C anode exhibits a large reversible capacity, excellent cycling stability, and greatly elevated cycling coulombic efficiency, potentially serving as a high-capacity anode of LIBs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Leicheng Zhang, Chen Zhao, Qinping Jian, Maochun Wu, Tianshou Zhao
Summary: The lithiated silicon-sulfur full battery developed in this work addresses the unstable solid-electrolyte interphase (SEI) on the silicon anode and the side reactions with highly soluble polysulfides by utilizing pomegranate-structured hosts for both the anode and cathode. This battery achieves high reversible capacity, superior rate capability, and long cycle life.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Kyungmi Lim, Bernhard Fenk, Jelena Popovic, Joachim Maier
Summary: In this study, the growth mechanism and ionic transport properties of SEIs on Li/Na electrodes were systematically investigated, revealing the liquid/solid composite nature and porosity of SEIs, with SEIs on Na electrodes shown to be more porous than those on Li electrodes. Time-dependent activation energy of SEIs was evaluated using EIS, emphasizing the nonpassivating nature of SEIs on alkali metal batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Liang Zhao, Danfeng Zhang, Yongfeng Huang, Kui Lin, Likun Chen, Wei Lv, Yan-Bing He, Feiyu Kang
Summary: Constructing a reinforced and gradient SEI on silicon nanoparticles through an in-situ thiol-ene click reaction is an effective method to improve cycling performance and stability. The modified SEI can homogenize stress and strain during lithiation to reduce expansion and prevent cracking, leading to excellent performance and cycling stability in high-energy-density lithium-ion batteries.
Article
Chemistry, Multidisciplinary
Gerald Gourdin, Vicky Doan-Nguyen
Summary: Correlating material characterization information with battery performance is crucial for the development of advanced batteries. In situ/operando characterization and specially designed cells are effective in achieving this goal, but additional analytical techniques are needed to gain a comprehensive understanding. There is an opportunity to enhance the usefulness of these devices by incorporating near-simultaneous, multimodal capabilities to advance the development of electrochemical energy storage materials.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Chemistry, Physical
Rui Zhao, Shuwei Wang, Dongqing Liu, Yuanming Liu, Xiaohui Lv, Xiaojie Zeng, Baohua Li
Summary: Silicon oxide-based materials show promise as anode materials for lithium-ion batteries, with the solid electrolyte interphase playing a crucial role in the performance. A study on the effect of fluoroethylene carbonate (FEC) on the interface film formation of commercial SiO/C anode revealed a dense and stiff SEI layer in FEC-based electrolyte, in contrast to the scattered and thin SEI layer in ethylene carbonate-based electrolyte.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Marm B. Dixit, Jun-Sang Park, Peter Kenesei, Jonathan Almer, Kelsey B. Hatzell
Summary: This paper highlights the importance of solid-state batteries in achieving electrification of the transportation sector, while also discussing challenges such as electro-chemo-mechanical degradation affecting performance metrics. Characterizing and understanding the solid|solid interfaces in solid-state batteries is crucial for designing high energy density, durable solid-state batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)