In　this　paper,　a　time-frequency　model　is　developed　to　investigate　the　coupling　between　Li　diffusion　and　material　stress　in　composite　electrode　of　lithium-based　all-solid-state　battery　(ASSB)　in　comparison　with　porous　electrode　of　lithium-ion　battery　(LIB).　The　overpotential　and　pore　wall　flux　are　calculated　and　analyzed　based　on　the　developed　model　in　the　time　domain　considering　the　diffusion　induced　stress.　Resorting　to　electrochemical　impedance　spectroscopy　(EIS),　the　characteristics　of　coupling　effects　on　different　electrodes　are　analyzed　and　compared　based　on　the　developed　coupled　model　in　the　frequency　domain.　Numerical　calculations　result　in　the　following　conclusions:　(i)　composite　electrode　of　ASSB　can　generate　higher　compressive　stress　during　the　discharge　process　than　porous　electrode　(LIB)　due　to　the　extra　constraint　from　the　solid　electrolyte;　(ii)　the　stress　gradient　can　assist　Li　diffusion　from　the　surface　to　the　center　of　AM　particle　and　compressive　stress　increases　overpotential　and　pore　wall　flux;　(iii)　the　pore　wall　flux　in　composite　electrode　is　higher　than　that　in　porous　electrode,　leading　to　a　higher　Li　concentration　in　composite　electrode　than　porous　electrodes,　and　(iv)　high　discharge　rate　and　small　radius　of　AM　particle　can　enhance　the　stress　gradient.　The　joint　time-frequency　analysis　proves　that　the　higher　compressive　stress　can　induce　higher　mechanical　capacitance　and　the　smaller　particle　is　more　beneficial　to　Li　diffusion.　The　insight　obtained　in　present　work　should　be　able　to　benefit　design　of　composite　electrodes　for　all-solid-state　lithium　batteries.　©　2024