RATE-LAW APPLICATION TO SIMULATE LITHIUM-BASED CELL EXPERIMENTAL DATA

A rate-law formulation, based on the concept of the overall activation energy barrier, has been developed [1] to simulate the experimental data of a lithium-based electrochemical cell/battery. This short paper illustrates the application of that formulation to simulate the experimental data acquired from the cell during the discharge period.

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The Activating Effect of Strong Acid for Pd-Catalyzed Directed C–H Activation by Concerted Metalation-Deprotonation Mechanism

Molecules ◽

10.3390/molecules26134083 ◽

2021 ◽

Vol 26 (13) ◽

pp. 4083

Author(s):

Heming Jiang ◽

Tian-Yu Sun

Keyword(s):

Activation Energy ◽

Dft Calculations ◽

Energy Barrier ◽

Computational Study ◽

Strong Acid ◽

Activation Energy Barrier ◽

Pd Catalysts ◽

Acid Ligand ◽

Strong Acids

A computational study on the origin of the activating effect for Pd-catalyzed directed C–H activation by the concerted metalation-deprotonation (CMD) mechanism is conducted. DFT calculations indicate that strong acids can make Pd catalysts coordinate with directing groups (DGs) of the substrates more strongly and lower the C–H activation energy barrier. For the CMD mechanism, the electrophilicity of the Pd center and the basicity of the corresponding acid ligand for deprotonating the C–H bond are vital to the overall C–H activation energy barrier. Furthermore, this rule might disclose the role of some additives for C–H activation.

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The molten helix: low activation energy barrier for helix-helix transitions

Peptides ◽

10.1007/978-94-011-0683-2_301 ◽

1994 ◽

pp. 896-898

Author(s):

G. R. Marshall ◽

M. L. Smythe ◽

S. E. Huston ◽

R. D. Bindal

Keyword(s):

Activation Energy ◽

Energy Barrier ◽

Activation Energy Barrier

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Effect of Two-Step Austempering Process on Transformation Kinetics of Nanostructured Bainitic Steel

Materials ◽

10.3390/ma12010166 ◽

2019 ◽

Vol 12 (1) ◽

pp. 166 ◽

Cited By ~ 6

Author(s):

Chunhe Chu ◽

Yuman Qin ◽

Xuemei Li ◽

Zhinan Yang ◽

Fucheng Zhang ◽

...

Keyword(s):

Activation Energy ◽

Energy Barrier ◽

Bainitic Ferrite ◽

Transformation Process ◽

Transformation Rate ◽

Bainitic Steel ◽

Transformation Kinetics ◽

Activation Energy Barrier ◽

Quenching Process ◽

Kinetics Of

The two-step austempering process has been reported to be an effective method to accelerate the bainitic transformation process by introducing martensite (Q-M-B). However, in this study, it was found that the Q-M-B process reduced the incubation time, but the transformation duration remained nearly unchanged. The notably reduced activation energy barrier for nucleation of bainitic ferrite on the preformed martensite should be responsible for the reduced duration time of the Q-M-B process. A process that both of the two steps were above, Ms (Q-B-B), has been demonstrated to increase transformation rate and improve the amount of bainitic ferrite, which probably results from the additional hysteresis free energy provided by the first quenching process.

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Sulfur doped Li1.3Al0.3Ti1.7(PO4)3 solid electrolytes with enhanced ionic conductivity and a reduced activation energy barrier

Physical Chemistry Chemical Physics ◽

10.1039/d0cp03442h ◽

2020 ◽

Vol 22 (30) ◽

pp. 17221-17228

Author(s):

Abdulkadir Kızılaslan ◽

Mine Kırkbınar ◽

Tugrul Cetinkaya ◽

Hatem Akbulut

Keyword(s):

Activation Energy ◽

Ionic Conductivity ◽

Energy Barrier ◽

Solid Electrolytes ◽

Activation Energy Barrier ◽

Conductivity Enhancement

The mechanism of the ionic conductivity enhancement in sulfur-doped Li1.3Al0.3Ti1.7(PO4)3 (LATP) solid electrolytes.

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Interplay between spin crossover and proton migration along short strong hydrogen bonds

Chemical Science ◽

10.1039/d0sc04918b ◽

2021 ◽

Author(s):

Verónica Jornet-Mollá ◽

Carlos Giménez-Saiz ◽

Laura Cañadillas-Delgado ◽

Dmitry S. Yufit ◽

Judith A. K. Howard ◽

...

Keyword(s):

Activation Energy ◽

Hydrogen Bond ◽

Hydrogen Bonds ◽

Low Temperatures ◽

Energy Barrier ◽

Spin Crossover ◽

Strong Hydrogen Bond ◽

Activation Energy Barrier ◽

Proton Migration

A proton migration across a short strong hydrogen bond can be triggered by spin crossover of a remote Fe2+ cation, with the onset of a photoinduced activation energy barrier for proton motion at low temperatures.

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Measuring the activation energy barrier for the nucleation of single nanosized vapor bubbles

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1903259116 ◽

2019 ◽

Vol 116 (26) ◽

pp. 12678-12683 ◽

Cited By ~ 12

Author(s):

Jing Chen ◽

Kai Zhou ◽

Yongjie Wang ◽

Jia Gao ◽

Tinglian Yuan ◽

...

Keyword(s):

Activation Energy ◽

Rate Constant ◽

Nucleation Rate ◽

Energy Barrier ◽

Bubble Nucleation ◽

Vapor Bubbles ◽

Activation Energy Barrier ◽

Facet Structure ◽

Optical Images ◽

Local Activation Energy

Heterogeneous bubble nucleation is one of the most fundamental interfacial processes that has received broad interest from diverse fields of physics and chemistry. While most studies focused on large microbubbles, here we employed a surface plasmon resonance microscopy to measure the nucleation rate constant and activation energy barrier of single nanosized embryo vapor bubbles upon heating a flat gold film with a focused laser beam. Image analysis allowed for simultaneously determining the local temperature and local nucleation rate constant from the same batch of optical images. By analyzing the dependence of nucleation rate constant on temperature, we were able to calculate the local activation energy barrier within a submicrometer spot. Scanning the substrate further led to a nucleation rate map with a spatial resolution of 100 nm, which revealed no correlation with the local roughness. These results indicate that facet structure and surface chemistry, rather than geometrical roughness, regulated the activation energy barrier for heterogeneous nucleation of embryo nanobubbles.

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