A 3D printing approach is first developed to fabricate quasi‐solid‐state asymmetric micro‐supercapacitors to simultaneously realize the efficient patterning and ultrahigh areal energy density. Typically, cathode, anode, and electrolyte inks with high viscosities and shear‐thinning rheological behaviors are first prepared and 3D printed individually on the substrates. The 3D printed asymmetric micro‐supercapacitor with interdigitated electrodes exhibits excellent structural integrity, a large areal mass loading of 3.1 mg cm⁻², and a wide electrochemical potential window of 1.6 V. Consequently, this 3D printed asymmetric micro‐supercapacitor displays an ultrahigh areal capacitance of 207.9 mF cm⁻². More importantly, an areal energy density of 73.9 µWh cm⁻² is obtained, superior to most reported interdigitated micro‐supercapacitors. It is believed that the efficient 3D printing strategy can be used to construct various asymmetric micro‐supercapacitors to promote the integration in on‐chip energy storage systems.

中文翻译：

---

具有超高面能量密度的3D打印拟固态非对称微型超级电容器

首先开发了一种3D打印方法来制造准固态非对称微型超级电容器，以同时实现有效的构图和超高的面能密度。通常，首先要制备具有高粘度和剪切稀化流变行为的阴极，阳极和电解质墨水，并分别在基材上进行3D打印。带指状电极的3D打印不对称微型超级电容器具有出色的结构完整性，3.1 mg cm ^-2的大面积质量负载和1.6 V的宽电化学势能窗口。因此，此3D打印不对称微型超级电容器具有超高的面积电容为207.9 mF cm ^-2。更重要的是，面能量密度为73.9 µWh cm ^-2获得的性能优于大多数报道的交叉指型超级电容器。人们认为，有效的3D打印策略可用于构造各种不对称的微型超级电容器，以促进片上储能系统的集成。