Recently, metal oxynitrides (MONs) have gained a lot of attention as electrode materials for supercapacitor (SC) applications due to their unique properties such as high electronic conductivity, wettability, corrosion resistance, and chemical robustness. Nanostructuring strategies of MONs opens fresh avenues for energy storage. Though various transition metal oxides (MO) and metal nitrides (MN) have been explored as electrode materials for SC applications, they have limitations associated with poor cyclability and rate capabilities. Hence, there is a value to exploring intermediate oxynitride compounds (MONs) in place of pure MOs and MNs. Chromium oxynitride (CrO_XN_Y) as electrode material is not yet been explored for SC applications. In this context, we have carried out the systematic study of the nanostructured nano‐spherical CrO_XN_Y nanoparticle as an electrode material for SC applications. The electrochemical performance of the CrO_XN_Y electrode is tested in both the three and two electrode assembly. The CrO_XN_Y electrode shows capacitance of 146 F g⁻¹ at 10 mV s⁻¹ in three electrode configuration. The symmetric coin cell (CR2032) is fabricated and tested up to 10,000 cycles at 2 A g⁻¹ and it shows excellent capacity retention up to 98 %. The energy and power densities of the symmetric device are ∼8 W h kg⁻¹ at 1 A g⁻¹ and 28.8 kW kg⁻¹ at 10 A g⁻¹, respectively. As a proof of concept, a red light‐emitting diode (LED) is lit by serially connecting two symmetric coin cells (2 V). These attributes of CrO_XN_Y, such as excellent capacitance retention, long cyclic stability, and high rate capability, indicates that it can be used as a durable electrode material for SC technology.

中文翻译：

---

氮氧化铬作为对称超级电容器的耐用电极材料

近年来，金属氧氮化物（MONs）由于其独特的特性（例如高电导率，可湿性，耐腐蚀性和化学稳定性）而成为超级电容器（SC）应用的电极材料，引起了广泛的关注。MONs的纳米结构化策略为储能开辟了新途径。尽管已经探索了各种过渡金属氧化物（MO）和金属氮化物（MN）作为SC应用的电极材料，但它们具有与较差的循环能力和速率能力相关的局限性。因此，有必要探索替代纯MOs和MNs的中间氧氮化物（MONs）。氮氧化铬（CrO _X N _Y），因为尚未针对SC应用探索电极材料。在此背景下，我们对纳米结构的纳米球形CrO _X N _Y纳米颗粒作为SC应用的电极材料进行了系统的研究。在三个和两个电极组件中均测试了CrO _X N _Y电极的电化学性能。在三个电极配置中，CrO _X N _Y电极在10 mV s ^-1下的电容值为146 F g ^-1。对称纽扣电池（CR2032）的制造和测试在2 A g ^-1下高达10,000次循环并且显示出高达98％的出色容量保持率。对称装置的能量和功率密度〜8 W时千克是^-1 1 A G ^-1 28.8千瓦kg和^-1在10 A G ^-1，分别。作为概念证明，通过串联连接两个对称纽扣电池（2 V），红色发光二极管（LED）点亮。CrO _X N _Y的这些属性，例如出色的电容保持性，长循环稳定性和高倍率性能，表明它可用作SC技术的耐用电极材料。