Article
Chemistry, Multidisciplinary
Hui Wan, Zhixiao Liu, Guangdong Liu, Shuaiyu Yi, Pengfei Yan, Huiqiu Deng, Wangyu Hu, Fei Gao
Summary: Electrochemical cycling induces transition-metal ion migration and oxygen vacancy formation in layered transition-metal oxides, causing performance decay. This study used ab initio calculations and atomic level imaging to explore the migration mechanisms in LiNi1/3Mn1/3Co1/3O2, revealing favorable pathways for transition-metal migration and the critical role of nickel in stabilizing layered cathodes. Insights from this study may lead to tailored layered cathodes with high structural stability and superior performance.
Article
Chemistry, Multidisciplinary
Fan Zhao, Feng Han, Shi-wei Zhang, Zhi-jun Zhang
Summary: Increasing drying temperature improves the drying performance and reduces energy consumption of LiNi1/3Co1/3Mn1/3O2 powder, while reducing powder thickness enhances drying rate with little effect on energy saving.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Analytical
Yusuke Abe, Kensuke Sawa, Masahiro Tomioka, Ryoei Watanabe, Tatsuya Yodose, Seiji Kumagai
Summary: We present a methodology for extracting cathode active materials from waste lithium-ion batteries (LIBs) in a time-effective, automatic, and safe manner. The recovered materials can be used for the fabrication of new LIBs. The feasibility of the method was tested for the recovery of ternary Li transition metal oxide (LTMO) cathode materials from waste automotive LIBs. The recovered materials showed promising electrochemical performance, with high capacity retention after multiple charge-discharge cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Yunyun Zhang, Jian Li, Weiguo Huang, Zhexi Chi, Jinyu Bo, Lihua Wang, Zhiyong Wang
Summary: In the recycling process of spent lithium-ion batteries, the presence of Al impurities affects the physical and electrochemical properties of the recovered cathode active materials. This study investigates the effects of different forms (Al and Al3 +) and concentrations of Al impurities on the recovery of LiNi1/3Co1/3Mn1/3O2 cathode material. The results show that Al3 + impurities promote particle nucleation and growth, improving electrochemical performance, while existing Al impurities lead to additional side reactions and negatively impact electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Muharrem Kunduraci, Selda Kilic Cetin, Ugur Caglayan, Rasiha Nefise Mutlu, Dogan Kaya, Ahmet Ekicibil
Summary: The electrochemical performance of an aqueous lithium-ion battery with LiV3O8 anode, 'water-in-salt' 20 M LiTFSI electrolyte, and LiNi1/3Co1/3Mn1/3O2 cathode was investigated. The battery exhibited high lithiation capacity, extended cycle life, and stable discharge potential.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Yu -Long Xie, Li -Fang Guo
Summary: In this study, LiNi1/3Co1/3Mn1/3O2/Li2FeSiO4/C composite materials were successfully synthesized using the sol-gel method. The addition of carbon derived from the carbonization of citric acid improved the electronic conduction and enhanced the electrochemical performance. The LFS/C layer played a crucial role in improving electron and ion transfer and protecting against electrolyte attack.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jing Han, Jun Yang, Zhixin Xu, Hongping Li
Summary: The combination of LiMnPO4 and LiNCMO composite electrodes exhibits improved specific capacity and rate capability, attributed to the high electronic conductivity and Li+ diffusion of the composite materials.
Article
Physics, Multidisciplinary
Yumei Gao, Kaixiang Shen, Ping Liu, Liming Liu, Feng Chi, Xianhua Hou, Wenxin Yang
Summary: The article calculates the conductivity and potential energy of Na-doped LiNi1/3Co1/3Mn1/3O2 using density functional theory, finding that the material exhibits improved conductivity with a sodium doping level of x = 0.05 mol. Sodium doping is shown to reduce potential well and enhance lithium ion removal rate, in agreement with experimental results.
