Amino Group-Aided Efficient Regeneration Targeting Structural Defects and Inactive FePO Phase for Degraded LiFePO Cathodes.

It is urgent to develop efficient recycling methods for spent LiFePO cathodes to cope with the upcoming peak of power battery retirement. Compared with the traditional metallurgical recovery methods that lack satisfactory economic and environmental benefits, the direct regeneration seems to be a promising option at present. However, a simple direct lithium replenishment cannot effectively repair and regenerate the cathodes due to the serious structural damage of the spent LiFePO.

Origin of the Anomalous Electrical Transports in Quasi-One-Dimensional TaNiSe.

Exploration of exotic transport behavior is of great interest and importance for revealing the properties of the CDW phase of quasi-one-dimensional TaNiSe. We report the anisotropic electrical transport properties of TaNiSe single crystals in the CDW phase. The anisotropic constant (γ = ρ/ρ) increased rapidly at = 60 K upon cooling.