The lithium iron phosphate (LiFePO4) nanoparticles were successfully synthesized by one-step method and two-step method respectively,using spherically porous carbon(3DOM carbon) as a template.The properties of the material were examined by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM),laser particle size analyzer,and coin cell tests.The material synthesized by two-step method(two-step LFP) had smaller particle size,which resulted in higher specific capacity and better rate performance than the one synthesized by one-step method(one-pot LFP).The discharge specific capacity of two-step LFP was about 136mAh/g at 1C,and for one-pot LFP 109mAh/g at 1C.After cycles,the capacity of two-step LFP had no significant attenuation,while the capacity of one-pot LFP quickly degraded to below 100mAh/g after a few cycles.Study shown that the particle size had a critical effect on the electrochemical performance of LiFePO4,and the template was an effective way to control the particle size of LiFePO4 nanoparticle.
Wang Yuan, Ruan Dingshan, Zeng Yong, Zhang Yingjiao
. Study on preparation of LiFePO4 nanoparticle by template method[J]. New Chemical Materials, 2021
, 49(9)
: 151
-154
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.09.033
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