Lithium-ion capacitors (LICs) are promising electrochemical energy storage devices with hybridization of the battery-type anode and capacitive-type cathode, bringing high energy density and high power density simultaneously in a single device. We report the extraction of activated carbon from the palmyra fruit, in-situ polymerization with polyaniline (PANI), and the making of different composite formulations with SnO₂ to be used as anode for LIC with palmyra fruit-derived activated carbon (PC) as the cathode. The SnO₂@PC@PANI electrode is restricted to 1 V vs. Li, which allows only the alloying reaction and eliminates the conversion process. An in-situ impedance study is performed to validate the formation and depletion of the solid electrolyte interface over the battery-type electrode upon cycling. Prior to the fabrication of the LIC, the SnO₂@PC@PANI is electrochemically pre-lithiated. The fabricated LIC with balanced mass loadings exhibits a mesmerizing electrochemical performance with a maximum energy density of ∼175 Wh kg^–1 at room temperature. The possibility of LIC in different climatic conditions is also analyzed by testing its electrochemical performance in different temperature conditions.

锂离子电容器 (LIC) 是一种很有前途的电化学储能装置，它混合了电池型阳极和电容型阴极，可在单个装置中同时带来高能量密度和高功率密度。我们报告了从巴尔米拉果实中提取活性炭，与聚苯胺 (PANI)原位聚合，以及使用 SnO ₂制备不同的复合配方，用作 LIC 的阳极，使用巴尔米拉果实衍生的活性炭 (PC) 作为阴极。SnO ₂ @PC@PANI 电极限制在 1 V vs. Li，这仅允许合金化反应并消除了转化过程。一个原地进行阻抗研究以验证循环时电池型电极上固体电解质界面的形成和消耗。在制造 LIC 之前，SnO ₂ @PC@PANI 是电化学预锂化的。制造的具有平衡质量负载的 LIC 表现出令人着迷的电化学性能，室温下的最大能量密度为 ∼175 Wh kg ^{–1 。}还通过测试其在不同温度条件下的电化学性能，分析了LIC在不同气候条件下的可能性。