Improvements to Temperature, Warburg Impedance, and Voltage Computations for a Design-Based Predictive Model for Lithium-Ion Capacitors

Moye, Davis George; Moss, Pedro L.; Kannan, D.; Chen, Xujie; Bolufawi, Omonayo; Cao, Weicheng; Foo, Simon Y.

doi:10.4236/msa.2020.116024

Cited by 2 publications

(4 citation statements)

References 31 publications

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“…Typical non-faradaic behavior is conserved from this data results. Interestingly, glyphosate being a polar molecule innately possesses a charged component thereby creating a diffusion gradient that is indicative of the Warburg component 38,39 of this fitted circuit model. From the table, Wo-R metric is based on the real part of the impedance at low frequencies.…”

Section: Resultsmentioning

confidence: 99%

A Highly Sensitive Electrochemical Sensor System to Detect and Distinguish Between Glyphosate and Glufosinate

Dhamu

Poudyal

Muthukumar³

et al. 2021

J. Electrochem. Soc.

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Glyphosate and Glufosinate are widely used herbicides worldwide for controlling weeds in the agriculture field. The large increase in the herbicides tolerant plants has dramatically affected the level of usage of these herbicides recently. With the growing alarm about the associated toxicity to the environmental and human health, there is a need for direct low concentration detection of these herbicides present at the various food crops products and water. In this work, we present a simple electrochemical sensor to selectively detect glyphosate in presence of Glufosinate a structurally similar phosphorus containing amino acid group. The sensor substrate is made up of an interdigitated Au microelectrode, which was immobilized with glyphosate antibody, bounded with the help of the Dithiobis (succinimidyl propionate) (DSP) crosslinker. The data obtained using non-faradaic EIS method, showed a linear range across the whole dosing interval-10 ng ml−1 to 50 ug ml−1 for glyphosate in presence of the interfering component Glufosinate with the detection limit of 10 ng ml−1 and the sensitivity of 1.323% (change in impedance)/ppb. Further the sensor has been proven to measure the spiked pesticides doses in real oatmeal samples. Such micro-volume, high-sensitive, and selective platform which requires no prior sample preparation can be a potentially game-changing electrochemical on-field sensing device to measure the threshold limit, a precautionary step to alert the common man using the food products and farmers working in the agriculture field.

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Section: Resultsmentioning

confidence: 99%

A Highly Sensitive Electrochemical Sensor System to Detect and Distinguish Between Glyphosate and Glufosinate

Dhamu

Poudyal

Muthukumar³

et al. 2021

J. Electrochem. Soc.

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“…To correct these perturbations a foil was applied, averaging 9 data points before and 9 data points after each data point of interest, extending each datapoint over a 24 hour period. In order for the relationships identified in Equations (4) and (8) (16) where i c is the initial capacitance of the LIC [7]. Notice that in order to agree with Equation 4, Equation 15…”

Section: Methodsmentioning

confidence: 99%

“…Using an established, commercial product eliminated much of the experimental variability often encountered in laboratory-made LICs. Much LCA200G1 evaluation data has been made public in earlier studies[16] [17][18].…”

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confidence: 99%

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Observations on Arrhenius Degradation of Lithium-Ion Capacitors

Moye¹,

Moss²,

Chen³

et al. 2020

MSA

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Earlier research determined that lithium-ion capacitor (LIC) cycle life degradation can be accelerated by elevated temperature. LIC cycle life degradation can be described by an Arrhenius equation. This study performed cycle life testing at a constant temperature but varied cycle current. The results were described by an Arrhenius equation relying upon the number of cycles and a constant, which was determined by cycle current. Using mathematical derivations and experimental results, the researchers quantified the effects of activation energy and temperature upon this constant. Because cell temperature is nearly constant during cycles, it was deduced that elevated cycle current decreases activation energy. This lower activation energy then accelerates degradation. Thus this research demonstrates that cycle current ages LICs through its effects on their activation energies.

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Improvements to Temperature, Warburg Impedance, and Voltage Computations for a Design-Based Predictive Model for Lithium-Ion Capacitors

Cited by 2 publications

References 31 publications

A Highly Sensitive Electrochemical Sensor System to Detect and Distinguish Between Glyphosate and Glufosinate

A Highly Sensitive Electrochemical Sensor System to Detect and Distinguish Between Glyphosate and Glufosinate

Observations on Arrhenius Degradation of Lithium-Ion Capacitors

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