Simplified Pouch Cell Method for 3-Electrode Re-Testing of Harvested Double-Sided Electrodes From Commercial Lithium-Ion Batteries
نویسندگان
چکیده
Abstract A pouch cell method for retesting double-sided electrodes harvested from commercial lithium-ion batteries in a 3-electrode arrangement has been developed. By relying on pressure restraint plates to make tab electrical connections, this (1) requires no welding, (2) does not require dry room, (3) precision sealing equipment inside of an inert-gas glove box, and (4) removal composite material off one side the electrode which may compromise be tested other side. Lithium chips pressed onto copper mesh serve as reference counter electrolyte used was 1.0 M LiPF6 1:1 ethylene carbonate (EC):Diethyl (DEC) v/v. Electrochemical cycling 3.6 Ah 18650 demonstrated function showed stable capacity potential charge/discharge profiles after two cycles cathode four anode. The areal anode determined 5.50 ± 0.31 0.30 mAh/cm2, respectively, based range 0.005–1.5 V versus Li/Li+ 3.0–4.25 cathode. High frequency, 500 kHz impedance measurements cells shows real 1.55 Ohms 2.17 Ohms, is similar prior studies with continuous tabs capacity.
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ژورنال
عنوان ژورنال: Journal of electrochemical energy conversion and storage
سال: 2021
ISSN: ['2381-6872', '2381-6910']
DOI: https://doi.org/10.1115/1.4049236