Electrochemical Oscillations during Electro-oxidation of Copper Anode in Phosphoric Acid Solution

Ding, Lifeng; Wu, Peng; Cheng, Jinrong; Niu, Yulan; Song, Zhengwei; Kong, Xiangpeng

doi:10.5796/electrochemistry.18-00002

Cited by 10 publications

(4 citation statements)

References 35 publications

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“…1b, curves 2 and 3) appear on the curves at the ratio of H 3 PO 4 :H 2 O = 1:2 and lower. 27 The polarization dependence of copper in the phosphate butanol solution at the ratio of C 4 H 9 OН:H 3 PO 4 = 1:1 is characterized by the availability of an explicit peak, which separates the regions of the active and passive states of copper (Fig. 1a, curve 1).…”

Section: Resultsmentioning

confidence: 99%

Preparation and Purification of a Flame-Retardant Polyphenylphosphonate Containing 4,4'-Dihydroxybenzophenone

Possenti¹,

Souza²,

Battisti³

et al. 2022

ChChT

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Section: Resultsmentioning

confidence: 99%

Preparation and Purification of a Flame-Retardant Polyphenylphosphonate Containing 4,4'-Dihydroxybenzophenone

Possenti¹,

Souza²,

Battisti³

et al. 2022

ChChT

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show abstract

Section: Resultsmentioning

confidence: 99%

“…At the same time, we selected another H 3 PO 4 -based copper etchant (Cu Etch-N1) for testing. The etching rate of the etchant of Cu Etch-N1 is at 25 °C for 0.375 μm/min, in which the mechanism of redox is as follows 21 Cu Early work on the etching rate of amorphous titanium oxide (TiO 2 ) in phosphoric acid was done by Okazaki et al 22 The etching rate is of approximately 1 nm/min with the immersion test of the TiO 2 film in 85% by weight H 3 PO 4 at 80 °C. 23 In the previous study, the etching rate of TiO 2 was dependent on the concentration and temperature of H 3 PO 4 .…”

Section: Cumentioning

confidence: 99%

Development of a Lightweight LTO/Cu Electrode as a Flexible AnodeviaEtching Process for Lithium-Ion Batteries

et al. 2022

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In recent years, flexible energy storage devices have attracted the growing demand for flexible electronic systems. Therefore, research on reliable electrodes with high mechanical flexibility and good electronic and lithium-ion conductivity has become critical. Carbon-coated Li 4 Ti 5 O 12 (LTO) nanostructures find essential applications in high-performance lithium-ion batteries (LiBs). Nevertheless, the conventional copper current collector with a thickness of several micrometers accounts for a large proportion of the LiB, making the low-energy density LiB with much less flexibility. Here, hundred nm-thick (LTO/Cu) copper foil–LTO nanostructures are fabricated using a scalable and straightforward process which can be assembled into a film into a flexible, lightweight electrode by etching a conventional copper foil to form an ultra-thin copper layer for LIBs (<1 μm). This process provides essential flexibility to the as-prepared electrode and provides template support for simple fabrication. The LiB cell using the novel LTO/Cu as the anode exhibits an energy capacity of 123 mA h/g during 40 charge–discharge cycles at a 0.1C rate. Besides, the coulombic efficiency of the LiB using LTO/Cu remains over 99% after 40 cycles. These results show the uses of this novel anode and its potential in high-density and flexible commercial lithium-ion batteries.

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“…For example, various metals exhibit current or potential oscillations when dissolved under appropriate conditions. [17][18][19][20][21][22][23][24][25][26][27][28] In general, an N-shaped negative differential resistance (N-NDR) plays a crucial role in the appearance of oscillations because it results in oscillatory instability. 15,16,29,30 Most oscillations can be classified as N-NDR or "hidden" N-NDR (HN-NDR) oscillators.…”

mentioning

confidence: 99%

Corrosion Potential Oscillation of Iron Electrodes in Nitric Acid

Sato,

Kuge,

Nakanishi

et al. 2023

J. Electrochem. Soc.

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Although iron dissolves in diluted nitric acid solutions, it does not dissolve in concentrated solutions because of surface passivation. When a small amount of water is added to a concentrated solution, the dissolution and passivation of iron occur alternately, and the amount of gaseous products generated by nitric acid reduction varies in an oscillatory manner. During the corrosion process, the corrosion potential of iron oscillates spontaneously. In this study, we investigated the factors that cause oscillations in corrosion potential through electrochemical measurements using a three-electrode system and numerical simulations. The study revealed that an N-shaped negative differential resistance characteristic of iron oxidation plays a vital role in the oscillation of the corrosion potential and, simultaneously, the reduction of nitric acid results in oscillation. We considered metal corrosion has essential factors resulting in oscillatory instability. Thus, the corrosion potentials of various metals are expected to oscillate spontaneously under the appropriate conditions.

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Electrochemical Oscillations during Electro-oxidation of Copper Anode in Phosphoric Acid Solution

Cited by 10 publications

References 35 publications

Preparation and Purification of a Flame-Retardant Polyphenylphosphonate Containing 4,4'-Dihydroxybenzophenone

Preparation and Purification of a Flame-Retardant Polyphenylphosphonate Containing 4,4'-Dihydroxybenzophenone

Development of a Lightweight LTO/Cu Electrode as a Flexible AnodeviaEtching Process for Lithium-Ion Batteries

Corrosion Potential Oscillation of Iron Electrodes in Nitric Acid

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