High performance supercapacitors (SCs) need to employ superior capacitor electrodes. Among various capacitor electrodes, diamond and related materials have been recognized as one of the best capacitor electrodes. This is because of their excellent stability, large potential windows, rich surface chemistry, varied surface terminations, and the possibility to enhance their surface areas. Herein, this article summarizes recent progress and achievements regarding the synthesis of nanostructures, particles, hybrid materials and pseudocapacitive composites of diamond and related materials. The applications of these materials for the SC construction are then overviewed. The performance of reported diamond electrical double layer capacitors, pseudocapacitors, redox-electrolyte-enhanced SCs, and metal-ion capacitors is reviewed in detail. Some diamond SC devices and demonstrators are highlighted. The future perspectives of diamond SCs are further outlined and discussed.

高性能超级电容器（SC）需要使用优质的电容器电极。在各种电容器电极中，金刚石和相关材料已被公认为是最好的电容器电极之一。这是因为它们具有出色的稳定性，大的潜在窗口，丰富的表面化学成分，多样的表面终止作用以及增加其表面积的可能性。在此，本文总结了有关金刚石及相关材料的纳米结构，颗粒，杂化材料和拟电容复合材料合成的最新进展和成就。然后概述了这些材料在SC结构中的应用。详细审查了报道的金刚石双电层电容器，伪电容器，氧化还原电解质增强型SC和金属离子电容器的性能。一些钻石级SC设备和演示器已突出显示。钻石SC的未来前景将进一步概述和讨论。