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Title: Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures

Abstract

The growth and proliferation of lithium (Li) dendrites during cell recharge is unavoidable, which seriously hinders the development and application of rechargeable Li metal batteries. Solid electrolytes with robust mechanical modulus are regarded as a promising approach to overcome the dendrite problems. However, their room-temperature ionic conductivities are usually too low to reach the level required for normal battery operation. Here, a class of novel solid electrolytes with liquid-like room-temperature ionic conductivities (> 1 mS cm-1) has been successfully synthesized by taking advantage of the unique nanoarchitectures of hollow silica (HS) spheres to confine liquid electrolytes in hollow space to afford high conductivities. In a symmetric lithium/lithium cell, such kind of solid-like electrolytes demonstrates a robust performance against Li dendrite problems, well stabilizing the cell system from short circuiting in a long-time operation at current densities ranging from 0.16 to 0.32 mA cm-2. Moreover, the high flexibility and compatibility of HS nanoarchitectures, in principle, enables broad tunability to choose desired liquids for the fabrication of other kinds of solid-like electrolytes, such as those containing Na+, Mg2+ or Al3+ as conductive media, providing a useful alternative strategy for the development of next generation rechargeable batteries.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1]
  1. ORNL
  2. University of Texas at Austin
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1185980
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Letters; Journal Volume: 15; Journal Issue: 5
Country of Publication:
United States
Language:
English
Subject:
Li dendrite; solid-like electrolyte; superior conductivity; hollow nanoarchitecture; nanoconfinement.

Citation Formats

Zhang, Jinshui, Bai, Ying, Sun, Xiao-Guang, Li, Yunchao, Guo, Bingkun, Chen, Jihua, Veith, Gabriel M, Hensley, Dale K, Paranthaman, Mariappan Parans, Goodenough, John B, and Dai, Sheng. Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures. United States: N. p., 2015. Web. doi:10.1021/acs.nanolett.5b00739.
Zhang, Jinshui, Bai, Ying, Sun, Xiao-Guang, Li, Yunchao, Guo, Bingkun, Chen, Jihua, Veith, Gabriel M, Hensley, Dale K, Paranthaman, Mariappan Parans, Goodenough, John B, & Dai, Sheng. Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures. United States. doi:10.1021/acs.nanolett.5b00739.
Zhang, Jinshui, Bai, Ying, Sun, Xiao-Guang, Li, Yunchao, Guo, Bingkun, Chen, Jihua, Veith, Gabriel M, Hensley, Dale K, Paranthaman, Mariappan Parans, Goodenough, John B, and Dai, Sheng. Thu . "Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures". United States. doi:10.1021/acs.nanolett.5b00739.
@article{osti_1185980,
title = {Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures},
author = {Zhang, Jinshui and Bai, Ying and Sun, Xiao-Guang and Li, Yunchao and Guo, Bingkun and Chen, Jihua and Veith, Gabriel M and Hensley, Dale K and Paranthaman, Mariappan Parans and Goodenough, John B and Dai, Sheng},
abstractNote = {The growth and proliferation of lithium (Li) dendrites during cell recharge is unavoidable, which seriously hinders the development and application of rechargeable Li metal batteries. Solid electrolytes with robust mechanical modulus are regarded as a promising approach to overcome the dendrite problems. However, their room-temperature ionic conductivities are usually too low to reach the level required for normal battery operation. Here, a class of novel solid electrolytes with liquid-like room-temperature ionic conductivities (> 1 mS cm-1) has been successfully synthesized by taking advantage of the unique nanoarchitectures of hollow silica (HS) spheres to confine liquid electrolytes in hollow space to afford high conductivities. In a symmetric lithium/lithium cell, such kind of solid-like electrolytes demonstrates a robust performance against Li dendrite problems, well stabilizing the cell system from short circuiting in a long-time operation at current densities ranging from 0.16 to 0.32 mA cm-2. Moreover, the high flexibility and compatibility of HS nanoarchitectures, in principle, enables broad tunability to choose desired liquids for the fabrication of other kinds of solid-like electrolytes, such as those containing Na+, Mg2+ or Al3+ as conductive media, providing a useful alternative strategy for the development of next generation rechargeable batteries.},
doi = {10.1021/acs.nanolett.5b00739},
journal = {Nano Letters},
number = 5,
volume = 15,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}