FRONTIERS IN PHYSICS
(2021)
Article
Engineering, Environmental
Yijun Song, Meiri Wang, Jing Li, Hongtao Cui, Hongjun Su, Yuanyuan Liu
Summary: This study successfully synthesized LiNi1/3Co1/3Mn1/3O2 material with superior performance using a high shear mixer-assisted coprecipitation method, offering high discharge capacity and excellent cycling stability, with potential for application in large-scale production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Sisi Zhou, Xianggong Zhang, Zhihao Zhang, Songting Liu, Rui Wang
Summary: LiNi1/3Co1/3Mn1/3O2 is a widely used commercial cathode material, but its energy density needs improvement. Coating a LiF layer on the surface of LiNi1/3Co1/3Mn1/3O2 can protect the material, improve interfacial stability, and enhance cyclic performance. The LiF-coated NCM exhibits higher capacity retention rates than the bare sample after 100 cycles. This study suggests that LiF surface layer is a promising method to enhance the electrochemical performance of NCM cathode materials.
Article
Electrochemistry
Pei-yao Li, Ying-de Huang, Lin-bo Tang, Han-xin Wei, Hao Fu, Zhen-jiang He, Jun-chao Zheng
Summary: A nanoscale LiNi1/3Co1/3Mn1/3O2(NCM111) material was successfully prepared via a hydrothermal lithiation process. The dissolution-recrystallization mechanism enabled the formation of nanoparticles, which shortened the diffusion channel of lithium ions and significantly improved the performance of the NCM111 material. Furthermore, W6+ doping improved the conductivity of the material and stabilized the layered structure, effectively inhibiting cation mixing.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Cheng-Hung Lin, Zhengyu Ju, Xiaoyin Zheng, Xiao Zhang, Nicole Zmich, Xiaoyang Liu, Kenneth J. Takeuchi, Amy C. Marschilok, Esther S. Takeuchi, Mingyuan Ge, Guihua Yu, Yu-chen Karen Chen-Wiegart
Summary: Modifying electrode materials and conductive fillers can enhance the performance and stability of electrodes. Three-dimensional quantification analysis of electrodes can provide a better understanding of the dimensionality effects of electrode materials.
Article
Chemistry, Physical
Haipeng Shan, Zhiming Zhang, Hui Cao, Binfeng Fan, Guangya Hou, Huazhen Cao, Yiping Tang, Guoqu Zheng
Summary: The degradation mechanism of LiNi1/3Co1/3Mn1/3O2 batteries is similar at different temperatures, with loss of active materials increasing with temperature. The evolution of the covering layer on the negative electrode surface is crucial for cycle life.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Qing Han, Chenguang Bao, Yongmei Xiao, Xuejing Qiu, Xinli Yang
Summary: In this study, a feasible sol-gel method combined with calcination was used to prepare LNCM, significantly improving its electrochemical activity and solving problems such as poor cycling stability, voltage degradation, and capacity loss during high-rate cycling. The results demonstrate that precise control of the calcination temperature of sol-gel-synthesized LNCM precursors can promote the development of LNCM cathodes suitable for advanced LIBs.
Article
Engineering, Chemical
RuiHao Shan, Xiaoxiao Lu, Yuankang Xu, Kefan Shen, Yang Xia, Yurong Cai, Juming Yao, Qinzhong Mao, Yinfeng Wang, Tongzong Ji
Summary: Single-crystal NCMs are considered promising cathode materials for next-generation lithium batteries due to their good cyclability and high safety. However, industrial production of single-crystal NCMs faces challenges of lengthy production steps, high production costs, and poor consistency. In this study, a Ni-Co-Mn ternary MOF was developed for the preparation of NCM cathode materials, which exhibited high activity and could be used to prepare single-crystal NCM111 (SC-NCM) through a regular sintering process. The as-prepared SC-NCM cathode materials showed a polyhedral structure with a smooth surface and demonstrated excellent cyclability and high specific capacities as a high-voltage cathode.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Mathematics, Applied
Frank Goering, Martin Winter
Summary: The article studies two exceptional polyhedra in 3-dimensional Euclidean space, namely the rhombic dodecahedron and the rhombic triacontahedron, which are the only known polytopes with edge-transitivity but without vertex-transitivity. It shows that these polyhedra do not have higher-dimensional analogues and that in dimension d >= 4, edge transitivity of convex polytopes implies vertex-transitivity.
