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http://hdl.handle.net/1843/50606
Type: | Artigo de Periódico |
Title: | Microwave assisted ultra-fast method to synthesize carbonate-phosphates, Na3MCO3PO4 (M = Mn, Fe, Co, Ni) - relevant materials applied in sodium-ion batteries |
Authors: | Demétrio Abreu Sena Costa Lorena Almeida Cadête Costa João Otávio de Sousa Mendes Wagner da Nova Mussel José Domingos Ardisson Luciano Andrey Montoro |
Abstract: | Although largely used in mobiles and electric vehicles applications, insertion batteries based on Li-ion technology are high-cost devices. These applications require high-performance energy storage systems with high-energy and high-power densities, which are better attained by Li-ion technology. However, stationary applications such as power plants and uninterruptible power supplies (UPS) mainly require low-cost energy storage devices. In this scenario Na-ion insertion batteries feature as a cheaper option for such applications. Among the several compounds for use as cathode in Na-batteries, a largely studied class of compounds are the sodium-carbonate-phosphates, Na3MCO3PO4 (M = Mn, Fe, Co or Ni), with structure analogue to the mineral sidorenkite. In this work, it was developed a new microwave-assisted hydrothermal method as an ultra-fast way to prepare sodium-carbonate-phosphate compounds. This methodology results in high-quality materials with general formula Na3MCO3PO4 (M = Mn, Fe, Co or Ni) upon only 5 min processing time. Characterization techniques indicate highly ordered materials with sidorenkite-like phase and different morphologies or crystal habits, including plates, rods, and a ‘starfruit’ shape. As a proof-of-application the Mn-based material was evaluated from electrochemical tests for Na+ insertion reactions. The obtained results evidence initial discharge capacity of 107 mA h g-¹ with good reversible capacity (65 mA h g -¹) after several charge/discharge cycles. |
Subject: | Química analítica Físico-química Análise eletroquímica Baterias Minerais metálicos Compostos de sódio Rietveld, Método de Raios X - Difração Microscopia eletrônica de varredura Análise térmica Espectrometria de massa Termogravimetria Mossbauer, Espectroscopia de |
language: | eng |
metadata.dc.publisher.country: | Brasil |
Publisher: | Universidade Federal de Minas Gerais |
Publisher Initials: | UFMG |
metadata.dc.publisher.department: | COLTEC - COLEGIO TECNICO ICX - DEPARTAMENTO DE QUÍMICA |
Rights: | Acesso Aberto |
metadata.dc.identifier.doi: | http://dx.doi.org/10.21577/0103-5053.20190154 |
URI: | http://hdl.handle.net/1843/50606 |
Issue Date: | Jan-2020 |
metadata.dc.url.externa: | https://jbcs.sbq.org.br/default.asp?ed=293 |
Appears in Collections: | Artigo de Periódico |
Files in This Item:
File | Description | Size | Format | |
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Microwave assisted ultra-fast method to synthesize carbonate-phosphates.pdf | 8.59 MB | Adobe PDF | View/Open |
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