How do environmental conditions influence the purchase of critical illness insurance, and why? The mechanism for any potential relationship between them has substantial welfare and policy implications. Prior literature has found a positive relationship between supplementary health insurance and...

Biomass-derived porous carbons (BD-PC) have evoked wide attention in the field of supercapacitors. However, the oxygen-containing groups (OFGs) in BD-PC bring a great threat to the structural stability of porous carbons in organic electrolyte at the voltage window higher than 2.7 V. Therefore,...