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Yu H, Jin H, Zhao F, Li Z, Huang Y. Insights into the Deterioration Mechanism of Charging Ability during Calendar Aging and Cycling Aging of High-Voltage Co-Poor NCM Cathode-Graphite Full Battery. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39382455 DOI: 10.1021/acsami.4c07052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
Lithium-ion battery (LIB) has gained significant recognition for the power cell market owing to its impressive energy density and appealing cost benefit. Among various cathodes, a high-voltage cobalt-poor lithium nickel manganese cobalt oxide cathode (Co-poor NCM cathode) has been considered as a promising strategy to enhance its energy density. Despite these advantages, high-voltage Co-poor NCM cathode-graphite full battery usually suffers from poor rate performance. However, fast charging has been a key indicator for widespread application of power batteries. Although many efforts have been made to improve the charging performance of fresh batteries, few works investigate the charging ability during calendar aging and cycling aging of high-voltage Co-poor NCM cathode-graphite full battery. In this work, we found that the charging ability becomes worse during calendar aging and cycling aging. Results showed that the increasing charge transfer resistance from the cathode is the major obstacle to achieving fast charging during the aging process. To address the problem, high-voltage Al2O3-coated Co-poor NCM cathode successfully prepared via a simple atomic layer deposition (ALD) method has been developed to reduce the decay of charging performance during calendar aging and cycling aging. Al2O3-coated NCM cathode can effectively reduce the growth rate of the resistance of cathode, which is benefiting from the conversion of Al2O3 into LiAlO2 with high ionic conductivity and the restriction formation of rock salt phase. Benefiting from the decreased charge transfer resistance of the NCM cathode, the mismatch of the lithium-ion reaction kinetics is well alleviated, thus effectively reducing the polarization under fast charging. As a result, Al2O3-coated NCM cathode-graphite full battery shows the slow deterioration of charging performance during the aging process. This work provides a promising strategy for constructing fast-charging batteries during calendar aging and cycling aging.
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Affiliation(s)
- Honggang Yu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Contemporary Amperex Technology Co., Ltd, Ningde 352100, China
| | - Haizu Jin
- Contemporary Amperex Technology Co., Ltd, Ningde 352100, China
| | - Fenggang Zhao
- Contemporary Amperex Technology Co., Ltd, Ningde 352100, China
| | - Zhen Li
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yunhui Huang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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2
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Yang W, Zhu X, Zeng Z, Mao Y, Chen T, Wu Z. Unveiling the Stability Mechanism of Oriented Ni-Rich Layered Oxides. ACS APPLIED MATERIALS & INTERFACES 2024; 16:46351-46362. [PMID: 39178015 DOI: 10.1021/acsami.4c09609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Single-crystal and polycrystalline structures are the two main structural forms of the Ni-rich layered cathode for lithium-ion batteries. The structural difference is closely related to the electrochemical performance and thermal stability, but its internal mechanism is unclear and is worthy of further exploration. In this study, both polycrystalline and single-crystal LiNi0.83Co0.12Mn0.05O2 cathodes were prepared by adjusting the calcination temperature and mechanical post-treatment, respectively. Systematic comparisons were made to assess the effects of different grain structures on the electrochemical performance and thermal stability. The study revealed the superior thermal stability of monocrystalline cathodes, attributing it to oxygen vacancies and phase transitions. From the perspective of grain boundaries, it was demonstrated that the diffusion of oxygen vacancies and the reduction of Ni in polycrystalline cathodes exhibit anisotropy. This research elucidates the origins of the superior thermal stability of monocrystalline cathodes in lithium-ion batteries, providing valuable insights into battery material design.
