1
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Qiu J, Zhang L, Dai D, Xia G, Yao J. Cellulose-Derived Carbon Dot-Guided Growth of ZnIn 2 S 4 Nanosheets for Photocatalytic Oxidation of 5-Hydroxymethylfurfural into 2,5-Diformylfuran. CHEMSUSCHEM 2022; 15:e202200399. [PMID: 35293693 DOI: 10.1002/cssc.202200399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Cellulose-derived carbon (CC) dot-directed growth of ZnIn2 S4 was achieved through hydrothermal treatment of carboxylated cellulose followed by in situ growth of ZnIn2 S4 nanosheets. The carbon dots inherited from carboxylated cellulose equip plenty of surface carboxyl groups, which induce the ionic interaction with Zn2+ and In3+ and the guided growth of ZnIn2 S4 . As a result, the nanosheets of ZnIn2 S4 are evenly and intimately grown on the small carbon dots, providing high-speed channels for charges transfer. In conjunction with the reinforced visible-light capture and good conductivity of carbon dots, the resultant CC/ZnIn2 S4 shows an outstanding photocatalytic activity. As a proof-of-concept, visible-light-driven 5-hydroxymethylfurfural oxidation into 2,5-diformylfuran was conducted. The evolution of 2,5-diformylfuran over the optimal CC/ZnIn2 S4 sample can reach ∼2980 μmol g-1 , about 3.4 times that of pristine ZnIn2 S4 . Additionally, the apparent quantum yield could attain 3.4 % at a wavelength of 400 nm.
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Affiliation(s)
- Jianhao Qiu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Lu Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Dingliang Dai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Guanglu Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Jianfeng Yao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
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2
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Hierarchically MOx@Nb-zeolites for the Selective Oxidation of HMF to HMFCA. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Gu Q, Wang M, Liu Y, Deng Y, Wang L, Gao J. Electrolyte Additives for Improving the High-Temperature Storage Performance of Li-Ion Battery NCM523∥Graphite with Overcharge Protection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4759-4766. [PMID: 35015503 DOI: 10.1021/acsami.1c22304] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The overcharge safety performance of lithium-ion batteries has been the major bottleneck in the widespread deployment of this promising technology. Pushing the limitations further may jeopardize cell safety when it is performed at high-temperature storage. On the basis of the lacking systematic research on overcharge protection electrolyte additives with high-temperature storage capacity, we explore the promotion effect of overcharge additives on electrolyte decomposition at 60 °C. Specifically, the addition of tris(trimethylsily) phosphite (TMSP) and lithium difluoro(oxalato)borate (LiDFOB) in the electrolyte can not only form the robust cathode electrolyte interface/solid electrolyte interphase (CEI/SEI) but also improve the thermal stability of the electrolyte. Therefore, we promote the electrolyte system to realize the 18,650 LIB storage at 60 °C for 50 days by optimizing the formula in the electrolyte containing biphenyl (BP) and cyclohexylbenzene (CHB) overcharge protection additives, and the capacity retention rate can reach more than 90% with overcharge safety. Further, the optimized electrolyte system has also been implemented to commercial 18,650 LIBs and demonstrates the widening of the route to the widespread application of the electrolyte under extreme conditions.
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Affiliation(s)
- Qin Gu
- New Energy Materials Laboratory, Sichuan Changhong Electric Co., Ltd., Chengdu 610041, China
| | - Ming Wang
- New Energy Materials Laboratory, Sichuan Changhong Electric Co., Ltd., Chengdu 610041, China
| | - Yang Liu
- New Energy Materials Laboratory, Sichuan Changhong Electric Co., Ltd., Chengdu 610041, China
| | - Yunlong Deng
- New Energy Materials Laboratory, Sichuan Changhong Electric Co., Ltd., Chengdu 610041, China
| | - Liping Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jian Gao
- New Energy Materials Laboratory, Sichuan Changhong Electric Co., Ltd., Chengdu 610041, China
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
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4
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Chen A, Li T, Zhang Q, Zhu H. Selective aerobic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid over nanojunctions of cobalt–ceria binary oxide in water. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00110a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-precious cobalt–ceria binary oxide nanojunctions with rich interfaces were designed to efficiently catalyze 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA).
