In situ TEM investigation of hexagonal WO3 irreversible transformation to Li2WO4
文献类型：期刊论文
| 作者 | Wang, Zhenhua; Chen, Guoxin; Zhang, Hongliang; Liang, Lingyan; Gao, Junhua; Cao, Hongtao |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2021 |
| 卷号 | 203 |
| 关键词 | TUNGSTEN TRIOXIDE DEGRADATION FILMS |
| 英文摘要 | Lithium-ion migration at the WO3/electrolyte interface is governed by the phase transformation mechanism by which metastable states are replaced from one phase to another. Herein, an in situ single nanowire-based cell is constructed to investigate the dynamic phase transformation and morphology evolution of h-WO3 nanowire in real-time during its deep lithiation. One of the most significant features of h-WO3 lithiation is the irreversible transformation from h-WO3 to Li2WO4. There are a large number of deep ion-trapping sites composed of 4 O atoms in Li2WO4 crystal structure, that is, inserted lithium ions are irreversibly bound in these traps and nearly cannot be deintercalated. A mechanism on irreversible WO3-to-Li2WO4 transformation in deep lithiation reaction is demonstrated. With the aid of in situ transmission electron microscopy, we controllably triggered lithium-ion migration at the WO3/electrolyte interface and directly visualized the nanoscale lithium-ion migration as a stop motion movie. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21443]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Zhang, HL 2.Cao, HT (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 3.Cao, HT (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Lab Adv Nano Mat & Devices, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Zhenhua,Chen, Guoxin,Zhang, Hongliang,et al. In situ TEM investigation of hexagonal WO3 irreversible transformation to Li2WO4[J]. SCRIPTA MATERIALIA,2021,203. |
| APA | Wang, Zhenhua,Chen, Guoxin,Zhang, Hongliang,Liang, Lingyan,Gao, Junhua,&Cao, Hongtao.(2021).In situ TEM investigation of hexagonal WO3 irreversible transformation to Li2WO4.SCRIPTA MATERIALIA,203. |
| MLA | Wang, Zhenhua,et al."In situ TEM investigation of hexagonal WO3 irreversible transformation to Li2WO4".SCRIPTA MATERIALIA 203(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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