利用液相结晶法制备出球状且表面具有纳米孔洞结构的磷酸铁前驱体，并通过高温固相法进一步制备成磷酸铁锂，通过XRD、SEM、FT-IR和电化学测试等手段对样品进行表征。结果表明，有纳米孔洞结构的磷酸铁前驱体制备的磷酸铁锂比无纳米孔洞结构的磷酸铁前驱体制备的磷酸铁锂在0.1 C倍率性能下的首次充放电容量提升了17%，达到149.38 mAh/g，电极电荷转移电阻降低了约88%，仅为54.91 Ω。

Spherical iron phosphate precursors with nano porous structure on surface are prepared by liquid phase crystallization method and further made into lithium iron phosphate via high temperature solid phase method. The prepared samples are characterized by XRD, SEM, FT-IR and electrochemical tests. The results indicate that the initial charge/discharge capacity of the LiFePO₄ that is made from iron phosphate precursors with nano pore structure reaches 149.38 mAh·g^-1 at 0.1 C magnification performance, an increase of 17% than that of the LiFePO₄ that is made from iron phosphate precursors without nano pore structure. The electrode charge transfer resistance also reduces about 88%, to 54.91 Ω only.

柯翔(1991-),男,硕士研究生,研究方向为锂离子正极材料,893177314@qq.com。