A novel preparation route for multi-doped LiFePO4/C from spent electroless nickel plating solution

Synthesis and characterization of grape-like LiFe0.97M0.03PO4/C (M=Ni, CO, Mn) composites

“…Based on the analysis result of SENPS (including 5.4349 mol·L -1 P， 0.0880 mol·L -1 Ni, 1.6977 mol·L -1 C, 0.4200 mol·L -1 Li, 0.0126 mol·L -1 Fe, 0.0008 mol·L -1 Co, 0.0006 mol·L -1 Mn) shown in the literature [15], the stoichiometric amounts of …”

“…In our previous work [15], the Ni-Co-Mn doped LiFePO 4 /C composite with severe aggregation was prepared from spent electroless nickel plating solution (SENPS), Li 2 CO 3 and Fe 2 O 3 . In this study, a grape-like LiFe 0.97 M 0.03 PO 4 /C (M=Ni, Co, Mn) composite was prepared from SENPS by a wet-milling assisted carbothermal reduction method, and the properties of the as-prepared material were characterized.…”

“…It suggests that the formation of the grape-like particles results from the Ni-Co-Mn co-doping. According to references[9,15], Ni, Co and Mn can occupy the site of Fe, which induces the lattice distortion of LiFePO 4 /C crystal. This lattice distortion can reduce the surface energy of LiFePO 4 /C crystal and then impede the growth of LiFePO 4 /C.…”

Effects of Ni and Mn doping on physicochemical and electrochemical performances of LiFePO4/C

“…Rechargeable lithium-ion batteries are the most promising candidates for 10 applications in electric vehicles (EVs), hybrid electric vehicles (HEVs), and power tools in terms of energy densities and power densities [1][2][3]. Since 1991 when introduced by Sony, rechargeable lithium-ion batteries have relied on lithium transition metal oxides as the main sources of cathode active material.…”

“…Current effective strategies to enhance the electrochemical performance of LiFePO 4 include carbon coating on particle surfaces, LiFePO 4 particle size minimization, customizing particle morphologies and metal doping. The carbon coating process has been massively used in industry because the conductive carbon layer increases the electron migration rate during the charge/discharge processes [10,11]. Besides, the reduction of LiFePO 4 particle size results in the shortening of the Li + diffusion path 5 [12,13].…”