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

Yoichi Murakami; Shoma Mitsui; Shiori Nakagawa; Xiaohan Wang; Hiroki Fujisawa; Meguya Ryu; Junko Morikawa

doi:10.1039/d3mh00905j

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

Mater Horiz. 2023 Oct 30;10(11):4922-4929. doi: 10.1039/d3mh00905j.

Authors

Yoichi Murakami^{1

2

3

4}, Shoma Mitsui², Shiori Nakagawa⁵, Xiaohan Wang², Hiroki Fujisawa⁵, Meguya Ryu^{5

6

7}, Junko Morikawa^{5

7}

Affiliations

¹ Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan. murakami.y.af@m.titech.ac.jp.
² Department of Mechanical Engineering, School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
³ 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.
⁴ PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
⁵ 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. morikawa.j.aa@m.titech.ac.jp.
⁶ National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
⁷ CRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.

PMID: 37606516
DOI: 10.1039/d3mh00905j

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.