University of Limerick
Browse
Amiinu_2023_Thin.pdf (2.58 MB)

A thin Si nanowire network anode for high volumetric capacity and long-life lithium-ion batteries

Download (2.58 MB)

Silicon nanowires (Si NWs) have been widely researched as the best alternative to graphite anodes for the next-generation of high-performance lithium-ion batteries (LIBs) owing to their high capacity and low discharge potential. However, growing binder-free Si NW anodes with adequate mass loading and stable capacity is severely limited by the low surface area of planar current collectors (CCs), and is particularly challenging to achieve on standard pure-Cu substrates due to the ubiquitous formation of Li+ inactive silicide phases. Here, the growth of densely-interwoven In-seeded Si NWs is facilitated by a thin-film of copper-silicide (CS) network in situ grown on a Cu-foil, allowing for a thin active NW layer (<10 µm thick) and high areal loading ( ≈ 1.04 mg/cm2) binder-free electrode architecture. The electrode exhibits an average Coulombic efficiency (CE) of > 99.6% and stable performance for > 900 cycles with ≈ 88.7% capacity retention. More significantly, it delivers a volumetric capacity of ≈ 1086.1 mA h/cm3 at 5C. The full-cell versus lithium manganese oxide (LMO) cathode delivers a capacity of ≈ 1177.1 mA h/g at 1C with a stable rate capability. This electrode architecture represents significant advances toward the development of binder-free Si NW electrodes for LIB application.

Funding

Multinary Compound Si, Ge and Sn Derived Nanocrystals: Composition, Shape and Heterostructure Control via Solution Methods (NanoIVCrystals)

Science Foundation Ireland

Find out more...

NEILLSBAT - Nanostructured Electrodes and Ionic Liquid Electrolytes for Ultra High Energy Density Lithium Sulfur Batteries

Science Foundation Ireland

Find out more...

Silicon Alloying Anodes for High Energy Density Batteries comprising Lithium Rich Cathodes and Safe Ionic Liquid based Electrolytes for Enhanced High VoltagE Performance.

European Commission

Find out more...

Confirm Centre for Smart Manufacturing

Science Foundation Ireland

Find out more...

Silicon Anodes through Nanostructural Development (SAND)

Science Foundation Ireland

Find out more...

Novel porous graphite as cathodes for advanced aluminium-ion batteries

European Commission

Find out more...

Selective Delayering of Low-geometry Materials by Plasma FIB Dx Chemistry for the Failure Analysis of Magnetic Sensors

Science Foundation Ireland

Find out more...

MAREI_Phase 2

Science Foundation Ireland

Find out more...

AMBER Phase 2

Science Foundation Ireland

Find out more...

History

Publication

Journal of Energy Chemistry, 81, pp. 20-27

Publisher

Elsevier

Other Funding information

T.K. acknowledges support from the Sustainable Energy Authority of Ireland through the Research Development and Demonstration Funding Program (Grant No. 19/RDD/548) and Enterprise Ireland through the Innovation Partnership Program (Grant No. IP 2019 0910)

Also affiliated with

  • Bernal Institute

Department or School

  • Chemical Sciences

Usage metrics

    University of Limerick

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC