Esnek elektrot araştırmalarında yeni ilerleme
Çin Bilimler Akademisi Dalian Kimyasal Fizik Enstitüsü Enerji Depolama Teknolojisi Araştırma Departmanından araştırmacı Li Xianfeng, araştırmacı Zhang Huamin ve yardımcı araştırmacı Zhang Hongzhang, yüksek-yük esnek kendilik{{ araştırmalarında yeni ilerleme kaydettiler. 1}}destek elektrotları. İlgili çalışma Advanced Functional Materials (Adv.Funct .Mater.) tarihinde yayınlandı.
Nanoscale active material particles have great potential in electrochemical applications due to their high specific surface and short ion/electron transport paths. However, as the loading of nanoparticles on the electrode increases, the particles are easily detached from the electrode, which limits its practical application. In 2016, the team first reported the preparation of "triple-continuous" electrodes (Adv. Funct. Mater.) with excellent bonding strength and electron/ion mass transfer by "phase inversion" method, which solved the above problems well , realizing the flexibility of the electrode. On this basis, the research team realized the self-supporting and high active material loading (such as sulfur 24 mg/cm2) of the flexible electrode in 2017.
On the basis of the above research results, the team further developed the overall current collection technology for flexible self-supporting electrodes. This technology greatly improves the electronic conductivity of the electrode surface and interior by "in situ chemical deposition" of a three-dimensional continuous metal-based current collector network on the electrode surface and interior. In addition, the preparation cost of the current collecting network is low and it is easy to enlarge, and the areal density of the current collecting network is much lower than that of traditional aluminum foil, copper foil, nickel foam, etc., which can further reduce the overall weight of the device and lay a solid foundation for the practical application of high specific energy flexible batteries. foundation.
