کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6578753 | 1422929 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molten salt synthesis of Mn2O3 nanoparticle as a battery type positive electrode material for hybrid capacitor in KNO3-NaNO2-NaNO3 melts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An innovative kind of low-temperature inorganic molten salt hybrid capacitor was first put forward. Mn2O3 nanoparticle was selected as battery type positive electrode of hybrid capacitor. The high crystallinity Mn2O3 nanoparticles with large specific surface areas were successfully prepared by molten salt synthesis method using ternary alkali nitrates. Electrochemical performances of Mn2O3 electrode were evaluated by cyclic voltammetry, square wave voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge in KNO3 (53â¯wt%)-NaNO2 (40â¯wt%)-NaNO3 (7â¯wt%) melts at 423â¯K. The results illustrated that Mn2O3 electrode transferred one electron during the reduction reaction and the Mn2O3 nanoparticle exhibited a high specific capacity of 669.6â¯Câ¯gâ1 (186.0â¯mAhâ¯gâ1, 2.51â¯Fâ¯cmâ2) at a current density of 5â¯mAâ¯cmâ2. Furthermore, Mn2O3 electrode exhibited excellent cycle stability, and the capacity retention was up to 90.2% after 5000 cycles at a current density of 20â¯mAâ¯cmâ2. The hybrid capacitors with molten salt electrolyte could be considered as a potential application in some specific situation which requires the high-temperature demand.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 349, 1 October 2018, Pages 613-621
Journal: Chemical Engineering Journal - Volume 349, 1 October 2018, Pages 613-621
نویسندگان
Yang Zhao, De-Bin Ji, Pu Wang, Yong-De Yan, Yun Xue, Heng-Bin Xu, Yuan Liang, Hua-Jiang Luo, Mi-Lin Zhang, Wei Han,