ARS MATHEMATICA CONTEMPORANEA
(2023)
Article
Energy & Fuels
Christoph Peschel, Stefan van Wickeren, Aleksandra Bloch, Christian-Timo Lechtenfeld, Martin Winter, Sascha Nowak
Summary: In this article, we present an analytical approach for targeted identification of the hazardous compound 1,3-propane sultone (PS) in spent lithium ion battery material. We employed chromatographic techniques coupled to high-resolution accurate mass spectrometry to investigate PS decomposition. We defined 1-propanesulfonate as an ionic marker molecule for electrochemical PS decomposition and also identified volatile methyl and ethyl esters of 1-propanesulfonate. These decomposition markers can be used to identify hazardous PS-containing lithium ion battery material, even if the initial additive molecule is consumed.
Article
Chemistry, Multidisciplinary
Bastian von Holtum, Maximilian Kubot, Christoph Peschel, Uta Rodehorst, Martin Winter, Sascha Nowak, Simon Wiemers-Meyer
Summary: Despite extensive research in lithium ion and lithium metal batteries, there are still unanswered questions regarding the formation of the solid-electrolyte interphase (SEI) in lithium-metal-anode-based battery systems. This study presents a novel approach that combines the intrinsic behavior of lithium metal with state-of-the-art analytical methods to unravel the compound profile of the SEI. The results reveal the vast variety of compounds formed in carbonate-based electrolytes.
Article
Chemistry, Multidisciplinary
Lukas Haneke, Felix Pfeiffer, Peer Baermann, Jens Wrogemann, Christoph Peschel, Jonas Neumann, Fabian Kux, Sascha Nowak, Martin Winter, Tobias Placke
Summary: Pre-lithiation using cost-efficient electrolytes based on LiCl is successfully demonstrated for enabling lithium-ion battery full-cells with high silicon content negative electrodes. An optimized electrolyte based on gamma-butyrolactone and LiCl, with boron-containing additives and CO2, is shown to form a protective SEI on silicon thin films. This electrolytic pre-lithiation technique improves the capacity retention of NCM111||Si full-cells.
Article
Chemistry, Physical
Egy Adhitama, Marlena M. Bela, Feleke Demelash, Marian C. Stan, Martin Winter, Aurora Gomez-Martin, Tobias Placke
Summary: This study evaluates the practical applicability of thermal evaporation of Li metal as a prelithiation technique on silicon-based LIBs. It is found that prelithiated cells have higher initial discharge capacity, and the electrode capacity balancing has a significant impact on the performance and trade-off between cell lifetime and energy density.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Adjmal Ghaur, Christoph Peschel, Iris Dienwiebel, Lukas Haneke, Leilei Du, Laurin Profanter, Aurora Gomez-Martin, Martin Winter, Sascha Nowak, Tobias Placke
Summary: This study investigates the effect of fluorinated phosphazene compounds as electrolyte additives on the formation of the solid electrolyte interphase (SEI) in silicon oxide (SiOx)-based lithium-ion batteries. The results show that the dual-additive approach using fluoroethylene carbonate and hexafluorocyclotriphosphazene-derivatives (HFPN) in state-of-the-art electrolytes leads to synergistic effects, enhancing the electrochemical performance and stabilizing the electrolyte. Furthermore, using HFPN derivatives as an additive compound suppresses the decomposition of the electrolyte. This study is of great significance for improving the performance and practical application of lithium-ion batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jan-Philipp Hoffknecht, Alina Wettstein, Jaschar Atik, Christian Krause, Johannes Thienenkamp, Gunther Brunklaus, Martin Winter, Diddo Diddens, Andreas Heuer, Elie Paillard
Summary: Lithium salts with low coordinating anions such as bis(trifluoromethanesulfonyl)imide (TFSI) have been widely used in polyethylene oxide (PEO)-based dry polymer electrolytes. Recent research has shown that plasticizing PEO with TFSI-based ionic liquids (ILs) can increase conductivity and Li+ diffusivity. However, the Li+ transport mechanism remains unchanged and is limited by the polymer host matrix. This study suggests a new paradigm of using more coordinating anions such as trifluoromethanesulfonyl-N-cyanoamide (TFSAM) to enhance Li+ transport and achieve higher Li+ transference number.
ADVANCED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Lars Frankenstein, Pascal Glomb, Joaquin Ramirez-Rico, Martin Winter, Tobias Placke, Aurora Gomez-Martin
Summary: Graphitization of coffee ground was carried out using four different iron-based activating additives, and the impact on the structural development and electrochemical performance was investigated. The results showed that iron (III) chloride and iron powder achieved a maximum degree of graphitization between 55% and 74% respectively. The graphite anode material synthesized with iron powder exhibited a maximum reversible capacity of approximately 320 mAh g(-1) at a rate of 0.1 C. This study provides valuable insights into the design of synthetic graphite from renewable sources by considering the impact of activators.
