Study on cooling characteristics of solar cells using LiCl-based encapsulated hygroscopic medium

CHANG Yuan; LIU Jiani; LI Haoran; HONG Wenpeng; LI Yan

doi:10.11949/0438-1157.20260311

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Study on cooling characteristics of solar cells using LiCl-based encapsulated hygroscopic medium

更新时间：2026-04-30

- Study on cooling characteristics of solar cells using LiCl-based encapsulated hygroscopic medium
- CIESC Journal (2026)
- 作者机构：
  
  东北电力大学能源与动力工程学院，吉林吉林 132012
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260311
  CLC： TK 123
- Received：12 March 2026，
  
  Revised：2026-04-27，
  
  Accepted：28 April 2026，
- 稿件说明：
移动端阅览
CHANG Yuan, LIU Jiani, LI Haoran, et al. Study on cooling characteristics of solar cells using LiCl-based encapsulated hygroscopic medium[J/OL]. CIESC Journal, 2026.
DOI：

CHANG Yuan, LIU Jiani, LI Haoran, et al. Study on cooling characteristics of solar cells using LiCl-based encapsulated hygroscopic medium[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260311.

摘要

吸湿介质中的水蒸发过程可降低太阳能电池运行温度，然而盐泄漏导致吸附量下降，进而减小冷却温度且缩短冷却时间。本文将负载吸湿介质LiCl的碳毡封装在超疏水聚四氟乙烯膜中，避免了LiCl的泄漏。在一倍标准光照强度下将太阳能电池的表面温度降低10.7 ℃、背板温度降低11.8 ℃，功率提升10.4 mW，光电转换效率提高7.8%。此外，其在多云和晴天的户外条件下分别实现了5.2 ℃和7.1 ℃的平均温降。

Abstract

The evaporation of water in hygroscopic media can lower the operating temperature of solar cells. However

salt leakage results in a decrease in adsorption capacity

which in turn reduces the cooling temperature and shortens the cooling duration. In this study

LiCl-loaded carbon felt was encapsulated in a superhydrophobic polytetrafluoroethylene membrane. This configuration prevents the leakage of the hygroscopic medium. Under one-sun illumination

it reduces the surface temperature of the solar cell by 10.7 ℃ and the backsheet temperature by 11.8 °C. This increases the power output by 10.4 mW and improves the photoelectric conversion efficiency by 7.8%. Additionally

under outdoor conditions of cloudy and sunny days

it achieves an average temperature reduction of 5.2 and 7.1 ℃

respectively.

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