钠离子电池层状正极材料研究进展

朱晓辉, 庄宇航, 赵旸, 倪明珠, 徐璟, 夏晖

Development of layered cathode materials for sodium-ion batteries

Xiaohui ZHU, Yuhang ZHUANG, Yang ZHAO, Mingzhu NI, Jing XU, Hui XIA

图6 (a) P2-Na2/3Ni1/3Mn2/3O2的充电曲线[32]；(b) Na+/空位有序-无序转变机理[32]；(c) P2-Na2/3Ni1/3Mn2/3O2和P2-Na2/3Ni1/3Mn1/3Ti1/3O2中Nae和Naf的能量差[32]；(d)～(e)传统和高熵金属氧化物的氧化还原反应机理[33]

Fig.6 (a) the two voltage plateaus indicate the rearrangement of Na+/vacancy ordering[32]; (b) in-plane Na+/vacancy orderings of NaδNi1/3Mn2/3O2 in the triangular lattice[32]; (c) calculated energy difference between the Nae and Naf site for P2-Na2/3Ni1/3Mn2/3O2 (P2-NaNM) and P2-Na2/3Ni1/3Mn1/3Ti1/3O2 (P2-NaNMT) [32]; (d)～(e) possible mechanism of high-entropy composition in facilitating layered O3-type structure[33]