This review article presents the literature survey on radio frequency (RF)-magnetron sputtered LiCoO thin films used as cathode materials in all-solid-state rechargeable lithium microbatteries. As the process parameters lead to a variety of texture and preferential orientation, the influence of the sputtering conditions on the deposition of LiCoO thin films are considered. The electrochemical performance is examined as a function of composition of the sputter Ar/O gas mixture, gas flow rate, pressure, nature of substrate, substrate temperature, deposition rate, and annealing temperature. The state-of-the-art of lithium microbatteries fabricated by the rf-sputtering method is also reported.
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http://dx.doi.org/10.3390/ma12172687 | DOI Listing |
Angew Chem Int Ed Engl
October 2024
Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China.
To address the challenge of low discharge platforms (<1.5 V) in aqueous zinc-based batteries, highly concentrated salts have been explored due to their wide electrochemical window (~3 V). However, these electrolytes mainly prevent hydrogen evolution and dendrite growth at the anode without significantly enhancing voltage performance.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2024
Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195, United States.
Separators play a critical role in lithium-ion batteries (LIBs) by facilitating lithium-ion (Li-ion) transport while enabling safe battery operation. However, commercial separators made from polypropylene (PP) or polyethylene (PE) impose a discrete processing step in current LIB manufacturing as they cannot be manufactured with the same slot-die coating process used to fabricate the electrodes. Moreover, commercial separators cannot accommodate newer manufacturing processes used to produce leading-edge microbatteries and flexible batteries with customized form factors.
View Article and Find Full Text PDFSmall
October 2024
Department of Chemistry, Humboldt-University Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany.
Upcoming energy-autonomous mm-scale Internet-of-things devices require high-energy and high-power microbatteries. On-chip 3D thin-film batteries (TFBs) are the most promising option but lack high-rate anode materials. Here, LiTiO thin films fabricated by atomic layer deposition (ALD) are electrochemically evaluated on 3D substrates for the first time.
View Article and Find Full Text PDFACS Appl Electron Mater
March 2024
Department of Chemistry and Materials Science, Aalto University, Espoo FI-00076, Finland.
Lithium phosphorus oxynitride (LiPON) is a state-of-the-art solid electrolyte material for thin-film microbatteries. These applications require conformal thin films on challenging 3D surface structures, and among the advanced thin-film deposition techniques, atomic layer deposition (ALD) is believed to stand out in terms of producing appreciably conformal thin films. Here we quantify the conformality (i.
View Article and Find Full Text PDFACS Nano
December 2023
University of Twente, MESA+ Institute for Nanotechnology, P.O. Box 217, 7500AE Enschede, The Netherlands.
To meet the increasing demands of high-energy and high-power-density lithium-ion microbatteries, overlithiated LiMnO (0 ≤ ≤ 1) is an attractive cathode candidate due to the high theoretical capacity of 296 mAh g and the interconnected lithium-ion diffusion pathways. However, overlithiation triggers the irreversible cubic-tetragonal phase transition due to Jahn-Teller distortion, causing rapid capacity degradation. In contrast to conventional lithium-ion batteries, microbatteries offer the opportunity to develop specific thin-film-based modification strategies.
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