With the development of portable electronic equipment, electric vehicle, space technology, and power‐grid and energy‐storage technology, new efficient energy‐storage devices need to be developed urgently. Recently, asymmetric supercapacitors (ASCs) have attracted ever‐increasing interest as one of the most promising energy‐storage devices given their remarkable advantages of wide operation voltage window, high power density, and moderate energy density. However, to meet the needs of the rapid development of electronic equipment, it is necessary to optimize the electrode materials and device design to further boost the energy density of ASCs. In recent years, numerous attempts have been made to improve the energy density of ASC devices by increasing the capacitance and/or enlarging the voltage window. Here, recent smart strategies are highlighted, including the introduction of intrinsic defects, element doping, and surface functionalization to increase the capacitance of the electrode materials, and optimizing the electrolyte and electrode materials, as well as their surface charge, to broaden the voltage of cells. Moreover, the current challenges and future opportunities for the development of high‐performance ASCs are also discussed.

中文翻译：

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实现高能量不对称超级电容器的最新智能方法

随着便携式电子设备，电动汽车，空间技术以及电网和储能技术的发展，迫切需要开发新的高效储能设备。近年来，非对称超级电容器（ASC）作为最有前途的储能设备之一，引起了越来越多的关注，这是因为它们具有宽工作电压范围，高功率密度和中等能量密度的显着优势。但是，为了满足电子设备快速发展的需要，有必要对电极材料和器件设计进行优化，以进一步提高ASC的能量密度。近年来，已经进行了许多尝试以通过增加电容和/或增大电压窗口来提高ASC装置的能量密度。在这里，重点介绍了最新的明智策略，包括引入固有缺陷，元素掺杂和表面功能化，以增加电极材料的电容，并优化电解质和电极材料及其表面电荷，以拓宽电池电压。此外，还讨论了开发高性能ASC的当前挑战和未来机遇。