TY - JOUR
T1 - Force-driven reversible liquid–gas phase transition mediated by elastic nanosponges
AU - Nomura, Keita
AU - Nishihara, Hirotomo
AU - Yamamoto, Masanori
AU - Gabe, Atsushi
AU - Ito, Masashi
AU - Uchimura, Masanobu
AU - Nishina, Yuta
AU - Tanaka, Hideki
AU - Miyahara, Minoru T.
AU - Kyotani, Takashi
N1 - Funding Information:
The authors are thankful to Ms M. Ohwada and M. Ozawa for their experimental support. This work was supported by JST PRESTO Grant no. JPMJPR1317; JST PREST network; JST CREST Grant no. JPMJCR1324 and JPMJCR18R3; JSPS KAKENHI Grant Number 16J06543, 17H01042 and 17H03097; the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials; and the Network Joint Research Centre for Materials and Devices.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Nano-confined spaces in nanoporous materials enable anomalous physicochemical phenomena. While most nanoporous materials including metal-organic frameworks are mechanically hard, graphene-based nanoporous materials possess significant elasticity and behave as nanosponges that enable the force-driven liquid–gas phase transition of guest molecules. In this work, we demonstrate force-driven liquid–gas phase transition mediated by nanosponges, which may be suitable in high-efficiency heat management. Compression and free-expansion of the nanosponge afford cooling upon evaporation and heating upon condensation, respectively, which are opposite to the force-driven solid–solid phase transition in shape-memory metals. The present mechanism can be applied to green refrigerants such as H2O and alcohols, and the available latent heat is at least as high as 192 kJ kg−1. Cooling systems using such nanosponges can potentially achieve high coefficients of performance by decreasing the Young’s modulus of the nanosponge.
AB - Nano-confined spaces in nanoporous materials enable anomalous physicochemical phenomena. While most nanoporous materials including metal-organic frameworks are mechanically hard, graphene-based nanoporous materials possess significant elasticity and behave as nanosponges that enable the force-driven liquid–gas phase transition of guest molecules. In this work, we demonstrate force-driven liquid–gas phase transition mediated by nanosponges, which may be suitable in high-efficiency heat management. Compression and free-expansion of the nanosponge afford cooling upon evaporation and heating upon condensation, respectively, which are opposite to the force-driven solid–solid phase transition in shape-memory metals. The present mechanism can be applied to green refrigerants such as H2O and alcohols, and the available latent heat is at least as high as 192 kJ kg−1. Cooling systems using such nanosponges can potentially achieve high coefficients of performance by decreasing the Young’s modulus of the nanosponge.
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U2 - 10.1038/s41467-019-10511-7
DO - 10.1038/s41467-019-10511-7
M3 - Article
C2 - 31209212
AN - SCOPUS:85067447256
SN - 2041-1723
VL - 10
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2559
ER -