Review
Chemistry, Physical
Jianing Li, Jianzhong Yang, Zhaoqi Ji, Min Su, Huijing Li, Yanchao Wu, Xin Su, Zhengcheng Zhang
Summary: The article introduces the application of LiBOB in lithium ion batteries, which can form a dense boron-containing polymer as a solid electrolyte interlayer to isolate the electrode material from the electrolyte and avoid side reactions. LiBOB can also act as an HF scavenger to maintain the structural integrity of electrodes and react with LiPF6 to generate LiDFOB as a clean-up agent for reactive oxygen radicals. The article summarizes the application and working mechanisms of LiBOB in high capacity and high voltage cathode materials, as well as the current challenges and strategies to overcome them. It provides useful insights for stable operation of high capacity LIBs under high voltage.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Qiao Wang, Chuang Yu, Liping Li, Xiaoqing Liu, Xin Zhang, Guichen Gao, Yaowen Wang, Guangshe Li
Summary: Solid-state sodium batteries (SSSBs) show great potential in energy storage for their safety, cost, and sustainability. Achieving high ionic conductivity and temperature adaptability for sodium-ion solid electrolytes is a major challenge. In this study, Sc3+-doped Na3Zr2Si2PO12 (NASICON) is demonstrated as a promising electrolyte for SSSBs over a wide temperature range. Through various tests and characterizations, the excellent performance of all-solid-state sodium batteries with NASICON electrolytes is revealed.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Agnieszka Swiderska-Mocek, Aleksandra Kubis
Summary: A study on polymer electrolytes for Li-ion polymer batteries was conducted, utilizing a combination of lithium salts, ionic liquids, sulfolane, and PVdF. The performance of the polymer electrolytes was evaluated through various tests, including electrochemical impedance spectroscopy, surface morphology analysis, and flammability testing.
SOLID STATE IONICS
(2021)
Article
Electrochemistry
Bingying Zhu, Xiaotang Shi, Tianle Zheng, Jianwei Xiong, Ya-Jun Cheng, Yonggao Xia
Summary: This paper presents an effective strategy for constructing a wide-temperature range electrode-electrolyte interface layer for lithium secondary batteries. By using electrolyte formulation and the synergy of propylene carbonate and glutaronitrile, stable electrochemical performance in the range of -40℃ to 140℃ is achieved.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Xiaofei Hu, Yiwen Zhang, Peiyu Wang, Edward Matios, Weiyang Li
Summary: By utilizing a three-salt electrolyte system, this study demonstrates the achievement of stable alkali metal anodes in various gas atmospheres. The technology shows high reversible capacity and long cycle life, and it is applicable to a wide range of operating temperatures.
Article
Chemistry, Multidisciplinary
D. Zhao, H. Lu, S. Li, P. Wang, X. Fan
Summary: The optimization of electrolyte formulation and the resulting change in the properties of the solid electrolyte interfacial film (SEI) are crucial for improving the cycle stability of sodium ion batteries at high temperatures. This study successfully constructed a stable SEI film on hard carbon anodes by introducing a synthetic sodium-difluoro(oxalate)borate (NaODFB)-based electrolyte, which resulted in enhanced cycling stability and reversible capacity.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Electrochemistry
Bin Li, Youxiang Shao, Jiangji He, Ruicheng Chen, Sixie Huang, Zhiliang Wu, Jianhui Li, Zaisheng Wang, Guocong Liu
Summary: This study investigates the use of lithium difluoro(oxalate)borate (LiDFOB) as an electrolyte additive to overcome capacity fading in LiCoO2/graphite lithium-ion batteries at high voltages. The addition of 1 wt.% LiDFOB improves the battery's capacity retention after 300 cycles at a voltage range of 3.0-4.5 V from 42.1% to 80.2%. By coordinating with Co ions, LiDFOB inhibits cobalt dissolution from LiCoO2 and prevents cobalt deposition on the anode. Additionally, LiDFOB forms stable, uniform, and thin surface films on both positive and negative electrodes, inhibiting electrolyte decomposition and enhancing battery performance.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Physical
Chenyang Chen, Yongzhi Zhao, Yuanyuan Li, Jinping Liu
Summary: Aqueous electrochemical energy storage devices have many advantages, but the low thermodynamic decomposition voltage of water limits their performance and operating temperature range. At low temperatures, the electrolyte freezes easily, resulting in low capacity and poor rate performance. At high temperatures, the water activity increases and side reactions intensify, leading to safety issues. This review summarizes the research progress and proposes potential concepts to design high-voltage aqueous electrolytes with a wide operating temperature range for high-performance aqueous alkali metal-ion batteries.
