An ever-increasing demand for energy coupled with environmental pollution associated with conventional energy production continues to drive the search for alternative renewable energy storage solutions. In this regard, a high surface area (1841 m² g⁻¹), hierarchically porous (∼1.18 cm³ g⁻¹) and self-inherited nitrogen (2.1 at.wt%) based activated carbon are obtained from Artocarpus heterophyllus seed derived starch as a result of ZnCl₂ chemical activation. A flexible, conductive, thermally stable and bio-degradable biopolymer electrolyte film is prepared from Manihot esculenta starch powder. These eco-friendly hierarchically porous architectured carbon electrode and flexible biopolymer electrolytes are employed as significant components in a coin cell-based all-solid-state supercapacitor. The resulting device delivers a high specific capacitance of 240 Fg⁻¹ at 0.5 mA with 97% coulombic efficiency over 2000 cycles. In addition, the device provided excellent specific energy (17 Wh kg⁻¹) and specific power (3823 W kg⁻¹). Interestingly, the starch derived biopolymer electrolyte film, when buried under soil, shows a favourable natural rate of degradation. Therefore, this fabricated electric double layer capacitor can be used as a promising device with little to no potential environmental harm.

对能源的需求不断增长，加上与常规能源生产相关的环境污染，继续推动人们寻找替代性可再生能源存储解决方案。在这方面，高的表面积（1841米² 克^-1），分级多孔（~1.18厘米³ 克^-1）和自我继承氮（2.1 at.wt％）活性炭是从获得波罗蜜衍生种子ZnCl ₂化学活化的结果是淀粉。由Manihot esculenta制备的柔性，导电，热稳定且可生物降解的生物聚合物电解质膜淀粉粉。这些生态友好的分层多孔结构碳电极和柔性生物聚合物电解质被用作基于纽扣电池的全固态超级电容器的重要组成部分。所得的器件在0.5 mA时可提供240 Fg ^-1的高比电容，在2000次循环中具有97％的库仑效率。另外，该装置提供了优异的比能量（17 Wh kg ^-1）和比功率（3823 W kg ^-1）。有趣的是，当淀粉衍生的生物聚合物电解质膜埋在土壤中时，表现出有利的自然降解速率。因此，这种制造的双电层电容器可以用作有希望的器件，几乎没有或没有潜在的环境危害。