Effects of In Situ Graphitic Nanocarbon Coatings on Cycling Performance of Silicon-Flake-Based Anode of Lithium Ion Battery
نویسندگان
چکیده
We coated graphitic nanocarbons by thermal chemical vapor deposition (CVD) on silicon flakes recycled from the waste of wafer manufacturing processes as an active material for anode lithium ion battery (LIB). Ferrocene contains both iron catalyst and carbon, while camphor serves additional carbon source. Water promotes catalytic growth nanocarbons, including nanotubes (CNTs), fibers (CFs), films made nanoparticles, at temperatures ranging 650 to 850 °C. The container rotates uniform coatings about 100 nm thick 800–1000 in lateral dimensions. Due short CVD time, besides CNTs CFs, surfaces deposit with high-density especially a low temperature Nanocarbon were characterized SEM, EDX, ESCA, Raman spectroscopy. Half-cells cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), retention capacity discharge/charge cycling. Silicon-flake-based nanocarbon °C exhibited 2000 mAh/g after cycles 0.1 C, without needing any conductivity enhancement such Super P.
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Lithium-ion batteries with a Si anode can drive large mechanical actuation by utilizing the dramatic volume changes of the electrode during the charge/discharge cycles. A large loading of more than 10 MPa can be actuated by a LiFePO4 ||Si full battery with a rapid response while the driving voltage is lower than 4 V.
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ژورنال
عنوان ژورنال: Coatings
سال: 2021
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings11020138