resumo
BaTiO3 particles with 2% Al dopant concentration were reported by Dudem et al. in J. Mater. Chem. A, 2018, 6, 16101 to exhibit a high remnant polarisation and piezoelectric coefficient, being hence employed to efficiently enhance the output performance of hybrid piezo/triboelectric nanogenerators. However, in this comment we express concerns regarding the discussion of the piezoelectric coefficient and the interpretation or reliability of the ferroelectric results in that publication. We also discuss an inconsistency between the Al doping content and the presented results, and contend that other material data analyses were contradictory or incorrect and that many important details were missing.
categoria
Chemistry; Energy & Fuels; Materials Science
autores
Tkach, A; Okhay, O
nossos autores
Oleksandr Tkach
Investigador Auxiliar
Olena Okhay
Bolseiro de pós-DoutoramentoProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
Collaboratory for Emerging Technologies, CoLab (EMERGING TECHNOLOGIES)
agradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MEC (PIDDAC) as well as within FCT independent researcher grant 2021.02284.CEECIND and supported by national funds, through FCT in the scope of the framework contract foreseen in numbers 4, 5, and 6 of article 23 of the Decree Law 57/2016, of 29 August, UIDB/00481/2020 and UIDP/00481/2020; and CENTRO-01-0145-FEDER-022083 - Centro Portugal Regional Operational Programme (Centro2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund.