A sample matrix-assisted chemical modification approach was developed for graphite furnace atomic Absorption spectrometric determination of bismuth in nickel-based alloy samples.Nickel was used to increase the pyrolys...A sample matrix-assisted chemical modification approach was developed for graphite furnace atomic Absorption spectrometric determination of bismuth in nickel-based alloy samples.Nickel was used to increase the pyrolysis and atomization temperature in the determination of bismuth,thus the matrix interference was alleviated.In addition,the nickel sample matrix also efficiently increased the sensitivity of bismuth.Macro constituents of nickel-based alloys,such as Cu,Fe and Al,caused minimal interference with the determination of bismuth.Under the optimized experimental conditions,the limit of detection(LOD) for Bi was found to be 1 μg L-1.Standard addition approach was used to calibrate the bismuth content in the nickel-based alloys to achieve the goal of sample matrix-assisted chemical modification.The proposed method features simplicity,rapidness,and high sensitivity.展开更多
A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2...A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2 has good charge/discharge circle capability.It is a new cathode material for lithium ion batteries.展开更多
文摘A sample matrix-assisted chemical modification approach was developed for graphite furnace atomic Absorption spectrometric determination of bismuth in nickel-based alloy samples.Nickel was used to increase the pyrolysis and atomization temperature in the determination of bismuth,thus the matrix interference was alleviated.In addition,the nickel sample matrix also efficiently increased the sensitivity of bismuth.Macro constituents of nickel-based alloys,such as Cu,Fe and Al,caused minimal interference with the determination of bismuth.Under the optimized experimental conditions,the limit of detection(LOD) for Bi was found to be 1 μg L-1.Standard addition approach was used to calibrate the bismuth content in the nickel-based alloys to achieve the goal of sample matrix-assisted chemical modification.The proposed method features simplicity,rapidness,and high sensitivity.
文摘A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2 has good charge/discharge circle capability.It is a new cathode material for lithium ion batteries.