Article
Chemistry, Multidisciplinary
Bastian von Holtum, Maximilian Kubot, Christoph Peschel, Uta Rodehorst, Martin Winter, Sascha Nowak, Simon Wiemers-Meyer
Summary: Despite intensive research in lithium ion and lithium metal batteries, the formation of solid-electrolyte interphase (SEI) in lithium-metal-anode-based battery systems still remains a challenge. This study presents a novel approach using gas, liquid electrolyte, and solid phase accumulation to unravel the SEI compound profile. By leveraging the intrinsic reactivity of lithium metal with the liquid electrolyte, this method offers qualitative and quantitative insights into the wide range of compounds formed in carbonate-based electrolytes through state-of-the-art analytical techniques.
Article
Electrochemistry
Luuk Kortekaas, Sebastian Fricke, Aleksandr Korshunov, Martin Winter, Isidora Cekic-Laskovic, Mariano Gruenebaum
Summary: As 3D-printing becomes more accessible, it offers new opportunities for sustainable and flexible design strategies in chemical processes. Redox-flow batteries (RFBs) are a promising solution for energy storage, but high capital costs pose a barrier to entry. This study presents a digital blueprint for 3D-printing RFBs, reducing the costs significantly and enabling more contributions to the field. Experimental results validate the stability of the lab-scale design and provide benchmark values for reproduction using different redox-pairs.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Physical
Linda Quach, Egy Adhitama, Valentin Goeldner, Ankita Das, Feleke Demelash, Martin Winter, Uwe Karst, Tobias Placke, Frank Glorius
Summary: Film-forming electrolyte additives are crucial for the performance and safety of high-energy-density lithium-ion batteries. This study synthesized derivatives and conducted analyses to investigate the impact of molecular substrate parameters on battery performance. The research aims to enhance the fundamental understanding of influential substrate parameters and guide the design of electrolyte additives for high-energy-density lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Lukas Herbers, Jaroslav Minar, Silvan Stuckenberg, Verena Kuepers, Debbie Berghus, Sascha Nowak, Martin Winter, Peter Bieker
Summary: In this study, a multilayered ternary solid polymer electrolyte (TSPE) was developed to meet the wide-ranging electrolyte requirements for Li metal anodes and different cathode materials. The TSPE exhibited high voltage stability, high Coulombic efficiency, and excellent cycling stability, along with high temperature stability and safety.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Physical
Tjark T. K. Ingber, Marlena M. Bela, Frederik Puettmann, Jan F. Dohmann, Peter Bieker, Markus Boerner, Martin Winter, Marian C. Stan
Summary: In zero-excess lithium metal batteries (ZELMBs), the use of 3D structured current collectors, such as open-porous Cu micro-foams, improves the Li deposition behavior and cycling characteristics. This study compares the surface and sub-surface Li deposits in open-porous 3D materials to deposits on 2D foils using cryogenic focused ion beam scanning electron microscopy. The results show that Cu micro-foams can store dendrite-free Li and reduce volume changes during Li deposition/dissolution.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Electrochemistry
Luuk Kortekaas, Sebastian Fricke, Aleksandr Korshunov, Martin Winter, Isidora Cekic-Laskovic, Mariano Gruenebaum
Summary: With the increasing accessibility of 3D printing, more sustainable and flexible design strategies can be applied to chemical processes. This paper presents a digital blueprint for printing one's own redox-flow battery, which allows for more contributions to the field of organic chemistry. Experimental results demonstrate the stability of the printed battery.
BATTERIES & SUPERCAPS
(2023)
Article
Electrochemistry
Gauthier Desmaizieres, Verena Perner, Daniel Wassy, Martin Kolek, Peter Bieker, Martin Winter, Birgit Esser
Summary: This study investigates the application of organic electrode materials as positive electrode materials for dual-ion batteries. The electrochemical performance can be tuned by structural modification. The structure and spacing of the polymers have important effects on cycling stability and specific capacity.
BATTERIES & SUPERCAPS
(2023)
