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Issue 36, 2018, Issue in Progress
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Ni–Al–Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries

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Abstract

To obtain full advantage of state-of-the-art solid-state lithium-based batteries, produced by sequential deposition of high voltage cathodes and promising oxide-based electrolytes, the current collector must withstand high temperatures (>600 °C) in oxygen atmosphere. This imposes severe restrictions on the choice of materials for the first layer, usually the cathode current collector. It not only must be electrochemically stable at high voltage, but also remain conductive upon deposition and annealing of the subsequent layers without presenting a strong diffusion of its constituent elements into the cathode. A novel cathode current collector based on a Ni–Al–Cr superalloy with target composition Ni0.72Al0.18Cr0.10 is presented here. The suitability of this superalloy as a high voltage current collector was verified by determining its electrochemical stability at high voltage by crystallizing and cycling of LiCoO2 directly onto it.

Graphical abstract: Ni–Al–Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries

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Publication details

The article was received on 20 Mar 2018, accepted on 24 May 2018 and first published on 04 Jun 2018


Article type: Paper
DOI: 10.1039/C8RA02461H
RSC Adv., 2018,8, 20304-20313
  • Open access: Creative Commons BY license
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    Ni–Al–Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries

    A. N. Filippin, T. Lin, M. Rawlence, T. Zünd, K. Kravchyk, J. Sastre-Pellicer, S. G. Haass, A. Wäckerlin, M. V. Kovalenko and S. Buecheler, RSC Adv., 2018, 8, 20304
    DOI: 10.1039/C8RA02461H

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