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Affiliation(s)
- Wen Yang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, P. R. China
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xiaomu Zhu
- Department of Pharmacy, West China Hospital of Sichuan University, Chengdu 610065, P. R. China
| | - Zeng Zeng
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, P. R. China
| | - Yuanying Mao
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, P. R. China
| | - Ting Chen
- Institute for Advanced Study, Chengdu University, Chengdu 610106, P. R. China
| | - Zhenguo Wu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
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3
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Kumar D, Ramesha K. Comprehensive Study of Ti and Ta Co-Doping in Ni-Rich Cathode Material LiNi 0.8Mn 0.1Co 0.1O 2 Towards Improving the Electrochemical Performance. Chemphyschem 2024; 25:e202400064. [PMID: 38575386 DOI: 10.1002/cphc.202400064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/06/2024]
Abstract
Layered Ni-rich oxides (LiNi1-x-yCoxMnyO2) cathode materials are of current interest in high-energy-demanding applications, such as electric vehicles because of high discharge capacity and high intercalation potential. Here, the effect of co-doping a small amount of Ti and Ta on the crystal structure, morphology, and electrochemical properties of high Ni-rich cathode material LiNi0.8Mn0.1Co0.1-x-yTixTayO2 (0.0≤x+y≤0.2) was systematically investigated. This work demonstrates that an optimum level of Ti and Ta doping is beneficial towards enhancing electrochemical performance. The optimal Ti4+ and Ta5+ co-doped cathode LiNi0.8Mn0.1Co0.09Ti0.005Ta0.005O2 exhibits a superior initial discharge capacity of 161.1 mAh g-1 at 1 C, and excellent capacity retention of 87.1 % after 250 cycles, compared to the pristine sample that exhibits only 59.8 % capacity retention. Moreover, the lithium-ion diffusion coefficients for the co-doped cathode after the 3rd and 50th cycles are 9.9×10-10 cm2 s-1 and 9.3×10-10 cm2 s-1 respectively, which is higher than that of the pristine cathode (3.3×10-10 cm2 s-1 and 2.5×10-10 cm2 s-1 respectively). Based on these studies, we conclude that Ti and Ta co-doping enhances structural stability by mitigating irreversible phase transformation, improving Li-ion kinetics by expanding interlayer spacing, and nanosizing primary particles, thereby stabilizing high-nickel cathode materials and significantly enhancing cyclability.
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Affiliation(s)
- Deepak Kumar
- CSIR-Central Electrochemical Research Institute, Madras Unit, CSIR Madras Complex, Taramani, Chennai, 600113, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - K Ramesha
- CSIR-Central Electrochemical Research Institute, Madras Unit, CSIR Madras Complex, Taramani, Chennai, 600113, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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4
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Synthesis of LiNi
0.6
Co
0.2
Mn
0.2
O
2
Using Supercritical Carbon Dioxide as a Cathode Material for Lithium‐Ion Batteries. ChemElectroChem 2022. [DOI: 10.1002/celc.202201021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Lu SJ, Tang LB, Wei HX, Huang YD, Yan C, He ZJ, Li YJ, Mao J, Dai K, Zheng JC. Single-Crystal Nickel-Based Cathodes: Fundamentals and Recent Advances. ELECTROCHEM ENERGY R 2022. [DOI: 10.1007/s41918-022-00166-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractLithium-ion batteries (LIBs) represent the most promising choice for meeting the ever-growing demand of society for various electric applications, such as electric transportation, portable electronics, and grid storage. Nickel-rich layered oxides have largely replaced LiCoO2 in commercial batteries because of their low cost, high energy density, and good reliability. Traditional nickel-based oxide particles, usually called polycrystal materials, are composed of microsized primary particles. However, polycrystal particles tend to suffer from pulverization and severe side reactions along grain boundaries during cycling. These phenomena accelerate cell degradation. Single-crystal materials, which exhibit robust mechanical strength and a high surface area, have great potential to address the challenges that hinder their polycrystal counterparts. A comprehensive understanding of the growing body of research related to single-crystal materials is imperative to improve the performance of cathodes in LIBs. This review highlights origins, recent developments, challenges, and opportunities for single-crystal layered oxide cathodes. The synthesis science behind single-crystal materials and comparative studies between single-crystal and polycrystal materials are discussed in detail. Industrial techniques and facilities are also reviewed in combination with our group’s experiences in single-crystal research. Future development should focus on facile production with strong control of the particle size and distribution, structural defects, and impurities to fully reap the benefits of single-crystal materials.
