Article
Materials Science, Ceramics
Hadi Sharifidarabad, Alireza Zakeri, Mandana Adeli
Summary: Due to the shortage of primary resources and environmental concerns, proper management of electronic waste is crucial. This study focused on the co-recycling of used zinc-carbon and lithium-ion batteries to recover manganese and lithium for the synthesis of LiMn2O4 spinel cathode. The synthesized cathode material exhibited good electrochemical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Shwetambar Patel, Ranveer Kumar, Soniya Patel, Sunil Soni, Pushpendra Singh
Summary: Cubic spinel LiMn2O4 (LMO) nanomaterial was modified with an AlPO4 (AlP) nano-layer to improve its electrochemical performance. The AlPO4 coating effectively prevented the increase in charge transfer resistance during charge-discharge process, allowing the AlP-LMO cathode to maintain its initial discharge capacity of 147.6 mAh g(-1), while the pristine LiMn2O4 cathode only had an initial discharge capacity of 116.4 mAh g(-1). Structural and morphological analyses confirmed the presence of the AlPO4 layer which did not affect the bulk structure of LMO.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Hongxiang Ji, Liubin Ben, Shan Wang, Zhongzhu Liu, Robson Monteiro, Rogerio Ribas, Hailong Yu, Peng Gao, Yongming Zhu, Xuejie Huang
Summary: The research demonstrates that by precisely controlling the coating concentration and temperature, Nb2O5 can effectively bond to the surface of LiMn2O4 spinel cathode material, significantly improving the electrochemical performance. However, at high coating concentrations, Nb5+ ions diffuse into the cathode structure, leading to a decrease in cycling performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
Xin Wang, Heng Wang, Jianfeng Wen, Yu Tan, Yaping Zeng
Summary: Spinel LiMn2O4 modified with perovskite LaCoO3 shows improved electrochemical performance, with the 2% LaCoO3 modification exhibiting higher capacity and cycling stability at low rates, while the cathode modified with 4% LaCoO3 performs best at high rates.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Yuxin Zhang, Anyang Hu, Dawei Xia, Sooyeon Hwang, Sami Sainio, Dennis Nordlund, F. Marc Michel, Robert B. B. Moore, Luxi Li, Feng Lin
Summary: Operando synchrotron experiments provide insights into the Mn dissolution/redeposition dynamics in Mn-containing cathodes and demonstrate the effectiveness of ion-capturing polymers in regulating Mn interfacial dynamics. Mn dissolution is a major issue that negatively affects the performance of Mn-based battery materials. This study visualizes and quantifies the dynamic Mn dissolution/redeposition process in Mn-containing cathodes and identifies the contributions of different interfacial degradation mechanisms at different states of charge. The introduction of sulfonated polymers (Nafion) into composite electrodes can successfully modulate the Mn dissolution/redeposition dynamics and improve battery performance.
NATURE NANOTECHNOLOGY
(2023)
Article
Electrochemistry
Khushnuda Nur, Christoph Roitzheim, Martin Finsterbusch, Martin Bram, Olivier Guillon
Summary: This study demonstrates that cold sintering can effectively densify LiMn2O4 at lower temperatures, leading to improved discharge capacity and cycling stability without the need for post-annealing treatment. This is achieved through the removal/thinning of the insulating Li2CO3 layer.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Xinghui Liang, Hun Kim, Hun-Gi Jung, Yang-Kook Sun
Summary: A Li-substituted, tunnel/spinel heterostructured cathode has been successfully synthesized in this study, with Li dopant acting as a pillar to inhibit unfavorable multiphase transformation and provide 3D Na+ diffusion channels for improved sodium storage performance and redox reaction kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Crystallography
Feng Yu, Yi Wang, Cong Guo, He Liu, Weizhai Bao, Jingfa Li, Panpan Zhang, Faxing Wang
Summary: Single-crystal layered oxides show better cycle stability compared to their polycrystalline counterparts in Li-ion batteries, mainly due to restrained intergranular cracking. In this study, the Li-ion storage properties of single-crystal and polycrystalline spinel LiMn2O4 cathodes with similar particle sizes were investigated in a wide voltage window. The single-crystal cathode exhibited higher specific capacity in the 3 V region, but the polycrystalline cathode displayed better cycle stability. This research reveals that the phase transition-induced Mn(II) ion dissolution rather than cracking formation is the limiting factor for the cycle performance of spinel LiMn2O4 in the wide voltage window.
Article
Chemistry, Physical
Monika Michalska, Dominika A. Buchberger, Jacek B. Jasinski, Arjun K. Thapa, Amrita Jain
Summary: The electrochemical performance of lithium manganese oxide composites with graphene oxide in Li-ion batteries was studied, showing that the composite with 5%wt. graphene oxide exhibited better capacity retention after cycling.
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
Materials Science, Multidisciplinary
Bao Zhang, Yingjie Zhang, Qi Zhang, Yifeng Gao, Bowen Zhu, Rui Gong, Zhengwu Wang, JiaoJiao Bu, Zheng Lian, Kai Zhou, Peng Dong, Yannan Zhang
Summary: In this study, Sm3+, Mo6+ dual-doped LiMn2O4 positive materials were fabricated using a solid phase strategy. The electrochemical test results showed that the material exhibited high discharge capacity and capacity retention at high rates, as well as lower manganese dissolution in organic electrolyte. This suggests that the co-doping of Sm3+ and Mo6+ can effectively enhance the structural stability and electrochemical properties of spinel Mn-based positive electrodes.
Article
Chemistry, Multidisciplinary
ThankGod C. Egemonye, Hitler Louis, Tomsmith O. Unimuke, E. Gber Terkumbur, Henry O. Edet, Victoria M. Bassey, Adedapo S. Adeyinka
Summary: Organic carbonyl-based compounds have gained attention as organic cathode materials in lithium-ion batteries (LIBs) due to their high cyclability, low cost, and tunable chemical structure. However, their utilization is limited by poor charge capacity and dissolution in electrolytes. In this study, cyclohexanone derivatives were theoretically investigated, and it was found that compound H-2 and H-3 exhibited promising electrochemical properties, making them suitable as organic cathode materials for LIBs.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yikai Wang, Shaohua Luo, Pengwei Li, Haoran Zhang, Shengxue Yan, Hui Li, Yong Tian, Fei Teng, Qing Wang, Aiqian He, Fuchang Zhuge
Summary: The main work of this paper is to synthesize lithium manganese spinel cathode material using the traditional high-temperature solid-state synthesis method, and improve its cycle performance through doping. The doping of Mg2+ reduces the content of Mn3+ in the material, leading to higher structural stability and reduced dissolution of Mn. Among the synthesized materials, LiMg0.04Mn1.96O4 exhibits the best cycling performance with high initial discharge capacity and good capacity retention.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Donghyeon Kang, Robert E. Warburton, Anil U. Mane, Jeffrey Greeley, Jeffrey W. Elam
Summary: In this study, the effects of different Al precursors on the growth chemistry, interfacial structure, and electrochemistry of Al2O3 coatings on LMO surfaces were investigated. The results show that the Lewis acid-base properties of the Al precursor ligands can be used to control the Mn oxidation states and the coverage of Al2O3 on the LMO surface. Theoretical calculations and experimental measurements support this finding and provide insights into the reaction mechanism and thermochemistry. This research has important implications for atomic level control of functionalized interfaces in various applications.
APPLIED SURFACE SCIENCE
(2022)