Dalian institute of chemical physics, Chinese academy of sciences, energy storage technology research, researcher Li Xianfeng, researcher zhang huamin, associate researcher Zhang Hongzhang team at high load flexible self supporting new progress in research on electrode, related work published in the journal of advanced functional materials.
Nanoscale active particles have great potential in the field of electrochemistry because of their shorter than surface, ion/electron transport path.However, with the increase in the number of nano-particles on the electrode, the particles are easily removed from the electrode, limiting its practical application.The team reported for the first time in 2016 to "phase inversion method of the preparation of excellent adhesive strength and electronic/ionic mass transfer ability of the" three consecutive "electrode (Adv. Funct. Mater.), to solve the above problems, achieve the flexibility of the electrode.On this basis, the research team realized the self-supporting and highly active material of the flexible electrode (such as sulphur 24 mg/cm2) in 2017.
On the basis of the above research results, the team further developed the integrated current collection technology of flexible self-supporting electrode.The technology greatly improves the electron conduction performance of the electrode surface and the interior by means of the three-dimensional continuous metal base collector network on the electrode surface and the internal "in-situ chemical deposition".Collecting network and the preparation of low cost, easy to enlarge, collecting network density is far lower than the traditional aluminum foil and copper foil, foam nickel, etc., can further reduce the overall weight of the device, has paved the way for the ratio of the practical application of flexible battery energy.