CAJ | 학술논문

研究不同压实密度对高倍率锂离子电池吸液值、厚度及比能量、内阻、高倍率放电性能、高倍率循环性能的影响,结果表明:提高压实密度可减小吸液量、增大电池体积比能量、降低内阻;压实密度对高倍率放电和高倍率循环性能的影响比较复杂,通过各种压实密度对比实验测试表明,本体系正极压实密度3.5 g/cm~3,负极压实密度1.5 g/cm~3组合得到锂离子电池综合性能优异,15 C倍率放电保持1 C容量的94.7%,15 C 100周高倍率放电循环保持初始容量的91.2%.
연구불동압실밀도대고배솔리리자전지흡액치、후도급비능량、내조、고배솔방전성능、고배솔순배성능적영향,결과표명:제고압실밀도가감소흡액량、증대전지체적비능량、강저내조;압실밀도대고배솔방전화고배솔순배성능적영향비교복잡,통과각충압실밀도대비실험측시표명,본체계정겁압실밀도3.5 g/cm~3,부겁압실밀도1.5 g/cm~3조합득도리리자전지종합성능우이,15 C배솔방전보지1 C용량적94.7%,15 C 100주고배솔방전순배보지초시용량적91.2%.
The influences of different press densities on the electrolyte absorption value,thickness and power density,internal resistance,high rate discharge performance,high rate cycle performance of lithium-ion battery were studied.The results show that increasing press density can improve volume power densities and reduce internal resistance and absorbing electrolyte value.The influences of press density on high rate discharge performance and high rate cycle performance are complicated.By the contrast experiment at different press densities,the optimal performance is obtained when the density of cathode is 3.5 g/cm~3 and the anode is 1.5 g/cm~3.The 15.0 C discharge capacity retains 94.7% of 1 C discharge capacity.After 100 cycles at 15 C discharge,the capacity retains 91.2% of initial discharge capacity.