首页|Confluence of ZnO and PTFE Binder for Enhancing Performance of Thin-Film Lithium-Ion Batteries

Confluence of ZnO and PTFE Binder for Enhancing Performance of Thin-Film Lithium-Ion Batteries

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Developing anode materials with high specific capacity and cycling stability is vital for improving thin-film lithium-ion batteries.Thin-film zinc oxide(ZnO)holds promise due to its high specific capacity,but it suffers from volume changes and structural stress during cycling,leading to poor battery performance.In this research,we ingeniously combined polytetrafluoroethylene(PTFE)with ZnO using a radio frequency(RF)magnetron co-sputtering method,ensuring a strong bond in the thin-film composite electrode.PTFE effectively reduced stress on the active material and mitigated volume change effects during Li+ion intercalation and deintercalation.The composite thin films are thoroughly characterized using advanced techniques such as X-ray diffraction,scanning electron microscopy,and X-ray photoelectron spectroscopy for investigating correlations between material properties and electrochemical behaviors.Notably,the ZnO/PTFE thin-film electrode demonstrated an impressive specific capacity of 1305 mAh g1(=7116 mAh cm-3)at a 0.5C rate and a remarkable capacity retention of 82％from the 1st to the 100th cycle,surpassing the bare ZnO thin film(50％).This study provides valuable insights into using binders to stabilize active materials in thin-film batteries,enhancing battery performance.

li-ion batteriesmetal oxidesanodespolytetrafluoroethylene(PTFE)thin films

Subhashree Behera、Swathi Ippili、Venkatraju Jella、Na-Yeong Kim、Seong Cheol Jang、Ji-Won Jung、Soon-Gil Yoon、Hyun-Suk Kim

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Department of Materials Science and Engineering,Chungnam National University,Daejeon 34134,South Korea

School of Materials Science and Engineering,University of Ulsan,Ulsan 44776,South Korea

Department of Energy and Materials Engineering,Dongguk University,Seoul 04620,South Korea

Basic Research Program through the National Research Foundation of Korea(NRF)Ministry of EducationMinistry of EducationSemiconductor-Secondary Battery Interfacing Platform Technology Development Project of NN FCNational Research Foundation of Korea(NRF)grant funded by the Korean government(MSIP)National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIP)Regional Innovation Strategy(RIS)through the National Research Foundation of Korea(NRF)grant funded by the Ministry of EducationGRDC(Global Research Development Center)Cooperative Hub Program through the National Research Foundation of Korea(NRF)funded by Dongguk University Research Fund of 2023Korea Evaluation Institute of Industrial Technology grant funded by the Korean Government Ministry of Trade,Industry and Energy

2021R1A6A1A030436822022R1A2C2008273NRF-2021R1A2B5B03002016NRF-2021R1A2C10107972021RIS-003RS-2023-00257595RS-2022-00155706

2024

10.1002/eem2.12734

能源与环境材料(英文)

能源与环境材料(英文)

ISSN：
年,卷(期)：2024.7(5)