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Which diffusion barrier mechanism prevents lithium dendrite formation during solid-state electrolyte ionic transport?

A)Mechanical rigidity resisting growth
B)Electronic insulation blocking reduction
C)Electrochemical polarization inhibiting plating
D)Thermal conductivity dissipating hotspots

💡 Explanation

During lithium plating, a mechanically rigid solid-state electrolyte prevents dendrite propagation by physically blocking filament growth due to intrinsic strength because of an ionic structure, increasing the overpotential required for lithium penetration. Therefore, rigidity inhibits dendrites, rather than electrical, electrochemical, or thermal effects, which impact ion mobility but not structure.

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