The Journal of Physical Chemistry C 124(31) 16758-16762 2020年8月
The research and development of secondary batteries, such as the lithium-ion batteries, have been widely conducted. Most electrodes are of composite type and comprise an active material, a conductive additive, and a binder. To achieve a precise an...
Takayuki Konya   Yuji Shiramata   Tatsuya Nakamura   
BUNSEKI KAGAKU 68(10) 793-800 2019年10月
An electrochemical cell with a specifically designed X-ray window was fabricated in order to evaluate the structural evolution of the cathode material under the operating condition. It enabled us to obtain strong signals from a positive electrode ...
IEEE TRANSACTIONS ON MAGNETICS 36(5) 3415-3417 2000年9月
Polycrystalline hexagonal ferrites (Y, Z and W-phases) were prepared by the usual ceramic sintering. Their complex permeability spectra were natural resonance type, and numerically separated into spin rotational and domain wall motion components. ...
Li-Mn spinel oxide cathode materials were prepared by annealing of Li-Mn spinel oxide containing an oxygen deficiency, which were synthesized by high-temperature calcination, under various oxygen pressures. The effects of the annealing conditions ...
Three series of polycrystalline spinel ferrite, Ni-Zn ferrite, Mg-Zn ferrite and Ni-Zn-Cu ferrite, were prepared by the usual ceramic sintering method. The complex permeability spectra of each were measured. The low-frequency permeability increase...