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        文章簡介
        工藝參數對NCM811半電池影響研究 - v1
          

        摘要:研究了半電池配方、壓實密度工藝參數對團聚體LiNi0.8Co0.1Mn0.1O2NCM811)正極材料電化學性能的影響。研究表明:配方中導電劑含量較低時有利于提升壓實密度同時緩解顆粒破碎程度,但是導電劑的減少會略微影響倍率和循環性能。壓實密度的提升可以增加活性物質和導電劑的接觸,降低阻抗從而提升容量,但是會加劇正極材料顆粒破碎,從而導致循環過程中阻抗增加以及循環衰減。該研究為NCM811材料的開發和應用提供了實驗依據,有助于推動高鎳正極材料的進一步發展。

        Abstract: The effects of half-cell formula and compaction density on electrochemical properties of LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material were studied. The results show that the low content of conductive agent in the formula is conducive to increasing the compaction density and alleviating the degree of particle breakage, but the reduction of conductive agent will slightly affect the rate and circulation performance. The increase of the electrode density can increase the contact between the active material and the conductive agent, reduce the impedance and thus increase the capacity, but it will also aggravate the particle breakage of the positive electrode material, resulting in increased impedance and cyclic attenuation during the cycle. This study provides experimental basis for the development and application of NCM811 materials, and is helpful to promote the further development of high nickel cathode materials.



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