Affiliation:
1. Department of Materials Science and Engineering Chungnam National University Daejeon 34134 Republic of Korea
2. Department of Energy and Materials Engineering Dongguk University Seoul 04620 Republic of Korea
3. Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
Abstract
AbstractHalide perovskite, renowned for its multifunctional properties, shows considerable promise for realizing self‐charging power systems. In this study, a lead‐free methylammonium bismuth iodide (MA3Bi2I9) perovskite is used to create a self‐charging power unit (SPU). This involves constructing a hybrid piezoelectric‐triboelectric nanogenerator (Hybrid‐TENG) and utilizing MA3Bi2I9 for energy storage as an anode in a lithium‐ion battery (LIB). Initially, MA3Bi2I9 nanorods are synthesized and composited with a polystyrene‐block‐poly(ethylene‐ran‐butylene)‐block‐polystyrene polymer. The dielectric and mechanical properties of composite films having perovskite loading content are investigated. The optimized Hybrid‐TENG exhibits superior performance, generating a voltage of 537 V, current density of 13.2 µA cm−2, and maximum power density of 3.04 mW cm−2, which can be attributed to the high piezoelectric coefficient of MA3Bi2I9 nanorods (≈20.6 pm V−1). A MA3Bi2I9 thin film, serving as an electrode in LIB, demonstrates a high specific capacity of 2378.9 mAh cm−3 (578.8 mAh g−1) with a capacity retention of ≈87.5% over 100 cycles, underscoring its stable performance. Furthermore, a Hybrid‐TENG is employed to charge the MA3Bi2I9‐based LIB, thus realizing an SPU for driving portable electronics. This study highlights the promising potential of perovskites for developing efficient nanogenerators and LIBs, paving the way for sustainable energy solutions in small‐scale electronics.
Funder
National Research Foundation of Korea
Ministry of Education
Cited by
1 articles.
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