ACTA PHYSICO-CHIMICA SINICA
(2023)
Article
Electrochemistry
Charles Aram Hall, Lars O. Simon Colbin, Alexander Buckel, Reza Younesi
Summary: In this study, the addition of N,N-dimethyl formamide (DMF), N,N-dimethyl acetamide (DMAc), and N-methyl pyrrolidone (NMP) cosolvents significantly increased the ionic conductivity of Na-ion battery electrolytes to around 7 mS/cm without compromising their flame-retarding properties.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Physical
Xuyang Liu, Xueying Zheng, Xiao Qin, Ya Deng, Yiming Dai, Tong Zhao, Zhongqiang Wang, Hao Yang, Wei Luo
Summary: In this study, a carbonate-based wide temperature (WT) electrolyte is proposed by combining fluorinated carbonates and fluorobenzene, showing good performance in both low and high temperatures. By adjusting the affinity between solvents and Na+ ions as well as the salt/carbonate ratio, the stability and diffusion properties of the electrolyte are optimized at different temperatures. Additionally, the temperature-responsive solid-electrolyte-interphase induced by the WT electrolyte guarantees the performance of the battery under different temperature conditions.
Review
Chemistry, Multidisciplinary
Yu Sun, Jing-Chang Li, Haoshen Zhou, Shaohua Guo
Summary: This review comprehensively summarizes the operation fundamentals of SMBs in different environments and proposes various targeted optimization strategies.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Applied
Sisi Wang, Zhichen Xue, Fulu Chu, Zengqiang Guan, Jie Lei, Feixiang Wu
Summary: In this study, a new electrolyte recipe comprising a moderately concentrated electrolyte with 2.4 M lithium bis(fluorosulfonyl)imide (LiFSI) in a cosolvent mixture of fluorinated ethylene carbonate (FEC) and dimethyl carbonate (DMC) was developed for lithium metal batteries. The electrolyte enabled the formation of an inorganic-rich interphase on the lithium metal anode, improving stability and ion transfer kinetics. The electrolyte exhibited low overpotential for lithium plating/stripping and high cycling efficiency, and showed excellent long-term cycling performance and high rate capability in Li||LiFePO4 cells.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Polymer Science
Luca Porcarelli, Jorge L. Olmedo-Martinez, Preston Sutton, Vera Bocharova, Asier Fdz De Anastro, Montserrat Galceran, Alexei P. Sokolov, Patrick C. Howlett, Maria Forsyth, David Mecerreyes
Summary: Sodium metal batteries are a promising emerging technology that requires solid electrolytes to address safety issues. This study demonstrates a simple method to prepare a mechanically robust and efficient soft solid electrolyte, which exhibits high ionic conductivity and tunable storage modulus.
Article
Chemistry, Physical
Ke Li, Wei Shen, Tao Xu, Lu Yang, Xiaobing Xu, Feiyao Yang, Lijuan Zhang, Yangjian Wang, Yaning Zhou, Mengjuan Zhong, Di Wei
Summary: This study presents an integrated design of electrodes/fibrous GPEs modified with graphene oxide (GO) to enhance the safety and performance of lithium-ion batteries.
Article
Chemistry, Physical
Pengju Li, Zhipeng Jiang, Xiaobo Huang, Xing Lu, Jia Xie, Shijie Cheng
Summary: The nitrofullerene additive demonstrates high compatibility with various electrolytes, promoting stable protective layer formation on sodium metal anodes and inhibiting dendrite growth. This leads to improved cycling stability, low voltage hysteresis, high rate capability, and prolonged cycle life in both carbonate and ether electrolytes.
