| 研究実績の概要 |
In this year, we developed different continuous mesoporous metals (Cu and Ni etc.) films, alloy (CuAu etc.) films, and multilayer metal film as 3D current collector for lithium anode by soft-template method with electrochemical deposition. In a typical procedure, block copolymer and metal salt were dissolved in specific solvent successively and used as electrolyte. Then programmed electrodepostion of mesoporous metal/alloy films were carried out with an electrochemical setup at a constant potential.
As another achievement, we demonstrated a solid/solid interfacial engineering method by atomic layer deposition (ALD) of Al2O3 on solid polymer electrolyte (SPE) surface. Electrochemical measurements indicated that the the ALD-Al2O3 coating was effective in suppressing the growth of lithium dendrite for over 500 h.
|
| 今後の研究の推進方策 |
We will prepare bimetal metal-organic frameworks (BiMOF)-derived porous carbon through a self template-directed synthesis strategy followed by high temperature pyrolysis. In a typical procedure, bimetal (e.g., Zn coupled with Ni, Co, Fe) oxide, carbonate and hydroxide are used the metal sources and templates to induce the growth of nanostructured BiMOFs. Both morphology and composition of BiMOFs can be controlled by choosing different templates and adjusting reaction conditions. Sulfur electrode will be prepared by a melt diffusion method. Electrochemical performances of sulfur cathode will be evaluated through cyclic voltammetry (CV), galvanostatic charge/discharge, and EIS. The effects of morphology and porosity of carbon-based nano-host on the performance of sulfur cathode will be systematically studied.
|
