Electrochemical studies of aluminum substituted α-Ni(OH)2 electrodes

Liu, B

doi:10.1016/s0360-3199(99)00026-9

Cited by 26 publications

(5 citation statements)

References 13 publications

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“…Nickel/metal aqueous batteries based on Faradaic reactions of electrode materials, with intrinsically nonflammable and green electrolytes, are among the promising alternative candidates. Several types of electrochemical redox couples have been explored, such as nickel/cadmium, , nickel/zinc, , and nickel/iron. − In almost all of these nickel/metal batteries, α-Ni(OH) 2 /γ-NiOOH is a primary redox system that has been used as the positive electrodes, where α-Ni(OH) 2 allows for 1.6–2.0 exchanged electrons per Ni atom when cycled to γ-NiOOH phase, giving rise to a high theoretical capacity. , However, its poor rate property and short cycling life remain a main drawback because of the poor electrical conductivity and instability of α-Ni(OH) 2 , which can easily transform to β-phase Ni(OH) 2 upon aging in strong alkaline solution. − However, new anode materials with high capacity, good cycling performance, and low cost are apparently desired. Bismuth oxide, when chosen as the negative electrode for Ni/Bi battery, has been demonstrated to show great promise as an electrode material, by its highly reversible redox reaction, outstanding rate capability, and favorable negative working window especially in aqueous electrolyte.…”

Section: Introductionmentioning

confidence: 99%

“…18−20 In almost all of these nickel/ metal batteries, α-Ni(OH) 2 /γ-NiOOH is a primary redox system that has been used as the positive electrodes, where α-Ni(OH) 2 allows for 1.6−2.0 exchanged electrons per Ni atom when cycled to γ-NiOOH phase, giving rise to a high theoretical capacity. 21,22 However, its poor rate property and short cycling life remain a main drawback because of the poor electrical conductivity and instability of α-Ni(OH) 2 , which can easily transform to β-phase Ni(OH) 2 upon aging in strong alkaline solution. 23−26 However, new anode materials with high capacity, good cycling performance, and low cost are apparently desired.…”

Section: Introductionmentioning

confidence: 99%

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Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Guan

et al. 2017

ACS Appl. Mater. Interfaces

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For aqueous nickel/metal batteries, low energy density and poor rate properties are among the limiting factors for their applications, although they are the energy storage systems with high safety, high capacity, and low production cost. Here, we have developed a class of active materials consisting of porous nanoflakes of Ni-Co hydroxides and BiO that are successfully assembled on carbon substrates of carbon cloth/carbon nanofiber 3D network (CC/CNF). The combination of the porous Ni-Co hydroxides/BiO nanoflakes with carbon substrate of 3D network is able to provide a large surface area, excellent conductivity, and promote synergistic effects, as a result of the interaction between the active materials and the carbon matrix. With the porous Ni-Co hydroxides and BiO nanoflakes, the Ni/Bi battery can deliver a high capacity of ∼110 mA h g at a current density of 2 A g. About 80% of its capacity (85 mA h g) can be retained when the current density increases to 20 A g. The full cell can also maintain 93% of the initial capacity after 1000 charge/discharge cycles, showing great potential for Ni/Bi battery.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Guan

et al. 2017

ACS Appl. Mater. Interfaces

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“…Such problem of low charge-discharge cycling stability has long been recognized for rechargeable Ni/Cd and Ni/ MH alkaline batteries, and has been tackled by means of using metal additives such as Co, Ca, Zn and Al [12][13][14][15][16]. Co-additive results in a good electrode material for electrochemical supercapacitors because its oxides and hydroxides exhibit high capacitance, while Cu offers excellent electrical conductivity.…”

