Structure and electrochemical properties of nickel hydroxide electrodes with cobalt additives

Li, Xiaofeng; Li, Shu-Mian; Li, Jiayong; Dong, Hua

doi:10.1007/s10800-008-9681-5

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Glasses' properties for instance are hard to predict because there is not a current theoretical framework that accurately models glasses [58]. Another example, is how new methods of electrode synthesis are developed [61][62][63], where a two stage lithiation process was developed and it can be Co free. Expanding on Figure 6, various software applications are available to simulate different components of a battery.…”

Section: Solid State Electrolyte Materialsmentioning

confidence: 99%

Balancing Cost, Sustainability, and Performance: The Future of Solid-State Electrolytes in Automotive Batteries

Delgado Aguilar,

Delgado Suarez,

Delgado Gomez

2023

Preprint

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This article presents a review of resources for batteries with a specific focus on sustainability aspects related to raw materials, electrode and electrolyte chemistries suitable for the automobile industry. We emphasize the importance of prioritizing sustainability in battery technology evolution, which is expected to shift towards earth-abundant materials. One notable advancement in this direction is the utilization of glass solid-state electrolytes, known for their high ionic conductivity, low electronic conductivity, and high dielectric constant. However, our review suggests that further research should explore synthesis methods to modify anisotropic properties, enhancing the performance of solid-state electrolytes, particularly in facilitating the flow of ions.

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Section: Solid State Electrolyte Materialsmentioning

confidence: 99%

Balancing Cost, Sustainability, and Performance: The Future of Solid-State Electrolytes in Automotive Batteries

Delgado Aguilar,

Delgado Suarez,

Delgado Gomez

2023

Preprint

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“…Other hydroxide, Co(OH) 2 , has been widely used as an additive to Ni(OH) 2 in order to improve alkaline secondary batteries [17,18,19], these improvements being attributed to an increase of both ionic and electronic conductivities. Jafarian et al [20] have reported a good oxidation of methanol at glassy carbon electrodes modified with cobalt hydroxide.…”

Section: -Introductionmentioning

confidence: 99%

ELECTROOXIDATION OF 2,4,6-TRICHLOROPHENOL ON GLASSY CARBON ELECTRODES MODIFIED WITH COMPOSITE Ni(OH)2-Co(OH)2 FILMS

González¹,

Salazar²,

Marco³

et al. 2013

J. Chil. Chem. Soc.

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Glassy carbon electrodes coated with a film of electrodeposited cobalt and nickel hydroxides were prepared in order to determine its activity to the 2,4,6-trichlorophenol (TCP) oxidation. The modified electrodes were characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy and Scan Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS). The results indicate that both hydroxides are homogeneously distributed in the electrode surface. From the viewpoint of electrochemical oxidation of TCP, the presence of cobalt and nickel hydroxides on the electrode surface (i) promotes a more complete oxidation of TCP and (ii) decreases the fouling of the electrode surface in comparison with GC and GC modified with Ni or Co separately. Keywords:Modified electrodes, (Ni-Co) hydroxides, chlorophenol oxidation e-mail: soledad.ureta@usach.cl 1.-INTRODUCTIONWaste from domestic, agricultural and industrial activities such as cellulose treatment and the manufacturing of plastics, adhesives and petrochemicals may pollute watercourses [1]. The widely used halogenated compounds are not amenable to biological degradation, and can accumulate in living organisms, this being the reason why they are used as wood preservatives, antibacterial agents, fungicides, insecticides and herbicides [2,3].Au and Pt show high catalytic activity for the electrooxidation of chlorophenols (CP) over short times, but they are quickly fouled up by small oligomers, generated by the coupling of two phenoxy radicals or by reaction of a radical with unreacted CP molecules [4,5]. Electrodes modified with redox mediators could increase the activity and specificity for a given reaction and avoid fouling [6]. So, glassy carbon (GC) electrodes modified with Co(II) phthalocyanine (CoPc) show higher currents and less fouling in the oxidation of 2-chlorophenol (2-CP) and 4-chlorophenol (4-CP) in 1 M NaOH [7]. Also Alatorre et al. [8] found that GC electrodes modified with electropolymerized nickel complexes showed less fouling in the oxidation of 4-CP and 4-nitrophenol in 1 M NaOH. Our laboratory has some experience in this field [4,5,9,10,11]. The goal is to decrease the oligomerization rate and to promote full oxidation of the phenolic compound.The redox mediator activity in alkaline media of electrodes modified with Ni(II) compounds is due to the quasi reversible properties of the Ni(III)/Ni(II) process [9,10,11],which may be represented as follows [12]:Actually nickel hydroxide can have more than one stable structure [13,14,15]. Van der Ven et al. [16] reported the formation of two types of nickel hydroxide, α -and β-Ni(OH) 2 , and two kinds of nickel oxyhydroxides, α -and γ-NiOOH, which, due to their different structures and degrees of hydration, have different electrochemical properties.Other hydroxide, Co(OH) 2 , has been widely used as an additive to Ni(OH) 2 in order to improve alkaline secondary batteries [17,18,19], these improvements being attributed to an increase of bot...

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Structure and electrochemical properties of nickel hydroxide electrodes with cobalt additives

Cited by 2 publications

References 11 publications

Balancing Cost, Sustainability, and Performance: The Future of Solid-State Electrolytes in Automotive Batteries

Balancing Cost, Sustainability, and Performance: The Future of Solid-State Electrolytes in Automotive Batteries

ELECTROOXIDATION OF 2,4,6-TRICHLOROPHENOL ON GLASSY CARBON ELECTRODES MODIFIED WITH COMPOSITE Ni(OH)2-Co(OH)2 FILMS

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