I am trying to synthesize NaNi1/3Co1/3Mn1/3O2 material. I used sol-gel method maintaining pH of 10 and citric acid as chelating agent. I used sodium acetate, manganese acetate, cobalt acetate and nickel acetate as my precursors.
After kind of gel formation i have to heat it to 400 deg.C to remove all the organic residuals present in it. The heat treatment was given at 4 deg.C/min to 400 deg.C and kept 4 hours at 400 deg.C. After bringing to room temperature the sample looked like the attached fig. It looks like erruption of powder in the middle as you can see in the fig. The powder nature is puffy.
What might be the reason for it? Kindly share your opinion for it.
Thank you all very much for reading and giving your time.
Hello
Why you heat, if to have the powder it is that
Then you try to decrease the heating temperature (400 ° C for 4h) and see
good luck
Hello Tiwary
I worked with Sol-Gel. seing the aspect, I think that you have organic compounds in your sample, you should heat the sample at more temperature ( minimium 600 °C).
Thank you Researchers for your comment. As i mentioned i am trying to synthesize NaNi1/3Co1/3Mn1/3O2 , this is my sample after precalcination. i am going to heat it to higher temp in second firing. I am using Citric acid as my chelating agent, which has got boiling point of 310 deg. C. It was unusual with this sample erupting. I was wondering about the cause of it.
Thank you very much for both of your time !!
With Regards,
Vivek
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