Graphical abstract
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6
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Sanglay GDD, Garcia JS, Palaganas MS, Sorolla M, See S, Limjuco LA, Ocon JD. Borate-Based Compounds as Mixed Polyanion Cathode Materials for Advanced Batteries. Molecules 2022; 27:molecules27228047. [PMID: 36432146 PMCID: PMC9695605 DOI: 10.3390/molecules27228047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
Rational design of new and cost-effective advanced batteries for the intended scale of application is concurrent with cathode materials development. Foundational knowledge of cathode materials’ processing−structure−properties−performance relationship is integral. In this review, we provide an overview of borate-based compounds as possible mixed polyanion cathode materials in organic electrolyte metal-ion batteries. A recapitulation of lithium-ion battery (LIB) cathode materials development provides that rationale. The combined method of data mining and high-throughput ab initio computing was briefly discussed to derive how carbonate-based compounds in sidorenkite structure were suggested. Borate-based compounds, albeit just close to stability (viz., <30 meV at−1), offer tunability and versatility and hence, potential effectivity as polyanion cathodes due to (1) diverse structures which can host alkali metal intercalation; (2) the low weight of borate relative to mature polyanion families which can translate to higher theoretical capacity; and a (3) rich chemistry which can alter the inductive effect on earth-abundant transition metals (e.g., Ni and Fe), potentially improving the open-circuit voltage (OCV) of the cell. This review paper provides a reference on the structures, properties, and synthesis routes of known borate-based compounds [viz., borophosphate (BPO), borosilicate (BSiO), and borosulfate (BSO)], as these borate-based compounds are untapped despite their potential for mixed polyanion cathode materials for advanced batteries.
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Affiliation(s)
- Giancarlo Dominador D. Sanglay
- Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- Energy Engineering Program, National Graduate School of Engineering, College of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Jayson S. Garcia
- Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- Energy Engineering Program, National Graduate School of Engineering, College of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Mecaelah S. Palaganas
- Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Maurice Sorolla
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
- Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Sean See
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
- Institute of Chemistry, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Lawrence A. Limjuco
- Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
- College of Engineering, University of Southeastern Philippines, Obrero, Davao City 8000, Philippines
| | - Joey D. Ocon
- Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- Energy Engineering Program, National Graduate School of Engineering, College of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
- DOST-NICER Advanced Batteries Center, University of the Philippines Diliman, Quezon City 1101, Philippines
- Correspondence:
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7
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You L, Wen Y, Chu B, Li G, Huang B, Wu J, Huang T, Yu A. Effects of Co/Mn Content Variation on Structural and Electrochemical Properties of Single-Crystal Ni-Rich Layered Oxide Materials for Lithium Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24620-24635. [PMID: 35588249 DOI: 10.1021/acsami.2c04821] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of single-crystal nickel-rich layered LiNixCoyMn1-x-yO2 materials (S-NCMs) represents the most significant progress for the electrification applications of nickel-rich ternary materials. There has been prior research on the important role of transition metal elements in agglomerated materials, supplemented by surface and internal lattice optimization to drive the performance improvements. However, studies on S-NCMs, especially on the role of transition metals (TM, i.e., Co and Mn), have not been reported. In this study, we synthesized four kinds of S-NCMs with different Co/Mn contents and studied their structural, electrochemical, kinetic, and thermodynamic properties with different Co/Mn contents. The results were as follows: (1) Electrochemically, Co was more effective than Mn at 25 °C at enhancing the intercalation/deintercalation kinetics, which resulted in an increased discharge capacity, an improved rate capability, and a reduced energy loss. (2) Thermodynamically, Mn was more effective at maintaining a higher thermal stability than Co, especially at a low cutoff voltage, but at a high cutoff voltage, the difference between the action of Co and Mn decreased. The main finding of this work was the enhanced structural stability provided by Co, which could be attributed to the following: (i) the absence of the H2/H3 phase transformation when Co exceeded 15%, which inhibited the irreversible phase transformation and reduced the volume strain, and (ii) the lower degrees of decrease in the cell parameters a and c with higher contents of Co, which contributed to a low cracking degree along the (003) crystal plane. The current work provides an important reference for the single-crystallization strategy of nickel-rich materials.
