SECONDARY BATTERIES – NICKEL SYSTEMS | Nickel–Cadmium: Overview

Shukla, Ashok; Venugopalan, S.; Hariprakash, B.

doi:10.1016/b978-044452745-5.00153-2

Cited by 45 publications

(42 citation statements)

References 12 publications

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“…It was prepared by arc melting stoichiometric amounts of the constituent metals in a water-cooled copper crucible under argon atmosphere. [33][34][35][36][37][38] The alloy ingots were mechanically pulverized to fine powders before use in DBFCs.…”

Section: Preparation Of Ab 5 Alloymentioning

confidence: 99%

Poly (vinyl alcohol) hydrogel membrane as electrolyte for direct borohydride fuel cells

et al. 2009

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A direct borohydride fuel cell (DBFC) employing a poly (vinyl alcohol) hydrogel membrane electrolyte (PHME) is reported. The DBFC employs an AB 5 Misch metal alloy as anode and a goldplated stainless steel mesh as cathode in conjunction with aqueous alkaline solution of sodium borohydride as fuel and aqueous acidified solution of hydrogen peroxide as oxidant. Room temperature performances of the PHME-based DBFC in respect of peak power outputs; ex-situ cross-over of oxidant, fuel, anolyte and catholyte across the membrane electrolytes; utilization efficiencies of fuel and oxidant, as also cell performance durability are compared with a similar DBFC employing a Nafion ® -117 membrane electrolyte (NME). Peak power densities of ~30 and ~40 mW cm -2 are observed for the DBFCs with PHME and NME, respectively. The crossover of NaBH 4 across both the membranes has been found to be very low. The utilization efficiencies of NaBH 4 and H 2 O 2 are found to be ~24 and ~59%, respectively for the PHME-based DBFC; ~18 and ~62%, respectively for the NME-based DBFC. The PHME and NME-based DBFCs exhibit operational cell potentials of ~1⋅2 and ~1⋅4 V, respectively at a load current density of 10 mA cm -2 for ~100 h.

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Section: Preparation Of Ab 5 Alloymentioning

confidence: 99%

Poly (vinyl alcohol) hydrogel membrane as electrolyte for direct borohydride fuel cells

et al. 2009

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“…Actually, real nickel hydroxide has structural disorder and always deviates from its ideal crystal structure, geometric symmetry, and bonding between layers [3,4]. Generally, nickel hydroxide exists in two different polymorphic forms, i.e., α-nickel hydroxide and β-nickel hydroxide, which are transformed into γ-nickel oxyhydroxide and β-nickel oxyhydroxide, respectively, on charging [5]. The α-nickel hydroxide is a hydrated version of β-nickel hydroxide with the incorporation of water molecules and anions for charge neutrality and structural stability [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of synthesis temperature on the phase structure and electrochemical performance of nickel hydroxide

Yang

Yao

et al. 2009

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Nickel hydroxide powder is prepared by chemical precipitation method, and the effect of synthesis temperature on the phase structure and electrochemical performances of nickel hydroxide is investigated. The phase structure is characterized by X-ray diffraction (XRD), and the electrochemical performances are characterized by cyclic voltammetry, electrochemical impedance spectroscopy, and charge/discharge tests. The XRD results show that low temperatures (0-20°C) induce the precipitation of badly crystallized nickel hydroxide while at high temperatures (40-60°C) crystallized β-nickel hydroxide is formed. Electrochemical performance tests show that the nickel hydroxide synthesized at low temperature has better electrochemical reversibility, lower electrochemical reaction impedance, and higher discharge capacity than that of the nickel hydroxide synthesized at high temperature.

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“…Nickel-based rechargeable batteries employ nickel oxide electrodes as the positive plates [1], including nickel-iron (Ni-Fe) [2,3], nickel-cadmium (Ni-Cd) [4][5][6], nickel-hydrogen (Ni-H 2 ) [7,8], nickel-metal hydride (Ni-MH) [9][10][11][12] and nickel-zinc (Ni-Zn) [13,14] batteries. The Ni-Cd and Ni-MH batteries were used widely.…”

Section: Introductionmentioning

confidence: 99%