Synthetic Route of C2O4Sn. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Tin(II) oxalate, is researched, Molecular C2O4Sn, CAS is 814-94-8, about Structures and electrochemical properties of Sn-Cl co-doped Li2MnO3 as positive materials for lithium ion batteries. Author is Wang, Fei; Zhai, Huan-huan; Wang, Du-dan; Li, Yu-peng; Chen, Kang-hua.
Pos. material Li2MnO3 shows the highest ratio of lithium to manganese among lithium-rich materials and exhibits the theor. capacity up to 458 mAh·g-1, making it one of the most promising cathode materials. However, this material has the intrinsic low elec. conductivity and poor cycle stability. In this paper, Li2MnO3, the lithium-rich pos. material, was prepared by sol-gel method using acetate as raw material and citric acid as a complexing agent. By using SnC2O4 as a tin source, Sn4+ instead of Mn4+ was introduced to obtain the materials with different doping amounts The resultant solution was evaporated at 80°C under vigorous stirring to get a viscous gel. Next, the resulting gel was dried at 120°C for 12 h. Finally, the gathered precursor was calcined at 600°C for 6 h under an air atm. to obtain the target material. It was found that the proper content of Sn4+ doping could increase the specific discharge capacity of the material, obtaining as high as 256.3 mAh·g-1 at low current, but had a detrimental influence on the rate performance. On this basis, SnCl2 was used for doping modification, and the Sn4+ and Cl- co-doping into Li2MnO3 revealed a better developed layered structure with high conductivity The intensity of super lattice peak formed between 2θ = 20° and 30° was increased by Cl-doping, indicating the ordered Li/Mn in the TM layer. Especially, this Sn-Cl co-doped Li2MnO3 sample delivered the relatively high specific discharge capacity of approx. 160 mAh·g-1 after 80 cycles at 20 mA·g-1. At the high c.d. of 400 mA·g-1, this material provided the specific discharge capacity of 116 mAh·g-1, which is about twice that of the undoped sample.
There is still a lot of research devoted to this compound(SMILES：O=C([O-])C([O-])=O.[Sn+2])Synthetic Route of C2O4Sn, and with the development of science, more effects of this compound(814-94-8) can be discovered.
Reference:
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