This paper investigates the effects of oil price shocks and policy uncertainty on the stock returns of clean energy companies. We use a structural vector autoregressive (VAR) model to separate demand and supply shocks in the global crude oil market from 2001 to 2018. We find that oil supply...

In the "carbon-neutral" context, Lithium-ion batteries are widely used in various fields, and the need for efficient and environmentally friendly recycling of spent lithium-ion batteries is becoming increasingly urgent. However, current direct regeneration methods often lead to non-uniform...

We study the effects of unscheduled service in an outpatient clinic, where physicians have discretion to admit walk-in patients who are not scheduled in advance when all appointment slots are fully booked. Admitted patients are appended to the end of treatment queues. Unscheduled service is a...

Inorganic CsPbX 3 (X=Cl, Br, I) perovskite without volatile organic components in crystal lattice, has outstanding thermal stability and broad application prospects. Various strategies have been adopted to restrain the notorious phase transition process (from cubic to orthorhombic phase) for...

Iron nitride is a promising anode material with ultrahigh theoretical capacity and excellent electrical conductivity. Nevertheless, due to the poor stability of metal nitrides on account of their amorphous and powdering in the long-term charging and discharging process, their electrochemical...