Densification behavior of nano-agglomerate powder during pressureless sintering of Fe-Ni nanopowder was investigated in terms of diffusion kinetics and microstructural development. To understand the role of agglomerate boundary for sintering process, densification kinetics of Fe-Ni nano-agglomerate powder with different agglomerate size was investigated. It was found that activation energy for densification process was lower in the small-sized agglomerate powder. The increase in the volume fraction of inter-agglomerate boundary acting as high diffusion path might be responsible for the enhanced diffusion process.
Aqueous zinc-ion batteries (ZIBs), due to sluggish Zn2+ diffusion kinetics, continue to face challenges in terms of achieving superior high rate, long-term cycling and low-temperature properties. Herein, K+ pre-intercalated layered...
We develop a new aluminum graphite tri-ion (Li+/PF6−/BF4−) battery configuration (AGTIB) using an anion-hybridization strategy with fast diffusion kinetics. The AGTIB has a high rate performance with a 90.5 mA h g−1 capacity at 15C and good cycling stability for over 500 cycles at 5C.