Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Advanced Science

卷:9

Qiuyun Fu¹  Syed Ul Hasnain Bakhtiar¹  Long Chen¹  Yanmin Jia²  Huangfu Geng³  Hongyuan Xiao³  Wen Dong³  Yiping Guo³ 

[1] Functional Ceramics of the Ministry of Education School of Optical and Electronic Information and Engineering Research Centre & Wuhan National Lab for Optoelectronics & Optical Valley Laboratory Huazhong University of Science and Technology Wuhan 430074 China;

[2] School of Science Xi'an University of Posts & Telecommunications Xi'an 710121 China;

[3] State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

关键词: catalysis;    defect engineering;    energy harvesting;    ferroelectric;    microstructure engineering;   

DOI  :  10.1002/advs.202105368

来源: DOAJ

【 摘 要 】

Abstract In the past century, ferroelectrics are well known in electroceramics and microelectronics for their unique ferroelectric, piezoelectric, pyroelectric, and photovoltaic effects. Nowadays, the advances in understanding and tuning of these properties have greatly promoted a broader application potential especially in energy and environmental fields, by harvesting solar, mechanical, and heat energies. For example, high piezoelectricity and high pyroelectricity can be designed by defect or microstructure engineering for piezo‐ and pyro‐catalyst, respectively. Moreover, highly piezoelectric and broadband (UV–Vis–NIR) light‐responsive ferroelectrics can be designed via defect engineering, giving rise to a new concept of photoferroelectrics for efficient photocatalysis, piezocatalysis, pyrocatalysis, and related cocatalysis. This article first summarizes the recent developments in ferroelectrics in terms of piezoelectricity, pyroelectricity, and photovoltaic effects based on defect and microstructure engineering. Then, the potential applications in energy generation (i.e., photovoltaic effect, H2 generation, and self‐powered multisource energy harvesting and signal sensing) and environmental protection (i.e., photo‐piezo‐pyro‐ cocatalytic dye degradation and CO2 reduction) are reviewed. Finally, the outlook and challenges are discussed. This article not only covers an overview of the state‐of‐art advances of ferroelectrics, but also prospects their applications in coping with energy crisis and environmental pollution.

【 授权许可】

Unknown