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Seenivasan M, Yang CC, Wu SH, Chang JK, Jose R. Systematic study of Co-free LiNi 0.9Mn 0.07Al 0.03O 2 Ni-rich cathode materials to realize high-energy density Li-ion batteries. J Colloid Interface Sci 2024; 661:1070-1081. [PMID: 38368230 DOI: 10.1016/j.jcis.2024.02.040] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/19/2024]
Abstract
The growing use of EVs and society's energy needs require safe, affordable, durable, and eco-friendly high-energy lithium-ion batteries (LIBs). To this end, we synthesized and investigated the removal of Co from Al-doped Ni-rich cathode materials, specifically LiNi0.9Co0.1Al0.0O2 (NCA-0), LiNi0.9Mn0.1Al0.0O2 (NMA-0), LiNi0.9Mn0.07Al0.03O2 (NMA-3), intending to enhance LIB performance and reduce the reliance on cobalt, a costly and scarce resource. Our study primarily focuses on how the removal of Co affects the material characteristics of Ni-rich cathode material and further introduces aluminum into the cathode composition to study its impacts on electrochemical properties and overall performance. Among the synthesized samples, we discovered that the NMA-3 sample, modified with 3 mol% of Al, exhibited superior battery performance, demonstrating the effectiveness of aluminum in promoting cathode stability. Furthermore, the Al-modified cathode showed promising cycle life under normal and high-temperature conditions. Our NMA-3 demonstrated remarkable capacity retention of ∼ 88 % at 25 °C and ∼ 81 % at 45 °C after 200 cycles at 1C, within a voltage range of 2.8-4.3 V, closely matching the performances of conventional NCM and NCA cathodes. Without cobalt, the cathodes exhibited increased cation disorder leading to inferior rate capabilities at high C-rates. In-situ transmission XRD analysis revealed that the introduction of Al has reduced the phase change and provided much-needed stability to the overall structure of the Co-free NMA-3. Altogether, the findings suggest that our aluminum-modified NMA-3 sample offers a promising approach to developing Co-free, Ni-rich cathodes, effectively paving the way toward sustainable, high-energy-density LIBs.
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Affiliation(s)
- Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan City 333, Taiwan.
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, 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
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Hendri YB, Kuo LY, Seenivasan M, Wu YS, Wu SH, Chang JK, Jose R, Ihrig M, Kaghazchi P, Yang CC. Two birds with one stone: One-pot concurrent Ta-doping and -coating on Ni-rich LiNi 0.92Co 0.04Mn 0.04O 2 cathode materials with fiber-type microstructure and Li +-conducting layer formation. J Colloid Interface Sci 2024; 661:289-306. [PMID: 38301467 DOI: 10.1016/j.jcis.2024.01.094] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/19/2023] [Accepted: 01/13/2024] [Indexed: 02/03/2024]
Abstract
A novel scalable Taylor-Couette reactor (TCR) synthesis method was employed to prepare Ta-modified LiNi0.92Co0.04Mn0.04O2 (T-NCM92) with different Ta contents. Through experiments and density functional theory (DFT) calculations, the phase and microstructure of Ta-modified NCM92 were analyzed, showing that Ta provides a bifunctional (doping and coating at one time) effect on LiNi0.92Co0.04Mn0.04O2 cathode material through a one-step synthesis process via a controlling suitable amount of Ta and Li-salt. Ta doping allows the tailoring of the microstructure, orientation, and morphology of the primary NCM92 particles, resulting in a needle-like shape with fine structures that considerably enhance Li+ ion diffusion and electrochemical charge/discharge stability. The Ta-based surface-coating layer effectively prevented microcrack formation and inhibited electrolyte decomposition and surface-side reactions during cycling, thereby significantly improving the electrochemical performance and long-term cycling stability of NCM92 cathodes. Our as-prepared NCM92 modified with 0.2 mol% Ta (i.e., T2-NCM92) exhibits outstanding cyclability, retaining 84.5 % capacity at 4.3 V, 78.3 % at 4.5 V, and 67.6 % at 45 ℃ after 200 cycles at 1C. Even under high-rate conditions (10C), T2-NCM92 demonstrated a remarkable capacity retention of 66.9 % after 100 cycles, with an initial discharge capacity of 157.6 mAh g-1. Thus, the Ta modification of Ni-rich NCM92 materials is a promising option for optimizing NCM cathode materials and enabling their use in real-world electric vehicle (EV) applications.
