During OCV test test of Li-ion batteries, how long is the pause time between charge and discharge cycles ?

Hi, At 1C-rate, I am doing OCV test on A123 li-ion cyclindrical cells to measure capacity & internal resistance. At the end of discharge cycle how long is the pause time after which I can...

07 August 2018 8,447 2 View

Why to rest battery for some hours before performing Electrochemical Impedance Spectroscpy ?

I am performing EIS (BRS Messtechnik, galvanostatic) on cyclindrical A123 26650 LFP full cell. After setting SOC it is required to wait for some hours before carrying out EIS. I know it is to...

05 June 2018 8,968 0 View

Where to find cheap test stand for Impedance measurements of LFP 26650 full cells ?

Hi, I have 9 26650 LFP cells connected in series and impedance is measured one after the other using BRS EIS device. Currently I have soldered the batteries, but the EIS spectra is not a good...

04 May 2018 5,301 0 View

Automate Kramer Kronig fitting for batch processing ?

I have set of Electrochemical Impedance spectroscopy data of Lithium ion full cell (26650). Then I do Kramers-Kronig fitting using Lin tool of KIT. But this tool allows one cell after another...

03 April 2018 7,582 0 View

Matlab create a file with same name as the one scanned ?

Hi, file='Data.xlsx' M=xlsread(file) Now I want to create a text file of the same name as in the excel name fileID=fopen() Can anyone tell what command comes here ? like sprintf or something...

03 April 2018 6,212 6 View

Scilab read xlsx file ?

Hi, I have about 100 excel.xlsx file and wanted it to read with some Scilab xls or csv function. I could read this excel xlsx format. Also I don't want to use the import data format as I have...

03 April 2018 1,239 0 View

Matlab read csv files and separate columns which contains numeric + string ?

Hello, I have 100*10 matrix. I don't need the first 13 rows (they are strings). I need all data from 14th row. One columns (6) contains string which I don't need. Can anyone tell me how to read it...

03 April 2018 8,592 0 View

Function in Scilab similar to Matlab xlswrite ?

Hi, Similar to Matlab xlswrite(filename,A), what is the function name in Scilab to write on a new excel file ? I tried searching, but couldn't find out. There was only write_csv...

03 April 2018 5,395 2 View

Auto delete highly deviated value while taking the mean in Matlab ?

Hi, I have matrix 'x' (see pic) with 5 values. Out of those one value deviates from the rest. So when I take the mean, standard deviation and plot with errorbar in Matlab, the deviation seems to...

02 March 2018 271 3 View

Why lithium ion battey's Double layer capacitance decreases with decrease in temperature ?

I am using equivalent circuits to fit 26650 LFP's current pulse measurements. We know that as temperature increases, the resistance decreases because of the ion's mobility. But at the same time,...

02 March 2018 109 9 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

What kind of intervention will be relevant to increase motivation among young sport trainees?

Any suggestion on what book to read is also welcome.

03 March 2021 1,646 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...

02 March 2021 8,437 2 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

What element is driving the different slop in the low frequency tail?

My study consists simple corrosion inhibitors in salty brine. Right now I just fit my circuit with randles with CPE. Just wondering how the slop can given more info of the experiment. Or any...

01 March 2021 6,474 3 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

How to model the battery pack in PSIM or PSCAD?

Hello, I have simulated a single battery cell using Thevenin equivalent circuit. For a battery pack, I have a large number of cells connected in series and parallel connections. Is there any way...

28 February 2021 2,116 1 View