简介：Thewell-distributionspindleLiFePO4(LFP)nanoparticlesascathodeoflithiumsecondarybatteriesweresynthesizedbyasolvothermalreactionrouteatlowtemperature(180°C)inwhichtheascorbicacidwasusedasreducingagent.InordertoguaranteethatthepHvaluesofthermalsystemswerenotaffectedtoomuchandthereducibilityofthesystemwasenhancedatthesametime,glucosewaschosenasanauxiliaryreductantinthisreaction.TheobtainedpowderswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),andlaserparticleanalyzer.Theresultsshowthatthecarbon-coateduniformspindleolivineLiFePO4/C-glucoseparticles(glucoseasauxiliaryreductant,LFP/C-G)arepreparedwiththesize500–600nmandwithoutanyimpurityphases.Theirelectrochemicalpropertieswereevaluatedbyelectrochemicalimpedancespectroscopy,cyclicvoltammetry,andgalvanostaticcharge/dischargetests.LFP/C-Ghasahigherconductivityandbetterreversiblecapabilitythancarbon-coatedLFP(LFP/C).ThehighestdischargecapacityofLFP/C-Gis161.3mAh·g-1at0.1Cand108.6mAh·g-1at5.0C,respectively.TheresultsimplythattheneatcrystalnanostructureofLFP/C-Ghasexcellentcapacityretentionandcyclingstability.Theaddingofglucoseisthekeyfactorforthewelldistributionandneatcrystalstructureofnanoparticles,thustheelectrochemicalperformancesofmaterialsareimproved.