dominant intercalation of H+ enables ultrahigh rate capability of oxygen deficient MoO3 for aqueous Al-ion batteries
作者:
Huang, WJ (Huang, Wenjie) [1] ; Zhang, K (Zhang, Kai) [2] ; Yuan, B (Yuan, Bin) [1] ; Yang, LC (Yang, Lichun) [1] ; Zhu, M (Zhu, Min) [1]
ENERGY STORAGE MATERIALS
卷50
页152-160
DOI10.1016/j.ensm.2022.05.016
出版时间SEP 2022
已索引2022-06-11
文献类型Article
摘要
Establishing conclusive proof of ion intercalation/deintercalation is challenging and critical to accurately assessing and optimizing the performance of aqueous aluminum-ion batteries (AAIBs). In this article, we develop oxygen-deficient alpha-MoO3 (denoted OD-MoO3-x) with an ultrahigh rate capability (97 mA h g(-1) at 50 A g(-1)) for AAIBs. The fast kinetics of charge storage are not only due to interlayer expansion but also related to the charge storage mechanism. Through DFT calculations, in situ XRD, in situ Raman spectroscopy, in situ pH monitoring, ex situ TEM and ToF-SIMS, we identify and quantify the contribution of H+ intercalation to the total energy storage. The mechanism of the ultrahigh rate capability of OD-MoO3-x is established as the predominant H+ intercalation. Our study may shed some light on the electrode development of high-performance multivalent-ion batteries.
关键词
作者关键词Molybdenum trioxideOxygen deficiencyH+ intercalationAqueous aluminum-ion batteries
Keywords PlusHYDROGEN MOLYBDENUM BRONZEELECTRODE MATERIALSELECTROCHEMICAL-BEHAVIORPERFORMANCE METRICSCATHODE MATERIALNANOTUBE ARRAYSSTORAGEALPHA-MOO3NANOBELTSVACANCIES
作者信息
通讯作者地址
Huang, Wenjie;
Yang, Lichun
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
2 Yinlong New Energy Co LTD, Zhuhai 519090, Peoples R China
电子邮件地址mslcyang@scut.edu.cn
类别/分类
研究方向ChemistryScience & Technology - Other TopicsMaterials Science