Structure and performance of Na+ and Fe2+ co-doped Li1-xNaxMn0.8Fe0.2PO4/C nanocapsule synthesized by a simple solvothermal method for lithium ion batteries

High‐performance LiMn 0 . 8 Fe 0 . 2 PO 4 /C cathode prepared by using the toluene‐soluble component of pitch as a carbon source

“…The I D / I G value of samples TS‐200‐0.5 and SU‐340‐0.5 are 0.95 and 1.01, respectively. It shows that the TS‐200‐0.5 carbon layer has higher graphitization degree and conductivity, 37 which is consistent with the XRD analysis results of pyrolysis carbon TS‐C and SU‐C.…”

Synthesis and Characterization of a LiFe0.6Mn0.4PO4 Olivine Cathode for Application in a New Lithium Polymer Battery

“…On the other hand, the LiMn x Fe 1 − x PO 4 may be further improved through the addition of new elements as dopants. [32] Indeed, LiFe 0.4 Mn 0.595 Cr 0.005 PO 4 /C prepared by ball milling/calcination revealed a specific capacity of 164 mAh g −1 for 50 cycles at 0.1C, [33] LiMn 0.8 Fe 0.19 Ni 0.01 PO 4 /C synthesized by solvothermal/calcination process delivered 157 mAh g −1 at 0.5C for 200 cycles, [34] Li(Mn 0.9 Fe 0.1 ) 0.95 Mg 0.05 PO 4 /C prepared by mechano-chemical liquid-phase activation has shown 140 mAh g −1 for 100 cycles at 1C, [35] LiMn 1/3 Fe 1/3 V 1/3 PO 4 /C achieved by ball milling/calcination delivered 122 mAh g −1 for 100 cycles at 5C, [36] Li(Mn 0.85 Fe 0.15 ) 0.92 Ti 0.08 PO 4 /C obtained by ball milling/calcination performed 144 mAh g −1 for 50 cycles at 1C, [37] LiMn 0.792 Fe 0.198 Mg 0.01 PO 4 /SGCNT synthesized by sol-gel/calcination delivered 119 mAh g −1 for 3000 cycles at 1C, [38] LiMn 0.8 Fe 0.19 Mg 0.01 PO 4 /C prepared by ball milling/calcination revealed 109 mAh g −1 at 10C, [39] LiMn 0.8 Fe 0.19 Mg 0.01 PO 4 /C synthesized by ball milling/calcination has shown 128 mAh g −1 at 5C, [40] Li 0.995 Nb 0.005 Mn 0.85 Fe 0.15 PO 4 /C prepared by ball milling/calcination revealed 146 mAh g −1 for 50 cycles at 1C, [41] LiFe 0.48 Mn 0.48 Mg 0.04 PO 4 performed 146 mAh g −1 at 0.1C, [42] Li 0.97 Na 0.03 Mn 0.8 Fe 0.2 PO 4 /C prepared by solvothermal/ calcination delivered 125 mAh g −1 for 200 cycles at 0.5C, [43] Li 0.98 Na 0.02 (Fe 0.65 Mn 0.35 ) 0.97 Mg 0.03 PO 4 /C prepared by sol-gel/ calcination has shown 148 mAh g −1 for 40 cycles at 0.1C, [44] LiFe 0.4 Mn 0.6 (PO 4 ) 0.985 I 0.015 prepared by ball milling/calcination revealed 122 mAh g −1 for 50 cycles at 1C, [45] and a LiFe 0.4 Mn 0.6 PO 3.97 F 0.03 synthesized by ball milling/calcination delivered 153 mAh g −1 at 0.1C. [46] However, we point out that the simplicity of our approach may actually favor the scaling up of commercial olivine cathodes with enhanced properties compared to those presently available in the market.…”

Li2SiO3 Modification of C/LiFe0.5Mn0.5PO4 for High Performance Lithium‐Ion Batteries

“…[8,9] Meanwhile, the low temperature property of LiFe 1-x Mn x PO 4 materials is still one of the obstacles to their wider application. [10][11][12] To alleviate these challenges and promote their electrochemical performance even further, there are currently three main approaches: [13][14][15][16] (1) Doping of exotic atoms, such as Mg, [17] Ni, [18] Na, [19] F, [20] I [21] et al; (2) surface modification, surface coating of LiFe 1-x Mn x PO 4 with high electronic conductivity and high ionic diffusion coefficient, including carbon, [22] conductive polymers, [23] fast lithium ion conductor [24] et al; (3) Morphology Design. [25,26] In addition, lithium-ion conductors exhibit unique properties not only for their contribution to the diffusion coefficient of lithium ions, but also for their ability to inhibit the dissolution of transition metal ions.…”

“…Meanwhile, the low temperature property of LiFe 1‐x Mn x PO 4 materials is still one of the obstacles to their wider application [10–12] . To alleviate these challenges and promote their electrochemical performance even further, there are currently three main approaches: [13–16] (1) Doping of exotic atoms, such as Mg, [17] Ni, [18] Na, [19] F, [20] I [21] et al. ; (2) surface modification, surface coating of LiFe 1‐x Mn x PO 4 with high electronic conductivity and high ionic diffusion coefficient, including carbon, [22] conductive polymers, [23] fast lithium ion conductor [24] et al.…”