کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614149 | 459620 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the intercalation of polyvalent cations (Mg2+, Zn2+) into λ-MnO2 for rechargeable aqueous battery
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of the intercalation of polyvalent cations (Mg2+, Zn2+) into λ-MnO2 for rechargeable aqueous battery Investigation of the intercalation of polyvalent cations (Mg2+, Zn2+) into λ-MnO2 for rechargeable aqueous battery](/preview/png/6614149.png)
چکیده انگلیسی
A simple acid leaching technique is demonstrated to produce λ-MnO2 by treating LiMn2O4 with H2SO4. λ-MnO2 shows high intercalation capacities as the positive electrode material for rechargeable aqueous batteries. The structure and morphology of the nano-particles are characterized by X-ray power diffraction, inductively coupled plasma, X-ray photoelectron spectroscopy, scanning and transmission electron microscopy. The electrochemical performance of λ-MnO2 is investigated by cyclic voltammetry, constant current charge-discharge tests and electrochemical impedance spectroscopy. λ-MnO2 has ideal battery behaviors for polyvalent cations (Mg2+, Zn2+) to intercalate/deintercalate in the aqueous electrolyte. The λ-MnO2 electrode shows a high initial discharge capacity of 545.6 mAh gâ1 at 13.6 mA gâ1 in 0.5 mol dmâ3 MgCl2 with a columbic efficiency of nearly 100%. In addition, it shows good cycling stability and maintains a capacity of 155.6 mAh gâ1 after 300 cycles in 1 mol dmâ3 MgCl2 electrolyte.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 116, 10 January 2014, Pages 404-412
Journal: Electrochimica Acta - Volume 116, 10 January 2014, Pages 404-412
نویسندگان
Congli Yuan, Ying Zhang, Yue Pan, Xinwei Liu, Guiling Wang, Dianxue Cao,