Abstract
AbstractThe main characteristics of electrolytic reduction applied to indium recovery from aqueous chloride solutions were considered theoretically and examined experimentally. Also other media were considered for comparison. Potentiodynamic examinations pointed out that chloride electrolytes are superior to sulphuric and nitric acid-based ones for efficient indium deposition. The optimum conditions, allowing higher than 90% cathodic current efficiencies, were determined by galvanostatic experiments. In contrast, similar sulphate electrolytes could only yield lower than 50% efficiencies because of a stronger hydrogen evolution. The galvanostatic results confirmed the findings of the potentiodynamic study. The cathodic polarisation curves revealed the major characteristics of the deposition process, implying a reduction of the electroactive In3+ ions. Coupled processes are the dynamic transformations of complex species and various rates of simultaneous hydrogen evolution. The structure and the elemental composition of the—relatively dense—cathodic deposits were examined by scanning electron microscopy and energy-dispersive X-ray analysis. Various levelling agents were also tested, and gelatine (up to a concentration of 1 g/dm3 in the chloride electrolyte) was found efficient in grain refining.
Graphical abstract
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Electrochemistry,General Chemical Engineering
Reference39 articles.
1. Licht C, Peiro LT, Villalba G (2015) Global substance flow analysis of gallium, germanium and indium: quantification of extraction, uses and dissipative losses within their anthropogenic cycles. J. Ind. Ecol. 19:890–903
2. Alfantazi AM, Moskalyk RR (2003) Processing of indium. Miner Eng 16:687–694
3. Koleini JS, Mehrpouya H, Saberyan K, Abdolahi M (2010) Extraction of indium from zinc plant residues. Miner Eng 23:51–53
4. Szocs E, Schwager F, Toben M, Brese N (2008) High-speed Indium electrodeposition: efficient, reliable TIM technology. IEEE 2nd electronics systemintegration technology conference. IEEE, Greenwich, pp 347–350
5. Bhuiyan AG, Hashimoto A, Yamamoto A (2003) Indium nitride (InN): a review on growth, characterization, and properties. J Appl Phys 94:2779–2808
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