Preparation and characterization of nano-crystalline LiCoVO4 and LiNiVO4 used as cathodes for lithium ion batteries
Nano-crystalline LiCoVO4 and LiNiVO4 were prepared using Li2CO3, Co(NO3)2· 6H2O or Ni(NO3)2·6H2O and NH4VO3 as raw materials in deionized water and tartaric acid as a complexing reagent, and followed by 450-600°C calcination for 12 h. TGA showed weight loss due to the combustion of the precursor at...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-38549092107&partnerID=40&md5=368ad11392a2f063d7ec1d2235974364 http://cmuir.cmu.ac.th/handle/6653943832/5137 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | Nano-crystalline LiCoVO4 and LiNiVO4 were prepared using Li2CO3, Co(NO3)2· 6H2O or Ni(NO3)2·6H2O and NH4VO3 as raw materials in deionized water and tartaric acid as a complexing reagent, and followed by 450-600°C calcination for 12 h. TGA showed weight loss due to the combustion of the precursor at 190-500°C. The products were characterized by XRD and found to be LiCoVO4 and LiNiVO4 with an inverse spinel structure. FTIR and Raman analyses showed the V-O stretching vibration of VO4 tetrahedrons and Li-O bending vibration of LiO6 octahedrons. TEM showed nano-powders of LiCoVO4 and LiNiVO4 which have high specific areas for improving lithium ion migration in lithium ion batteries. |
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