Electrochemical performance of Prussian blue analogues (PBAs) as positive electrode materials for non-aqueous Na-ion batteries is known to be highly dependent on their synthesis conditions according to the previous researches. Na-rich PBAs, Na_xM[Fe(CN)₆]·nH₂O where M = Mn, Fe, Co, and Ni, are prepared via precipitation method under the same condition. The structure, chemical composition, morphology, valence of the transition metals, and electrochemical property of these samples are comparatively researched. The PBA with Mn shows large reversible capacity of 126 mAh g⁻¹ in 2.0–4.2 V at a current density of 30 mA g⁻¹ and the highest working voltage owning to high redox potential of Mn^2+/3+ in MnN₆ and Fe^2+/3+ in FeC₆. While, the PBA with Ni exhibits the best cyclability and rate performance though only 66 mAh g⁻¹ is delivered. The significant differences in electrochemical behaviors of the PBAs originate from the various properties depending on different transition metals.

根据先前的研究，已知普鲁士蓝类似物（PBA）作为非水Na离子电池正极材料的电化学性能高度依赖于其合成条件。在相同条件下，采用沉淀法制备了富Na的PBA，即Na _x M [Fe（CN）₆ ]· n H ₂ O，其中M = Mn，Fe，Co和Ni。对这些样品的结构，化学组成，形态，化合价和电化学性能进行了比较研究。具有Mn的PBA在2.0–4.2 V的电流密度为30 mA g ^-1时显示出126 mAh g ^-1的大可逆容量，并且具有较高的氧化还原电位，因此具有最高的工作电压^{2 + / 3 +}在MNN ₆和Fe ^{2 + / 3 +}中的FeCl ₆。同时，尽管仅交付了66 mAh g ^-1，但带有Ni的PBA表现出最佳的循环性和速率性能。PBA电化学行为的显着差异源于取决于不同过渡金属的各种特性。