Electrolytic recovery of nickel and cobalt as multi-elemental coatings: an option for the recycling of spent Ni-MH batteries

Díaz-López, J C; Angarita, Juan R. A. Isaza; Vargas-Angarita, C Y; Blanco, Sergio; Delvasto, Pedro

doi:10.1088/1742-6596/1119/1/012003

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Electrolytic recovery of metals for coatings manufacturing emerges as a promising micro-recycling operation to deal with battery waste. The procedure encompasses four low-tech steps, namely: mechanical dismantling, physical separation of the electroactive materials, leaching of the electroactive materials, solution treatment ( ltration/conditioning), and electrodeposition of the coating 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Micro-recycling of spent Ni-Cd batteries for the obtention of electrocatalytic coatings

Delvasto

Rueda

Monsalve

et al. 2022

Preprint

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A micro-recycling approach was explored to produce catalytic metallic coatings for the hydrogen evolution reaction (HER). For this aim, discarded Ni-Cd batteries were employed as raw material. After dismantling the batteries, the active powder material, containing Cd and Ni compounds, was leached in a solution containing citric acid and hydrogen peroxide. The dissolved metals were electro-deposited on copper plates using a two electrodes cell at the following potentials (mV): -1900, -2000, and -2100 mV. The CdNi coating produced at -2000 mV, contained 92.6 % Cd and 7.4 % Ni. This coating was studied by cyclic voltammetry (CV) and potentiodynamic analysis in two different KOH solutions (0.1 M and 1.0 M). The CV analysis showed that the CdNi electrode was electrochemically stable in a wide operating voltage range (between oxygen evolution reaction and HER). Using an uncompensated resistance correction, the Tafel slopes for HER were obtained. The potentiodynamic analysis revealed that the synthesized CdNi electrode showed a catalytic activity for HER just 25.5 % smaller than the correspondent response of a standard pure Ni electrode. Our results serve as a proof of concept about the application of micro-recycling of spent batteries to produce sustainable electroactive catalytic materials for hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Micro-recycling of spent Ni-Cd batteries for the obtention of electrocatalytic coatings

Delvasto

Rueda

Monsalve

et al. 2022

Preprint

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“…Several industries could potentially incorporate into their processes these alternative raw materials. For example: chemical feedstock production [4,26,27], cast shops [28], metals electroplating [29][30][31][32] and glassmaking [33]. Sinteredclay bricks and tiles production is a ubiquitous small-scale industry in most countries [34].…”

Section: Introductionmentioning

confidence: 99%

On the Incorporation of Pristine and Pre-vitrified Alkaline Battery Waste into Non-structural Clay Bricks

Assías

Clavijo

Usma

et al. 2020

Waste Biomass Valor

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The purpose of this work was to explore the incorporation of black manganese oxide powder extracted from alkaline batteries into sintered-clay bricks. The black manganese oxide powder was added into the clay mixture in two different states: pristine and pre-vitrified. Three levels of addition were evaluated according to the final wt% of manganese in the bricks: 0.0, 0.1, and 2.5. The resulting test-bricks were then assessed to determine the following physical and mechanical properties: color change, water absorption, water saturation coefficient, compressive strength, and leaching/efflorescence tendency. The results were statistically tested for significance and compared to a standard industrial formulation for non-structural sintered-clay bricks used locally in Girón, Santander (Colombia). In general, the properties of the test-bricks deviated slightly from the standard formulation only when the final content of manganese in the test-bricks reached 2.5 wt%. In particular, the test-bricks with 2.5 wt% of manganese added in the pre-vitrified state, showed a darker brown color, 1.7 % less water absorption, and a 68 % increase on compressive strength, when compared to the industrial reference red-clay bricks. It is worth to point out that none of the test-bricks studied showed efflorescence tendency. In conclusion, the work proves that the Mn-oxides contained in spent alkaline batteries can be successfully incorporated into nonstructural red clay bricks. These findings would help to ease the adoption of novel circular economy strategies in developing countries with no access to metallurgical facilities for battery recycling.

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The recovery of rare earth elements from waste electrical and electronic equipment: A review

Sagrillo Pimassoni,

Weitzel Dias Carneiro Lima,

Yamane

et al. 2023

Hydrometallurgy

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Electrolytic recovery of nickel and cobalt as multi-elemental coatings: an option for the recycling of spent Ni-MH batteries

Cited by 4 publications

References 4 publications

Micro-recycling of spent Ni-Cd batteries for the obtention of electrocatalytic coatings

Micro-recycling of spent Ni-Cd batteries for the obtention of electrocatalytic coatings

On the Incorporation of Pristine and Pre-vitrified Alkaline Battery Waste into Non-structural Clay Bricks

The recovery of rare earth elements from waste electrical and electronic equipment: A review

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