Electromechanical Writing on Silver Ion Conductors

Spangenberg, A.; Fleig, Jürgen; Maier, Joachim

doi:10.1002/1521-4095(200110)13:19<1466::aid-adma1466>3.0.co;2-#

Cited by 29 publications

(14 citation statements)

References 2 publications

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“…Summarizing, we find that cathodic deposition of silver on AgBr at extended electrodes at a temperature of T = 300°C leads rather to the growth of whisker arrays or fields than to fractal or dendritic surface morphologies as reported by Spangenberg et al [1] for AgCl. Whether this is due to a different surface chemistry of AgCl and AgBr is yet not clear.…”

Section: Discussionsupporting

confidence: 76%

“…In contrast to the Fig. 1 Experimental setup (schematical) for the electrochemical growth of silver whiskers and SEM graph of silver whisker array grown electrochemically on AgBr whisker growth on AgBr, the metal is always deposited in a dendritic morphology on AgCl, as exemplified by Spangenberg et al [1]. Thus, we mainly used AgBr as the solid electrolyte substrate for whisker growth.…”

Section: Influence Of Substratementioning

confidence: 99%

“…In this context first attempts to apply solid state electrochemical techniques have recently been reported by Spangenberg et al [1] using microelectrodes and by Terabe et al [2] using scanning tunneling microscope (STM). It is the purpose of this paper to report on first attempts to apply the electrochemically controlled whisker growth on solid electrolytes as a route towards the preparation of metal microwires and microwire arrays.…”

Section: Introductionmentioning

confidence: 99%

“…Both the corresponding anodic and cathodic phenomena in solid electrolytes are by far less investigated. In particular, the cathodic deposition of metals on solid electrolytes is not well understood, as Spangenberg et al [1] pointed out. Mechanical effects, related to the elastic and plastic deformation of the solid phases, and thus, to the presence of non-equilibrium defects (mainly dislocations) play a decisive role for metal dissolution or growth in or on a solid electrolyte [7], compared to their less significant role in liquid state processes.…”

Section: Introductionmentioning

confidence: 99%

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Controlled electrochemical growth of silver microwires

Rohnke

Best

Janek

2005

J Solid State Electrochem

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The cathodic deposition of silver whiskers as microwires in the electrochemical cell Ag/AgBr/Ag has been investigated. From growth experiments observed with an optical microscope, we conclude that the growth process occurs exclusively at the interface of the silver wires with the solid electrolyte. The basal contacts of the microwires show different morphologies without clear correlation to the substrate. The silver crystals often show a hexagonal morphology, but XRD gives no definite information on the structure of the wires. The measured exchange current density is in the order of 100 mA/cm 2 . The growth rate and the diameter of the microwires can be controlled by variation of the current.

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Section: Discussionsupporting

confidence: 76%

Section: Influence Of Substratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controlled electrochemical growth of silver microwires

Rohnke

Best

Janek

2005

J Solid State Electrochem

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“…However, to be noted is that AgCl is known to have a limited electron conductivity, together with a limited ionic conductivity (e.g., for Ag ? and Cl -ions, [43]. This will impede a subsequent growth of AgCl on the Ag surface, once a layer of a certain thickness had already developed.…”

Section: Testsmentioning

confidence: 99%

Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

et al. 2018

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Characterization of the Ag/AgCl electrode is a necessary step toward its application as a chloride sensor in a highly alkaline medium, such as concrete. The nucleation and growth of AgCl on Ag in 0.1 M HCl was verified through cyclic voltammetry. Ag anodization was performed at current densities, determined by potentiodynamic polarization in the same (0.1 M HCl) medium. The morphology and microstructure of the AgCl layers were evaluated via electron microscopy, while surface chemistry was studied through energy-dispersive spectroscopy and X-ray photoelectron spectroscopy. At current density above 2 mA/cm 2 , the thickness and heterogeneity of the AgCl layer increased. In this condition, small AgCl particles formed in the immediate vicinity of the Ag substrate, subsequently weakening the bond strength of the Ag/AgCl interface. Silver oxide-based or carbon-based impurities were present on the surface of the sensor in amounts proportional to the thickness and heterogeneity of the AgCl layer. It is concluded that a well-defined link exists between the properties of the AgCl layer, the applied current density and the recorded overpotential during Ag anodization. The results can be used as a recommendation for preparation of chloride sensors with stable performance in cementitious materials.

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Enhancing the Dendrite Tolerance of NaSICON Electrolytes by Suppressing Edge Growth of Na Electrode along Ceramic Surface

Ortmann

Yang

et al. 2022

Advanced Energy Materials

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Solid‐state sodium batteries (SSNBs) have attracted extensive interest due to their high safety on the cell level, abundant material resources, and low cost. One of the major challenges in the development of SSNBs is the suppression of sodium dendrites during electrochemical cycling. The solid electrolyte Na3.4Zr2Si2.4P0.6O12 (NZSP) exhibits one of the best dendrite tolerances of all reported solid electrolytes (SEs), while it also shows interesting dendrite growth along the surface of NZSP rather than through the ceramic. Operando investigations and in situ scanning electron microscopy microelectrode experiments are conducted to reveal the Na plating mechanism. By blocking the surface from atmosphere access with a sodium‐salt coating, surface‐dendrite formation is prevented. The dendrite tolerance of Na | NZSP | Na symmetric cells is then increased to a critical current density (CCD) of 14 mA cm−2 and galvanostatic cycling of 1 mA cm−2 and 1 mAh cm−2 (half cycle) is demonstrated for more than 1000 h. Even if the current density is increased to 3 mA cm−2 or 5 mA cm−2, symmetric cells can still be operated for 180 h or 12 h, respectively.

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Electromechanical Writing on Silver Ion Conductors

Cited by 29 publications

References 2 publications

Controlled electrochemical growth of silver microwires

Controlled electrochemical growth of silver microwires

Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

Enhancing the Dendrite Tolerance of NaSICON Electrolytes by Suppressing Edge Growth of Na Electrode along Ceramic Surface

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