کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10154680 | 1666311 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemically impregnated NiO catalyst for molten electrolyte based gas-tank-free LiO2 battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Closed LiO2 batteries consisting of electrolytes derived from molten salt have emerged as attractive energy-storage cells because of their unique oxygen-supply mechanism to form a stable Li2O discharge product without requiring an oxygen-gas-reservoir. However, the formation of stable Li2O discharge product increases the overpotential during the charging process, which compromises the cell performance because of the resulting parasitic reaction. In this study, we demonstrate a potent approach to reversibly operate an oxygen-gas-reservoir-free LiO2 battery by using chemically impregnated nickel oxide (NiO) nanoparticles as a catalyst on the carbon electrode. The efficient bottom-up process for decorating NiO on a carbon material in binary molten electrolyte enables not only to significantly reduce the loading level of the catalyst but also to enhance the electrochemical performance with preventing the detrimental parasitic reaction in the oxygen-gas-reservoir-free LiO2 cell. In particular, using the in situ gas analysis with electrochemical measurements, the 20â¯wt% NiO added to the carbon cathode is sufficient to reduce the charging potential without generation of parasitic gas evolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 68-74
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 68-74
نویسندگان
Kyungeun Baek, Jun Gyeong Lee, Aming Cha, Jiseok Lee, Kwangjin An, Seok Ju Kang,