In　the　green　energy　and　carbon-neutral　technology,　electrochemical　energy　storage　devices　have　received　continuously　increasing　attention　recently.　However,　due　to　the　unavoidable　volume　expansion/shrinkage　of　key　materials　or　irreversible　mechanical　damages　during　application,　the　stability　of　energy　storage　and　delivery　as　well　as　the　lifetime　of　these　devices　are　severely　shortened,　leading　to　serious　performance　degradation　or　even　safety　issues.　Therefore,　the　utilization　of　self-healable　gels　into　electrochemical　energy　storage　devices,　such　as　electrodes,　binders,　and　electrolytes,　is　proven　as　an　effective　method　to　realize　long-term　stable　operation　of　these　devices　via　the　self-repairing　of　mechanical　and　electrochemical　characteristics.　Herein,　this　review　first　summarizes　the　feature　and　fabrication　of　different　gels,　paying　special　attention　to　hydrogels,　organohydrogels,　and　ionogels.　Then,　basic　concepts　and　figure　of　merit　of　self-healable　gels　are　analyzed　with　a　detailed　discussion　at　the　healing　mechanisms,　from　reversible　dynamic　bonds　to　physical　molecular　diffusion,　and　to　external　healing　trigger.　Then　we　introduce　all　the　important　parts　of　electrochemical　energy　storage　devices,　which　could　be　replaced　by　healable　gels　to　enhance　the　durability,　including　electrodes,　binders,　and　electrolytes.　Finally,　the　critical　challenges　and　future　perspectives　regarding　the　future　development　of　healable　gels　based　high-performance　electrochemical　energy　storage　devices　or　electronics　are　provided.