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Expanded MoSe2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage.
ACS Appl Mater Interfaces. 2021 Mar 24; 13(11):13158-13169.AA

Abstract

The cost-efficient and plentiful Na and K resources motivate the research on ideal electrodes for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Here, MoSe2 nanosheets perpendicularly anchored on reduced graphene oxide (rGO) are studied as an electrode for SIBs and PIBs. Not only does the graphene network serves as a nucleation substrate for suppressing the agglomeration of MoSe2 nanosheets to eliminate the electrode fracture but also facilitates the electrochemical kinetics process and provides a buffer zone to tolerate the large strain. An expanded interplanar spacing of 7.9 Å is conducive to fast alkaline ion diffusion, and the formed chemical bondings (C-Mo and C-O-Mo) promote the structure integrity and the charge transfer kinetics. Consequently, MoSe2@5%rGO exhibits a reversible specific capacity of 458.3 mAh·g-1 at 100 mA·g-1, great cyclability with a retention of 383.6 mAh·g-1 over 50 cycles, and excellent rate capability (251.3 mAh·g-1 at 5 A·g-1) for SIBs. For PIBs, a high first specific capacity of 365.5 mAh·g-1 at 100 mA·g-1 with a low capacity fading of 51.5 mAh·g-1 upon 50 cycles and satisfactory rate property are acquired for MoSe2@10%rGO composite. Ex situ measurements validate that the discharge products are Na2Se for SIBs and K5Se3 for PIBs, and robust chemical bonds boost the structure stability for Na- and K-ion storage. The full batteries are successfully fabricated to verify the practical feasibility of MoSe2@5%rGO composite.

Authors+Show Affiliations

Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemistry & Material Science, Shanxi Normal University, Linfen 041004, PR China.Northwest Institute for Nonferrous Metal Research, Xi'an 710016, PR China.State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China.School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China.Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.Department of Materials and Engineering, University of Washington, Seattle, Washington 98195-2120, United States.Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33719396

Citation

Chong, Shaokun, et al. "Expanded MoSe2 Nanosheets Vertically Bonded On Reduced Graphene Oxide for Sodium and Potassium-Ion Storage." ACS Applied Materials & Interfaces, vol. 13, no. 11, 2021, pp. 13158-13169.
Chong S, Wei X, Wu Y, et al. Expanded MoSe2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage. ACS Appl Mater Interfaces. 2021;13(11):13158-13169.
Chong, S., Wei, X., Wu, Y., Sun, L., Shu, C., Lu, Q., Hu, Y., Cao, G., & Huang, W. (2021). Expanded MoSe2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage. ACS Applied Materials & Interfaces, 13(11), 13158-13169. https://doi.org/10.1021/acsami.0c22430
Chong S, et al. Expanded MoSe2 Nanosheets Vertically Bonded On Reduced Graphene Oxide for Sodium and Potassium-Ion Storage. ACS Appl Mater Interfaces. 2021 Mar 24;13(11):13158-13169. PubMed PMID: 33719396.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Expanded MoSe2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage. AU - Chong,Shaokun, AU - Wei,Xuedong, AU - Wu,Yifang, AU - Sun,Lan, AU - Shu,Chengyong, AU - Lu,Qianbo, AU - Hu,Yingzhen, AU - Cao,Guozhong, AU - Huang,Wei, Y1 - 2021/03/14/ PY - 2021/3/16/pubmed PY - 2021/3/16/medline PY - 2021/3/15/entrez KW - anode material KW - chemical bond KW - molybdenum selenide KW - potassium-ion battery KW - sodium-ion battery SP - 13158 EP - 13169 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 13 IS - 11 N2 - The cost-efficient and plentiful Na and K resources motivate the research on ideal electrodes for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Here, MoSe2 nanosheets perpendicularly anchored on reduced graphene oxide (rGO) are studied as an electrode for SIBs and PIBs. Not only does the graphene network serves as a nucleation substrate for suppressing the agglomeration of MoSe2 nanosheets to eliminate the electrode fracture but also facilitates the electrochemical kinetics process and provides a buffer zone to tolerate the large strain. An expanded interplanar spacing of 7.9 Å is conducive to fast alkaline ion diffusion, and the formed chemical bondings (C-Mo and C-O-Mo) promote the structure integrity and the charge transfer kinetics. Consequently, MoSe2@5%rGO exhibits a reversible specific capacity of 458.3 mAh·g-1 at 100 mA·g-1, great cyclability with a retention of 383.6 mAh·g-1 over 50 cycles, and excellent rate capability (251.3 mAh·g-1 at 5 A·g-1) for SIBs. For PIBs, a high first specific capacity of 365.5 mAh·g-1 at 100 mA·g-1 with a low capacity fading of 51.5 mAh·g-1 upon 50 cycles and satisfactory rate property are acquired for MoSe2@10%rGO composite. Ex situ measurements validate that the discharge products are Na2Se for SIBs and K5Se3 for PIBs, and robust chemical bonds boost the structure stability for Na- and K-ion storage. The full batteries are successfully fabricated to verify the practical feasibility of MoSe2@5%rGO composite. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/33719396/Expanded_MoSe2_Nanosheets_Vertically_Bonded_on_Reduced_Graphene_Oxide_for_Sodium_and_Potassium_Ion_Storage_ L2 - https://doi.org/10.1021/acsami.0c22430 DB - PRIME DP - Unbound Medicine ER -
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