Investigation of the process of thermal runaway in nickel–cadmium accumulators

Галушкин, Д. Н.; Yazvinskaya, Nataliya N.; Galushkin, Nikolay E.

doi:10.1016/j.jpowsour.2007.11.090

Cited by 29 publications

(42 citation statements)

References 9 publications

(14 reference statements)

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“…A significant contribution to the development of transient electrolysis as a research area of technical electrochemistry was made at the Novocherkassk electrochemical school [72][73][74][75][76][77][78][79][80][81].…”

Section: Introductionmentioning

confidence: 99%

The use of transient electrolysis in the technology of oxide composite nanostructured materials: review

Bespalova¹,

Храменкова²

2016

Nanosystems: Phys. Chem. Math.

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The available experimental material relating to the patterns of formation and properties of functional nanostructured transition metal oxide (Mo, Co, Mn, Ni, Fe, V) composite materials is reviewed. Advanced coatings are considered those whose formation method are simple and do not require high energy costs, expensive equipment and permit the creation of materials with desired physical and chemical properties in a specified manner. In this review, the priority of oxide composite nanostructured materials technology is given to a transient electrolysis method based on the analysis of a data set that demonstrates its advantages. The results are presented for a number of studies aimed at identifying and analyzing the nature and regularities of processes that take place when obtaining oxide composite nanostructured materials using transient electrolysis methods.

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Section: Introductionmentioning

confidence: 99%

The use of transient electrolysis in the technology of oxide composite nanostructured materials: review

Bespalova¹,

Храменкова²

2016

Nanosystems: Phys. Chem. Math.

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“…In our previous papers, [2][3][4][5][6][7] it was shown that a lot of experimental data exists that contradict to the generally accepted thermal runaway mechanism.…”

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confidence: 99%

“…So the thermal runaway classical mechanism supposes that the reason for the thermal runaway is an acceleration of a battery charge reactions (on expense of its heating-up) Ni(OH) 2 [4] as the thermal runaway takes place in cases of a long-time battery recharging. In our previous papers, [2][3][4][5][6][7] it was shown that a lot of experimental data exists that contradict to the generally accepted thermal runaway mechanism.…”

mentioning

confidence: 99%

“…Therefore at the thermal runaway from the battery, there can be released a steam and a small amount of hydrogen and oxygen in proportion 2:1. But the experimental measures 2 show that as a result of a thermal runaway from a battery, there are released a steam (in amount approximately equal to an amount of an electrolyte in the battery) and a gas (95 to 97% of which is represented by the hydrogen). For example, at the thermal runaway from the battery KSX-25 (with sintered electrodes by capacity 25 Ah), approximately 270 liters hydrogen and 14 liters oxygen are released.…”

mentioning

confidence: 99%

“…For example, at the thermal runaway from the battery KSX-25 (with sintered electrodes by capacity 25 Ah), approximately 270 liters hydrogen and 14 liters oxygen are released. 2 Notably that the released hydrogen amount exceeds its amount in the whole electrolyte if the latter would be decompounded on hydrogen and oxygen.…”

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confidence: 99%

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Study of Thermal Runaway Electrochemical Reactions in Alkaline Batteries

Galushkin

Yazvinskaya

Галушкин

2015

J. Electrochem. Soc.

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In this investigation, there was deduced from experiments that an exothermic reaction in the thermal runaway process in alkaline batteries is the electrochemical reaction of atomic hydrogen recombination Hads Cd + Hads Ni → H2↑(H2O + Hads + e- → H2↑ + OH- on a cathode and Hads + OH- → H2O + e- on an anode). A rate-limiting step for this reaction on both a cathode and an anode is found to be a step of metal-hydrides disintegration. This electrochemical reaction proceeds at voltage 0.5–0.6 V on battery terminals according to experimental data on the thermal runaway. The possible thermal runaway mechanism has been proposed corresponding to all the experimental results obtained.

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