Pitch-based carbon foam electrodeposited with lead as positive current collectors for lead acid batteries

Abstract

Lead electrodeposited carbon foam (LCF), whose substrate was made from pitch by a template method, was investigated as possible positive current collectors for lead acid batteries. Scanning electron microscopy, cyclic voltammetry, and galvanostatic chargedischarge tests were employed to characterize the effect of the proposed collector on the structure and electrochemical properties of the positive active material (PAM). The LCF with uniform and dense lead coating shows the similar electrochemical characteristics to metallic lead in the voltage range where the positive electrodes of lead acid batteries operate. The LCF and lead slices were used as the positive current collectors to equip lead acid batteries, respectively. Comparative charge-discharge tests show that a battery equipped with a LCF collector exhibits higher PAM utilization efficiency and longer cycle life, for LCF can provide large specific surface area which is beneficial to electrochemical reactions and PAM adhesion. In addition, a light lead acid battery with a LCF positive current collector and a carbon foam negative current collector was made and tested for the first time. It deserves systematic industrial study in the future.

Preparation of erythritol–graphite foam phase change composite with enhanced thermal conductivity for thermal energy storage applications

“…The open and interconnected pores of carbon foams derived from PU templates could have facilitated the access to the micropores and mesopores of carbon materials. Thus, the template method has been employed to fabricate various carbon foams using various carbon precursors for several potential applications [36][37][38][39][40]. The carbon foam based composites derived from the PU template method have been already demonstrated as a promising potential material for insulation, sorption, catalysis, purification and separation of oil and water [41,42].…”

Preparation of porous lead from shape-controlled PbO bulk by in situ electrochemical reduction in ChCl–EG deep eutectic solvent

“…Porous lead has been acknowledged as a favorable material in many applications including light-weight electrodes of lead-acid battery [1][2][3][4], cryogenic and magnetic shielding materials [2], shock and impact absorbers [5,6] due to its desirable properties such as high porosity, high specific surface area, low volume density, unusual acoustic properties, and electromagnetic wave absorption performance. Given such prospective application potentials, exploring the preparation methods of porous lead with homogeneous porosity distribution and high specific surface area becomes highly desirable.…”

“…Particularly, the electrodeposition technique is a very suitable method to prepare porous lead [9]. The advantages of this way as compared with others are low capital investment and costs, as well as uniform pore size and high porosity of products [3,4]. The electrolytes for lead electroplating are usually acidic such as hydrofluoride [1], pyrophosphate [10], fluorborate [11], fluorosilicate [12], bromide [13], iodide [13], nitrate [14,15], acetate [16] chloride [17], etc.…”

Manufacturing microporous foam zinc materials with high porosity by electrodeposition

“…Hence, a new manufacturing process should be developed for the microporous metallic foam. The electro-deposition is the most popular method for preparing the foam metal materials for metal electrodes [5][6][7][8] . However, for the best of our knowledge, so far, the use of this promising method was limited to the deposition of copper, tin, nickel and their alloys.…”