Supercapacitors with fast charge/discharge rate and long cycling stability (>50 000 cycles) are attractive for energy storage and mobile power supply. In this paper, a facile strategy is developed to fabricate an Fe₂O₃/FeS‐decorated N, S‐codoped hierarchical porous carbon hybrid. Its microstructure and compositions can be readily controlled through adjusting the hydrothermal reaction between waxberry and iron sulfate. The constructed supercapacitors with the as‐prepared carbon materials from this reaction are able to exhibit outstanding capacitive performance with a superfast charge/discharge rate (<1 s), ultralong cycle life (>50 000 cycles, 80 A g⁻¹), ultrahigh volumetric capacitance (1320.4 F cm⁻³, 0.1 A g⁻¹), and high energy density (100.9 W h kg⁻¹, 221.9 W h L⁻¹). The outstanding performance makes it one of the best biomass‐derived supercapacitors. The superior capacitive behavior is likely to arise from the N and S codoping on the surface/edge/skeleton of the carbon microspheres and nanosheet composites coupled with the fast redox reaction of Fe₂O₃/FeS. Overall, this research presents a new avenue for developing the next generation of sustainable high‐performance energy storage device.

中文翻译：

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由Waxberry衍生的分层多孔碳材料实现的高容量电容，超长寿命超级电容器

具有快速充电/放电速率和长循环稳定性（> 50 000次循环）的超级电容器对于储能和移动电源具有吸引力。在本文中，开发了一种简便的策略来制造Fe ₂ O ₃ / FeS装饰的N，S掺杂的分级多孔碳杂化体。通过调节杨梅和硫酸铁之间的水热反应，可以很容易地控制其微观结构和组成。使用该反应制备的碳材料制成的超级电容器能够表现出出色的电容性能，具有超快的充电/放电速率（<1 s），超长的循环寿命（> 50000循环，80 A g ^-1），超高体积电容（1320.4˚F厘米^-3，0.1 A克^-1），以及高能量密度（100.9 W时千克^-1，221.9 w ^ H L ^-1）。出色的性能使其成为最佳的源自生物质的超级电容器之一。碳微球和纳米片复合材料的表面/边缘/骨架上的N和S共掺杂，再加上Fe ₂ O ₃ / FeS的快速氧化还原反应，可能会产生优异的电容性能。总的来说，这项研究为开发下一代可持续高性能储能装置提供了一条新途径。