Section: Electrode Prepared By Chemical Bath Deposition (Cbd) On Nickmentioning

confidence: 99%

Ternary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storage

Alhebshi

Alshareef

2015

Mater Renew Sustain Energy

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In this project, Ni-Cu-OH and Ni-Co-OH ternary electrodes have been prepared. Different Ni:Cu and Ni:Co ratios were deposited by chemical bath deposition (CBD) at room temperature on carbon microfibers. Since Ni(OH) 2 is notorious for poor cycling stability, the goal of the work was to determine if doping with Cu or Co could improve Ni(OH) 2 cycling stability performance and conductivity against reaction with electrolyte. It is observed that the electrodes with Ni:Cu and Ni:Co composition ratio of 100:10 result in the optimum capacitance and cycling stability in both Ni-Cu-OH and Ni-Co-OH electrodes. This improvement in cycling stability can be attributed to the higher redox reversibility as indicated by the smaller CV redox peak separation. In addition, it is found that decreasing Cu and Co ratios, with fixed CBD time, enhances nanoflakes formation, and hence increases electrode capacitance. For the optimum composition (Ni:Co = 100:10), composites of the ternary electrodes with graphene and carbon nanofibers were also tested, with resultant improvement in potential window, equivalent series resistance, areal capacitance and cycling stability.

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“…As has been reported [74 -77], nickel hydroxide may generally exist in two different crystallographic forms designed aNi(OH) 2 and b-Ni(OH) 2 which are hydrous and anhydrous, respectively. In addition [77,78], the oxidation of nickel hydroxide gives two other varieties of oxyhydroxides, b and g, which explains the existence of the two reduction peaks during the backward sweep. The a-form is known to be unstable, and when a-Ni(OH) 2 is formed at the initial stage of electrooxidation of the Ni electrode, it is further slowly converted to the b-Ni(OH) 2 .…”

Section: Incorporation Of Ni(ii) Ions Into Poly(m-toluidine) Filmmentioning

confidence: 99%

Electrocatalytic Oxidation of Hydrogen Peroxide on Poly(m‐toluidine)‐Nickel Modified Carbon Paste Electrode in Alkaline Medium

2010

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The poly(m-toluidine) film was prepared by using the repeated potential cycling technique in an acidic solution at the surface of carbon paste electrode. Then transition metal ions of Ni(II) were incorporated to the polymer by immersion of the modified electrode in a 0.2 M NiSO 4 , also the electrochemical characterization of this modified electrode exhibits stable redox behavior of the Ni(III)/Ni(II) couple. The electrocatalytic ability of Ni(II)/poly(m-toluidine)/ modified carbon paste electrode (Ni/PMT/MCPE) was demonstrated by electrocatalytic oxidation of hydrogen peroxide with cyclic voltammetry and chronoamperometry methods in the alkaline solution. The effects of scan rate and hydrogen peroxide concentration on the anodic peak height of hydrogen peroxide oxidation were also investigated. The catalytic oxidation peak current showed two linear ranges with different slopes dependent on the hydrogen peroxide concentration and the lower detection limit was 6.5 mM (S/N ¼ 3). The catalytic reaction rate constant, (k h ), was calculated 5.5 Â 10 2 M À1 s À1 by the data of chronoamperometry. This modified electrode has many advantages such as simple preparation procedure, good reproducibility and high catalytic activity toward the hydrogen peroxide oxidation. This method was also applied as a simple method for routine control and can be employed directly without any pretreatment or separation for analysis cosmetics products.

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Electrochemical studies of aluminum substituted α-Ni(OH)2 electrodes

Cited by 26 publications

References 13 publications

Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Ternary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storage

Electrocatalytic Oxidation of Hydrogen Peroxide on Poly(m‐toluidine)‐Nickel Modified Carbon Paste Electrode in Alkaline Medium

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Electrochemical studies of aluminum substituted α-Ni(OH)2 electrodes

Cited by 26 publications

References 13 publications

Nanoflakes of Ni–Co LDH and Bi2O3 Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Nanoflakes of Ni–Co LDH and Bi2O3 Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Ternary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storage

Electrocatalytic Oxidation of Hydrogen Peroxide on Poly(m‐toluidine)‐Nickel Modified Carbon Paste Electrode in Alkaline Medium

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Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery

Nanoflakes of Ni–Co LDH and Bi₂O₃ Assembled in 3D Carbon Fiber Network for High-Performance Aqueous Rechargeable Ni/Bi Battery