Thin film a-Si based nano in micro complex structured anodes for high-performance lithium-ion secondary batteries

Ju Hyeon Shin, Seok Hyun, Gyutae Kim, Heon Lee

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The nano in micro complex structure is formed by wet etching, which is a simple, fast, and costeffective process. Thin-film a-Si-based anodes are fabricated by depositing a-Si on a nano in micro complex structured Ni foam current collector, which is performed by low-pressure chemical vapor deposition (LPCVD). Ni foams are then used as current collectors to increase the contact area between the active materials and current collector. This leads to an increase in the loading densities of the active materials. The nano in micro complex structured surface has large surface area with voids, which not only accommodate the volume changes during cycling, but also enhance adhesion between the active materials and current collector. As a result, after 190 cycles, a cell with etched Ni foam anode shows about 10% higher discharge capacity compare to a cell with Ni foil anode.

    Original languageEnglish
    Pages (from-to)104-108
    Number of pages5
    JournalNanoscience and Nanotechnology Letters
    Volume8
    Issue number1
    DOIs
    Publication statusPublished - 2016 Jan

    Bibliographical note

    Publisher Copyright:
    Copyright © 2016 American Scientific Publishers.

    Copyright:
    Copyright 2017 Elsevier B.V., All rights reserved.

    Keywords

    • Lithium-Ion Secondary Battery
    • Nano in Micro Complex Structure
    • Ni Foam
    • Thin Film a-Si Anode
    • Wet Etch Process

    ASJC Scopus subject areas

    • General Materials Science

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