scholarly journals A Segmented Cell Measuring Technique for Current Distribution Measurements in Batteries, Exemplified by the Operando Investigation of a Zn-Air Battery

2021 ◽  
Author(s):  
Alexander Kube ◽  
Jens Meyer ◽  
Dennis Kopljar ◽  
Norbert Wagner ◽  
Kaspar Andreas Friedrich
Keyword(s):  
Current Distribution ◽  
Gas Flow ◽  
Cathode Side ◽  
Dissolution Behavior ◽  
Transimpedance Amplifier ◽  
Irreversible Capacity ◽  
Amplifier Circuit ◽  
Capacity Loss ◽  
Instrumental Amplifier ◽  
Air Battery

Abstract A transimpedance amplifier circuit as well as an instrumental amplifier circuit were used to measure current densities of a zinc-air battery with an integrated segmented current collector foil. Error calculation showed that the transimpedance amplifier is superior to the used instrumental amplifier, but both methods provide valuable and consistent results. They both showed comparable results with operando insight into the current distribution of the battery. The knowledge about those distributions is essential to avoid fast degradation of battery materials and irreversible capacity loss due to heterogeneous dissolution of the anode during discharge. In this work we showed that oxygen starvation as well as gas flow rate leads to large current gradients. It was also demonstrated that heterogeneous current distributions on cathode side induces also a heterogenous dissolution behavior on the anode, resulting in irreversible capacity loss.

Layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures for high performance Li-ion battery cathodes

2016 ◽  
Vol 4 (47) ◽  
pp. 18416-18425 ◽  
Author(s):  
Fu-Da Yu ◽  
Lan-Fang Que ◽  
Zhen-Bo Wang ◽  
Yin Zhang ◽  
Yuan Xue ◽  
...  
Keyword(s):  
High Performance ◽  
Diffusion Rate ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Cycle Stability ◽  
Ion Diffusion ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion ◽  
Resultant Material

We report an effective approach to fabricate layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures as a cathode material for Li-ion batteries. The resultant material exhibits a reduced first-cycle irreversible capacity loss, rapid Li-ion diffusion rate and excellent cycle stability.

A simple pre-sodiation strategy to improve the performance and energy density of sodium ion batteries with Na4V2(PO4)3 as the cathode material

2020 ◽  
Vol 8 (44) ◽  
pp. 23368-23375
Author(s):  
Shahid Mirza ◽  
Zihan Song ◽  
Hongzhang Zhang ◽  
Arshad Hussain ◽  
Huamin Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Sodium Ion ◽  
Carbon Anode ◽  
Sodium Ion Batteries ◽  
Irreversible Capacity ◽  
Hard Carbon ◽  
Capacity Loss

A pre-sodiation strategy of using Na4V2(PO4)3 cathode to compensate the irreversible capacity loss of hard carbon anode is demonstrated and improves the energy density of sodium ion batteries.

A safe, convenient liquid phase pre-sodiation method for titanium-based SIB materials

2019 ◽  
Vol 55 (98) ◽  
pp. 14761-14764 ◽  
Author(s):  
Yang Cao ◽  
Tianqi Zhang ◽  
Xingguo Zhong ◽  
Tianyou Zhai ◽  
Huiqiao Li
Keyword(s):  
Liquid Phase ◽  
Liquid Sodium ◽  
Irreversible Capacity ◽  
Capacity Loss

We develop a pre-sodiation method by simply immersing the electrode in a liquid sodium source to reduce irreversible capacity loss for titanium-based materials.

Effect of Graphite Particle Size on Irreversible Capacity Loss

2000 ◽  
Vol 147 (6) ◽  
pp. 2110 ◽  
Author(s):  
Karim Zaghib ◽  
Gabrielle Nadeau ◽  
Kimio Kinoshita
Keyword(s):  
Particle Size ◽  
Graphite Particle ◽  
Irreversible Capacity ◽  
Capacity Loss

Analysis of the Irreversible Capacity Loss on Carbons for Li-Ion Batteries

1999 ◽  
Author(s):  
W. Jiang ◽  
X. Song ◽  
K. Kinoshita ◽  
T. Tran
Keyword(s):  
Li Ion Batteries ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion

Fundamental insights about interlayer cation migration in Li-ion electrodes at high states of charge

2019 ◽  
Vol 7 (19) ◽  
pp. 11996-12007 ◽  
Author(s):  
Julija Vinckevičiūtė ◽  
Maxwell D. Radin ◽  
Nicholas V. Faenza ◽  
Glenn G. Amatucci ◽  
Anton Van der Ven
Keyword(s):  
Transition Metals ◽  
Interlayer Cation ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Cation Migration ◽  
Li Ion ◽  
Layered Cathodes

Interlayer cation migration in layered cathodes, which can lead to irreversible capacity loss, is affected by surrounding transition metals.

scholarly journals Design of a Simple UV Double Beam Spectrophotometer Detector Based on a High Gain Trans Impedance Operational Amplifiers for RNA Measurement

2016 ◽  
Vol 4 (2) ◽  
pp. 24
Author(s):  
Alakhib Ibrahim Abdelbary ◽  
Abdelrahim Elobied Ahmed
Keyword(s):  
Nucleic Acid ◽  
High Gain ◽  
Operational Amplifiers ◽  
Nucleic Acid Detection ◽  
Transimpedance Amplifier ◽  
Amplifier Circuit ◽  
Double Beam ◽  
Prototype Design

In this work a simple double beam spectrophotometer detector for the nucleic acid detection has been designed. The developed system contains photodiodes as a sensor, logarithamatic transimpedance amplifier circuit and filter circuit.The developed prototype design accuracy is validated by running a RNA sample and the result shows that our simplified developed setup detects the present of RNA in the sample.

Electrochemical Comparison of Chemically or Physically Modified Natural Graphite Anode for Lithium-Ion Batteries

2007 ◽  
Vol 124-126 ◽  
pp. 995-998
Author(s):  
Joong Pyo Shim ◽  
Hong Ki Lee ◽  
Byung Ho Song
Keyword(s):  
Heat Treatment ◽  
Carbon Black ◽  
Lithium Ion ◽  
Graphite Powder ◽  
Capacity Fade ◽  
Irreversible Capacity ◽  
Natural Graphite ◽  
Capacity Loss ◽  
Graphite Anodes ◽  
Powder Addition

Natural graphite anodes were treated by different methods to improve their cyclability. We tried following methods; heat-treatment at 550oC for graphite powder, addition of carbon black for electrode and VC (vinylene carbonate) in electrolyte. All methods decreased capacity fade rate during constant cycling. The addition of carbon black decreased capacity fade significantly but increased irreversible capacity much at first cycle. Heat-treatment and VC were also effective for cycling and irreversible capacity loss.

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