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Affiliation(s)
- Aicheng Chen
- Engineering Research Center of Industrial Biocatalysis, Fujian Province University, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, P.R.China
| | - Tingting Li
- Engineering Research Center of Industrial Biocatalysis, Fujian Province University, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, P.R.China
| | - Qian Zhang
- Engineering Research Center of Industrial Biocatalysis, Fujian Province University, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, P.R.China
| | - Hu Zhu
- Engineering Research Center of Industrial Biocatalysis, Fujian Province University, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, P.R.China
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, P.R. China
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5
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Chen S, Wang Z, Chen L, Liu N, Li N, Lu Y, Cao D, Fu N, Li Q, Su Y, Wu F. Sublimated Se‐Induced Formation of Dual‐Conductive Surface Layers for High‐Performance Ni‐Rich Layered Cathodes. ChemElectroChem 2021. [DOI: 10.1002/celc.202100693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shi Chen
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
| | - Zirun Wang
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Lai Chen
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Na Liu
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Ning Li
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Yun Lu
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Duanyun Cao
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Nuoting Fu
- School of Automation Beijing Institute of Technology Beijing 100081 China
| | - Qing Li
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Yuefeng Su
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
| | - Feng Wu
- School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China
- Chongqing Innovation Center Beijing Institute of Technology Chongqing 401120 China
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6
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Su Y, Chen G, Chen L, Shi Q, Lv Z, Lu Y, Bao L, Li N, Chen S, Wu F. Roles of Fast-Ion Conductor LiTaO 3 Modifying Ni-rich Cathode Material for Li-Ion Batteries. CHEMSUSCHEM 2021; 14:1955-1961. [PMID: 33710782 DOI: 10.1002/cssc.202100156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Limited cycling stability hampers the commercial application of Ni-rich materials, which are regarded as one of the most promising cathode materials for Li-ion batteries. Ni-rich LiNi0.9 Co0.06 Mn0.04 O2 layered cathode was modified with different amounts of LiTaO3 , and the influences of fast-ion conductor material on cathode materials were explored. Detailed analysis of the materials revealed the formation of a uniformly epitaxial LiTaO3 coating layer and a little Ta5+ doping into the lattice structure of Ni-rich materials. The coating-layer thickness increased with the amount of LiTaO3 added, protecting the electrode from erosion by electrolyte and suppressing undesired parasitic reactions on the cathode-electrolyte interface. Meanwhile, the doped Ta5+ increased the interplanar spacing of materials, accelerating Li+ transfer. Using the positive synergistic effects of LiTaO3 -coating and Ta5+ -doping, improved capacity retentions of the modified materials, especially for 0.25 and 0.5 wt%-coated Ni-rich materials, were obtained after long-term cycling, showing the potential applications of LiTaO3 modification. Further, the relations between one excessively thick coating layer and transfer of Li+ /electron between the cathode and electrolyte was established, proving that very thick coating layers, even layers containing Li ions, have adverse effects on electrochemical performances. This finding may help to understand the roles of the coating layer better.
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Affiliation(s)
- Yuefeng Su
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Gang Chen
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Lai Chen
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Qi Shi
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Zhao Lv
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Yun Lu
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Liying Bao
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Ning Li
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
| | - Shi Chen
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
| | - Feng Wu
- School of Materials Science & Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P.R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, P.R. China
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7
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Vásquez FA, Rosero-Navarro NC, Miura A, Jalem R, Goto Y, Nagao M, Tateyama Y, Tadanaga K, Calderón JA. Kinetic Control of the Li 0.9Mn 1.6Ni 0.4O 4 Spinel Structure with Enhanced Electrochemical Performance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:14056-14067. [PMID: 33723987 DOI: 10.1021/acsami.0c17886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The development of more sustainable societies has become an urgent goal worldwide. Electrical batteries are currently seen as one of the most important energy storage technologies for the development of decarbonized societies. However, many lithium-ion battery manufacturers currently utilize cobalt, a toxic and hazardous mineral, in their batteries. Lithium-deficient manganese nickel oxide spinels are considered promising candidates owing to their high potential and environmental friendliness. Their electrochemical performance highly depends on their average and local structures, such as phase purities, lattice parameters, and cation sites. Thus, a synthesis protocol should be designed to control these structural parameters to improve their electrochemical performance. In this study, we controlled the average and local structures of Li0.9Mn1.6Ni0.4O4 spinels obtained by co-precipitation by optimizing their cooling rates. High-resolution techniques, including transmission electron microscopy, synchrotron X-ray diffraction, and Auger-composition analysis combined with density functional theory calculations, X-ray absorption spectroscopy, and electrochemical analysis, were used to understand the average and local structural variations and their effects on the electrochemical properties. As a result, the control of oxygen diffusion at different cooling rates can promote the rearrangement of the structure, resulting in a cation-disordered spinel with minimal variations in lattice parameters and composition. Excellent electrochemical properties were noted in the cation-disordered spinel with high crystallinity and a slightly oxygen-rich surface produced via optimized cooling rates.
