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Toward Multifunctional Electronics: Flexible NBT-Based Film with a Large Electrocaloric Effect and High Energy Storage Property.
Yang, Changhong; Han, Yajie; Feng, Chao; Lin, Xiujuan; Huang, Shifeng; Cheng, Xin; Cheng, Zhenxiang.
Afiliação
  • Yang C; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials , University of Jinan , Jinan 250022 , China.
  • Han Y; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials , University of Jinan , Jinan 250022 , China.
  • Feng C; School of Materials Science and Engineering , University of Jinan , Jinan 250022 , China.
  • Lin X; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials , University of Jinan , Jinan 250022 , China.
  • Huang S; School of Materials Science and Engineering , University of Jinan , Jinan 250022 , China.
  • Cheng X; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials , University of Jinan , Jinan 250022 , China.
  • Cheng Z; Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials , University of Jinan , Jinan 250022 , China.
ACS Appl Mater Interfaces ; 12(5): 6082-6089, 2020 Feb 05.
Article em En | MEDLINE | ID: mdl-31939651
Advances in smart and wearable devices are driving innovations in multifunctional flexible materials at a tremendous pace. Here, drawing support from the unique flexible fluorophlogopite mica platform, we present a promising all-inorganic bendable Mn-modified 0.65(0.94Na0.5Bi0.5TiO3-0.06BaTiO3)-0.35SrTiO3 (NBBST) film with dual use in electrocaloric (EC) refrigeration and energy storage via a cost-effective transfer-free process. An appreciable room-temperature EC effect with adiabatic temperature change of 12 K and isothermal entropy of 18 J K-1 kg-1 was realized in the NBBST film, which benefits from the large change in dipolar ordering near depolarization temperature. Also, the film exhibits a broad operating temperature span over 25 °C because of its relaxor feature. Most importantly, the film can maintain a high EC performance either under bending deformation at 5 mm radius or after undergoing 104 bending-unbending cycles. Meanwhile, the flexible NBBST film possesses good energy storage property with a recoverable energy density of 56 J cm-3 and an efficiency of 66%. This is the first example of a lead-free all-inorganic multifunctional film capacitor toward the flexible EC refrigeration and energy storage devices. This work shows bright prospects in the emerging flexible e-market.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Assunto da revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Assunto da revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos