Fabrication of doped SmBaCo2O5+δ double perovskites for enhanced solar-driven interfacial evaporation. Issue 18 (15th December 2019)

• Record Type: Journal Article
• Authors: Lu, Yi; Dai, Tianyi; Lu, Chunhua; Cao, Cancan; Zhang, Weijie; Xu, Weifeng; Min, Huihua; Yang, Xiaofei
• Is Part Of: Ceramics international. Volume 45:Issue 18(2019)Part A
• Page Start: 24903
• Page End: 24908
• Publication Date: 2019-12-15
• Subjects: Double perovskite -- Solar evaporation -- Sol-gel -- Energy conversion; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.08.131
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: As a promising solar-thermal energy conversion system, solar-driven vapor generation has been considered as a potential strategy to mitigate freshwater shortage and water contamination. Although remarkable advances have been achieved in this emerging field, the majority of solar evaporators that have been explored suffer from high cost, tedious synthetic protocols, and low robustness. Herein we demonstrate a facile two-step strategy for the synthesis of doped SmBaCo2 O5+δ double perovskites by combining a sol-gel approach with high-temperature annealing. It is noteworthy that as-prepared double perovskites exhibit an outstanding broadband solar absorption of 93% as well as a relatively low thermal radiation loss compared to conventional carbon-based sunlight absorbers. The constructed double perovskite-based interfacial solar steam device reveals an impressive evaporation efficiency of 86% at a power density of 2 W/cm 2 . Therefore, the explored solar evaporation system based on double perovskites Sm0.7 Sr0.3 BaCo2 O5+δ offers a complementary approach for large-scale fabrication, high-reliability, and superior performance solar-to-thermal energy conversion systems.