Phase‐Changing Microcapsules Incorporated with Black Phosphorus for Efficient Solar Energy Storage,Advanced Science

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Phase‐Changing Microcapsules Incorporated with Black Phosphorus for Efficient Solar Energy Storage
Advanced Science ( IF 14.3 ) Pub Date : 2020-10-22 , DOI: 10.1002/advs.202000602
Hao Huang _{1,

2} , Tongyu Shi _{1,

2} , Rui He ₁ , Jiahong Wang _{1,

2,

3} , Paul K Chu ₃ , Xue-Feng Yu _{1,

2}

Affiliation

A new solar energy storage system is designed and synthesized based on phase‐changing microcapsules incorporated with black phosphorus sheets (BPs). BPs are 2D materials with broad light absorption and high photothermal performance, which are synthesized and covalently modified with poly(methyl methacrylate) (PMMA) to produce the PMMA‐modified BPs (mBPs). With the aid of PMMA, the mBPs and phase‐changing materials (PCM, eicosane) are encapsulated together to form microcapsules. The microencapsulated eicosane and mBPs (mBPs‐MPCM) composites exhibit a high latent heat of over 180 kJ kg⁻¹, good thermal reliability, as well as excellent photothermal characteristics inherited from BPs. Owing to the direct contact in the integrated mBPs‐MPCM composites, the thermal energy generated by mBPs is transferred to eicosane immediately giving rise to three times higher efficiency in solar energy storage compared to microcapsules with mBPs on the surface. The mBPs‐MPCM composites have great potential in solar energy storage applications and the concept of integrating photothermal materials and PCMs as the core provides insights into the design of high‐efficiency solar energy storage materials.

中文翻译：

掺有黑磷的相变微胶囊用于高效太阳能存储

基于与黑磷片（BP）结合的相变微胶囊，设计并合成了一种新型太阳能存储系统。 BPs是具有宽光吸收和高光热性能的二维材料，由聚甲基丙烯酸甲酯（PMMA）合成并共价改性以产生PMMA改性BPs（mBPs）。在 PMMA 的帮助下，mBP 和相变材料（PCM、二十烷）被封装在一起形成微胶囊。微胶囊化二十烷和mBPs (mBPs-MPCM)复合材料表现出超过180 kJ kg ^-1的高潜热、良好的热可靠性以及继承自BPs的优异光热特性。由于集成的 mBPs-MPCM 复合材料中的直接接触，mBPs 产生的热能立即转移到二十烷中，与表面具有 mBPs 的微胶囊相比，太阳能存储效率提高了三倍。 mBPs-MPCM复合材料在太阳能存储应用中具有巨大潜力，以光热材料和相变材料为核心的集成概念为高效太阳能存储材料的设计提供了见解。

更新日期：2020-12-03

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