Micro-Supercapacitors Sandwich-type covalent organic framework heterostructures feature alternating meso-/microporous nano-hourglass channels. These channels facilitate rapid proton transport through the mesopores while enhancing charge storage via ion enrichment in the intermediate microporous layer. Strategically adjusting the outer pore size further suppresses H+ overflow, thereby mitigating ion leakage for minimizing self-discharge. More in article number 2412642, Xinying Liu, Shanlin Qiao, and co-workers.
Xu et al. (Sun,) studied this question.