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<p>Photovoltaic-powered batteries offer a promising integrated solution for sustainable energy in portable electronics, yet conventional designs face challenges in integration, miniaturization, and flexibility. We address this through a dual-functional, material-sharing strategy using ethyl viologen diiodide to achieve synergistic performance enhancement in photovoltaic-powered batteries. The ethyl viologen diiodide-modified perovskite solar cells exhibit 26.11% efficiency and retain 96.2% of their original performance after 1000 h of continuous use. Batteries employing ethyl viologen diiodide-derived perovskitoid cathodes show 296.1 mAh g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, with a capacity retention of 89% after 10,000 cycles at 5 A g<sup>−1</sup>. The resulting all-perovskite-based integrated devices show an overall energy conversion efficiency of 18.54%, with flexible versions achieving 17.62% efficiency and stable photo-charging/discharging cyclability over 100 cycles. These flexible devices reliably power a wearable glucose monitor in intelligent control mode for 24 h, demonstrating their potential for next-generation portable electronics applications.</p>

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Highly efficient all-perovskite photovoltaic-powered battery with dual-function viologen for portable electronics

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月27日

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  • Jie Gong,
  • Danpeng Gao,
  • Hang Zhang,
  • Xiongyi Liang,
  • Bo Li,
  • Qi Liu,
  • Liangchen Qian,
  • Xintong Li,
  • Xin Wu,
  • Chunlei Zhang,
  • Zexin Yu,
  • Francesco Vanin,
  • Xiao Cheng Zeng,
  • Nan Li,
  • Jijian Xu,
  • Chunyi Zhi,
  • Zonglong Zhu

摘要

Photovoltaic-powered batteries offer a promising integrated solution for sustainable energy in portable electronics, yet conventional designs face challenges in integration, miniaturization, and flexibility. We address this through a dual-functional, material-sharing strategy using ethyl viologen diiodide to achieve synergistic performance enhancement in photovoltaic-powered batteries. The ethyl viologen diiodide-modified perovskite solar cells exhibit 26.11% efficiency and retain 96.2% of their original performance after 1000 h of continuous use. Batteries employing ethyl viologen diiodide-derived perovskitoid cathodes show 296.1 mAh g−1 at 0.5 A g−1, with a capacity retention of 89% after 10,000 cycles at 5 A g−1. The resulting all-perovskite-based integrated devices show an overall energy conversion efficiency of 18.54%, with flexible versions achieving 17.62% efficiency and stable photo-charging/discharging cyclability over 100 cycles. These flexible devices reliably power a wearable glucose monitor in intelligent control mode for 24 h, demonstrating their potential for next-generation portable electronics applications.