Aqueous Inks of Pristine Graphene for 3D Printed Microsupercapacitors with High Capacitance.
Aqueous Inks of Pristine Graphene for 3D Printed Microsupercapacitors with High Capacitance.
复制标题
DOI：
10.1021/acsnano.1c06535
复制
发表时间：
2021-09-28
期刊：
影响因子：
17.1
通讯作者：
Mattevi C
中科院分区：
文献类型：
--
作者：
Tagliaferri S;Nagaraju G;Panagiotopoulos A;Och M;Cheng G;Iacoviello F;Mattevi C
三维（3D）打印作为制造高性能能量存储设备的可持续途径越来越重要。它能够以不同的长度尺度简化制造具有可编程几何形状的设备，这些长度尺度可低至微米尺寸。小型化储能器件是实现能源自主的片上技术的基本组件。在这项工作中，我们展示了3D打印的微型超级电容器电极，这些电极来自原始石墨烯的水性油墨，而不需要高温处理和功能添加剂。具有1370 S m-1的固有电导率和合理设计的结构，对称的微型超级电容器表现出异常的面积电容1.57 F cm-2在2 mA cm-2，其在重复的电压保持测试后保持超过72%。面功率密度（0.968 mW cm-2）和面能量密度（51.2 μWh cm-2）优于先前报道的3D或喷墨打印的碳基超级电容器。此外，与凝胶电解质组合的无电流收集器的叉指型微型超级电容器提供接近具有类液体离子传输性质的装置之一的电化学性能。我们的研究提供了一种可持续和低成本的方法来制造具有可编程几何形状的高效储能设备。
Three-dimensional (3D) printing is gaining importance as a sustainable route for the fabrication of high-performance energy storage devices. It enables the streamlined manufacture of devices with programmable geometry at different length scales down to micron-sized dimensions. Miniaturized energy storage devices are fundamental components for on-chip technologies to enable energy autonomy. In this work, we demonstrate 3D printed microsupercapacitor electrodes from aqueous inks of pristine graphene without the need of high temperature processing and functional additives. With an intrinsic electrical conductivity of ∼1370 S m–1 and rationally designed architectures, the symmetric microsupercapacitors exhibit an exceptional areal capacitance of 1.57 F cm–2 at 2 mA cm–2 which is retained over 72% after repeated voltage holding tests. The areal power density (0.968 mW cm–2) and areal energy density (51.2 μWh cm–2) outperform the ones of previously reported carbon-based supercapacitors which have been either 3D or inkjet printed. Moreover, a current collector-free interdigitated microsupercapacitor combined with a gel electrolyte provides electrochemical performance approaching the one of devices with liquid-like ion transport properties. Our studies provide a sustainable and low-cost approach to fabricate efficient energy storage devices with programmable geometry.
登录
查看更多内容
影响因子：
8.3
作者：
Gnanasekaran, K.;Heijmans, T.;Friedrich, H.
通讯作者：
Friedrich, H.
影响因子：
17.1
作者：
Aderyani, Sarah;Shah, Smit A.;Ardebili, Haleh
通讯作者：
Ardebili, Haleh
影响因子：
19
作者：
Cheng, Meng;Ramasubramanian, Ajaykrishna;Shahbazian-Yassar, Reza
通讯作者：
Shahbazian-Yassar, Reza
影响因子：
29.4
作者：
Lacey, Steven D.;Kirsch, Dylan J.;Hu, Liangbing
通讯作者：
Hu, Liangbing
影响因子：
13.3
作者：
Cao, Xiehong;Shi, Yumeng;Zhang, Hua
通讯作者：
Zhang, Hua