Rechargeable aqueous zinc−ion batteries (RAZIBs) have received increasing attention due to cost−effectiveness and inherent safety. A wide variety of advanced cathode materials have been revealed with promising performance in RAZIBs. However, these materials usually require sophisticated procedures at high temperatures, which greatly limit further practical application. Herein, a chimie douce approach is adopted to prepare vanadium oxides from V₂O₅ suspension with the addition of various transition metal cations (Mn²⁺, Zn²⁺, Ag⁺, and Fe³⁺) by simple liquid−solid mixing under ambient conditions. For the cases of Mn²⁺ and Zn²⁺, the dissolution−recrystallization process takes place leading to layered Mn_0.31V₃O₇·1.40H₂O (MnVO) and Zn_0.32V₃O₇·1.52H₂O (ZnVO). The use of Ag⁺ forms tunneled Ag_0.33V₂O₅ (AgVO), and the present of Fe³⁺ stays mainly unreacted V₂O₅. The underlying reaction chemistries are proposed, for which the pH values of precursor solutions are found to be a key factor. Among the prepared materials, layered vanadium oxides exhibit promising battery performance. Particularly, MnVO delivers 340 and 217 mAh g⁻¹ at 1 and 8 A g⁻¹, respectively. A specific capacity of 164 mAh g⁻¹ can be retained after 500 cycles at 1 A g⁻¹. By constrast, AgVO and FeVO demonstrate inferior performance with retaining only 89 and 20 mAh g⁻¹ after 500 cycles.

由于成本效益和固有的安全性，可充电水性锌离子电池（RAZIB）受到越来越多的关注。各种先进的正极材料已被揭示在 RAZIBs 中具有良好的性能。然而，这些材料通常需要在高温下进行复杂的程序，这极大地限制了进一步的实际应用。在本文中，通过简单的液-固混合，通过加入各种过渡金属阳离子（Mn ²⁺、Zn ²⁺、Ag ⁺和Fe ³⁺），采用chimie douce 方法从V ₂ O ₅悬浮液中制备钒氧化物。环境条件。对于Mn ²⁺和Zn ^{2+ 的情况}，溶解-再结晶过程发生导致层状Mn _0.31 V ₃ O ₇ ·1.40H ₂ O (MnVO) 和Zn _0.32 V ₃ O ₇ ·1.52H ₂ O (ZnVO)。Ag ⁺的使用形成隧道 Ag _0.33 V ₂ O ₅ (AgVO)，Fe ³⁺的存在主要是未反应的 V ₂ O ₅. 提出了潜在的反应化学，其中前体溶液的 pH 值被认为是一个关键因素。在制备的材料中，层状钒氧化物表现出良好的电池性能。特别是，MnVO在 1 和 8 A g ^-1时分别提供 340 和 217 mAh g ^-1。在 1 A g ^{-1 下}循环 500 次后可保持164 mAh g ^{-1 的}比容量。相比之下，AgVO 和 FeVO 表现出较差的性能，在 500 次循环后仅保留 89 和 20 mAh g ^-1。