Traditional elastomers are mostly dielectrics; existing conductive elastomers are conductive composites with electric conductors. Herein, we introduce a series of ionic conducting elastomers (ICE) by salt in polymer strategy. The ICEs possess good stretchability, transparency and ionic conductivity. Moreover, the ICEs exhibit very high stability in air, under high temperature and voltage, with excellent adhesion properties and no corrosive effects to metal electrodes. Touch sensors are fabricated using these ICEs—impedance spectra and impedance complex plane are tested and analyzed to clarify different stimulus of the touch sensors. These ICEs provide possibilities for flexible electronics and soft machines.

Hybrid nanostructures based on graphene and transition metal oxides hold great promise as high‐performance electrode materials for next‐generation lithium‐ion batteries. In this work, the rational design and fabrication of NiCo2O4 nanosheets supported on reduced graphene oxide (denoted as rGO/NiCo2O4) is presented as a novel anode material for highly efficient and reversible lithium storage. A solution method is applied to grow Ni‐Co precursor nanosheets on rGO, in which the addition of trisodium citrate is found crucial to guide the formation of uniform Ni‐Co precursor nanosheets. Subsequent thermal treatment results in formation of crystalline NiCo2O4 nanosheets on rGO without damaging the morphology. The interconnected NiCo2O4 nanosheets form hierarchically porous films on both sides of rGO. Such a hybrid nanostructure would effectively promote the charge transport and withstand volume variation upon prolonged charge/discharge cycling. As a result, the rGO/NiCo2O4 nanocomposite demonstrates high reversible capacities of 954.3 and 656.5 mAh g–1 over 50 cycles at current densities of 200 and 500 mA g–1 respectively, and remarkable capacity retention at increased current densities.

Construction of ultrafine ZnSe nanoparticles on/in amorphous carbon hollow nanospheres with high-power-density sodium storage, Nano Energy (2019), doi:

A high-performance electrode for supercapacitors is designed and synthesized by growing electroactive NiCo2 O4 nanosheets on conductive Ni nanofoam. Because of the structural advantages, the as-prepared Ni@NiCo2 O4 hybrid nanostructure exhibits significantly improved electrochemical performance with high capacitance, excellent rate capability, and good cycling stability.