3D-metal-embroidered electrodes:dreaming for next generation flexible and personalizable energy storage devices

3D金属绣花电极:下一代柔性、个性化的储能设备的理想电极

Flexible and Personalizable battery is a promising candidate for energy storage, but suffers from the weldablity and large-scale producibility of the electrode. To address the issues, we design a nickel foam catalyzed electroless deposition (NFED) derived 3D-metal-pattern embroidered electrodes. This is the first attempt to utilize this type of electrode in battery field. It is found that the current collector can be embroidered on any selected areas of any complex-shape electrodes, with high controllability and economical feasibility. As a result, the electronic conductivity of the flexible electrodes can be improved by nearly one order of magnitude, which can be easily and firmly weldded to the metal tab using the industry generic ultrasonic heating process. The embroidered electrodes could substantially promote the electrochemical performance under bending deformation, with both Li-S and Li-Li FePO4batteries as the models. This innovation is also suitable to embroider all the VIII group elements on any electrodes with personalized shapes, which is widely attractive for the development of next generation flexible and personalizable energy storage devices.

柔性且可个性化定制的电池是能量存储方面有前途的候选者,但是却面临电极焊接性较差、影响大规模生产的困扰.为了解决这些问题,本文设计了一种镍泡沫催化化学沉积(NFED)衍生的3D金属绣花电极.这是在电池领域利用这种类型电极的尝试.通过这种方法,可以在任何复杂形状电极的任何选定区域上"绣"出集流体,具有很高的可控制性和经济可行性.这类集流体可以将柔性电极的电子电导率提高近一个数量级,并且可以使用工业上常用的超声加热工艺容易牢固地焊接在金属接线片上.以Li-S和Li-Li Fe PO4电池为模型,绣花集流体电极在弯曲变形下可显著提高电化学性能.该方法适用于将所有VIII族元素"绣"在各种形状的任何电极上,可用于开发高性能的柔性能量存储设备.