Sodium ion batteries (SIBs) are considered as a propitious candidate for large scale energy storage devices due to the copious of sodium resources in earth crust and low cost. In this work, layered Cobalt (Co) substituted O3-type NaTi_0.6Ni_0.3Co_0.1O₂ (O3-NTNC) and P2-type Na_0.5Ti_0.6Ni_0.3Co_0.1O₂ (P2-NTNC) anode materials were prepared by solid-state reaction for SIBs. The prepared O3-NTNC and P2-NTNC can be assigned to rhombohedral and hexagonal structure with the space group of R-3m and P6₃/mmc respectively, using Rietveld refinement. O3-NTNC and P2-NTNC delivered the reversible capacity of 108 and 96 mAh g⁻¹ at 0.1C and revealed coulombic efficiency over 90% even after 50 cycles. In addition, partial Co-substitution enhanced the structural stability of the obtained materials during sodiation and desodiation process.

由于地壳中钠资源丰富且成本低，钠离子电池（SIBs）被认为是大规模储能设备的理想选择。在这项工作中，层状钴 (Co) 取代 O3 型 NaTi _0.6 Ni _0.3 Co _0.1 O ₂ (O3-NTNC) 和 P2 型 Na _0.5 Ti _0.6 Ni _0.3 Co _0.1 O ₂ (P2-NTNC) 负极材料制备如下： SIBs 的固态反应。制备的 O3-NTNC 和 P2-NTNC 可归为菱形和六边形结构，空间群为 R-3m 和 P6 ₃/mmc 分别使用 Rietveld 细化。O3-NTNC 和 P2-NTNC在 0.1C 下提供了 108 和 96 mAh g ^-1的可逆容量，即使在 50 次循环后也显示出超过 90% 的库仑效率。此外，部分共取代增强了所得材料在钠化和脱钠过程中的结构稳定性。