Block copolymer electrolyte (BCPE) is one of the most attractive alternatives to traditional liquid electrolytes in lithium-ion batteries. A series of relatively narrowly distributed tablet-bottlebrush block copolymer electrolytes having mesogen-jacketed...
Highly stretchable and conductive ionogels have great
potential
in flexible electronics and soft robotic skins. However, current ionogels
are still far from being able to accurately duplicate the mechanically
responsive behavior of real human skin. Furthermore, durable robotic
skins that are applicable under harsh conditions are still lacking.
Herein, a strong noncovalent interaction, ionic clusters, is combined
with hydrogen bonds to obtain a physically cross-linked ionogel (PCI).
Benefiting from the strong ionic bonding of the ionic cluster, the
PCI shows strain-stiffening behavior similar to that of human skin,
thus enabling it to have a perception-strengthening ability. Additionally,
the strong ionic clusters can also ensure the PCI remains stable at
high temperatures. Even when the temperature is raised to 200 °C,
the PCI can maintain the gel state. Moreover, the PCI exhibits high
transparency, recyclability, good adhesion, and high conductivity.
Such excellent features distinguish the PCI from ordinary ionogels,
providing a new way to realize skin-like sensing in harsh environments
for future bionic machines.
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