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Chemistry evolution of LiNi1/3Co1/3Mn1/3O2-NaHSO4·H2O system during roasting | |
Zhang, Xiaodong1; Wang, Dahui1; Chen, Huaijing2; Yang, Lixin1; Yu, Yueshan1; Xu, Li1 | |
2019-10-15 | |
发表期刊 | Solid State Ionics |
ISSN | 01672738 |
卷号 | 339 |
摘要 | LiNi1/3Co1/3Mn1/3O2 is one of the key materials used in power lithium-ion batteries. At present, much attention is put on the study of chemical properties of LiNi1/3Co1/3Mn1/3O2 in acidic aqueous solutions. Different from the acidic aqueous solutions reaction system, this paper presents a study on the chemistry evolution of LiNi1/3Co1/3Mn1/3O2-NaHSO4·H2O system with stoichiometric mass ratio of 1:4.30 during roasting process, which is studied by thermogravimetry-differential scanning calorimetry, in-situ X-ray diffraction, X-ray diffraction and X-ray photoelectron spectroscopy. The experimental results show that the quondam phase composition of the mixture is disappeared and transformed to its corresponding sulfates (LiNaSO4 and Na2Ni(SO4)2 etc.). In the temperature range under 425 °C, the original structure of LiNi1/3Co1/3Mn1/3O2 is completely destroyed due to the lack of Li in the α-NaFeO2 layered structure, and the bimetallic sulfates were transformed and existed in the form of Na2M(SO4)2 (M = Ni, Co, Mn) from 425 °C to 550 °C. The occurrence of Li, Ni, Co, and Mn elements evolves as follows: LiNi1/3Co1/3Mn1/3O2 → Li2SO4 → LiNaSO4, LiNi1/3Co1/3Mn1/3O2 → NiSO4 → Na6Ni(SO4)4 → Na2Ni(SO4)2, LiNi1/3Co1/3Mn1/3O2 → CoSO4 → Na6Co(SO4)4 → Na2Co(SO4)2, LiNi1/3Co1/3Mn1/3O2 → MnO2 → Mn2O3 → MnSO4 → Na2Mn(SO4)2, and the change of valence state of Co and Mn is +3 → +2 and + 4 → +3 → +2, respectively. The chemistry reaction mechanism of this roasting process might be reactions as follows: 12LiNi1/3Co1/3Mn1/3O2 + 36NaHSO4·H2O → 18Na2SO4 + 6Li2SO4 + 4NiSO4 + 4CoSO4 + 4MnSO4 + 54H2O + 3O2, Li2SO4 + Na2SO4 → 2LiNaSO4, MeSO4 + 3Na2SO4 → Na6Me(SO4)4 (Me = Ni, Co), Na6Me(SO4)4 → Na2Me(SO4)2 + 2Na2SO4, MnSO4 + Na2SO4 = Na2Mn(SO4)2. © 2019 Elsevier B.V. |
关键词 | Calcination Differential scanning calorimetry Lithium-ion batteries Manganese Manganese oxide Nickel sulfates Sodium sulfate Sulfur compounds Thermogravimetric analysis X ray diffraction X ray photoelectron spectroscopy Acidic aqueous solution Element occurrence In-situ X-ray diffraction In-situ XRD LiNi1/3Co1/3Mn1/3O2 Original structures Power lithium ion batteries Roasting |
DOI | 10.1016/j.ssi.2019.05.018 |
收录类别 | EI ; SCIE |
语种 | 英语 |
WOS研究方向 | Chemistry ; Physics |
WOS类目 | Chemistry, Physical ; Physics, Condensed Matter |
WOS记录号 | WOS:000493213000012 |
出版者 | Elsevier B.V., Netherlands |
EI入藏号 | 20192607092589 |
EI主题词 | Lithium compounds |
EI分类号 | 543.2 Manganese and Alloys - 801 Chemistry - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 944.6 Temperature Measurements |
来源库 | Compendex |
分类代码 | 543.2 Manganese and Alloys - 801 Chemistry - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 944.6 Temperature Measurements |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/113846 |
专题 | 材料科学与工程学院 理学院 |
通讯作者 | Wang, Dahui |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Coll Sci, Lanzhou 730050, Gansu, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Zhang, Xiaodong,Wang, Dahui,Chen, Huaijing,et al. Chemistry evolution of LiNi1/3Co1/3Mn1/3O2-NaHSO4·H2O system during roasting[J]. Solid State Ionics,2019,339. |
APA | Zhang, Xiaodong,Wang, Dahui,Chen, Huaijing,Yang, Lixin,Yu, Yueshan,&Xu, Li.(2019).Chemistry evolution of LiNi1/3Co1/3Mn1/3O2-NaHSO4·H2O system during roasting.Solid State Ionics,339. |
MLA | Zhang, Xiaodong,et al."Chemistry evolution of LiNi1/3Co1/3Mn1/3O2-NaHSO4·H2O system during roasting".Solid State Ionics 339(2019). |
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