Issue 11, 2023
From the journal:

Materials Horizons

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials†

Yoichi Murakami, ORCID logo *abcd   Shoma Mitsui,b   Shiori Nakagawa,e   Xiaohan Wang, ORCID logo b   Hiroki Fujisawa,e   Meguya Ryuefg  and  Junko Morikawa ORCID logo *eg  

* Corresponding authors

a Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: murakami.y.af@m.titech.ac.jp

b Department of Mechanical Engineering, School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan

c Department of Transdisciplinary Science and Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan

d PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

e Department of Organic and Polymeric Materials, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: morikawa.j.aa@m.titech.ac.jp

f National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, Japan

g CRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

Abstract

We impregnated the sugar alcohols (SAs) erythritol and mannitol (Man) in >0.1 mm single crystals of a covalent organic framework, COF-300, to propose new solid-state heat storing materials. The fusion-freezing cycles of the Man–COF composite occur in a narrow range of 130–155 °C without large or random supercooling, which has been a crucial problem of SAs, indicating the significance of this materials concept. The Man–COF composite displayed two endothermic and two exothermic features in the heating/cooling cycles. We measured the heat transmission properties in detail, based on which we discuss and suggest a postulate on the phase change behaviour of Man in the pores of the COF.

Graphical abstract: Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

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Article information

DOI
https://doi.org/10.1039/D3MH00905J
Article type
Communication
Submitted
13 jun 2023
Accepted
14 aug 2023
First published
14 aug 2023

Mater. Horiz., 2023,10, 4922-4929

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Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Y. Murakami, S. Mitsui, S. Nakagawa, X. Wang, H. Fujisawa, M. Ryu and J. Morikawa, Mater. Horiz., 2023, 10, 4922 DOI: 10.1039/D3MH00905J

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