Stretchable energy-storage devices receive considerable attention due to their promising applications in future wearable technologies. However, they currently suffer from many problems, including low utility of active materials, limited multidirectional stretchability, and poor stability under stretched conditions. In addition, most proposed designs use one or more rigid components that fail to meet the stretchability requirement for the entire device. Here, an all-stretchable-component sodium-ion full battery based on graphene-modified poly(dimethylsiloxane) sponge electrodes and an elastic gel membrane is developed for the first time. The battery exhibits reasonable electrochemical performance and robust mechanical deformability; its electrochemical characteristics can be well-maintained under many different stretched conditions and after hundreds of stretching–release cycles. This novel design integrating all stretchable components provides a pathway toward the next generation of wearable energy devices in modern electronics.
Bibliographical noteFunding Information:
H.L. and Y.D. contributed equally to this work. G.Y. acknowledges the funding support from the Welch Foundation Grant F-1861, ACS Petroleum Research Fund award (55884-DNI10), and Alfred P. Sloan Research Fellowship. X.Z. acknowledges financial support from the National Program on Key Basic Research Project of China (973 Program, No. 2014CB239701) and National Natural Science Foundation of China (Nos. 51372116 and 51504139). H.L. acknowledges the Funding for Outstanding Doctoral Dissertation in NUAA (BCXJ14-10), Funding of Jiangsu Innovation Program for Graduate Education (KYLX_0255), Fundamental Research Funds for the Central Universities, and the Priority Academic Program Development of Jiangsu Higher Education Institutions. C.J.E. would like to acknowledge start-up funding from the University of Minnesota College of Science and Engineering and the Department of Chemical Engineering and Materials Science and partial financial support from the Piercy Professorship.
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- 2D materials
- flexible electronics
- sodium-ion batteries
- stretchable batteries
- wearable devices