High-strength Compressive strength 3 Corrosion resistance 3 High strength alloys 3 Mechanical properties 3 Broad application 2 Conducting hydrogels 2 Conductive hydrogel 2 Corrosion resistant alloys 2 Corrosive effects 2 Deformation 2 Degradation 2 Flexible displays 2 Graphene 2 Graphene oxides 2 High strength steel 2 Hydrogels 2 Ion-conducting 2 Lower density 2 Magnesium alloys 2 Microstructure 2 Polyvinyl alcohols 2 Salting out 2 Simple++ 2 Sodium chloride 2 Soft robotics 2 Strain sensors 2 Structural applications 2 Zinc alloys 2 conductive hydrogels 2