Solution synthesis of lead seeded germanium nanowires and branched nanowire networks and their application as Li-ion battery anodes
| Autor: | Kumaranand Palaniappan, Grace Flynn, Tadhg Kennedy, Martin Sheehan, Kevin M. Ryan |
|---|---|
| Přispěvatelé: | SFI, IRC, Intel Ireland |
| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Materials science Nanowire chemistry.chemical_element Nanoparticle Bioengineering Nanotechnology Germanium 02 engineering and technology 010402 general chemistry 01 natural sciences Lithium-ion battery law.invention law General Materials Science Electrical and Electronic Engineering Mechanical Engineering General Chemistry branched nanowires 021001 nanoscience & nanotechnology Nanowire battery 0104 chemical sciences germanium chemistry Chemical engineering nanowires Mechanics of Materials Lithium 0210 nano-technology Single crystal |
| Zdroj: | Nanotechnology. 28(25) |
| ISSN: | 1361-6528 |
| Popis: | peer-reviewed Herein, we report the high density growth of lead seeded germanium nanowires (NWs) and their development into branched nanowire networks suitable for application as lithium ion battery anodes. The synthesis of the NWs from lead seeds occurs simultaneously in both the liquid zone (solution-liquid-solid (SLS) growth) and solvent rich vapor zone (vapor-liquid-solid (VLS) growth) of a high boiling point solvent growth system. The reaction is sufficiently versatile to allow for the growth of NWs directly from either an evaporated catalyst layer or from pre-defined nanoparticle seeds and can be extended to allowing extensive branched nanowire formation in a secondary reaction where these seeds are coated onto existing wires. The NWs are characterized using TEM, SEM, XRD and DF-STEM. Electrochemical analysis was carried out on both the single crystal Pb-Ge NWs and the branched Pb-Ge NWs to assess their suitability for use as anodes in a Li-ion battery. Differential capacity plots show both the germanium wires and the lead seeds cycle lithium and contribute to the specific capacity that is approximately 900 mAh/ g for the single crystal wires, rising to approximately 1100 mAh/ g for the branched nanowire networks. ACCEPTED peer-reviewed |
| Databáze: | OpenAIRE |
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