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Insight into the Origin of Capacity Fluctuation of Na2Ti6O13 Anode in Sodium Ion Batteries
Wu, Chunjin1; Wu, Zhen-Guo1; Zhang, Xiaobing2; Rajagopalan, Ranjusha3; Zhong, Benhe1; Xiang, Wei4; Chen, Mingzhe3; Li, Hongtai5; Chen, Tingru1; Wang, Enhui1,3; Yang, Zuguang1; Guo, Xiaodong1
2017-12-20
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
卷号9期号:50页码:43596-43602
摘要

The capacity fluctuation phenomenon during cycling, which is closely related with solid electrolyte interphase and plays a key role for the design for advanced electrode, could be frequently observed in the titanium-based anode. However, the underlying reason for capacity fluctuation still remains unclear with rare related reports. Here, the origin of capacity fluctuation is verified with a long-life Na2Ti6O13 anode. The reaction mechanism, structural evolution and reaction kinetics during the reported sodiation/desodiation processes were carefully investigated. The gradually enhanced diffusion controlled contribution resulted in the capacity increasing. And the capacity decay could be ascribed to the irreversible reaction of metallic titanium formation and the increasing potential polarization. It is worth noting that sodium ions seem to partially reduce NTO to metallic state, which is irreversible. The present study can provide more information for the design of advanced Na2Ti6O13 anode.

关键词Sodium Ion Battery Titanium-based Anode Capacity Fluctuation Pseudocapacitance Metallic Titanium
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/acsami.7b11507
收录类别SCI
语种英语
关键词[WOS]Solid-electrolyte Interphase ; Lithium Insertion ; Titanium-oxide ; Hard Carbon ; Performance ; Na ; Storage ; Nanorods ; Spinel ; Titanate
WOS研究方向Science & Technology - Other Topics ; Materials Science
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
项目资助者National Natural Science Foundation of China(21373008) ; National Key Research and Development of China(2016YFB0100202) ; China Postdoctoral Science Foundation(2014M562322) ; AutoCRC Project(1-111)
WOS记录号WOS:000418783700021
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23478
专题研究所(批量导入)
通讯作者Wu, Zhen-Guo; Guo, Xiaodong
作者单位1.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China
2.Petrochina Southwest Oil & Gasfield Co, Chongqing Nat Gas Purificat Plant, Chongqing 401220, Peoples R China
3.Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia
4.Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Sichuan, Peoples R China
5.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Wu, Chunjin,Wu, Zhen-Guo,Zhang, Xiaobing,et al. Insight into the Origin of Capacity Fluctuation of Na2Ti6O13 Anode in Sodium Ion Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(50):43596-43602.
APA Wu, Chunjin.,Wu, Zhen-Guo.,Zhang, Xiaobing.,Rajagopalan, Ranjusha.,Zhong, Benhe.,...&Guo, Xiaodong.(2017).Insight into the Origin of Capacity Fluctuation of Na2Ti6O13 Anode in Sodium Ion Batteries.ACS APPLIED MATERIALS & INTERFACES,9(50),43596-43602.
MLA Wu, Chunjin,et al."Insight into the Origin of Capacity Fluctuation of Na2Ti6O13 Anode in Sodium Ion Batteries".ACS APPLIED MATERIALS & INTERFACES 9.50(2017):43596-43602.
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