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Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery.
Small. 2018 03; 14(13):e1703850.S

Abstract

The development of manganese dioxide as the cathode for aqueous Zn-ion battery (ZIB) is limited by the rapid capacity fading and material dissolution. Here, a highly reversible aqueous ZIB using graphene scroll-coated α-MnO2 as the cathode is proposed. The graphene scroll is uniformly coated on the MnO2 nanowire with an average width of 5 nm, which increases the electrical conductivity of the MnO2 nanowire and relieves the dissolution of the cathode material during cycling. An energy density of 406.6 Wh kg-1 (382.2 mA h g-1) at 0.3 A g-1 can be reached, which is the highest specific energy value among all the cathode materials for aqueous Zn-ion battery so far, and good long-term cycling stability with 94% capacity retention after 3000 cycles at 3 A g-1 are achieved. Meanwhile, a two-step intercalation mechanism that Zn ions first insert into the layers and then the tunnels of MnO2 framework is proved by in situ X-ray diffraction, galvanostatic intermittent titration technique, and X-ray photoelectron spectroscopy characterizations. The graphene scroll-coated metallic oxide strategy can also bring intensive interests for other energy storage systems.

Authors+Show Affiliations

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China. Materials Science and Engineering Department, University of Washington, Seattle, WA, 98195-2120, USA.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China. Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

29392874

Citation

Wu, Buke, et al. "Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery." Small (Weinheim an Der Bergstrasse, Germany), vol. 14, no. 13, 2018, pp. e1703850.
Wu B, Zhang G, Yan M, et al. Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery. Small. 2018;14(13):e1703850.
Wu, B., Zhang, G., Yan, M., Xiong, T., He, P., He, L., Xu, X., & Mai, L. (2018). Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery. Small (Weinheim an Der Bergstrasse, Germany), 14(13), e1703850. https://doi.org/10.1002/smll.201703850
Wu B, et al. Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery. Small. 2018;14(13):e1703850. PubMed PMID: 29392874.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery. AU - Wu,Buke, AU - Zhang,Guobin, AU - Yan,Mengyu, AU - Xiong,Tengfei, AU - He,Pan, AU - He,Liang, AU - Xu,Xu, AU - Mai,Liqiang, Y1 - 2018/02/02/ PY - 2017/11/05/received PY - 2017/12/11/revised PY - 2018/2/3/pubmed PY - 2018/2/3/medline PY - 2018/2/3/entrez KW - Zn-ion batteries KW - cathode materials KW - graphene scroll-coated α-MnO2 KW - high performance SP - e1703850 EP - e1703850 JF - Small (Weinheim an der Bergstrasse, Germany) JO - Small VL - 14 IS - 13 N2 - The development of manganese dioxide as the cathode for aqueous Zn-ion battery (ZIB) is limited by the rapid capacity fading and material dissolution. Here, a highly reversible aqueous ZIB using graphene scroll-coated α-MnO2 as the cathode is proposed. The graphene scroll is uniformly coated on the MnO2 nanowire with an average width of 5 nm, which increases the electrical conductivity of the MnO2 nanowire and relieves the dissolution of the cathode material during cycling. An energy density of 406.6 Wh kg-1 (382.2 mA h g-1) at 0.3 A g-1 can be reached, which is the highest specific energy value among all the cathode materials for aqueous Zn-ion battery so far, and good long-term cycling stability with 94% capacity retention after 3000 cycles at 3 A g-1 are achieved. Meanwhile, a two-step intercalation mechanism that Zn ions first insert into the layers and then the tunnels of MnO2 framework is proved by in situ X-ray diffraction, galvanostatic intermittent titration technique, and X-ray photoelectron spectroscopy characterizations. The graphene scroll-coated metallic oxide strategy can also bring intensive interests for other energy storage systems. SN - 1613-6829 UR - https://www.unboundmedicine.com/medline/citation/29392874/Graphene_Scroll_Coated_α_MnO2_Nanowires_as_High_Performance_Cathode_Materials_for_Aqueous_Zn_Ion_Battery_ L2 - https://doi.org/10.1002/smll.201703850 DB - PRIME DP - Unbound Medicine ER -
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