Corrosion Chemistry

Çiçek, Volkan; Al‐Numan, Bayan

doi:10.1002/9781118232163

Cited by 24 publications

(17 citation statements)

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“…A current flow from the metal with lower standard electrode potential (anode) to the metal with higher standard electrode potential (cathode) leads to the increased corrosion of the anode, while preventing the cathode from oxidation. [ 13 ]…”

Section: Resultsmentioning

confidence: 99%

“…Corrosion, in general, is defined as the chemical or electrochemical reaction between a material and its environment that results in a deterioration of the material and its properties. [ 13 ] As energy storage and conversion systems imply materials in a thermodynamically non‐equilibrium state, corrosion‐related processes are highly relevant for such systems. Figure 1 a presents an overview of possible corrosion‐related phenomena in a battery cell.…”

Section: Introductionmentioning

confidence: 99%

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Galvanic Corrosion of Lithium‐Powder‐Based Electrodes

Kolesnikov

Kolek

Dohmann

et al. 2020

Advanced Energy Materials

127

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for anode materials to replace graphite [3] in lithium batteries. The application of thin lithium foils is considered to enable an increase in energy density by nearly a factor of 2 in case of solid-state lithium metal batteries (SSLMBs). [4] Besides LIB-derived cathode materials, lithium anodes are often considered for conversion-type cathodes enabling S 8 ||Li and O 2 ||Li batteries as well. [5] Nevertheless, lithium as anode material in rechargeable batteries has been extensively studied over four decades [6] and still no commercial application could be realized. [7] Major challenges concern the safety and uncontrolled lithium electrodeposition that often leads to the formation of high surface area lithium (HSAL), frequently called "dendrites." The high reactivity of pristine lithium and especially electrodeposited lithium leads to severe side reactions with electrolytes which result in the formation of a solid electrolyte interphase (SEI). [8] This SEI, however, is fractured during consecutive lithium electrodeposition and electrodissolution resulting in an inhomogeneous interphase on the lithium surface. These inhomogeneities can cause uncontrolled lithium electrodeposition and the formation of HSAL deposits. [9] Such deposits can occur in needle-like ( = dendritic) morphology and puncture the separator. After growing to the cathode, an internal short-circuit may be caused which dramatically increases the risk of a thermal runaway. To overcome the described issues, various approaches were developed based on electrolyte and lithium anode interphase engineering, [10] minimizing volume changes by using stable hosts, [11] and preventing dendrite formation and propagation by the use of solid-state electrolytes. [12] The stability of materials in contact with its environment is a well-known research area for corrosion science. Corrosion, in general, is defined as the chemical or electrochemical reaction between a material and its environment that results in a deterioration of the material and its properties. [13] As energy storage and conversion systems imply materials in a thermodynamically non-equilibrium state, corrosion-related processes are highly relevant for such systems. Figure 1a presents an overview of possible corrosion-related phenomena in a battery cell. Herein, we only discuss corrosion phenomena which occur in the presence of an electrolyte.At the positive electrode side, dissolution of Al, [14] which is typically used as a positive electrode current collector, and the cathode electrolyte interphase (CEI) [15] formation are phenomena related to corrosion in a battery cell (Figure 1b-d). One of the two processes which leads to dissolution of Al is Lithium metal is considered to be the most promising anode for the next generation of batteries if the issues related to safety and low coulombic efficiency can be overcome. It is known that the initial morphology of the lithium metal anode has a great influence on the cycling characteristics of a lithium metal battery (LMB). Lithium-powder-based el...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Galvanic Corrosion of Lithium‐Powder‐Based Electrodes

Kolesnikov

Kolek

Dohmann

et al. 2020

Advanced Energy Materials

127

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“…[25]. Korozyonda, suyun kimyası, sudaki katkı maddeleri, malzeme seçimi ve mikrobiyoloji çok önemli bir rol oynar [24].…”

