Because the response of a specific defect species to aliovalent doping scales with the concentration of that defect species in the undoped system (eq. 9), Schottky disorder implies a much higher doping-response efficiency, η X , for V Li than for Li i -which is indeed the case for Li 3 OCl (cf. fig. ). This leads to [V Li ] decreasing much more rapidly than ] increases under subvalent doping. Schottky disorder also indicates a relatively high [V Li + Li i ] Frenkel pair formation energy, which means a strong enthalpic driving force for Frenkel-pair recombination when cooling from synthesis temperatures to room temperature. Both of the effects that cause ionic conductivity to decrease or only moderately increase in response to subvalent doping are therefore consequences of Li 3 OCl being a "Schottkydisordered" solid electrolyte. By extension, we therefore expect other principally Schottky-disordered solid electrolytes, including other antiperovskite solid electrolytes , to have analogous asymmetric doping responses.