Moisture-based green energy harvesting over 600 hours via photocatalysis-enhanced hydrovoltaic effect

Harvesting the energy from the interaction between hygroscopic materials and atmospheric water can generate green and clean energy. However, the ion diffusion process of moisture-induced dissociation leads to the disappearance of the ion concentration gradient gradually, and there is still a lack of moisture-based power generation devices with truly continuous operation, especially the duration of the current output still needs to be extended. Here, we propose a design for reconstructing the ion concentration gradient by coupling photocatalytic hydrogen evolution reaction with hydrovoltaic effect, to report a moisture-enabled electric generator (MEG) with continuous current output. We show that the…

• SJ
  Southwest Jiaotong University

  Awards: 2682023QZ004, 2682023KJ012, 2682023ZTPY001, 2682022KJ017
• NS
  Natural Science Foundation of Sichuan Province

  Awards: 2023NSFSC0981, 2023NSFSC1988
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 2682023ZTPY001, 2682023KJ012, 2682022KJ017, 2682023QZ004, SWJTU 2682024CG012