Two of the most promising current trends in supercapacitor research, (i) the development of biomass based carbon electrodes, and (ii) the transition to solid thin flexible form factors via polymer electrolytes are combined and investigated. A high surface area (3312 m² g⁻¹) mesoporous activated carbon was synthesized from chitosan biomass and showed excellent capacitive behaviour in a range of acidic, neutral, and alkaline liquid electrolytes. The performance in the neutral Li₂SO₄ electrolyte system was particularly promising with the chitosan AC electrodes showing a high capacitance (264 F g⁻¹) similar to the values in acidic and alkaline electrolytes but with a much larger 1.8 V potential window. The chitosan AC also proved compatible with a series of solid polymer electrolytes through a detailed comparison in which solid-state chitosan supercapacitor devices were shown to closely mimic the capacitance and high rate performance of their liquid counterparts. This is an important finding as it demonstrates that high surface area, intricately porous activated carbon networks can still be readily accessible to solid electrolytes. Combining the chitosan AC with a Li₂SO₄-polyacrylamide (PAM) solid electrolyte enabled the fabrication of ultra-thin (<0.38 mm) supercapacitor devices which demonstrated a capacitance close to 3 times greater than analogues prepared with a commercially available microporous AC (YP-50). These chitosan devices also demonstrated high volumetric energy density (1.6 mWh cm⁻³) and power density (0.8 W cm⁻¹) comparable to state-of-the-art SC devices utilizing much more expensive materials. This material system represents a simple and cost effective approach for the design of next-generation solid thin, flexible energy storage devices.

超级电容器研究中两个最有希望的当前趋势是，（i）基于生物质的碳电极的开发，以及（ii）通过聚合物电解质向固态薄柔性形式的转变，并进行了研究。由壳聚糖生物质合成高表面积（3312 m ²  g ^-1）的介孔活性炭，并在一系列酸性，中性和碱性液体电解质中表现出出色的电容性能。壳聚糖交流电极显示出高电容（264 F g ^-1），在中性Li ₂ SO ₄电解质体系中的性能特别有前途）类似于酸性和碱性电解液中的值，但具有更大的1.8 V电位窗口。壳聚糖AC还通过详细的比较证明与一系列固体聚合物电解质兼容，在该比较中，固态壳聚糖超级电容器器件显示出与液体同类产品的电容和高倍率性能紧密相仿的特性。这是一个重要发现，因为它表明高表面积，错综复杂的多孔活性炭网络仍然可以很容易地被固体电解质所接近。将壳聚糖AC与Li ₂ SO _4结合-聚丙烯酰胺（PAM）固体电解质能够制造超薄（<0.38 mm）超级电容器器件，该器件的电容量比用市售微孔AC（YP-50）制备的类似物大将近3倍。这些壳聚糖装置还显示出高体积能量密度（1.6 mWh cm ^-3）和功率密度（0.8 W cm ^-1），与使用昂贵得多的材料的最新SC装置相当。该材料系统代表了一种用于设计下一代固体薄型，柔性储能装置的简单且经济高效的方法。