A single-source precursor NaCo(acac)₃ (acac = acetylacetone) for layered oxide cathodes of sodium-ion batteries (SIBs) is reported here. It features a 1D chain structure, and is prepared in nearly quantitative yield employing commercially available reagents. The complex is stable in open air and tends to dissolve in various strongly polar solvents, including H₂O and methanol. The phase-pure layered oxide cathode material P2-Na_xCoO₂ for SIBs is obtained through calcining the complex, and exhibits an excellent rate capability, even superior to the recently reported P2-Na_xCoO₂ microspheres. More analogue complexes could be obtained through cationic replacement for the synthesis of other high-performance layered metal oxides for SIBs.

中文翻译：

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用于钠离子电池的具有异源双金属单源前体功能的分层氧化物阴极†

此处报道了钠离子电池（SIB）的分层氧化物阴极的单源前驱体NaCo（acac）₃（acac =乙酰丙酮）。它具有一维链结构，并使用市售试剂以几乎定量的产率制备。该配合物在露天环境中稳定，并易于溶于各种强极性溶剂，包括H ₂ O和甲醇。通过煅烧配合物获得用于SIB的纯相层状氧化物阴极材料P2-Na _x CoO ₂，并且具有优异的倍率性能，甚至优于最近报道的P2-Na _x CoO _2。微球。通过阳离子取代可得到更多类似物，用于合成SIB的其他高性能层状金属氧化物。