Section: Korozyonunclassified

Endüstriyel Sistemlerde Mikrobiyolojik Korozyon ve Önlenmesi

Güngör¹

2014

Nevşehir Bilim Ve Teknoloji Dergisi

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Mikrobiyolojik korozyon (MIC) mikroorganizmalar tarafından oluşturulan korozyon sürecidir. MIC organik ve inorganik asitler ile metallerin bozunmasına neden olur ve bu yüzden endüstriyel ve diğer sistemlerin yapı bütünlüğünü tehlikeye atarak dünya çapında önemli bir sorun yaratır. Metalik yapıların yüzeyinde meydana gelen kompleks biyolojik ve inorganik süreçlerin doğru bir şekilde anlaşılması MIC'un önlenmesi ve koruma için etkili uygulamalar gerçekleştirmek için gereklidir. Ayrıca bu durum onarım maliyetlerini en aza indirmek için uygun bir strateji geliştirmemize yardımcı olacaktır. Bu derleme endüstriyel sistemlerde kullanılan metal yüzeylerde biyofilm oluşumu, mikrobiyolojik korozyon ve buna neden olan mikroorganizmaların tanımlanması ve sistemlerdeki bu oluşumların engellenmesi için doğru stratejilerin nasıl belirlenebileceğine dair öneriler içermektedir.Anahtar Kelimeler: Biyofilm, Mikrobiyolojik korozyon, Metal, Korozyonun önlenmesi Microbial Corrosion and Prevention in Industrial Systems AbstractMicrobial corrosion (MIC) is corrosion process enhanced by microorganism. MIC causes deterioration of metals by organic and inorganic acids and thus compromise the integrity of industrial and other systems structures, creating significant problems worldwide. A proper understanding of the complex biological and inorganic processes occurring at the surface of metallic structures is needed to carry out effective treatments for MIC prevention and protection. Besides this situation will help us develop an appropriate strategy to minimize the costs in repairs. This review contains biofilm formation on metal surface used in industrial systems, microbial corrosion and identification of microorganisms that cause it, and in the systems for the prevention of the formation with suggestions for how to determine the right strategy.

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“…They include potasium (K + ), chloride (Cl -), sodium (Na + ), sulphate (SO 4 2-), magnesium (Mg 2+ ), and calcium (Ca 2+ ). These are present in higher concentrations in seawater than in freshwater [1].…”

Section: Introductionmentioning

confidence: 96%

Effect of Anions in Seawater to Corrosion Attack on Passive Alloys

Ismail¹

2013

IJRET

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Some metals and alloys have special characteristics that enable them to provide superior corrosion-resistant metal surfaces. These protective passive films are responsible for the phenomenon of passivity. Metals with this characteristic can be categorized as passive materials such as stainless steel 316L and nickel alloy Inconel 625. However, in corrosive environment this protective passive film may breach and exposed bare metal for further corrosion attack. Corrosive environment can be refer as metal is susceptible to corrosion attack such as seawater which contain aggressive ions (salt) with negative charge (anion). An electrochemical test has been carried out to determine the effect of anion on corrosion attack of 316L and Inconel 625. The objective is to identify the breakdown potential (E b ) in different anion ratio (chloride (Cl -) : sulphate(SO 4 2-). The anions concentration was decided as Cl 35:0, 25:10, 10:25, 0:35 and was compared to artificial seawater, 3.5% NaCl. The pH values were set in neutral in static condition. The materials were run for cyclic polarization with a scan rate of 2mV/sec. The E b value for 316L decreased in every solution as the temperature increased from 30°C to 80°C. The results explain that SO 4 2has inhibiting effect to passive alloy showing that the highest E b value detect at 30°C and highest concentration of SO 4 2-. Optical observations elucidate that, the number of pits increased in high concentration of Clthan SO 4 2-. Both materials presents pits reducing as the temperature and concentration of SO 4 2ions increased. Nevertheless, the E b value for 316L is likely to has a competition effect between Cland SO 4 2anion as the graph shows no significant effect at Cl -: SO 4 2-,25:10, 10:25. The same scenario is not shown by Inconel 625 because this metal is highly corrosion resistance compared to 316L.

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Corrosion Chemistry

Cited by 24 publications

References 0 publications

Galvanic Corrosion of Lithium‐Powder‐Based Electrodes

Galvanic Corrosion of Lithium‐Powder‐Based Electrodes

Endüstriyel Sistemlerde Mikrobiyolojik Korozyon ve Önlenmesi

Effect of Anions in Seawater to Corrosion Attack on Passive Alloys

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