Hirofumi Ishii

Tailoring electrolyte salt concentration to achieve reversible Li storage in pure-Ni layered oxide

Abstract Modulating electrolyte formulation is an efficient strategy to mitigate side reactions at the electrode/electrolyte interface and thereby enhance the cycling stability of lithium batteries. Herein, the effects of electrolyte salt concentration on the solution structure a...

Weak Ferromagnetism in NiS 2 under Nanocrystallization

Structurally well-ordered NiS 2 nanocrystals with an average diameter of 27.0 ± 6.5 nm retain the bulk-like two-step antiferromagnetic transitions, as shown by magnetization and heat-capacity measurements. Below the lower transition, the nanocrystals exhibit a hysteretic ferromag...