Giant reversible barocaloric effects with high thermal cycle stability in epoxybonded（MnCoGe）0.96（CuCoSn）0.04 composite

作     者：Yafei Kuang Kun Tao Bo Yang Peng Tong Yan Zhang Zhigang Sun Kewei Zhang Dunhui Wang Jifan Hu Liang Zuo 

作者机构：College of Materials Science and Engineering Taiyuan University of Science and Technology Shanxi Key Laboratory of Magnetic and Electric Functional Materials and Applications Taiyuan University of Science and Technology Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) School of Materials Science and Engineering Northeastern University School of Electronics and Information Hangzhou Dianzi University 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报(英文版))

年 卷 期：2024年第11期

页      面：2528-2534页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 52301248, 52271166, 52071071, and 52275567) the Foundational Research Project of Shanxi Province, China (Nos. 202203021222201 and 202203021212304) Ph D Research Startup Foundation of Taiyuan University of Science and Technology (No. 20222057) Ph D Research Startup Foundation of Shanxi Province, China (No. 20232051) 

摘      要：Hexagonal MnMX-based （M=Co or Ni,X=Si or Ge） alloys exhibit giant reversible barocaloric ***,giant volume expansion would result in the as-cast MnMX ingots fragmenting into powders,and inevitably bring the deterioration of mechanical properties and *** fragmentation can bring degradation of structural transformation entropy change during cyclic application and removal of *** this paper,giant reversible barocaloric effects with high thermal cycle stability can be achieved in the epoxy bonded （MnCoGe）0.96（CuCoSn）*** reversible isothermal entropy change of 43.0 J·kg-1·K-1and adiabatic temperature change from barocaloric effects (?TBCE) of 15.6 K can be obtained within a wide temperature span of 30 K at 360 MPa,which is mainly attributed to the integration of the change in the transition temperature driven by pressure of-101 K·GPa-1and suitable thermal hysteresis of 11.1 ***,the variation of reversible ?TBCEagainst the applied hydrostatic pressure reaches up to 43 K·GPa-1,which is at the highest level among the other reported giant barocaloric *** importantly,after 60 thermal cycles,the composite does not break and the calorimetric curves coincide well,demonstrating good thermal cycle stability.