Article
Chemistry, Multidisciplinary
Hao Jia, Ju-Myung Kim, Peiyuan Gao, Yaobin Xu, Mark H. Engelhard, Bethany E. Matthews, Chongmin Wang, Wu Xu
Summary: This study systematically investigates and compares localized high-concentration electrolytes (LHCEs) based on five different solvents in lithium-ion batteries (LIBs). The unique solvation structure of LHCEs facilitates the formation of solid electrolyte interphase (SEI) on graphite anode, enabling previously incompatible solvents to achieve reversible lithiation/delithiation. The study also reveals that the long-term cyclability of LIBs can be improved by introducing additives into LHCEs, which results in effective SEIs and cathode electrolyte interphases (CEIs).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Electrochemistry
Debabrata Mohanty, Shu-Yu Chen, I-Ming Hung
Summary: This study investigates the potential of using a solid electrolyte as a replacement for flammable liquid electrolytes in lithium batteries. The composite solid electrolyte, composed of LiTFSI salt, PVDF-HFP polymer, and LATP ceramic powder, shows increased lithium-ion transfer and conductivity with higher LiTFSI salt concentration. However, the mechanical strength decreases when the percentage of LiTFSI exceeds 60%. The hybrid electrolyte with 60% LiTFSI content exhibits high ionic conductivity, wide electrochemical stability window, and good electrochemical stability.
Article
Nanoscience & Nanotechnology
Yanjun Xu, Shengzhao Zhang, Taibo Liang, Zhujun Yao, Xiuli Wang, Changdong Gu, Xinhui Xia, Jiangping Tu
Summary: Researchers have designed a solid-state electrolyte with flexibility and robustness to ensure stable lithium cycling and enhanced ionic conductivity. The electrolyte exhibits outstanding cycling performance in solid-state LiFePO4//Li batteries, with a Young's modulus of up to 1030 MPa, and can work well in harsh environments.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Matthew Green, Hovnan Simonyan, Katty Kaydanik, Joseph A. Teprovich
Summary: This study evaluated the potential advantages of using a closo-borate salt as an electrolyte for lithium-ion batteries. Three different solvent systems were compared, and it was found that carbonate-based liquid electrolytes performed better than ionic liquid electrolytes in terms of performance and cycle stability.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Nayoung Kang, Hyeon-Woo Yang, Woo Seung Kang, Sun-Jae Kim
Summary: This article analyzed the impact of electrochemical processing parameters on the formation of uniform and dense monolithic solid electrolyte interface (SEI) at Ti-SiOx@C anode, and explored its improvement on initial Coulombic efficiency and cyclic stability. The research found that the microstructure and morphology of SEI were strongly influenced by the current density and duration applied during initial charging of the electrode. By applying a certain charge amount at high current density, a monolithic SEI could be formed, leading to significantly improved initial Coulombic efficiency and cyclic stability of the battery.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xinghua Liang, Yujuan Ning, Linxiao Lan, Guanhua Yang, Minghua Li, Shufang Tang, Jianling Huang
Summary: In this study, a PVDF-HFP-LiClO4-LLZTO composite solid electrolyte was prepared using the solution pouring method, which showed excellent electrochemical performance in the temperature range of 30 to 60 degrees C. This work provides an effective strategy for the design and preparation of solid-state lithium-ion batteries.
