The utilization of piezoelectric nanogenerator(PENG)based on halide perovskite materials has demonstrated significant promise for energy harvesting applications.However,the challenge of synthesizing halide perovskite ...The utilization of piezoelectric nanogenerator(PENG)based on halide perovskite materials has demonstrated significant promise for energy harvesting applications.However,the challenge of synthesizing halide perovskite materials with both high output performance and stability using a straightforward process persists as a substantial obstacle.Herein,we present the fabrication of CsPbI_(3)nanorods(NRs)exhibiting highly uniform orientation within polyvinylidene fluoride(PVDF)fibers through a simple texture engineering approach,marking the instance of enhancing PENG performance in this manner.The resultant composite fibers showcase a short-circuit current density(I_(sc))of 0.78μAcm^(-2)and an open-circuit voltage(V_(oc))of 81V,representing a 2.5 fold increase compared to the previously reported highest value achieved without the electric poling process.This outstanding output performance is ascribed to the orientation of CsPbI_(3)NRs facilitated by texture engineering and dipole poling via the self-polarization effect.Additionally,the PENG exhibits exceptional thermal and water stability,rendering it suitable for deployment in diverse and challenging environmental conditions.Our findings underscore the significant potential of textured CsPbI_(3)NRs composite fibers for powering low-power consumer electronics,including commercial LEDs and electronic watches.展开更多
基金This work was supported by the National Science Fund for Distinguished Young Scholars(No.52025041)the National Natural Science Foundation of China(Nos.51974021,51902020,52250091)+2 种基金the Fundamental Research Funds for the Central Universities(NO.FRF-TP-20-02C2)the open foundation of Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials,Guangxi University(No.2021GXYSOF12)the Interdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities,FRF-IDRY-21-028).
文摘The utilization of piezoelectric nanogenerator(PENG)based on halide perovskite materials has demonstrated significant promise for energy harvesting applications.However,the challenge of synthesizing halide perovskite materials with both high output performance and stability using a straightforward process persists as a substantial obstacle.Herein,we present the fabrication of CsPbI_(3)nanorods(NRs)exhibiting highly uniform orientation within polyvinylidene fluoride(PVDF)fibers through a simple texture engineering approach,marking the instance of enhancing PENG performance in this manner.The resultant composite fibers showcase a short-circuit current density(I_(sc))of 0.78μAcm^(-2)and an open-circuit voltage(V_(oc))of 81V,representing a 2.5 fold increase compared to the previously reported highest value achieved without the electric poling process.This outstanding output performance is ascribed to the orientation of CsPbI_(3)NRs facilitated by texture engineering and dipole poling via the self-polarization effect.Additionally,the PENG exhibits exceptional thermal and water stability,rendering it suitable for deployment in diverse and challenging environmental conditions.Our findings underscore the significant potential of textured CsPbI_(3)NRs composite fibers for powering low-power consumer electronics,including commercial LEDs and electronic watches.
