Bioinspired Starch‐Polyiodide Electrolytes for Self‐Healing Lithium‐Metal Interfaces and Stable Photoelectrochemical Energy Storage
Abstract
ABSTRACT The development of high‐energy‐density power sources with integrated energy harvesting capabilities is crucial for advancing wearable electronics. Herein, inspired by the homeostatic ion regulation mechanisms of plant roots in dynamic chemical environments, we developed a biomimetic starch‐polyiodide solid polymer electrolyte for constructing an integrated photo‐rechargeable energy storage system. The incorporation of functionalized starch‐polyiodides reconfigures the PVDF matrix topology, modulates the all‐trans (TTTT) conformation and anchors anions, thereby optimizing lithium‐ion transport and enhancing ionic conductivity, while enabling interfacial dead‐lithium self‐healing at the anode and defect passivation of the photoelectrochemical storage cathode (PSC). In situ characterization and theoretical calculations revealed that the additive facilitated multi‐electron transfer and formed a functional buffer layer, which synergistically stabilized the lithium metal anode interface while suppressing ion migration at the PSC. This mechanism established a robust solid electrolyte interphase and improved the overall energy storage efficiency of the integrated device. The resulting flexible integrated device demonstrated outstanding performance, retaining 85% capacity and 95.2% energy efficiency after 450 cycles at 1 C while preserving superior mechanical flexibility and efficient photo‐electric conversion. This work provides a novel strategy for developing flexible energy storage systems that integrate high ionic conductivity, interfacial stability, and photo‐electrochemical synergy.
Article Details
Authors (11)
Rong‐Hao Wang
School of Engineering Science Division of Nanomaterials & Chemistry Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) University of Science and Technology of China Hefei Anhui People's Republic of China
Weiyi Wang
Division of Energy Conversion & Storage, Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD), School of Engineering Science
Jing‐Jie Song
Division of Energy Conversion & Storage Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) School of Engineering Science University of Science and Technology of China Hefei China
Jun‐Hao Liu
Division of Energy Conversion & Storage Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) School of Engineering Science University of Science and Technology of China Hefei China
Jia‐Hao Ni
Division of Energy Conversion & Storage Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) School of Engineering Science University of Science and Technology of China Hefei China
Shijie Xiong
Wei Hu
Gang Pei
Liang Yue
Netanel Shpigel
Department of Chemical Sciences, Ariel University
Li‐Feng Chen
School of Engineering Science Division of Nanomaterials & Chemistry Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD) University of Science and Technology of China Hefei Anhui People's Republic of China