Search results for "High C-rate"

showing 6 items of 6 documents

High-rate cycling performance of lead-acid batteries with nanostructured electrodes

2021

In this work we present lead-acid batteries with nanostructured electrodes cycled with different C-rate from 1C (1 hour to complete charge) up to 30C (120 seconds to complete charge) and imposing a very deep discharge. In comparison to the parameters usually used for commercial batteries, these are much more stressful conditions in terms of cut-off and charge/discharge rate.

Nanostructured ElectrodesHigh C-rate cyclingState of chargeNano TechnologyLead-Acid Battery
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Performance of Nanostructured Electrode in Lead Acid Battery

2015

Lead acid batteries have a large number of potential advantages, but the high weight of lead limits their use in new technologies, like hybrid or electrical cars, which require light batteries with high specific energy. We tried to overtake this limit with nanostructured electrodes of PbO2 and Pb, obtained by electrodeposition in polycarbonate template. In the case of lead, to obtain electrodes with very good mechanical stability, a systematic investigation of electrodeposition process was needed to overcome the formation of dendrites that is the principal limitation of electrochemical production of metal lead. Nanostructured electrodes were tested in a zero gap configuration, using commerc…

Settore ING-IND/23 - Chimica Fisica Applicatalcsh:Computer engineering. Computer hardwareLead-acid battery nano structured electrodes high capacity high C-ratelcsh:TP155-156lcsh:TK7885-7895lcsh:Chemical engineeringChemical Engineering Transactions
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High-Performance Lead-Acid Batteries Enabled by Pb and PbO2 Nanostructured Electrodes: Effect of Operating Temperature

2021

Lead-acid batteries are now widely used for energy storage, as result of an established and reliable technology. In the last decade, several studies have been carried out to improve the performance of this type of batteries, with the main objective to replace the conventional plates with innovative electrodes with improved stability, increased capacity and a larger active surface. Such studies ultimately aim to improve the kinetics of electrochemical conversion reactions at the electrode-solution interface and to guarantee a good electrical continuity during the repeated charge/discharge cycles. To achieve these objectives, our contribution focuses on the employment of nanostructured electr…

temperature testTechnologyMaterials scienceQH301-705.5template electrodepositionQC1-999Nanotechnology02 engineering and technology010402 general chemistryElectrosynthesis01 natural sciencesEnergy storageHigh C-rate cycling Lead nanowires Lead-acid battery Nanostructures cycling efficiency Temperature test Template electrodepositionOperating temperatureSettore ING-IND/17 - Impianti Industriali MeccaniciGeneral Materials ScienceBiology (General)Lead–acid batteryInstrumentationQD1-999Separator (electricity)Fluid Flow and Transfer Processeshigh C-rate cyclingNanoporouslead-acid batteryProcess Chemistry and TechnologyTPhysicsGeneral Engineeringlead nanowiresActive surface021001 nanoscience & nanotechnologyEngineering (General). Civil engineering (General)0104 chemical sciencesComputer Science ApplicationsChemistrySettore ING-IND/23 - Chimica Fisica ApplicataElectrodenanostructures cycling efficiencyTA1-20400210 nano-technologyApplied Sciences
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Nanostructured Lead Electrodes with Reduced Graphene Oxide for High-Performance Lead–Acid Batteries

2022

Nanostructured Pb electrodes consisting of nanowire arrays were obtained by electrodeposition, to be used as negative electrodes for lead–acid batteries. Reduced graphene oxide was added to improve their performances. This was achieved via the electrochemical reduction of graphene oxide directly on the surface of nanowire arrays. The electrodes with and without reduced graphene oxide were tested in a 5 M sulfuric acid solution using a commercial pasted positive plate and an absorbed glass mat separator in a zero-gap configuration. The electrodes were tested in deep cycling conditions with a very low cut-off potential. Charge–discharge tests were performed at 5C. The electrode wi…

Settore ING-IND/23 - Chimica Fisica ApplicataSettore ING-IND/17 - Impianti Industriali MeccaniciElectrochemistrylead–acid batteries; negative electrode; nanostructures; reduced graphene oxide; template electrodeposition; high C-rateEnergy Engineering and Power TechnologyElectrical and Electronic Engineeringlead–acid batteries negative electrode nanostructures reduced graphene oxide template electrodeposition high C-rateBatteries; Volume 8; Issue 11; Pages: 211
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Nanostructured lead-acid negative electrode with reduced graphene oxide

2021

Aim of this work is to develop a new nano-structured and nano-composite lead acid negative electrode with reduced graphene oxide (rGO). Nanostructured electrodes are fabricated by template electrodeposition of lead nanowires on a lead current collector. A polycarbonate track-etched membrane was used as a template (200 nm mean pores diameter). rGO was deposited on the nanostructured electrode from a graphene oxide (GO) dispersion in acetate buffer solution (ABS) (0.2 g/L). Potentiostatic deposition of rGO at -0.8 V vs. standard calomel electrode (SCE) was performed. Electrode with rGO was tested as negative electrode in cell with 5M sulfuric acid solution, a commercial pasted positive plate,…

Lead-acid batteriesNegative electrodeReduced graphene-oxideSettore ING-IND/23 - Chimica Fisica ApplicataHigh C-rateTemplate electrodepositionNanostructures
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Template electrodeposition and characterization of nanostructured Pb as a negative electrode for lead-acid battery

2019

Abstract Despite Lead Acid Battery (LAB) is the oldest electrochemical energy storage system, diffusion in the emerging sectors of technological interest is inhibited by its drawbacks. The principal ones are low energy density and negative plate sulphating on high rate discharging. In this work, it is shown the possibility of overcoming such drawbacks by using nanostructured lead as a negative electrode. Lead nanowires (NWs) were fabricated by electrochemical deposition in template, which is an easy, cheap, and easily scalable process. Their morphology and crystal structure have been characterized by electron microscopy and X-ray diffraction, respectively. An electrochemical cell simulating…

Auxiliary electrodeMaterials scienceNanostructureHigh C-Rate cyclingCycling efficiencyRenewable Energy Sustainability and the EnvironmentNanowireLead-acid batteryEnergy Engineering and Power TechnologyNanotechnologyTemplate electrodepositionElectrochemistryElectrochemical cellSettore ING-IND/23 - Chimica Fisica ApplicataLead nanowireElectrodePhysical and Theoretical ChemistryElectrical and Electronic EngineeringLead–acid batteryPorositySeparator (electricity)
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