Shen Fei, Sun Zhongti, He Qinggang, Sun Jingyu, Kaner Richard B, Shao Yuanlong
College of Energy, Soochow Institute for Energy and Materials InnovationS (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, 215006 Suzhou, P. R. China.
Mater Horiz. 2021 Apr 1;8(4):1130-1152. doi: 10.1039/d0mh01481h. Epub 2021 Jan 4.
The demand for high rate energy storage systems is continuously increasing driven by portable electronics, hybrid/electric vehicles and the need for balancing the smart grid. Accordingly, NbO based materials have gained great attention because of their fast cation intercalation faradaic charge storage that endows them with high rate energy storage performance. In this review, we describe the crystalline features of the five main phases of NbO and analyze their specific electrochemical characteristics with an emphasis on the intrinsic ion intercalation pseudocapacitive behavior of T-NbO. The charge storage mechanisms, electrochemical performance and state-of-the-art characterization techniques for NbO anodes are summarized. Next, we review recent progress in developing various types of NbO based fast charging electrode materials, including NbO based mixed metal oxides and composites. Finally, we highlight the major challenges for NbO based materials in the realm of high rate rechargeable energy storage and provide perspectives for future research.
受便携式电子产品、混合动力/电动汽车以及平衡智能电网需求的推动，对高倍率储能系统的需求持续增长。因此，基于NbO的材料因其快速的阳离子嵌入法拉第电荷存储特性而备受关注，这种特性赋予了它们高倍率储能性能。在本综述中，我们描述了NbO五个主要相的晶体特征，并分析了它们的具体电化学特性，重点关注T-NbO的固有离子嵌入赝电容行为。总结了NbO阳极的电荷存储机制、电化学性能和最新表征技术。接下来，我们回顾了开发各种基于NbO的快速充电电极材料的最新进展，包括基于NbO的混合金属氧化物和复合材料。最后，我们强调了基于NbO的材料在高倍率可充电储能领域面临的主要挑战，并为未来的研究提供了展望。