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Affiliation(s)
- Longzhen You
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Ya Wen
- Jiangmen Kanhoo Industry Co., Ltd., Jiangmen, Guangdong 529040, China
| | - Binbin Chu
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Guangxin Li
- Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Ben Huang
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Jianhua Wu
- Jiangmen Kanhoo Industry Co., Ltd., Jiangmen, Guangdong 529040, China
| | - Tao Huang
- Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Aishui Yu
- Department of Chemistry, Fudan University, Shanghai 200438, China
- Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
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8
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Feng Z, Zhang S, Huang X, Ren Y, Sun D, Tang Y, Yan Q, Wang H. Interfacial Reviving of the Degraded LiNi 0.8 Co 0.1 Mn 0.1 O 2 Cathode by LiPO 3 Repair Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107346. [PMID: 35254003 DOI: 10.1002/smll.202107346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Nickel-rich cathode materials, owing to their high energy density and low cost, are considered to be one of the cathodes with the most potential in next-generation lithium-ion batteries. Unfortunately, this kind of cathode with highly active surface is easy to react with H2 O and CO2 when exposed to ambient air, resulting in the formation of lithium impurities and interfacial phase transition as well as deterioration of the electrochemical properties. In this work, the evolution mechanism of the structure and interface of LiNi0.8 Co0.1 Mn0.1 O2 during air-exposure is systematically investigated. Furthermore, a facile reviving strategy is proposed to restore the degraded LiNi0.8 Co0.1 Mn0.1 O2 by using LiPO3 as the repair agent. The lithium impurities on the surface of the degraded sample can transform into the repair/coating layer, and part of the rock salt phase on the subsurface can revive to layered phase after repair heat treatment. As a result, the optimized cathode delivers an initial discharge capacity of 198.3 mAh g-1 at 0.1C and a capacity retention of 85.5% after 50 cycles. Although slightly lower than the bare sample (201 mAh g-1 and 88%), they are obviously higher than the exposed samples (166.5 mAh g-1 and 40.4%). The regenerated electrochemical properties should be attributed to the multifunctional repair layer that can efficiently reduce the surface lithium impurities, prevent the corrosion of electrolyte, and improve the interfacial Li+ diffusion kinetics. This work can effectively reduce the waste of the degraded Ni-rich ternary materials and realize the transformation of "waste" into wealth.
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Affiliation(s)
- Ze Feng
- Hunan Provincial Key Laboratory of Chemical Power Sources, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Shan Zhang
- Hunan Provincial Key Laboratory of Chemical Power Sources, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Xiaobing Huang
- Hunan Provincial Key Laboratory for Control Technology of Distributed Electric Propulsion Aircraft, Hunan Provincial Key Laboratory of Water Treatment Functional Materials, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde, 415000, P. R. China
| | - Yurong Ren
- School of Materials Science and Engineering, Jiangsu Province Intelligent Manufacturing Technology Engineering Research Center for the New Energy Vehicle Power Battery, Changzhou University, Changzhou, 213164, P. R. China
| | - Dan Sun
- Hunan Provincial Key Laboratory of Chemical Power Sources, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Yougen Tang
- Hunan Provincial Key Laboratory of Chemical Power Sources, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Qunxuan Yan
- Hunan Keyking Recycling Technology Co. Ltd., Hengyang, 421008, P. R. China
| | - Haiyan Wang
- Hunan Provincial Key Laboratory of Chemical Power Sources, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
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9
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Lopez S, Akizu-Gardoki O, Lizundia E. Comparative life cycle assessment of high performance lithium-sulfur battery cathodes. JOURNAL OF CLEANER PRODUCTION 2021; 282:124528. [PMID: 33041531 PMCID: PMC7537670 DOI: 10.1016/j.jclepro.2020.124528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 09/29/2020] [Accepted: 10/04/2020] [Indexed: 05/24/2023]
Abstract
Lithium-sulfur (Li-S) batteries present a great potential to displace current energy storage chemistries thanks to their energy density that goes far beyond conventional batteries. To promote the development of greener Li-S batteries, closing the existing gap between the quantification of the potential environmental impacts associated with Li-S cathodes and their performance is required. Herein we show a comparative analysis of the life cycle environmental impacts of five Li-S battery cathodes with high sulfur loadings (1.5-15 mg·cm-2) through life cycle assessment (LCA) methodology and cradle-to-gate boundary. Depending on the selected battery, the environmental impact can be reduced by a factor up to 5. LCA results from Li-S batteries are compared with the conventional lithium ion battery from Ecoinvent 3.6 database, showing a decreased environmental impact per kWh of storage capacity. A predominant role of the electrolyte on the environmental burdens associated with the use of Li-S batteries was also found. Sensitivity analysis shows that the specific impacts can be reduced by up to 70% by limiting the amount of used electrolyte. Overall, this manuscript emphasizes the potential of Li-S technology to develop environmentally benign batteries aimed at replacing existing energy storage systems.
