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Title: One-step nonlinear electrochemical synthesis of Te x S y @PANI nanorod materials for Li-Te x S y battery

Abstract

As a promising cathode material for rechargeable lithium ion batteries, tellurium has attracted a great deal of attention due to its high conductivity and high theoretical capacity. Yet, the large volume expansion (~104 vol%) during Li-Te alloying process prevents the application of Li-Te battery. Here, by using a novel one-step nonlinear electrochemical approach, we prepared a TexSy@polyaniline nanorod composites, in which elemental sulfur is successfully embedded into tellurium matrix to effectively tackle the volumetric variation problem. In situ transmission electron microscopy (TEM) of the Li-Te (de)alloying process on single TexSy@polyaniline particle demonstrated that the volumetric variation was efficiently suppressed in comparison to the situation of pristine Te particles. Moreover, polyaniline binder effectively trapped Te and sulfur species in its network and guaranteed stable electric contact and fast transport of Li ions, which resulted in significant improvement of the battery performance. Interestingly, the as-obtained composites display a high initial capacity of 1141 mA h g-1 with typical Li-S battery characteristics at a low current density of 0.1 A g-1 , while it shows a good cycling stability at high current density of 5 A g-1 with Li-Te battery features.

Authors:
; ORCiD logo; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology
OSTI Identifier:
1467641
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Energy Storage Materials; Journal Volume: 16; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
Li-TexSy battery; controllable synthesis; in situ TEM; nonlinear electrochemistry; tellurium sulfide composites

Citation Formats

Li, Jun, Yuan, Yifei, Jin, Huile, Lu, Huihang, Liu, Aili, Yin, Dewu, Wang, Jichang, Lu, Jun, and Wang, Shun. One-step nonlinear electrochemical synthesis of Te x S y @PANI nanorod materials for Li-Te x S y battery. United States: N. p., 2019. Web. doi:10.1016/j.ensm.2018.04.019.
Li, Jun, Yuan, Yifei, Jin, Huile, Lu, Huihang, Liu, Aili, Yin, Dewu, Wang, Jichang, Lu, Jun, & Wang, Shun. One-step nonlinear electrochemical synthesis of Te x S y @PANI nanorod materials for Li-Te x S y battery. United States. doi:10.1016/j.ensm.2018.04.019.
Li, Jun, Yuan, Yifei, Jin, Huile, Lu, Huihang, Liu, Aili, Yin, Dewu, Wang, Jichang, Lu, Jun, and Wang, Shun. Tue . "One-step nonlinear electrochemical synthesis of Te x S y @PANI nanorod materials for Li-Te x S y battery". United States. doi:10.1016/j.ensm.2018.04.019.
@article{osti_1467641,
title = {One-step nonlinear electrochemical synthesis of Te x S y @PANI nanorod materials for Li-Te x S y battery},
author = {Li, Jun and Yuan, Yifei and Jin, Huile and Lu, Huihang and Liu, Aili and Yin, Dewu and Wang, Jichang and Lu, Jun and Wang, Shun},
abstractNote = {As a promising cathode material for rechargeable lithium ion batteries, tellurium has attracted a great deal of attention due to its high conductivity and high theoretical capacity. Yet, the large volume expansion (~104 vol%) during Li-Te alloying process prevents the application of Li-Te battery. Here, by using a novel one-step nonlinear electrochemical approach, we prepared a TexSy@polyaniline nanorod composites, in which elemental sulfur is successfully embedded into tellurium matrix to effectively tackle the volumetric variation problem. In situ transmission electron microscopy (TEM) of the Li-Te (de)alloying process on single TexSy@polyaniline particle demonstrated that the volumetric variation was efficiently suppressed in comparison to the situation of pristine Te particles. Moreover, polyaniline binder effectively trapped Te and sulfur species in its network and guaranteed stable electric contact and fast transport of Li ions, which resulted in significant improvement of the battery performance. Interestingly, the as-obtained composites display a high initial capacity of 1141 mA h g-1 with typical Li-S battery characteristics at a low current density of 0.1 A g-1 , while it shows a good cycling stability at high current density of 5 A g-1 with Li-Te battery features.},
doi = {10.1016/j.ensm.2018.04.019},
journal = {Energy Storage Materials},
number = C,
volume = 16,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2019},
month = {Tue Jan 01 00:00:00 EST 2019}
}