کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1636636 | 1516983 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical behavior of Li+, Mg2+, Na+ and K+ in LiFePO4/ FePO4 structures
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrochemical behavior of Li+, Mg2+, Na+ and K+ in LiFePO4/ FePO4 structures Electrochemical behavior of Li+, Mg2+, Na+ and K+ in LiFePO4/ FePO4 structures](/preview/png/1636636.png)
چکیده انگلیسی
Besides Li+ and Mg2+, the electrochemical behavior of Na+ and K+ in LiFePO4/ FePO4 structures was studied since they naturally coexist with Li+ and Mg2+ in brine. The cyclic voltammogram (CV) results indicated that Na+ exhibits some reversibility in LiFePO4/FePO4 structures. Its reduction peak appears at â0.511 V, more negative than that of Li+ (â0.197 V), meaning that a relatively positive potential is beneficial for decreasing Na+ insertion. The reduction peak of K+ could not be found clearly, indicating that K+ is difficult to insert into the FePO4 structure. Furthermore, technical experiments using real brine with a super high Mg/Li ratio (493) at a cell voltage of 0.7V showed that the final extracted capacity of Li+, Mg2+ and Na+ that can be attained in 1 g LiFePO4 is 24.1 mg, 7.32 mg and 4.61 mg, respectively. The Mg/Li ratio can be reduced to 0.30 from 493, and the Na/Li ratio to 0.19 from 16.7, which proves that, even in super high Mg/Li ratio brine, if a cell voltage is appropriately controlled, it is possible to separate Li+ and other impurities effectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 23, Issue 4, April 2013, Pages 1157-1164
Journal: Transactions of Nonferrous Metals Society of China - Volume 23, Issue 4, April 2013, Pages 1157-1164
نویسندگان
Zhong-wei ZHAO, Xiu-fen SI, Xin-xing LIANG, Xu-heng LIU, Li-hua HE,