Article
Chemistry, Physical
Tanvir R. Tanim, Sangwook Kim, Andrew M. Colclasure, Zhenzhen Yang, Kevin Gering, Peter J. Weddle, Michael Evans, Eric J. Dufek, Yulin Lin, Jianguo Wen, Francois Usseglio-Viretta, Alison R. Dunlop, Stephen E. Trask, Kandler Smith, Brian J. Ingram, Andrew N. Jansen
Summary: Achieving 10-minute extreme fast charging while maintaining good charge acceptance and cycle life is a challenging task in the design of lithium ion batteries. This study proposes combining multiple solutions, including materials-to-electrode design-to-charging protocols, to overcome limitations in lithium-ion transport and enable 10-minute extreme fast charging in batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Xueqing Min, Changxing Han, Shenghang Zhang, Jun Ma, Naifang Hu, Jiedong Li, Xiaofan Du, Bin Xie, Hong-Ji Lin, Chang-Yang Kuo, Chien-Te Chen, Zhiwei Hu, Lixin Qiao, Zili Cui, Gaojie Xu, Guanglei Cui
Summary: A novel cyano-functionalized lithium borate salt, LiDFTCB, is synthesized to alleviate the decomposition and gas generation issue of LiDFOB in lithium-ion batteries. The LiDFTCB-based electrolyte shows superior capacity retention and safety performance, attributing to the formation of thin and robust interfacial layers at both electrodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Shichang Ma, Bingxiang Sun, Xiaojia Su, Weige Zhang, Haijun Ruan
Summary: The design of optimized charging strategies based on electrochemical models is crucial for the broader use of electric vehicles. Lithium plating on the anode surface, which is closely related to charging lifetime and battery safety, should not be ignored in charging strategy design. By using electrochemical models in combination with the lithium plating criterion, the maximum charging current that prevents lithium plating can be identified, facilitating accurate determination of model parameters. However, most current studies have not considered the influence of electrochemical parameters on characterizing variables for the lithium plating criterion. To improve the accuracy of the electrochemical model for the lithium plating reaction, a sensitivity analysis of different parameters was carried out, and the effect of temperature was also investigated.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Andreas Strasser, Alexander Adam, Jiahao Li
Summary: Reducing the charging time is important for increasing the acceptance of electric vehicles. This paper introduces a new method that allows the detection of the onset of lithium plating in automotive lithium-ion batteries using online electrochemical impedance spectroscopy. The detection is based on observing the real part of the impedance across the state of charge during the charging procedure.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Florian Gebert, Matilde Longhini, Fosca Conti, Andrew J. Naylor
Summary: The rapid adoption of lithium-ion batteries, especially in transportation, has raised concerns about their safety, particularly regarding the flammable liquid electrolyte. This study identified and tested eight promising non-flammable liquid electrolytes, finding that the phosphorus-free fluorinated solvents outperformed the phosphate and phosphonate-based solvents in terms of performance and capacity retention.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Maximilian Becker, Wengao Zhao, Francesco Pagani, Claudia Schreiner, Renato Figi, Walid Dachraoui, Rabeb Grissa, Ruben-Simon Kuehnel, Corsin Battaglia
Summary: The compatibility of LiNi0.8Mn0.1Co0.1O2 (NMC811) with non-flammable water-in-salt electrolytes is investigated. It is found that the enhanced salt concentration effectively diminishes degradation phenomena and that self-discharge reactions lead to irreversible capacity losses.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Parameswara R. Chinnam, Tanvir R. Tanim, Eric J. Dufek, Charles C. Dickerson, Meng Li
Summary: Lithium plating is a key challenge for extreme fast charging in graphite-based lithium-ion batteries, and there is currently a lack of comprehensive understanding of key plating-related electrochemical signatures. The diagnostics for lithium plating during fast charging face sensitivity and reliability issues.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
Lei Zou, Kun Shi, Honglei Liu, Yong Wu, Tao Xu, Qiang Wang, Zhangxian Chen, Zeheng Yang, Ru Song, Jianhui Su, Weixin Zhang
Summary: A flexible and robust polymer-in-salt electrolyte based on a composite of polybenzimidazole (PBI) and polyethylene oxide (PEO) has been developed for room-temperature lithium metal batteries. The PBI's rigid structure and dense hydrogen bonds with PEO enhance the structural stability of the electrolyte and suppress lithium dendrite growth. The thermal stability and fire resistance of the electrolyte have also been improved. The PEO-based polymer-in-salt electrolyte demonstrates high room temperature ionic conductivity, wide electrochemical window, and large lithium transference number, leading to improved cycling performance and rate capability in lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Jangho Park, Sanghyuk Park, Mincheol Beak, Seongdeock Jeong, Kyungjung Kwon
Summary: This study investigates the effects of electrolyte components on the performance of LiNi0.8Mn0.1Co0.1O2 cathode material. The presence of PF6- anions in cathode material benefits the cyclability and rate performance of lithium-ion batteries. On the other hand, organic solvents negatively affect the morphology and initial discharge capacity.
JOURNAL OF CLEANER PRODUCTION
(2022)