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Mengesha TH, Jeyakumar J, Hendri YB, Wu YS, Yang CC, Pham QT, Chern CS, Brunklaus G, Winter M, Hwang BJ. Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi 0.8Co 0.1Mn 0.1O 2 Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries. ACS Appl Mater Interfaces 2024. [PMID: 38606845 DOI: 10.1021/acsami.3c19386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
To address the issue that a single coating agent cannot simultaneously enhance Li+-ion transport and electronic conductivity of Ni-rich cathode materials with surface modification, in the present study, we first successfully synthesized a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material by a Taylor-flow reactor followed by surface coating with Li-BTJ and dispersion of vapor-grown carbon fibers treated with polydopamine (PDA-VGCF) filler in the composite slurry. The Li-BTJ hybrid oligomer coating can suppress side reactions and enhance ionic conductivity, and the PDA-VGCFs filler can increase electronic conductivity. As a result of the synergistic effect of the dual conducting agents, the cells based on the modified NCM811 electrodes deliver superior cycling stability and rate capability, as compared to the bare NCM811 electrode. The CR2032 coin-type cells with the NCM811@Li-BTJ + PDA-VGCF electrode retain a discharge specific capacity of ∼92.2% at 1C after 200 cycles between 2.8 and 4.3 V (vs Li/Li+), while bare NCM811 retains only 84.0%. Moreover, the NCM811@Li-BTJ + PDA-VGCF electrode-based cells reduced the total heat (Qt) by ca. 7.0% at 35 °C over the bare electrode. Remarkably, the Li-BTJ hybrid oligomer coating on the surface of the NCM811 active particles acts as an artificial cathode electrolyte interphase (ACEI) layer, mitigating irreversible surface phase transformation of the layered NCM811 cathode and facilitating Li+ ion transport. Meanwhile, the fiber-shaped PDA-VGCF filler significantly reduced microcrack propagation during cycling and promoted the electronic conductance of the NCM811-based electrode. Generally, enlightened with the current experimental findings, the concerted ion and electron conductive agents significantly enhanced the Ni-rich cathode-based cell performance, which is a promising strategy to apply to other Ni-rich cathode materials for lithium-ion batteries.
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Affiliation(s)
- Tadesu Hailu Mengesha
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- College of Natural and Computational Science, Department of Chemistry, Wolkite University, Wolkite 07, SNNPR, Ethiopia
| | - Juliya Jeyakumar
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Yola Bertilsya Hendri
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan City 333323, Taiwan
| | - Quoc-Thai Pham
- Department of Chemical and Materials Engineering, National Ilan University, Yilan County, Yilan City, 260007, Taiwan, ROC
| | - Chorng-Shyan Chern
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan, ROC
| | - Gunther Brunklaus
- Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstraße 46, Münster 48149, Germany
| | - Martin Winter
- Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstraße 46, Münster 48149, Germany
- University of Münster, MEET Battery Research Center, Institute of Physical Chemistry, Corrensstraße 46, Münster 48149, Germany
| | - Bing Joe Hwang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan, ROC
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Jeyakumar J, Seenivasan M, Wu YS, Wu SH, Chang JK, Jose R, Yang CC. Preparation of long-term cycling stable ni-rich concentration-gradient NCMA cathode materials for li-ion batteries. J Colloid Interface Sci 2023; 639:145-159. [PMID: 36804788 DOI: 10.1016/j.jcis.2023.02.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/07/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
Nickel-rich (Ni > 90 %) cathodes are regarded as one of the most attractive because of their high energy density, despite their poor stability and cycle life. To improve their performance, in this study we synthesized a double concentration-gradient layered Li[Ni0.90Co0.04Mn0.03Al0.03]O2 oxide (CG-NCMA) using a continuous co-precipitation Taylor-Couette cylindrical reactor (TCCR) with a Ni-rich-core, an Mn-rich surface, and Al on top. The concentration-gradient morphology was confirmed through cross-sectional EDX line scanning. The as-synthesized sample exhibited excellent electrochemical performance at high rates (5C/10C), as well as cyclability (91.5 % after 100 cycles and 70.3 % after 500 cycles at 1C), superior to that (83.4 % and 47.6 %) of its non-concentration-gradient counterpart (UC-NCMA). The Mn-rich surface and presence of Al helped the material stay structurally robust, even after 500 cycles, while also suppressing side reactions between the electrode and electrolyte, resulting in better overall electrochemical performance. These enhancements in performance were studied using TEM, SEM, in-situ-XRD, XPS, CV, EIS and post-mortem analyses. This synthetic method enables the highly scalable production of CG-NCMA samples with two concentration-gradient structures for practical applications in Li-ion batteries.
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Affiliation(s)
- Juliya Jeyakumar
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan, ROC
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Taoyuan City 333, Taiwan, ROC.
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