Probing microstructure and phase evolution of α-MoO3 nanobelts for sodium-ion batteries by in situ transmission electron microscopy
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- 作者：Weiwei Xiaa ; 1Author Vitae ; Feng Xua ; 1 ; fxu@seu.edu.cn" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Chongyang ZhuaAuthor Vitae ; Huolin L. Xinb ; hxin@bnl.gov" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Qingyu XucAuthor Vitae ; Pingping SuncAuthor Vitae ; Litao Suna ; d ; slt@seu.edu.cn" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae
- 关键词：Sodium-ion batteries ; In situ TEM ; MoO3 ; Sodiation/desodiation ; Multi-step phase transformation
- 刊名：Nano Energy
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：27
- 期：Complete
- 页码：447-456
- 全文大小：4834 K
文摘
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Upon the first sodiation, the sodiation displacement of the α-MoO3 Nanobelts exhibits axial stepwise propagation with time.
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The α-MoO3 nanobelts are found to undergo a unique irreversible multi-step phase transformation in first cycle.
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The phase transformation during first sodiation process is c-MoO3→a-NaxMoO3→c-NaMoO2→c-Mo.
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The phase transformation during first desodiation process is c-Mo→c-NaMoO2→a-Na2MoO3.
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Reversible phase transformation during subsequent cycles is between c-Mo and a-Na2MoO3.