کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
212071 462032 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery of valuable metal ions from the spent lithium-ion battery using aqueous mixture of mild organic acids as alternative to mineral acids
ترجمه فارسی عنوان
بازیابی یون های با ارزش فلزات از باتری لیتیوم یون با استفاده از مخلوط های آبی آلی خام مانند جایگزینی برای اسید معدنی
کلمات کلیدی
باتری لیتیوم یون، بازیابی کبالت و لیتیوم، استخراج شیمیایی، اسید سیتریک، اسکالیک اسید، فلوراید آمونیوم
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Mixture of ascorbic acid and citric acid at 80 °C is used to extract Co and Li ions from the spent Li-ion battery.
• The dissolution follows a reductive-complexation mechanism under stoichiometric condition.
• The dissolution rate constant k = 3.1 ´ 10-3 min−1 for Li and k = 0.8 ´ 10-3 min−1 for Co ions.
• Formation of Co(III)- and Co(II)-citrate complex during the dissolution is confirmed.
• A selective precipitation of Co as Co-oxalate and Li as LiF is carried out.

A well characterized cathode material (LiCoO2) recovered from spent lithium-ion battery is dissolved in aqueous mixture of citric acid (chelating agent) and ascorbic acid (reductant) at 80 °C. The dissolution proceeds with a reductive-complexing mechanism, and complete dissolution occurs in about 6 h when stoichiometric amount of C/A is used. The dissolution rate constants (k) are 3.1 × 10− 3 min− 1 for Li and 0.8 × 10− 3 min− 1 for Co ions as determined by ‘cubic rate law’ plots. The formation of Co(III)– to Co(II)–citrate during the dissolution is confirmed from the UV–Vis spectra. The dissolved solution was subjected for selective precipitation of cobalt as Co-oxalate and lithium as LiF using oxalic acid and NH4F, respectively. The present study has a merit when compared to literature reports as we make use of mild organic acids as alternatives to mineral acids.

Resource recycling from the spent lithium-ion battery through chemical extraction and precipitation.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 151, January 2015, Pages 73–77
نویسندگان
, , , , , ,