Dynamic monitoring of structural changes in nickel hydroxide electrodes during discharge in batteries

Ortiz, Mariela; Becker, Daniel; Garaventta, Guillermo Norberto; Visintín, Arnaldo; Castro, E.B.; Real, Silvia

doi:10.1016/j.electacta.2011.01.045

Cited by 24 publications

(10 citation statements)

References 33 publications

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“…The electrode impregnated with a high-frequency pulse current shows the best performance of all electrodes tested. This situation can be directly related to the morphology of the deposit of active material as evidenced in previous work [40].…”

Section: Rate Capabilitysupporting

confidence: 53%

Pulse-Current Electrodeposition for Loading Active Material on Nickel Electrodes for Rechargeable Batteries

Becker

Garaventta

Visintín

2013

ISRN Electrochemistry

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Although the pulse-current electrodeposition method is a commonly used technique, it has not been widely employed in electrode preparation. This method was applied to sintered nickel electrodes in a nickel salt solution containing additives. The active material that was obtained, nickel hydroxide, was studied using different characterization techniques. Electrodes impregnated with pulse current had higher capacity than those impregnated with continuous current. The active material is homogeneous and compact with optimum loading and good performance during discharge. These characteristics would provide a large amount of energy in a short time due to an increase in the electrode kinetic reaction.

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Section: Rate Capabilitysupporting

confidence: 53%

Pulse-Current Electrodeposition for Loading Active Material on Nickel Electrodes for Rechargeable Batteries

Becker

Garaventta

Visintín

2013

ISRN Electrochemistry

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“…The impedance arcs of semiinfinite diffusion processes were observed from impedance spectra of both MH electrodes [17][18][19][20] and NiOOH/Ni(OH) 2 electrode studies [13,15,16,35]. However, only one Warburg behavior arc was observed at low frequency region in this work.…”

Section: Full Battery Impedancementioning

confidence: 65%

“…Characterizations through EIS impedance for NiOOH/ Ni(OH) 2 electrodes [13,14] delivered valuable contributions to the development of nickel-based alkaline rechargeable batteries. The modification of Ni electrodes [15,16] is experienced with the abundant assistance of the EIS technique for performance improvement of Ni-MH batteries. Previously, Kuriyama et al [17] fully developed a deterioration study of metal-hydride (MH) electrodes with impedance measurement and EC simulation.…”

Section: Advances In Physical Chemistrymentioning

confidence: 99%

“…To protect Ni-MH batteries under the overcharge condition, the capacity of negative electrodes is usually designed as 1.5 to 2 times that of positive electrodes [27]. After evolving on the positive electrode, oxygen diffuses through the separators with unsaturated electrolyte and reaches the negative electrode to recombine with water molecules (see (16)). The side reactions on both electrodes during overcharge [27] can be expressed as follows:…”

Section: Changes Of Ohmic and Charge Transfer Resistancesmentioning

confidence: 99%

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Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Zhu

Davis

et al. 2016

Advances in Physical Chemistry

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Impedance measurement was conducted at the entire cell level for studying of the Ni-MH rechargeable batteries. An improved equivalent circuit model considering diffusion process is proposed for simulation of battery impedance data at different charge input levels. The cell capacity decay was diagnosed by analyzing the ohmic resistance, activation resistance, and mass transfer resistance of the Ni-MH cells with degraded capacity. The capacity deterioration of this type, Ni-MH cell, is considered in relation to the change of activation resistance of the nickel positive electrodes. Based on the report and surface analysis obtained from the energy dispersive X-ray spectroscopy, the composition formula of metal-hydride electrodes can be closely documented as the AB5 type alloy and the “A” elements are recognized as lanthanum (La) and cerium (Ce). The capacity decay of the Ni-MH cell is potentially initiated due to starved electrolyte for the electrochemical reaction of active materials inside the Ni-MH battery, and the discharge product of Ni(OH)2 at low state-of-charge level is anticipated to have more impeding effects on electrode kinetic process for higher power output and efficient energy delivery.

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“…Nickel hydroxide (Ni(OH) 2 ) is a typical 2D lamellar material which has been the most commonly used cathode material for Ni−Zn battery on account of its high proton diffusion coefficient, high energy, low cost, low toxicity and potential applications in rechargeable batteries . The redox reaction of the Ni(OH) 2 cathode in Ni−Zn battery is described as following:

true Ni {(OH)}_{2} + 2 {OH}^{-} \frac{charging}{discharging} 2 {NiOOH + 2 normalH}_{2} O + 2 e^{-}

true (normalE^{0} = 0.49 normalV versus SHE)

…”

Section: Nickel Hydroxide‐based Cathodementioning

confidence: 99%

Ni‐based Nanostructures as High‐performance Cathodes for Rechargeable Ni−Zn Battery

et al. 2018

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Aqueous rechargeable Ni−Zn battery with high capacity, low cost, and reliable safety has stimulated extensive interests for their promising applications in electric vehicles and portable electronics. The electrochemical properties of electrodes mostly determine the performances of the whole batteries. Currently, the capacities of the most developed cathodes are still far away from that of commercial Zn anode (820 mAh g−1), which is the major barrier for further boosting the energy density of Ni−Zn battery. In recent years, various Ni based materials like α‐Ni(OH)2, β‐Ni(OH)2, NiO and NiCo2O4 have attracted considerable attention and been widely explored as cathode materials for Ni−Zn batteries. However, the poor conductivity and unsatisfactory cyclic stability of Ni‐based materials severely limit their implementation as robust cathodes for Ni−Zn batteries with high energy density and durability. To address these issues, substantial efforts have been made and great processes have been achieved. Herein, we highlight recent advances on rationally structural and componential design of Ni based electrodes for Ni−Zn batteries. The relationships between structures and performances as well as the mechanisms are also discussed. Finally, we present perspectives on the research of next‐generation electrodes with high electrochemical performances.

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Dynamic monitoring of structural changes in nickel hydroxide electrodes during discharge in batteries

Cited by 24 publications

References 33 publications

Pulse-Current Electrodeposition for Loading Active Material on Nickel Electrodes for Rechargeable Batteries

Pulse-Current Electrodeposition for Loading Active Material on Nickel Electrodes for Rechargeable Batteries

Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Ni‐based Nanostructures as High‐performance Cathodes for Rechargeable Ni−Zn Battery

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