论文标题
将lini0.5mn0.5O2作为无共电极材料的稳定性理解
Understanding the Stability for LiNi0.5Mn0.5O2 as a Co-free positive electrode material
论文作者
论文摘要
为了理解无共电极材料的稳定性，在钙化过程中合成了Lini0.5MN0.5O2与不同量的锂合成。通过通过ICP结合精确的化学计量分析，通过squid进行磁矩测量以及通过XPS用AR离子蚀刻来确定制备样品中过渡金属的价态。出乎意料的是，在lini0.5Mn0.5O2颗粒的内部和表面上的过渡金属Ni和Mn显示出不同的电化学性质。这个答案挥之不去的li解相结算机制中的问题。5MN0.5O2。
For understanding the stability of Co-free positive electrode material, LiNi0.5Mn0.5O2 was synthesized with different addition amount of lithium during calcination. The valence states of transition metal in the prepared samples were determined by combining accurate stoichiometry analysis via ICP, magnetic moment measurement via SQUID, and element valence analysis via XPS with Ar ion etching. Unexpectedly, the transition metals, Ni and Mn, at interior and surface of LiNi0.5Mn0.5O2 particles show different electrochemical properties. This answer lingering questions of Li de-intercalation mechanism in LiNi0.5Mn0.5O2.
