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Magnesium Hydride Nanoparticles Self-Assembled on Graphene as Anode Material for High-Performance Lithium-Ion Batteries.
ACS Nano 2018; 12(4):3816-3824AN

Abstract

MgH2 nanoparticles (NPs) uniformly anchored on graphene (GR) are fabricated based on a bottom-up self-assembly strategy as anode materials for lithium-ion batteries (LIBs). Monodisperse MgH2 NPs with an average particle size of ∼13.8 nm are self-assembled on the flexible GR, forming interleaved MgH2/GR (GMH) composite architectures. Such nanoarchitecture could effectively constrain the aggregation of active materials, buffer the strain of volume changes, and facilitate the electron/lithium ion transfer of the whole electrode, leading to a significant enhancement of the lithium storage capacity of the GMH composite. Furthermore, the performances of GMH composite as anode materials for LIBs are enabled largely through robust interfacial interactions with poly(methyl methacrylate) (PMMA) binder, which plays multifunctional roles in forming a favorable solid-electrolyte interphase (SEI) film, alleviating the volume expansion and detachment of active materials, and maintaining the structural integrity of the whole electrode. As a result, these synergistic effects endow the obtained GMH composite with a significantly enhanced reversible capacity and cyclability as well as a good rate capability. The GMH composite with 50 wt % MgH2 delivers a high reversible capacity of 946 mA h g-1 at 100 mA g -1 after 100 cycles and a capacity of 395 mAh g-1 at a high current density of 2000 mA g-1 after 1000 cycles.

Authors+Show Affiliations

Department of Materials Science , Fudan University , Shanghai 200433 , China.Department of Materials Science , Fudan University , Shanghai 200433 , China. Institute for Superconducting and Electronic Materials , University of Wollongong , North Wollongong , New South Wales 2522 , Australia.Department of Materials Science , Fudan University , Shanghai 200433 , China. Shanghai Innovation Institute for Materials , Shanghai 200444 , China.Department of Materials Science , Fudan University , Shanghai 200433 , China.Department of Materials Science , Fudan University , Shanghai 200433 , China. Shanghai Innovation Institute for Materials , Shanghai 200444 , China.

Pub Type(s)

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

Language

eng

PubMed ID

29608285

Citation

Zhang, Baoping, et al. "Magnesium Hydride Nanoparticles Self-Assembled On Graphene as Anode Material for High-Performance Lithium-Ion Batteries." ACS Nano, vol. 12, no. 4, 2018, pp. 3816-3824.
Zhang B, Xia G, Sun D, et al. Magnesium Hydride Nanoparticles Self-Assembled on Graphene as Anode Material for High-Performance Lithium-Ion Batteries. ACS Nano. 2018;12(4):3816-3824.
Zhang, B., Xia, G., Sun, D., Fang, F., & Yu, X. (2018). Magnesium Hydride Nanoparticles Self-Assembled on Graphene as Anode Material for High-Performance Lithium-Ion Batteries. ACS Nano, 12(4), pp. 3816-3824. doi:10.1021/acsnano.8b01033.
Zhang B, et al. Magnesium Hydride Nanoparticles Self-Assembled On Graphene as Anode Material for High-Performance Lithium-Ion Batteries. ACS Nano. 2018 04 24;12(4):3816-3824. PubMed PMID: 29608285.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Magnesium Hydride Nanoparticles Self-Assembled on Graphene as Anode Material for High-Performance Lithium-Ion Batteries. AU - Zhang,Baoping, AU - Xia,Guanglin, AU - Sun,Dalin, AU - Fang,Fang, AU - Yu,Xuebin, Y1 - 2018/04/06/ PY - 2018/4/3/pubmed PY - 2018/4/3/medline PY - 2018/4/3/entrez KW - graphene KW - lithium-ion batteries KW - magnesium hydride KW - nanoarchitecture KW - self-assembly SP - 3816 EP - 3824 JF - ACS nano JO - ACS Nano VL - 12 IS - 4 N2 - MgH2 nanoparticles (NPs) uniformly anchored on graphene (GR) are fabricated based on a bottom-up self-assembly strategy as anode materials for lithium-ion batteries (LIBs). Monodisperse MgH2 NPs with an average particle size of ∼13.8 nm are self-assembled on the flexible GR, forming interleaved MgH2/GR (GMH) composite architectures. Such nanoarchitecture could effectively constrain the aggregation of active materials, buffer the strain of volume changes, and facilitate the electron/lithium ion transfer of the whole electrode, leading to a significant enhancement of the lithium storage capacity of the GMH composite. Furthermore, the performances of GMH composite as anode materials for LIBs are enabled largely through robust interfacial interactions with poly(methyl methacrylate) (PMMA) binder, which plays multifunctional roles in forming a favorable solid-electrolyte interphase (SEI) film, alleviating the volume expansion and detachment of active materials, and maintaining the structural integrity of the whole electrode. As a result, these synergistic effects endow the obtained GMH composite with a significantly enhanced reversible capacity and cyclability as well as a good rate capability. The GMH composite with 50 wt % MgH2 delivers a high reversible capacity of 946 mA h g-1 at 100 mA g -1 after 100 cycles and a capacity of 395 mAh g-1 at a high current density of 2000 mA g-1 after 1000 cycles. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/29608285/Magnesium_Hydride_Nanoparticles_Self_Assembled_on_Graphene_as_Anode_Material_for_High_Performance_Lithium_Ion_Batteries_ L2 - https://dx.doi.org/10.1021/acsnano.8b01033 DB - PRIME DP - Unbound Medicine ER -