Review
Chemistry, Physical
Jonas Neumann, Martina Petranikova, Marcel Meeus, Jorge D. Gamarra, Reza Younesi, Martin Winter, Sascha Nowak
Summary: This paper provides an overview of the current state and future trends in the recycling technology of lithium-ion batteries. The widespread use of lithium-ion batteries in various applications necessitates the development of efficient recycling methods. However, the complexity of these batteries and their varying compositions pose challenges in establishing a robust recycling procedure. The paper discusses current practices and regulations, as well as predictions and approaches for future battery recycling.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Eun Jeong Kim, Philip A. Maughan, Euan N. Bassey, Raphaele J. Clement, Le Anh Ma, Laurent C. Duda, Divya Sehrawat, Reza Younesi, Neeraj Sharma, Clare P. Grey, A. Robert Armstrong
Summary: Activation of oxygen redox is a promising strategy to enhance energy density of positive electrode materials in lithium and sodium-ion batteries. A ribbon superlattice is identified for the first time in P3-type Na0.67Li0.2Mn0.8O2, maintaining structural stability during cycling. Varying cation ordering between Li and Mn layers can enhance anionic redox and improve energy density in rechargeable batteries.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Anna Szczesna-Chrzan, Tomasz Trzeciak, Magdalena Zybert, Hubert Ronduda, Andrzej Ostrowski, Maciej Trzaskowski, Marcin Drozd, Maciej Smolinski, Grazyna Zofia Zukowska, Wioletta Rarog-Pilecka, Wladyslaw Wieczorek, Alexander Buckel, Reza Younesi, Marek Marcinek
Summary: This article presents a research on new salts and cathode materials for sodium cells. The electrochemical studies of different electrolytes and their performance with layered oxides are investigated. The results show that electrolytes with suitable additives exhibit improved properties when paired with layered cathode materials.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Burak Aktekin, Guiomar Hernandez, Reza Younesi, Daniel Brandell, Kristina Edstrom
Summary: The highly concentrated electrolyte system LiFSI:EC shows excellent electrochemical performance and stability in various cell configurations, including high-capacity and high-voltage electrodes. It exhibits superior conductivity and passivation ability, leading to improved performance in Li-metal-Si/graphite cells and NMC111-Si/graphite cells. However, it shows less compatibility with the high-voltage spinel LNMO electrode.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Habtom D. Asfaw, Ritambhara Gond, Antonia Kotronia, Cheuk-Wai Tai, Reza Younesi
Summary: This study investigates the synthesis of hard carbon nanosheets from oxidized cork and the impact of synthesis temperature on the characteristics of hard carbon. It is found that higher carbonization temperature leads to lower specific surface areas and interlayer spacing, as well as higher initial coulombic efficiency. The rate performance of hard carbon can be improved by increasing the cycling temperature, but it slightly decreases the initial coulombic efficiency. The applicability of hard carbon nanosheets in full-cells is also evaluated in this study.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Energy & Fuels
Charifa Hakim, Le Anh Ma, Laurent C. Duda, Reza Younesi, Daniel Brandell, Kristina Edstrom, Ismael Saadoune
Summary: Manganese-based layered oxides, especially Na2Mn3O7, have shown promise as cathode materials for sodium-ion batteries due to their cost-effectiveness and non-toxicity. However, the charge compensation mechanisms during battery operation are still unclear.
Article
Chemistry, Physical
Wessel W. A. van Ekeren, Marcelo Albuquerque, Gustav Ek, Ronnie Mogensen, William R. Brant, Luciano T. Costa, Daniel Brandell, Reza Younesi
Summary: To enhance battery safety, the development of non-flammable electrolytes is crucial. A new concept in this field is the use of localized highly concentrated electrolytes (LHCEs), which have lower viscosity, improved conductivity, and reduced costs compared to highly concentrated electrolytes (HCEs) due to the addition of diluent solvents. This study investigates the solvation structures of LHCEs using Raman spectroscopy and NMR spectroscopy, and molecular dynamics simulations reveal the formation of a highly concentrated Li+-TEP solvation sheath that can be protected by the diluents TTE and BTFE. The electrochemical performances of the LHCEs are evaluated in various cell configurations, with the TTE-based electrolyte performing better in full-cells and Li-metal cells compared to the BTFE-based electrolyte.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Abdolkhaled Mohammadi, Sabrine Djafer, Syreina Sayegh, Andrew J. Naylor, Mikhael Bechelany, Reza Younesi, Laure Monconduit, Lorenzo Stievano
Summary: Although lithium metal and anode-free rechargeable batteries (LMBs and AFBs) have great potential as energy storage systems, the formation of high-surface lithium deposits during plating-stripping cycles hinders their practical applications. Efforts have been made to prevent this issue, such as electrolyte modification and electrode surface modification. However, the evaluation of battery performance using Coulombic efficiency (CE) is challenging due to various parameters. This study aims to reveal the interplay of several overlooked parameters and provide insights into the evaluation methods for LMBs and AFBs.
