通过在沸石-聚合物复合材料中注入液态水克服热能储存密度限制

IF 17.5 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2024-10-02 DOI:10.1016/j.matt.2024.06.038

Sourav Chakravarty , Wenting Hinz , Dion Antao , Patrick J. Shamberger

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引用次数: 0

摘要

用于热能储存（TES）的水吸附剂对因其吸附热量高以及在接近室温时吸附/解吸过程稳定而大有可为。然而，由于吸附剂的水吸附能力和缓慢的充电速度，它们的整体储能能力受到了限制。为解决这一问题，我们提出了一种液态水充电策略，用于复合 TES 材料，该材料具有高吸附容量的沸石颗粒（硅铝磷酸盐-34 [SAPO-34]），并与亲水性聚合物结合。这项创新通过液态水保留和聚合物水合作用，实现了超过 1.6 kJ g-1 的 TES 密度。这种复合材料在高达 150°C 的温度下，经过 100 多个充电/放电循环后仍能保持稳定。充电后，液态水会自发分离成三个种群，每个种群都与不同的蓄热温度有关。这种方法克服了基于吸附的 TES 的传统局限性，为快速充电的开放式系统热能存储铺平了道路。

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Overcoming thermal energy storage density limits by liquid water recharge in zeolite-polymer composites

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Overcoming thermal energy storage density limits by liquid water recharge in zeolite-polymer composites

Water-adsorbent pairs for thermal energy storage (TES) show promise due to their high heat of adsorption and stable adsorption/desorption process at near-room temperature. However, their overall energy storage capacity is limited by the adsorbent’s water adsorption capacity and slow recharge rate. To address this, we propose a liquid water recharge strategy for composite TES materials featuring high-adsorption-capacity zeolite particles (silicoaluminophosphate-34 [SAPO-34]) bound by a hydrophilic polymer. This innovation achieves TES densities exceeding 1.6 kJ g⁻¹, facilitated by liquid water retention and polymer hydration. The composites exhibit stability through more than 100 recharge/discharge cycles up to 150°C. Post-recharge, liquid water spontaneously segregates into three populations, each linked to a distinct heat storage temperature. This approach overcomes traditional limitations in adsorption-based TES, paving the way for rapidly recharged open-system thermal energy storage.

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.