The Mineral Battery: Combining Metal Extraction and Energy Storage

Abstract

Columbia. He studied the use of CuFeS 2 in hybrid battery configurations for both energy storage and Cu extraction during his PhD program under the supervision of Professor Edouard Asselin. His research focuses on electrochemistry including electrochemical energy storage, electrocatalysis, and corrosion. He is an author of more than 50 research articles and a book chapter.

Binder-free fabricated CuFeS2 electrodes for supercapacitor applications

“…The C s obtained for the electrodes is considerably higher than the previous reports of Deen et al [23], Sahoo et al [12], Zardkhoshoui et al [13]and slightly lower than the report of Lohkande et al [9] as shown in table 1. Table 1 shows the summary of specific capacitance (using three-electrode configuration) of CuFeS 2 and some copper-based electrode materials.…”

Anode electrolysis of sulfides

“…This process is different from the electrochemical reduction of sulfide in molten salt, which is a cathodic leaching of S 2− together with the reduction of metal cations ( 34 ). Compared with the oxidative leaching process in aqueous solutions ( 40 ), the sulfur gas can leave the electrode instantaneously without forming a sulfur layer that results in the slow kinetics and there is no need to worry about further oxidation of sulfur to sulfate ions. Hence, the combination of the anodic leaching and merit of molten salt enables a straightforward and clean electrochemical sulfide smelting process.…”

Anode Electrolysis of Copper Matte to Produce Copper and Iron

“…One of the promising branches is electrochemical methods. [11][12][13][14] Direct electrochemical reduction of sulfide or oxide minerals can improve the smelting efficiency and collect the sulfur element in the form of sulfur gas instead of SO 2 or other acid gases. [15][16][17][18] Since the Hall-Héroult process was firstly adopted in aluminum production in 1886, a series of outstanding methods and strategies in molten salt has been reported for sulfides and oxides electrolysis, such as FFC process, [19][20][21] MOE/MSE method, [22][23][24] OS method, [25][26][27] and USTB method.…”