Construction of Multicomponent Pourbaix Diagrams Using Generalized Species

Rojas-Hernándéz, Alberto; Ramírez, Ma. Teresa García; Ibáñez, Jorge G.; González, Ignacio

doi:10.1149/1.2085590

Cited by 57 publications

(36 citation statements)

References 10 publications

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“…Clark, et al, recently presented a framework for predicting the discharge characteristics of a Zn-air cell with an aqueous near-neutral electrolyte based on equilibrium thermodynamic considerations [3], and showed how they can be incorporated into a dynamic model. Models of equilibrium thermodynamics can also be used to generate potential-pH, or Pourbaix, diagrams [115]. Figure 3b shows a simplified example for the aqueous Zn system.…”

Section: Electrolytesmentioning

confidence: 99%

A Review of Model-Based Design Tools for Metal-Air Batteries

2018

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Abstract:The advent of large-scale renewable energy generation and electric mobility is driving a growing need for new electrochemical energy storage systems. Metal-air batteries, particularly zinc-air, are a promising technology that could help address this need. While experimental research is essential, it can also be expensive and time consuming. The utilization of well-developed theory-based models can improve researchers' understanding of complex electrochemical systems, guide development, and more efficiently utilize experimental resources. In this paper, we review the current state of metal-air batteries and the modeling methods that can be implemented to advance their development. Microscopic and macroscopic modeling methods are discussed with a focus on continuum modeling derived from non-equilibrium thermodynamics. An applied example of zinc-air battery engineering is presented.

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Section: Electrolytesmentioning

confidence: 99%

A Review of Model-Based Design Tools for Metal-Air Batteries

2018

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“…Observe at direct scan, the formation of a peak A at -0.860 V. During the inverse of the potential scan, it is possible to observe the crossover, E C1 (-0.790 V) which is typical of the formation of a new phase involving a nucleation process 11 . Sometimes, the second crossoverpotential E C2 (-0.360 V) may be associated to the thermodynamical potential of M n+ /M, only when E C2 is independent of the switch potential E l and when E l is less negative than the corresponding peak potential 12 . However, this was not the case for the E C2 analyzed in this work.…”

Section: Voltammetric Studymentioning

confidence: 99%

“…In order to calculate the value of Gibbs free energy of nucleation from experimental transients, an ln A vs. η -2 plot can be constructed according to Eq. (10), and then from the slope k 4 of the observed linear relationship, ΔG could be calculated at each particular overpotential by using the next equation: (12) 24,25 . Figure 6 shows the SEM micrographs of cobalt deposits when a potential of -1350 mV was applied onto the SSE-304 surface during 192 s. From this figure it can be observed granular deposits, Figure 6a.…”

Section: Analysis Of the Kinetic Parametersmentioning

confidence: 99%

Cobalt Electrodeposition Onto Stainless Steel 304 From Ammoniacal Solutions

Ramos-Lora

Mendoza-Huízar

Reyes

2011

J. Chil. Chem. Soc.

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In this work we studied the cobalt electrodeposition onto a stainless steel 304 electrode from an aqueous solution containing 10 -1 M of CoSO 4 + 1M (NH 4 ) 2 SO 4 at natural pH of 4.5. Black cobalt deposits were obtained under our experimental conditions. The average diffusion coefficient calculated was 9.8X10 -6 cm 2 s -1 while the ∆G for the formation of stable nucleus was 1.013X10-20 J/nuclei. The critical cluster´s size calculated was 0 which suggested that each active site is a critical nucleus on the SSE-304 surface. The Scanning Electron Microscopy images showed the formation of non-uniform cobalt particles.

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“…According to the model proposed by Rojas-Hernandez et al [16], if [SO 2À 4 ] < 0.1 %, the thermodynamically favored corrosion process is:…”

Section: Mechanisms Of Corrosion With Many Ions In Some Riversmentioning

confidence: 99%

The cavitation erosion and erosion‐corrosion behavior of carbon steel in simulating solutions of three rivers of China

Zheng

Yao

2006

Materials & Corrosion

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The corrosion behaviour of the Q235 carbon steel in simulation solution of Yangtze, Yellow and Talimu river of China was investigated by mass loss, electrochemical measurements (polarization curves, linear polarization resistance and electrochemical impedance spectroscopy) and the damaged surfaces were observed by a scanning electron microscope (SEM) under static, cavitation erosion and erosion-corrosion conditions. It was shown that under static condition, the E corr was almost the same in the three solutions but the anodic current density in Talimu river was about one order of magnitude larger than that in Yangtze and Yellow river. Under dynamic conditions including cavitation erosion and erosion-corrosion, the E corr in the three solutions all shifted in positive direction from that under static condition, but the extent of DE corr increased in the order of Yangtze, Yellow and Talimu river. The corrosion rate under dynamic conditions greatly enhanced, especially in Talimu river. It was confirmed that the corrosion played an important role in the synergistic effect under cavitation erosion and erosion-corrosion conditions. The test results suggested that when the structure materials used in the different rivers were chosen, the difference of corrosiveness of the rivers must be taken into account, especially under dynamic conditions. The materials used in the aggressive rivers such as Talimu river under dynamic conditions must resist the synergistic effects between erosion and corrosion.

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Construction of Multicomponent Pourbaix Diagrams Using Generalized Species

Cited by 57 publications

References 10 publications

A Review of Model-Based Design Tools for Metal-Air Batteries

A Review of Model-Based Design Tools for Metal-Air Batteries

Cobalt Electrodeposition Onto Stainless Steel 304 From Ammoniacal Solutions

The cavitation erosion and erosion‐corrosion behavior of carbon steel in simulating solutions of three rivers of China

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