In the past decade, due to the demands of the electrochemical energy storage sector, there has been a quest for novel supercapacitor materials that offer champion storage characteristics. Metal oxynitrides are seen as potential candidates for electrochemical energy storage owing to their high cyclability (up to 10⁵ cycles), good intrinsic conductivity (30000–35000 S cm⁻¹), good wettability, corrosion resistance, and chemical inertness. In this review, the use of metal oxynitrides as electrode materials for supercapacitors is discussed. A comparison of oxynitrides with other electrode materials, such as metal oxides, carbon‐based materials, and their composites, is made. This study also places emphasis on the impact of synthesis techniques on the final properties of the material. In view of this critical analysis, we envisage future directions for this category of energy storage materials.

中文翻译：

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金属氧氮化物作为超级电容器应用中有望的电极材料

在过去的十年中，由于电化学储能领域的需求，人们一直在寻求能够提供出色储能特性的新型超级电容器材料。金属氧氮化物由于其高循环性（最多10 ⁵个循环），良好的固有电导率（30000–35000 S cm ^-1）而被视为电化学能量存储的潜在候选者），良好的润湿性，耐腐蚀性和化学惰性。在这篇综述中，讨论了将金属氮氧化物用作超级电容器的电极材料。将氮氧化物与其他电极材料（例如金属氧化物，碳基材料及其复合材料）进行了比较。这项研究还强调了合成技术对材料最终性能的影响。鉴于这种批判性分析，我们设想了此类储能材料的未来发展方向。