Electrochemical Behaviors of Zn Anode in Carbonate-based Aqueous Solutions

Abstract

Electrochemical behaviors of Zn in various concentrations of K 2 CO 3 and KOH containing 5 M K 2 CO 3 (M = mol dm −3 ) aqueous solutions (carbonate-based electrolytes) have been investigated. The electrochemical reactions of Zn in diluted K 2 CO 3 and KOH containing 5 M K 2 CO 3 were suppressed while they were activated in concentrated K 2 CO 3 . In the point of view of the ratio of the cathodic charge q c to the anodic q a and Zn oxidation current, 0.5 M KOH containing 5 M K 2 CO 3 showed the best performance among all examined electrolytes. The dendritic growth of Zn was not observed during redox cycles in the carbonate-based electrolytes.

Electrochemical Zinc Ion Capacitors: Fundamentals, Materials, and Systems

“…In the case of zinc anodes, the growth of zinc dendrites has been inhibited by enlarging the electrochemical surface areas by 3D architecture design, [10,85] ion distributor, [86,87] and artificial solid electrolyte interphase. [88] Applying intercalation anodes with low potentials is also favorable for avoiding zinc dendrite growth. [89] In this review, we present the opportunities, challenges, and recent research developments of ZICs.…”

Comparison of the Corrosion Behavior of TiNi Alloys with Martensitic and Austenitic Structures

“…The results of studies of the corrosion characteristics of titanium nickelide are contradictory. Some consider titanium nickelide to be both easy to corrode and resistant to it, comparing its anticorrosion properties with pure titanium [27][28][29]. The work [27] describes the electrochemical behavior and corrosion resistance of titanium nickelide.…”

“…Some consider titanium nickelide to be both easy to corrode and resistant to it, comparing its anticorrosion properties with pure titanium [27][28][29]. The work [27] describes the electrochemical behavior and corrosion resistance of titanium nickelide. In this work, the composition, thickness, structure, and electrical properties of anode films are studied depending on the time of their formation in the active medium.…”

“…Potentiodynamic measurements carried out showed that both components of titanium nickelide alloys are passivated in sulfuric acid. Polarization curves, which were taken in river water of the composition (mg/l: NaHCO3 -300, СaCl2 -50, MgSO4 -50) indicate that only a weak and short-term release of oxygen is possible on pure titanium at a potential of 1.6 V [27], then it is suppressed in parallel with the ongoing anodic oxidation of titanium, leading to a thickening of the oxide film. On the contrary, nickel, due to the presence of chlorides in river water, is difficult to passivate and, at a potential of 0.4-0.5 V, is subjected to pitting corrosion.…”

Preface for the 66th Special Feature “Novel Aspects and Approaches to Experimental Methods for Electrochemistry”

“…He currently serves as the representative of the caretakers of the Kansai Electrochemistry Study Group organized by the Kansai Branch of the Electrochemical Society of Japan. He has published and contributed his papers with coauthors in Electrochemistry during his research experiences, [4][5][6][7][8][9] receiving Excellent Paper Award of ECSJ in 2008. 5 Kazuhiko MATSUMOTO studied chemistry at Kyoto University where he received his PhD degree in 2004.…”