The ever-increasing interest in miniaturized Internet of Things devices and embedded electronics has given rise to a host of inquiries surrounding the need for safe, high performance energy storage devices. Solid-state 3D micro-supercapacitors based on ionogels provide a promising response to many of these pressing questions. Herein, leakage-free solid-state-like 3D micro-supercapacitors incorporating lithium and sodium salts added to 1-Ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide-based ionogels were investigated. The resulting micro-supercapacitors containing these lithium and sodium ions displayed energy densities of 10.2 and 9.5 µWh.cm⁻² at power densities of 1.1 and 1.0 mW.cm⁻², respectively. In those devoid of these alkaline ions, however, the energy density reached a mere 3 µWh.cm⁻² at the same power density, thereby validating the proposed strategy. The 3D interdigitated MnO₂ // MnO₂ micro-supercapacitors were cycled 50 000 times at 1.75 mA.cm⁻² with good capacitance retention (∼ 85 %). While performing under high temperatures (100°C), there was no evidence of electrolyte degradation, capacitance fading or electrolyte leakage.

对小型物联网设备和嵌入式电子设备的兴趣日益增加，引发了围绕安全、高性能储能设备需求的大量询问。基于离子凝胶的固态 3D 微型超级电容器为许多这些紧迫问题提供了有希望的回应。在此，研究了将锂盐和钠盐添加到 1-乙基-3-甲基咪唑双（三氟甲磺酰）亚胺基离子凝胶中的无泄漏固态类 3D 微型超级电容器。所得到的含有这些锂和钠离子的微型超级电容器在功率密度为 1.1 和 1.0 mW.cm ^{-2时显示出 10.2 和 9.5 µWh.cm -2的能量密度}， 分别。然而，在没有这些碱性离子的那些中，能量密度在相同的功率密度下仅达到 3 µWh.cm ^-2，从而验证了所提出的策略。3D 叉指型 MnO ₂ // MnO ₂微型超级电容器在 1.75 mA.cm ^-2下循环 50 000 次，具有良好的电容保持率（～ 85 %）。在高温 (100°C) 下执行时，没有迹象表明电解质退化、电容衰减或电解质泄漏。