标题:Sandwich Structures Constructed by ZnSe⊂N-C@MoSe2 Located in Graphene for Efficient Sodium Storage
作者:Shi N.; Chu Y.; Xi B.; Huang M.; Chen W.; Duan B.; Zhang C.; Feng J.;等
作者机构:[Shi, N] Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, and State Key Laborat 更多
通讯作者:Xi, B(baojuanxi@sdu.edu.cn)
通讯作者地址:[Xi, B] Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, and State Key Laborato 更多
来源:Advanced Energy Materials
出版年:2020
DOI:10.1002/aenm.202002298
关键词:graphene; MoSe 2; sandwich hierarchical structures; sodium-ion batteries; ZnSe
摘要:Hybrid hierarchical micro/nanostructures possess great potential in engineering of advanced electrode materials for sodium-ion batteries (SIBs). Herein, a sandwich hierarchical architecture composed of ZnSe nanoparticles fastened in N-doped carbon polyhedra anchoring onto graphene with the modification of MoSe2 nanosheets (ZnSe⊂N-C@MoSe2/rGO) is synthesized by a self-template and subsequent selenization strategy. Due to the distinctive architectural and multicompositional features, these hybrids deliver a high reversible capacity of 319.4 mAh g−1 at 1 A g−1 for 1800 cycles, 206.5 mA h g−1 at 6 A g−1 for 2800 cycles, and 177.7 mAh g−1 at 10 A g−1 for 5000 cycles, as well as a better rate capability up to 10 A g−1 with a reversible capacity of 224.4 mAh g−1 as an anode material for SIBs. By comparing the capacity contribution, electrochemical impedance spectra and DNa+ of different materials, the advantages of ZnSe⊂N-C@MoSe2/rGO are confirmed. The sodium storage mechanism of hybrids is further revealed by in situ X-ray diffraction patterns and high-resolution transmission electron microscopy results. The improved sodium storage properties of hybrids manifest the significance of elaborate construction of novel multicomponent hierarchical architectures with higher complexity. © 2020 Wiley-VCH GmbH
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091148398&doi=10.1002%2faenm.202002298&partnerID=40&md5=6daebafe650b10675f87d6976bb59970
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