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Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode.
ACS Appl Mater Interfaces 2017; 9(3):2261-2266AA

Abstract

Magnesium hydride, MgH2, a recently developed compound for lithium-ion batteries, is considered to be a promising conversion-type negative electrode material due to its high theoretical lithium storage capacity of over 2000 mA h g-1, suitable working potential, and relatively small volume expansion. Nevertheless, it suffers from unsatisfactory cyclability, poor reversibility, and slow kinetics in conventional nonaqueous electrolyte systems, which greatly limit the practical application of MgH2. In this work, a vapor-grown carbon nanofiber was used to enhance the electrical conductivity of MgH2 using LiBH4 as the solid-state electrolyte. It shows that a reversible capacity of over 1200 mA h g-1 with an average voltage of 0.5 V (vs Li/Li+) can be obtained after 50 cycles at a current density of 1000 mA g-1. In addition, the capacity of MgH2 retains over 1100 mA h g-1 at a high current density of 8000 mA g-1, which indicates the possibility of using MgH2 as a negative electrode material for high power and high capacity lithium-ion batteries in future practical applications. Moreover, the widely studied sulfide-based solid electrolyte was also used to assemble battery cells with MgH2 electrode in the same system, and the electrochemical performance was as good as that using LiBH4 electrolyte.

Authors+Show Affiliations

Institute for Advanced Materials Research, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan.Institute for Advanced Materials Research, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan. Graduate School of Integrated Arts and Sciences, Hiroshima University , 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.Graduate School of Advanced Sciences of Matter, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan.Institute for Advanced Materials Research, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan.Institute for Advanced Materials Research, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan. Graduate School of Advanced Sciences of Matter, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28032748

Citation

Zeng, Liang, et al. "Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode." ACS Applied Materials & Interfaces, vol. 9, no. 3, 2017, pp. 2261-2266.
Zeng L, Ichikawa T, Kawahito K, et al. Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode. ACS Appl Mater Interfaces. 2017;9(3):2261-2266.
Zeng, L., Ichikawa, T., Kawahito, K., Miyaoka, H., & Kojima, Y. (2017). Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode. ACS Applied Materials & Interfaces, 9(3), pp. 2261-2266. doi:10.1021/acsami.6b11314.
Zeng L, et al. Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode. ACS Appl Mater Interfaces. 2017 Jan 25;9(3):2261-2266. PubMed PMID: 28032748.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode. AU - Zeng,Liang, AU - Ichikawa,Takayuki, AU - Kawahito,Koji, AU - Miyaoka,Hiroki, AU - Kojima,Yoshitsugu, Y1 - 2017/01/11/ PY - 2016/12/30/pubmed PY - 2016/12/30/medline PY - 2016/12/30/entrez KW - all-solid-state KW - conversion-type electrode KW - lithium-ion batteries KW - metal hydrides KW - negative electrode SP - 2261 EP - 2266 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 9 IS - 3 N2 - Magnesium hydride, MgH2, a recently developed compound for lithium-ion batteries, is considered to be a promising conversion-type negative electrode material due to its high theoretical lithium storage capacity of over 2000 mA h g-1, suitable working potential, and relatively small volume expansion. Nevertheless, it suffers from unsatisfactory cyclability, poor reversibility, and slow kinetics in conventional nonaqueous electrolyte systems, which greatly limit the practical application of MgH2. In this work, a vapor-grown carbon nanofiber was used to enhance the electrical conductivity of MgH2 using LiBH4 as the solid-state electrolyte. It shows that a reversible capacity of over 1200 mA h g-1 with an average voltage of 0.5 V (vs Li/Li+) can be obtained after 50 cycles at a current density of 1000 mA g-1. In addition, the capacity of MgH2 retains over 1100 mA h g-1 at a high current density of 8000 mA g-1, which indicates the possibility of using MgH2 as a negative electrode material for high power and high capacity lithium-ion batteries in future practical applications. Moreover, the widely studied sulfide-based solid electrolyte was also used to assemble battery cells with MgH2 electrode in the same system, and the electrochemical performance was as good as that using LiBH4 electrolyte. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/28032748/Bulk_Type_All_Solid_State_Lithium_Ion_Batteries:_Remarkable_Performances_of_a_Carbon_Nanofiber_Supported_MgH2_Composite_Electrode_ L2 - https://dx.doi.org/10.1021/acsami.6b11314 DB - PRIME DP - Unbound Medicine ER -