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Affiliation(s)
- Sergio Lopez
- Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao, University of the Basque Country (UPV/EHU), Bilbao 48103, Spain
| | - Ortzi Akizu-Gardoki
- Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao, University of the Basque Country (UPV/EHU), Bilbao 48103, Spain
- Ekopol: Transition Pathways Research Group, University of the Basque Country (UPV/EHU), Leioa 48940, Spain
| | - Erlantz Lizundia
- Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao, University of the Basque Country (UPV/EHU), Bilbao 48103, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
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10
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Feng Y, Zhang X, Lin C, Wang Q, Zhang Y. Improving the electrochemical performance of LiNi 0.8Co 0.1Mn 0.1O 2 cathodes using a simple Ce 4+-doping and CeO 2-coating technique. NEW J CHEM 2021. [DOI: 10.1039/d1nj04997f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
LiNixCoyMn1−x−yO2 (x ≥ 0.6, NCM) has attracted much attention due to its high specific capacity and energy density.
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Affiliation(s)
- Yanhua Feng
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xiangxin Zhang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Changxin Lin
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qichao Wang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yining Zhang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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11
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Wen S, Li Z, Zou C, Zhong W, Wang C, Chen J, Zhong S. Improved performances of lithium-ion batteries by conductive polymer modified copper current collector. NEW J CHEM 2021. [DOI: 10.1039/d1nj01483h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Copper current collector coated with conductive polymer by electrochemical polymerization improves the capacity and long-life of LIBs.
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Affiliation(s)
- Shiwang Wen
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - Zhifeng Li
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - ChengJun Zou
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - Weixu Zhong
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - Chunxiang Wang
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - Jun Chen
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
| | - Shengwen Zhong
- School of Materials Science and Engineering
- Jiangxi Provincial Key Laboratory of Power Batteries and Materials
- Jiangxi University of Sciences and Technology
- Ganzhou 341000
- P. R. China
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12
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Ni-Rich Layered Oxide with Preferred Orientation (110) Plane as a Stable Cathode Material for High-Energy Lithium-Ion Batteries. NANOMATERIALS 2020; 10:nano10122495. [PMID: 33322585 PMCID: PMC7764293 DOI: 10.3390/nano10122495] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023]
Abstract
The cathode, a crucial constituent part of Li-ion batteries, determines the output voltage and integral energy density of batteries to a great extent. Among them, Ni-rich LiNixCoyMnzO2 (x + y + z = 1, x ≥ 0.6) layered transition metal oxides possess a higher capacity and lower cost as compared to LiCoO2, which have stimulated widespread interests. However, the wide application of Ni-rich cathodes is seriously hampered by their poor diffusion dynamics and severe voltage drops. To moderate these problems, a nanobrick Ni-rich layered LiNi0.6Co0.2Mn0.2O2 cathode with a preferred orientation (110) facet was designed and successfully synthesized via a modified co-precipitation route. The galvanostatic intermittent titration technique (GITT) and electrochemical impedance spectroscopy (EIS) analysis of LiNi0.6Co0.2Mn0.2O2 reveal its superior kinetic performance endowing outstanding rate performance and long-term cycle stability, especially the voltage drop being as small as 67.7 mV at a current density of 0.5 C for 200 cycles. Due to its unique architecture, dramatically shortened ion/electron diffusion distance, and more unimpeded Li-ion transmission pathways, the current nanostructured LiNi0.6Co0.2Mn0.2O2 cathode enhances the Li-ion diffusion dynamics and suppresses the voltage drop, thus resulting in superior electrochemical performance.
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