IFW Dresden, Institute for Complex Materials, Helmholtzstrasse 20, D-01069 Dresden, Germany.
Nat Commun. 2013;4:1485. doi: 10.1038/ncomms2481.
Rechargeable batteries using organic electrodes and sodium as a charge carrier can be high-performance, affordable energy storage devices due to the abundance of both sodium and organic materials. However, only few organic materials have been found to be active in sodium battery systems. Here we report a high-performance sodium-based energy storage device using a bipolar porous organic electrode constituted of aromatic rings in a porous-honeycomb structure. Unlike typical organic electrodes in sodium battery systems, the bipolar porous organic electrode has a high specific power of 10 kW kg(-1), specific energy of 500 Wh kg(-1), and over 7,000 cycle life retaining 80% of its initial capacity in half-cells. The use of bipolar porous organic electrode in a sodium-organic energy storage device would significantly enhance cost-effectiveness, and reduce the dependency on limited natural resources. The present findings suggest that bipolar porous organic electrode provides a new material platform for the development of a rechargeable energy storage technology.
使用有机电极和钠作为电荷载体的可充电电池可以成为高性能、经济实惠的储能设备，因为钠和有机材料都很丰富。然而，只有少数有机材料被发现对钠离子电池系统具有活性。在这里，我们报告了一种使用由多孔蜂窝状结构中的芳环组成的双极多孔有机电极的高性能钠离子储能装置。与典型的钠离子电池系统中的有机电极不同，双极多孔有机电极具有 10kWkg-1 的高比功率、500Whkg-1 的比能量以及超过 7000 次循环寿命，在半电池中保留了初始容量的 80%。在钠离子-有机储能装置中使用双极多孔有机电极将显著提高成本效益，并减少对有限自然资源的依赖。本研究结果表明，双极多孔有机电极为可充电储能技术的发展提供了一种新材料平台。