CHEMISTRY OF MATERIALS
(2023)
Article
Electrochemistry
Florent Mohimont, Ronan Le Ruyet, Reza Younesi, Andrew J. J. Naylor
Summary: Alloy electrodes with high energy density are gaining interest in the field of Li-ion batteries, but they suffer from rapid pulverization and disconnection due to large volume changes. Ga-based liquid alloys, such as galinstan, have been studied as self-healing electrodes due to their ability to store Li and remain in a liquid state at room temperature. However, the lithiation mechanism and practical capacity of galinstan are still unknown. This study used electrochemical measurements, XRD, and SEM analyses to investigate the redox processes and structural properties of galinstan as an electrode material.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Girish D. D. Salian, Alma Mathew, Ritambhara Gond, Wessel van Ekeren, Jonathan Hojberg, Christian Fink Elkjaer, Matthew J. J. Lacey, Satu Kristiina Heiskanen, Daniel Brandell, Reza Younesi
Summary: This study investigates a 1 M lithium bis(fluorosulfonyl) imide (LiFSI) electrolyte in sulfolane (SL) without ethylene carbonate for LiNi0.5Mn1.5O4-graphite full-cells. The focus is on evaluating the anodic stability of the SL electrolyte and the passivation layers formed on LiNi0.5Mn1.5O4 (LNMO) and graphite, along with resistance measurements using intermittent current interruption (ICI) technique during cycling. The results show that the sulfolane electrolyte degrades more at higher potentials, contradicting previous reports of higher oxidative stability. However, the formed passivation layers due to electrolyte degradation prevent further degradation. The study provides new insights into the oxidative/anodic stability of sulfolane-based electrolyte.
BATTERIES & SUPERCAPS
(2023)
Article
Electrochemistry
Ali Jamal, Girish D. Salian, Alma Mathew, Wandi Wahyudi, Rodrigo P. Carvalho, Ritambhara Gond, Satu Kristiina Heiskanen, Daniel Brandell, Reza Younesi
Summary: This study presents the use of TMSPi and LiDFOB as film-forming additives in a conventional LiPF6-containing carbonate-based electrolyte solution to suppress the degradation of high-voltage lithium-ion battery electrolytes. TMSPi oxidizes on the LNMO cathode surface to form a stable cathode electrolyte interphase (CEI) layer, while LiDFOB has the potential to form a solid electrolyte interphase (SEI) on the graphite anode surface. The combination of these two additives effectively inhibits electrolyte degradation and improves capacity retention of high-voltage LIBs.
Article
Chemistry, Multidisciplinary
Yonas Tesfamhret, Haidong Liu, Erik J. Berg, Reza Younesi
Summary: Transition metal (TM) dissolution is influenced by cathode-electrolyte interaction and affects both the loss of redox-active material from the cathode and the stability of the solid electrolyte interphase (SEI) at the counter electrode. The limited anodic stability of typical carbonate-based electrolytes, specifically ethylene carbonate (EC), poses challenges for high-voltage cathode performance. Tetramethylene sulfone (SL) has been used as a co-solvent to investigate the TM dissolution behavior of LiN0.8C0.17Al0.03 (NCA) and LiMn2O4 (LMO) as a more anodically stable substitute for EC. Electrolytes containing SL show reduced TM dissolution compared to EC, but they have lower cycling stability due to their reduced ability to support Li-ion transport.
Article
Chemistry, Multidisciplinary
Le Anh Ma, Alexander Buckel, Andreas Hofmann, Leif Nyholm, Reza Younesi
Summary: Knowledge about capacity losses related to the solid electrolyte interphase (SEI) in sodium-ion batteries (SIBs) is still limited. This study investigates capacity losses caused by changes in the SEI layer under different electrolyte conditions, and finds that the amount of capacity lost depends on the interplay between the electrolyte chemistry and the thickness and stability of the SEI layer.
Article
Chemistry, Physical
Felix Massel, Burak Aktekin, Yi-Sheng Liu, Jinghua Guo, Magnus Helgerud Sorby, Daniel Brandell, Reza Younesi, Maria Hahlin, Laurent-Claudius Duda
Summary: This study investigated the first lithiation cycle of the positive electrode material LNMO using XAS and RIXS techniques. The results revealed that charge compensation in LNMO primarily occurs within the Ni-O bonds. RIXS analysis provided insights into the distribution of holes between Ni and O ions during delithiation. Additionally, the study highlighted the presence of non-trivial anionic activity.
Article
Chemistry, Physical
Lars Olow Simon Colbin, Charles Aram Hall, Ahmed S. Etman, Alexander Buckel, Leif Nyholm, Reza Younesi
Summary: This article investigates the impact of different electrolyte solutions on the anodic dissolution or passivation of aluminum in sodium-ion batteries. It is found that the type of electrolyte is critical for the presence of anodic dissolution, while the solvent alters the dissolution process.
