@article{35710,
  author = {Jian Zeng and Xintong Zhang and Ka Man Chung and Tianshi Feng and Haowen Zhang and Ravi S Prasher and Renkun Chen},
  title = {Moisture thermal battery with autonomous water harvesting for passive electronics cooling},
  abstract = {<p>Passive cooling ofhigh-powerelectronicswithminimumenergyand water input is critical for the global water-energy nexus but has been challenging because of the large fluctuation in power and heat loads between the on/off-peak hours. Here we develop a moisture thermal battery (MTB) by coating superabsorbent hydrogel onto a pin fin heat sink with a large surface. The MTB leverages large latent heat and high thermal conductance of water evaporation for electronics cooling during on-peak hours and, importantly, autonomously harvests atmospheric moisture and stores the water during off hours. The MTB provides a thermal capacity of up to 200 kWhm<sup>-2</sup>forevaporative cooling with a record-high effective heat transfer coefficient of up to 1,000 W m<sup>-2</sup> K<sup>-1</sup> for a passive device (no external power). The MTB suppresses the temperature f luctuation of a high-power field effect transistor and a computer CPU between the on- and off-peak hours by 15 K.</p>},
  year = {2023},
  journal = {Cell Reports Physical Science},
  volume = {4},
  pages = {101250},
  month = {02/2023},
  issn = {26663864},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S266638642300005X},
  doi = {10.1016/j.xcrp.2023.101250},
  language = {eng},
}