Ionic thermoelectric materials and devices  

作　　者：Dan Zhao Alois Würger Xavier Crispin 

机构地区：[1]Laboratory of Organic Electronics,Linkoping University,Norrkoping 60247,Sweden [2]Univ.Bordeaux&CNRS,LOMA(UMR 5798),F-33405 Talence,France [3]Wallenberg Wood Science Center,ITN,Linköping University,Norrköping,Sweden

出　　处：《Journal of Energy Chemistry》2021年第10期88-103,I0003,共17页能源化学（英文版）

基　　金：support by the French National Research Agency through grant ANR-19-CE300012;by the European Research Council(ERC)through grant No.772725。

摘　　要：The tremendous amount of wasted heat from solar radiation and industry dissipation has motivated the development of thermoelectric concepts that directly convert heat into electricity.The main challenge in practical applications for thermoelectrics is the high cost from both materials and manufacturing.Recently,breakthrough progresses in ionic thermoelectrics open up new possibilities to charge energy storage devices when submitted to a temperature gradient.The charging voltage is internally from the ionic Seebeck effect of the electrolyte between two electrodes.Hence electrolytes with high thermoelectric figure of merit are classified as ionic thermoelectric materials.Most ionic thermoelectric materials are composed of abundant elements,and they can generate hundreds of times larger thermal voltage than that of electronic materials.This emerging thermoelectric category brings new hope to fabricate low cost and large area heat-to-energy conversion devices,and triggers a renewed interest for ionic thermodiffusion.In this review,we summarize the state of the art in the new field of ionic thermoelectrics,from the driving force of the ionic thermodiffusion to material and application developments.We present a general map of ionic thermoelectric materials,discuss the unique characters of each type of the reported electrolytes,and propose potential optimization and future topics of ionic thermoelectrics.

关 键 词：Electrolytes Soret effect THERMODIFFUSION Thermal energy conversion 

分 类 号：TB34[一般工业技术—材料科学与工程]