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Affiliation(s)
- F A Vásquez
- CIDEMAT, Universidad de Antioquia, Street 70# 52-21, Medellín 050010, Colombia
| | - N C Rosero-Navarro
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - A Miura
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - R Jalem
- Center for Green Research on Energy and Environmental Materials (GREEN), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
- Center for Materials Research By Information Integration (CMÎ2), Research and Services Division of Materials Data and Integrated System (MaDIS), NIMS, Tsukuba, Ibaraki 305-0044, Japan
- PRESTO, Japan Science and Technology Agency (JST), Saitama 333-0012, Japan
- Elements Strategy Initiative for Catalysts & Batteries, Kyoto University, Kyoto, Kyoto 615-8g245, Japan
| | - Y Goto
- Department of Physics, Tokyo Metropolitan University, Hachioji 192-0397, Japan
| | - M Nagao
- Center for Crystal Science and Technology, University of Yamanashi, Kofu 400-0021, Japan
| | - Y Tateyama
- Center for Green Research on Energy and Environmental Materials (GREEN), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
- Center for Materials Research By Information Integration (CMÎ2), Research and Services Division of Materials Data and Integrated System (MaDIS), NIMS, Tsukuba, Ibaraki 305-0044, Japan
- Elements Strategy Initiative for Catalysts & Batteries, Kyoto University, Kyoto, Kyoto 615-8g245, Japan
| | - K Tadanaga
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - J A Calderón
- CIDEMAT, Universidad de Antioquia, Street 70# 52-21, Medellín 050010, Colombia
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8
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Ge X, Yu J, Zhu L, Deng Z, Zhang J, Chen CL, Huang WH, Chen BH, Chang CK, Chen H, Zhao R. Irreversible Transition from GaO 6 Octahedra to GaO 4 Tetrahedra for Improved Electrochemical Stability in Ga-Doped Li(Ni 0.9Co 0.1)O 2. Inorg Chem 2021; 60:3015-3024. [PMID: 33577307 DOI: 10.1021/acs.inorgchem.0c03211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Trace doping is an efficient way to improve the stability of nickel-rich layered cathodes for lithium-ion batteries, but the structural origin of such improvement, rather than a simple replacement, has been rarely explored. Herein, Ga dopants have been introduced into a nickel-rich host, LiNi0.9Co0.1O2, by a combination of coprecipitation and the solid-state sintering method. Structural analyses based on high-resolution synchrotron powder diffraction data and X-ray absorption spectra suggest that Ga preferentially sits in the NiO6 slabs, resulting in reduced Ni/Li cationic mixing and depressed lattice vibration. Due to the smaller dissociation energy of Ga-O bonds, some Ga3+ cations migrate first toward Li layers upon delithiation and form the GaO4 tetrahedral symmetry irreversibly during the electrochemical process, which acts as a pillar in the subsequent electrochemical processes. As a result, the doped material exhibits both improved cycling performance and rate capability under a high operating voltage (4.5 V) due to the stabilized structure in the lithiation/delithiation process. This study illustrates how a dopant enhances the electrochemical stability in views of both pristine and charged structure and suggests that a positive effect is expected from the dopant favoring the tetrahedral symmetry (e.g., Al).