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Affiliation(s)
- Yola Bertilsya Hendri
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Liang-Yin Kuo
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Martin Ihrig
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec. 4, Da'an Dist., Taipei City 106335, Taiwan
| | - Payam Kaghazchi
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1) Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technology, Chang Gung University, Taoyuan City 333, Taiwan.
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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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Seenivasan M, Yang C, Wu SH, Li YJJ, Chien WC, Piraman S, Lue SJ. Improving structural and thermal stability of LiNi0.8Co0.15Al0.05O2 by a fast-ionic-conductive LiAlSiO4 surface coating for Li-ion batteries. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138620] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Chandramohan G, Dineshkumar T, Arul R, Seenivasan M, Dhanapriya J, Sakthirajan R, Balasubramaniyan T, Gopalakrishnan N. Spectrum of Hypokalemic Paralysis from a Tertiary Care Center in India. Indian J Nephrol 2018; 28:365-369. [PMID: 30270997 PMCID: PMC6146732 DOI: 10.4103/ijn.ijn_225_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Hypokalemic paralysis is an important and reversible cause of acute flaccid paralysis. The treating physician faces unique diagnostic and therapeutic challenges. We did a prospective study and included all patients with acute flaccid weakness and documented serum potassium of <3.5 mEq/L during the period between January 2009 and August 2015. We studied the incidence, etiology, clinical profile, and acid-base disturbances in patients presenting with hypokalemic paralysis and analyzed the significance of periodic and non-periodic forms of hypokalemic paralysis on patient's outcome. Two hundred and six patients were studied with a mean follow-up of 3.6 ± 1.2 years. Mean age was 37.61 ± 2.2 years (range 18-50 years). Males were predominant (M:F ratio 2.1:1). The nonperiodic form of hypokalemic paralysis was the most common (61%). Eighty-one (39%) patients had metabolic acidosis, 78 (38%) had normal acid-base status, and 47 (23%) patients had metabolic alkalosis. The most common secondary cause was distal renal tubular acidosis (RTA) (n = 75, 36%), followed by Gitelman syndrome (n = 39, 18%), thyrotoxic paralysis (n = 8, 4%), hyperaldosteronism (n = 7, 3%), and proximal RTA (n = 6, 4%). Patients with non-periodic paralysis had more urinary loss (40.1 vs. 12.2 mmol, P = 0.04), more requirement of potassium replacement (120 vs. 48 mmol, P = 0.05), and longer recovery time of weakness (48.1 vs. 16.5 h, P = 0.05) than patients with periodic paralysis. Non-periodic form of hypokalemic paralysis was the most common variant in our study. Patients with periodic paralysis had significant incidence of rebound hyperkalemia.
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Affiliation(s)
- G Chandramohan
- Department of Nephrology, Government Mohan Kumaramangalam Medical College, Salem, Tamil Nadu, India
| | - T Dineshkumar
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - R Arul
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - M Seenivasan
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - J Dhanapriya
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - R Sakthirajan
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - T Balasubramaniyan
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
| | - N Gopalakrishnan
- Institute of Nephrology, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, Tamil Nadu, India
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Gopalakrishnan N, Dhanapriya J, Seenivasan M, Dineshkumar T, Sakthirajan R, Balasubramaniyan T. Secondary Hyperkalemic Paralysis and Acute Kidney Injury Due to Rhabdomyolysis Caused by Sea-Snake Envenomation. Toxicol Int 2016. [DOI: 10.22506/ti/2016/v23/i1/146678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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