| Bismuth base anode materials prepared by water heat method,static electrospinning method,and co-precipitation method,after combining carbon thermal treatment,it has achieved good electrochemical performance when it is made into a lithium-ion battery anode.Bi-based materials are characterized by multiple testing methods,explore the impact of material structure characteristics on its electrochemical performance.Synthesize Bi@CF materials with electrospinning method,adjust the BiCl3addition amount to explore changes in the structure of the composite material,and the impact on electrochemical properties after being made into a lithium-ion battery anode material.When the amount is 1.5 g,the composite material shows an excellent discharge ratio capacity.Under 100 m A·g-1 current density,it keeps 415.3 m Ah·g-1 after100 cycles.It is observed by SEM that this sample still maintains the material structure after cycle 100 times.Bi2O3 nano-balls are made of water thermal method,then the Bi@C composite material with a spherical carbon-covered structure is synthesized under the electric field force.By adjusting the amount of Bi2O3,the composite with a mass ratio of 20%obtained an excellent discharge capacity.Under the current density of 100 m A·g-1,after100 cycles the capacity can be stabilized at 518 m Ah·g-1,and the composite material can still maintain spherical appearance after cycles.Immerse Bi into PB and synthesize the PB-Bi micro-cube,investigate the effects of thermal treatment temperature on the structure and electrochemical performance of the composite material.Composite material at 500℃heat treatment,it has 576.6m Ah·g-1 discharge capacity under 100 m A·g-1 current density after 100 cycles.Under the current density of 500 m A·g-1,the capacity reaches 712 m Ah·g-1 after 500 cycles.After the composite is treated with a specific temperature,it can maintain a stable material structure and obtain a high discharge ratio,which has a ce rtain research value.Figure 48;Table 2;Reference 70. |
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