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Affiliation(s)
- Xinru Ge
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
| | - Jing Yu
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
| | - Liheng Zhu
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
| | - Zeneng Deng
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
| | - Jiliang Zhang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Chi-Liang Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, Republic of China
| | - Wei-Hsiang Huang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Taipei 10607, Taiwan, Republic of China
| | - Bo Hao Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, Republic of China
| | - Chung-Kai Chang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, Republic of China
| | - Hongyu Chen
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
| | - Ruirui Zhao
- School of Chemistry, Engineering Research Center of MTEES (Ministryof Education), South China Normal University, Guangzhou 510006, People's Republic of China
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9
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Hu D, Zhang Q, Tian J, Chen L, Li N, Su Y, Bao L, Lu Y, Cao D, Yan K, Chen S, Wu F. High-Temperature Storage Deterioration Mechanism of Cylindrical 21700-Type Batteries Using Ni-Rich Cathodes under Different SOCs. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6286-6297. [PMID: 33504149 DOI: 10.1021/acsami.0c20835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The safety and energy density of lithium-ion batteries (LIBs) are important concerns. The use of high-capacity cathode materials, such as Ni-rich cathodes, can greatly improve the energy density of LIBs, but it also brings some safety hazards. Cylindrical 21700-type batteries using Ni-rich cathodes were employed here to investigate their high-temperature storage deterioration mechanism under different states of charge (SOCs). Electrolyte decomposition was identified as the main problem. It can be worsened by elevated storage temperatures and battery SOCs, with the latter having a more significant influence. Specifically, the decomposition of the LiPF6 solute and the carbonate solvent will induce hydrofluoric acid (HF) formation and solid-electrolyte interphase (SEI) film regeneration, respectively. HF erosion will aggravate the dissolution of transition metal ions and structural degradation of cathode materials, while the destruction/regeneration of SEI films will consume active lithium and hinder Li+ diffusion at the anode side. Besides, the self-discharge behavior will also enlarge the graphite layer spacing, thus decreasing the graphitization degree of graphite anodes and causing anode failure. These findings will aid in the development of strategies for improving the safety of LIBs with high energy density.
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Affiliation(s)
- Daozhong Hu
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Department of Testing Technology, China North Vehicle Research Institute, Beijing 100072, China
| | - Qiyu Zhang
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Jun Tian
- Department of Testing Technology, China North Vehicle Research Institute, Beijing 100072, China
| | - Lai Chen
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Ning Li
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Yuefeng Su
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Liying Bao
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Yun Lu
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Duanyun Cao
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Kang Yan
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
| | - Shi Chen
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Feng Wu
- School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, P. R. China
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10
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Su Y, Chen G, Chen L, Li L, Li C, Ding R, Liu J, Lv Z, Lu Y, Bao L, Tan G, Chen S, Wu F. Clean the Ni-Rich Cathode Material Surface With Boric Acid to Improve Its Storage Performance. Front Chem 2020; 8:573. [PMID: 32793553 PMCID: PMC7393980 DOI: 10.3389/fchem.2020.00573] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/03/2020] [Indexed: 11/13/2022] Open
Abstract
The existence of residual lithium compounds (RLCs) on the surface of layered Ni-rich materials will deteriorate the electrochemical properties and cause safety problem. This work presents an effective surface washing method to remove the RLCs from LiNi0.90Co0.06Mn0.04O2 material surface, via ethyl alcohol solution that contains low concentration of boric acid. It is a low-cost process because the filter liquor can be recycled. The optimal parameters including washing time, boric acid concentration, and solid-liquid ratio were systematically studied. It has been determined by powder pH and Fourier transform infrared spectra results that the amount of RLCs was reduced effectively, and the storage performance was significantly enhanced for the washed samples. The 150th capacity retentions after storing had increased from 68.39% of pristine material to 85.46-94.84% of the washed materials. The performance enhancements should be ascribed to the surface washing process, which removed not only the RLCs, but also the loose primary particles effectively.
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Affiliation(s)
- Yuefeng Su
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
| | - Gang Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
| | - Lai Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
| | - Linwei Li
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Cong Li
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Rui Ding
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Jiahui Liu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Zhao Lv
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Yun Lu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
| | - Liying Bao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Guoqiang Tan
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
| | - Shi Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Feng Wu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,Beijing Institute of Technology Chongqing Innovation Center, Chongqing, China
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