Advances on scanning electrochemical microscopy (SECM) for energy

Bertoncello, Paolo

doi:10.1039/c0ee00046a

Cited by 106 publications

(72 citation statements)

References 184 publications

(208 reference statements)

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“…This extends the growing trend of using SECM techniques to answer questions pertaining to battery materials and to energy applications at micron or greater length scales (Bertoncello, 2010;Lai et al, 2012;Bülter et al, 2014;Zampardi et al, 2015a,b). Furthermore, two recent papers describe the use of SECM to characterize solid electrolyte interfaces in batteries (Bülter et al, 2015;Ventosa et al, 2015).…”

supporting

confidence: 55%

Intermittent Contact Alternating Current Scanning Electrochemical Microscopy: A Method for Mapping Conductivities in Solid Li Ion Conducting Electrolyte Samples

et al. 2016

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Intermittent contact alternating current scanning electrochemical microscopy (ic-ac-SECM) has been used to determine the electrochemical response to an ac signal of several types of materials. A conductive gold foil and insulating Teflon sheet were first used to demonstrate that the intermittent contact function allows the topography and conductivity to be mapped simultaneously and independently in a single experiment. Then, a dense pellet of an electronically insulating but Li ion conducting garnet phase, Al-substituted Li7La3Zr2O12 (LLZO), was characterized using the same technique. The polycrystalline pellet was prepared by classical ceramic sintering techniques and was comprised of large (~150 μm) grains. Critical information regarding the contributions of grain and grain boundary resistances to the total conductivity of the garnet phase was lacking due to ambiguities in the impedance data. In contrast, the use of the ic-ac-SECM technique allowed spatially resolved information regarding local conductivities to be measured directly. Impedance mapping of the pellet showed that the grain boundary resistance, while generally higher than that of grains, varied considerably, revealing the complex nature of the LLZO sample.

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confidence: 55%

Intermittent Contact Alternating Current Scanning Electrochemical Microscopy: A Method for Mapping Conductivities in Solid Li Ion Conducting Electrolyte Samples

et al. 2016

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“…Although there are numerous methods of sensitive hydrogen detection [8][9][10], only scanning electrochemical microscopy (SECM) allows determining a flux of this analyte generated at ITIES [11]. SECM amperometric detection of hydrogen produced by proton reduction was earlier reported [12][13][14][15][16]. Here, we propose a SECM-tip potentiometric sensor based on reversible hydrogen electrode [17,18] and its application for hydrogen sensing next to a liquid|liquid (1,2-dichloroetane|water) interface.…”

Section: Introductionmentioning

confidence: 99%

Scanning electrochemical microscopy determination of hydrogen flux at liquid|liquid interface with potentiometric probe

Jedraszko¹,

Nogala²,

Adamiak³

et al. 2014

Electrochemistry Communications

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Scanning electrochemical microscopy potentiometric determination of local hydrogen concentration and its flux next to the liquid|liquid interface was demonstrated. This method is based on the shift of open circuit potential of Pt-based reversible hydrogen electrode. The detection system was verified with a system generating hydrogen under galvanostatic conditions. Then, it was applied to aqueous|1,2-dichloroethane interface where hydrogen is produced with decamethylferrocene as electron donor.

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“…[49][50][51][52][53] In an SECM experiment an ultramicroelectrode (UME) is used as an electrochemical scanning probe. UMEs are typically metallic disks or rings that are embedded in an insulating material (i.e.…”

Section: Scanning Electrochemical Microscopymentioning

confidence: 99%

Methods of photoelectrode characterization with high spatial and temporal resolution

Esposito

Baxter

John

et al. 2015

Energy Environ. Sci.

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Advances on scanning electrochemical microscopy (SECM) for energy

Cited by 106 publications

References 184 publications

Intermittent Contact Alternating Current Scanning Electrochemical Microscopy: A Method for Mapping Conductivities in Solid Li Ion Conducting Electrolyte Samples

Intermittent Contact Alternating Current Scanning Electrochemical Microscopy: A Method for Mapping Conductivities in Solid Li Ion Conducting Electrolyte Samples

Scanning electrochemical microscopy determination of hydrogen flux at liquid|liquid interface with potentiometric probe

Methods of photoelectrode characterization with high spatial and temporal resolution

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