阴极
超级电容器
材料科学
阳极
储能
介孔材料
电池(电)
电化学
化学工程
电流密度
碳纤维
电极
纳米技术
无机化学
复合数
化学
复合材料
催化作用
有机化学
工程类
物理
物理化学
功率(物理)
量子力学
作者
Weiyi Sun,Lingli Xing,Bomian Zhang,Wenchao Shi,Jingke Ren,Xinyu Zhang,Fangyu Xiong,Qinyou An
标识
DOI:10.1016/j.jpowsour.2023.233052
摘要
Aluminum-based devices are promising candidates for the next generation of energy storage due to the advantages of high energy density, high safety, and low cost. The aluminum ion batteries (AIBs) are based on the electrochemical intercalation/deintercalation reactions against the electrodes, but the selection of the cathode is limited to the present. The cathode reactions of cation-type AIBs are plagued by the poor kinetics of solid-state diffusion from high charge density of Al3+ and anion-type AIBs show poor capacity due to the intercalation of large-sized chloroaluminate (AlCl4−) active ions into the cathode. Here, we deliberately adopted a hybrid capacitor-battery mechanism and employed a nitrogen-doped micro-mesoporous carbon sphere of a high specific area as the cathode and aluminum as the anode to construct an aluminum-based energy storage device. After optimization, it exhibits an excellent discharge capacity of 224 mA h g−1 at a current density of 300 mA g−1, and exceptional cycling performance with a discharge capacity as high as 114 mA h g−1 at 10 A g−1 after 35000 cycles. The ultra-high-performance aluminum-based hybrid supercapacitor (Al-HSC) may lead to a new direction for the development of aluminum-based energy storage devices.
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