I am perplexed that if a Li-ion battery shows a discharge capacity of say 200 mAh/g for the first discharge cycle at 0.1C rate, 180 mAh/g for 0.2, and it also showed 170 mAh/g at 0.3C. So, can we say that this is a trend or it is a material property?
200 --> 0.1
180--> 0.2
170 --> 0.3
Please, share your opinion.
(Reference to : Cathode material with composition Li-Ru-O)
Hello Aditya Narayan Singh ,
Is the battery temperature regulated? Usually the voltage increase attributed to self-heating of Lithium-Ion batteries will negate the Peukert loss in capacity. However, if the temperature is regulated this will not necessarily be the case.
Jules
Thank you Jules Lloyd Hammond ...
Our system is temperature controlled one. That makes me worry about the situation..
Generally, the capacity decreases with increasing of the C-rate of the test. This is a well-known phenomena. due to fast kinetics of the reaction between Li-ion and the active materials
Dear Ahmed A. Aboalhassan Sir,
Thanks for your information......but I my worry is not the capacity decrease, but the trend in which capacity is decreasing. Is there any trend in capacity and c rate?
Dear Aditya
As Ahmed Abdul Qway mentioned, this is a well known phenomena. When the load increases (C-rate) the specific capacity decreases. And I noticed that the decrease in your case is not severe, it is good for the initial capacity. In fact there is not systemic decrease upon increase the C-rate value. This decrease depends on the property of each storage electrode material.
Dear A.M.A. Hashem Sir,
Thank you for your nice reply....do you feel that this degradation is not to worry?
Thanks and Regard,
Aditya
Thank you A.M.A. Hashem Sir...
Hope to get few exciting results....
Thank you ..
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