Multiple heterointerfaces boosted de-/sodiation kinetics towards superior Na storage and Na-Ion full battery

In this article, an effective strategy ( viz. , constructing multiple heterointerfaces) is proposed to develop superior electrode materials for sodium-ion battery (SIB), which is the most promising alternative to market-dominant lithium-ion battery for stationary energy storage. In the as-prepared h...

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2018, Vol.6 (15), p.6578-6586
Main Authors: Wang, Ying-Ying, Hou, Bao-Hua, Wang, Ya-Nan, Lü, Hong-Yan, Guo, Jin-Zhi, Ning, Qiu-Li, Zhang, Jing-Ping, Lü, Chang-Li, Wu, Xing-Long
Format: Article
Language:English
Subjects:
Batteries
Charge transport
Electrochemistry
Electrode materials
Electrodes
Energy storage
Interfaces
Kinetics
Lithium
Lithium-ion batteries
Reaction kinetics
Rechargeable batteries
Sodium
Sodium-ion batteries
Storage batteries
Surface charge
Tin dioxide
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Summary:In this article, an effective strategy ( viz. , constructing multiple heterointerfaces) is proposed to develop superior electrode materials for sodium-ion battery (SIB), which is the most promising alternative to market-dominant lithium-ion battery for stationary energy storage. In the as-prepared heterogeneous-SnO 2 /Se/graphene (h-SSG) composite, there exists multiple phase interfaces, including heterointerfaces between tetragonal and orthorhombic SnO 2 (t-/o-SnO 2 ) in the heterogeneous SnO 2 nanojunctions and two phase interfaces between t/o-SnO 2 and amorphous Se. These multiple phase interfaces promise the much improved Na storage properties of h-SSG when compared to four controls without such multiple heterointerfaces because the multiple built-in electric fields at the heterointerfaces can significantly boost the surface reaction kinetics and facilitate charge transport as demonstrated by kinetics analyses, theoretical calculations and contrastive electrochemical tests. Moreover, h-SSG also exhibits superior Na-ion full cell performance when coupled with a high-voltage Na 3 V 2 (PO 4 ) 2 O 2 F cathode. In view of the universality of the heterointerface-based enhancement effect on surface reaction and charge transport kinetics and the facile preparation procedures, the present strategy should be universal to develop other superior electrode materials for high-performance SIBs and other batteries for future energy storage applications.
ISSN:2050-7488
2050-7496
DOI:10.1039/C8TA01132J