Micro-supercapacitors are attracting increasing attention due to their potential applications in multiple real-world energy scenarios such as wearable electronic devices, powering the internet of things, and medical applications. While tremendous efforts are being made in the performance enhancement, one of the bottleneck issues inhibiting their upscaling is the complicated manufacturing process. In this issue of Joule, Bruce Dunn and colleagues demonstrated a fully processable micro-supercapacitor engaging a photopatternable hydroxide ion conducting solid electrolyte, which is thermally and dimensionally stable with a high conductivity of 10 mS cm⁻¹.The micro-supercapacitor composites of VN and NiCo₂O₄ electrodes and the [AMIM][OH]/SU-8 hydroxide-conducting solid electrolyte show high areal capacitance of 250 mF cm⁻² at 20 mV s⁻¹ sweep rate, which is one of the highest performances among reported results.

微型超级电容器因其在可穿戴电子设备、为物联网供电和医疗应用等多种现实能源场景中的潜在应用而受到越来越多的关注。虽然在性能提升方面做出了巨大努力，但阻碍其升级的瓶颈问题之一是复杂的制造工艺。在本期《焦耳》中，Bruce Dunn 及其同事展示了一种完全可加工的微型超级电容器，该电容器采用可光图案化的氢氧离子传导固体电解质，该固体电解质具有热和尺寸稳定性，具有 10 mS cm ^-1的高电导率。 VN 的微型超级电容器复合材料和镍钴₂ O ₄电极和 [AMIM][OH]/SU-8 氢氧化物导电固体电解质在 20 mV s ^-1扫描速率下显示出 250 mF cm ^{-2 的}高面电容，这是报告结果中性能最高的之一。