Charge transport and electrochemical properties of colloidal greigite (Fe3S4) nanoplatelets

Andrea Paolella; Chandramohan George; Mauro Povia; Yang Zhang; Roman Krahne; Marti Gich; Alessandro Genovese; Andrea Falqui; Maria Longobardi; Pablo Guardia; Teresa Pellegrino; Liberato Manna

doi:10.1021/cm201531h

Charge transport and electrochemical properties of colloidal greigite (Fe₃S₄) nanoplatelets

Andrea Paolella, Chandramohan George, Mauro Povia, Yang Zhang, Roman Krahne, Marti Gich, Alessandro Genovese, Andrea Falqui, Maria Longobardi, Pablo Guardia, Teresa Pellegrino, Liberato Manna^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Room-temperature superparamagnetic greigite nanoplatelets were synthesized using 3-methyl catechol as growth moderator and phase-control agent, in the presence of sulfur, thiosulfate, octadecylamine, and Fe²⁺. Dense films of nanoplatelets showed ohmic behavior in the 10-300 K range. In as-deposited films the resistivity increased with decreasing temperature (as for semiconductors), while in hydrazine-treated films it decreased with decreasing temperature, as for metals. The electrochemical properties of as-prepared greigite nanoplatelets upon lithiation/de-lithiation have been followed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrodes containing greigite nanoplatelets were found to be active in the lithiation/delithiation processes.

Original language	English (US)
Pages (from-to)	3762-3768
Number of pages	7
Journal	Chemistry of Materials
Volume	23
Issue number	16
DOIs	https://doi.org/10.1021/cm201531h
State	Published - Aug 23 2011
Externally published	Yes

Keywords

Nanocrystals
batteries
charge transport
greigite
iron sulfides

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

Access to Document

10.1021/cm201531h

Cite this

@article{518b851ded104560bbfbab655aeed47c,

title = "Charge transport and electrochemical properties of colloidal greigite (Fe3S4) nanoplatelets",

abstract = "Room-temperature superparamagnetic greigite nanoplatelets were synthesized using 3-methyl catechol as growth moderator and phase-control agent, in the presence of sulfur, thiosulfate, octadecylamine, and Fe2+. Dense films of nanoplatelets showed ohmic behavior in the 10-300 K range. In as-deposited films the resistivity increased with decreasing temperature (as for semiconductors), while in hydrazine-treated films it decreased with decreasing temperature, as for metals. The electrochemical properties of as-prepared greigite nanoplatelets upon lithiation/de-lithiation have been followed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrodes containing greigite nanoplatelets were found to be active in the lithiation/delithiation processes.",

keywords = "Nanocrystals, batteries, charge transport, greigite, iron sulfides",

author = "Andrea Paolella and Chandramohan George and Mauro Povia and Yang Zhang and Roman Krahne and Marti Gich and Alessandro Genovese and Andrea Falqui and Maria Longobardi and Pablo Guardia and Teresa Pellegrino and Liberato Manna",

year = "2011",

month = aug,

day = "23",

doi = "10.1021/cm201531h",

language = "English (US)",

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journal = "Chemistry of Materials",

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TY - JOUR

T1 - Charge transport and electrochemical properties of colloidal greigite (Fe3S4) nanoplatelets

AU - Paolella, Andrea

AU - George, Chandramohan

AU - Povia, Mauro

AU - Zhang, Yang

AU - Krahne, Roman

AU - Gich, Marti

AU - Genovese, Alessandro

AU - Falqui, Andrea

AU - Longobardi, Maria

AU - Guardia, Pablo

AU - Pellegrino, Teresa

AU - Manna, Liberato

PY - 2011/8/23

Y1 - 2011/8/23

N2 - Room-temperature superparamagnetic greigite nanoplatelets were synthesized using 3-methyl catechol as growth moderator and phase-control agent, in the presence of sulfur, thiosulfate, octadecylamine, and Fe2+. Dense films of nanoplatelets showed ohmic behavior in the 10-300 K range. In as-deposited films the resistivity increased with decreasing temperature (as for semiconductors), while in hydrazine-treated films it decreased with decreasing temperature, as for metals. The electrochemical properties of as-prepared greigite nanoplatelets upon lithiation/de-lithiation have been followed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrodes containing greigite nanoplatelets were found to be active in the lithiation/delithiation processes.

AB - Room-temperature superparamagnetic greigite nanoplatelets were synthesized using 3-methyl catechol as growth moderator and phase-control agent, in the presence of sulfur, thiosulfate, octadecylamine, and Fe2+. Dense films of nanoplatelets showed ohmic behavior in the 10-300 K range. In as-deposited films the resistivity increased with decreasing temperature (as for semiconductors), while in hydrazine-treated films it decreased with decreasing temperature, as for metals. The electrochemical properties of as-prepared greigite nanoplatelets upon lithiation/de-lithiation have been followed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrodes containing greigite nanoplatelets were found to be active in the lithiation/delithiation processes.

KW - Nanocrystals

KW - batteries

KW - charge transport

KW - greigite

KW - iron sulfides

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DO - 10.1021/cm201531h

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