A quaternary sodium superionic conductor - Na10.8Sn1.9PS11.8

Zhaoxin Yu; Shun Li Shang; Yue Gao; Daiwei Wang; Xiaolin Li; Zi Kui Liu; Donghai Wang

doi:10.1016/j.nanoen.2018.01.046

A quaternary sodium superionic conductor - Na_10.8Sn_1.9PS_11.8

Zhaoxin Yu, Shun Li Shang, Yue Gao, Daiwei Wang, Xiaolin Li, Zi Kui Liu, Donghai Wang

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

60 Scopus citations

Abstract

Sulfide-based Na-ion conductors are promising candidates as solid-state electrolytes (SSEs) for fabrication of solid-state Na-ion batteries (NIBs) because of their high ionic conductivities and low grain boundary resistance. Currently, most of the sulfide-based Na-ion conductors with high conductivities are focused on Na₃PS₄ phases and its derivatives. It is desirable to develop Na-ion conductors with new composition and crystal structure to achieve superior ionic conductivities. Here we report a new quaternary Na-ion conductor, Na_10.8Sn_1.9PS_11.8, exhibiting a high ionic conductivity of 0.67 mS cm⁻¹ at 25 °C. This high ionic conductivity originates from the presence of a large number of intrinsic Na-vacancies and three-dimensional Na-ion conduction pathways, which has been confirmed by single-crystal X-ray diffraction and first-principles calculations. The Na_10.8Sn_1.9PS_11.8 phase is further evaluated as an electrolyte in a Na-Sn alloy/TiS₂ battery, demonstrating its potential application in all-solid-state NIBs.

Original language	English (US)
Pages (from-to)	325-330
Number of pages	6
Journal	Nano Energy
Volume	47
DOIs	https://doi.org/10.1016/j.nanoen.2018.01.046
State	Published - May 2018

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.nanoen.2018.01.046

Cite this

@article{b01a19ff58494bc2acd6aec959b0d417,

title = "A quaternary sodium superionic conductor - Na10.8Sn1.9PS11.8",

abstract = "Sulfide-based Na-ion conductors are promising candidates as solid-state electrolytes (SSEs) for fabrication of solid-state Na-ion batteries (NIBs) because of their high ionic conductivities and low grain boundary resistance. Currently, most of the sulfide-based Na-ion conductors with high conductivities are focused on Na3PS4 phases and its derivatives. It is desirable to develop Na-ion conductors with new composition and crystal structure to achieve superior ionic conductivities. Here we report a new quaternary Na-ion conductor, Na10.8Sn1.9PS11.8, exhibiting a high ionic conductivity of 0.67 mS cm−1 at 25 °C. This high ionic conductivity originates from the presence of a large number of intrinsic Na-vacancies and three-dimensional Na-ion conduction pathways, which has been confirmed by single-crystal X-ray diffraction and first-principles calculations. The Na10.8Sn1.9PS11.8 phase is further evaluated as an electrolyte in a Na-Sn alloy/TiS2 battery, demonstrating its potential application in all-solid-state NIBs.",

author = "Zhaoxin Yu and Shang, {Shun Li} and Yue Gao and Daiwei Wang and Xiaolin Li and Liu, {Zi Kui} and Donghai Wang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = may,

doi = "10.1016/j.nanoen.2018.01.046",

language = "English (US)",

volume = "47",

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T1 - A quaternary sodium superionic conductor - Na10.8Sn1.9PS11.8

AU - Yu, Zhaoxin

AU - Shang, Shun Li

AU - Gao, Yue

AU - Wang, Daiwei

AU - Li, Xiaolin

AU - Liu, Zi Kui

AU - Wang, Donghai

PY - 2018/5

Y1 - 2018/5

N2 - Sulfide-based Na-ion conductors are promising candidates as solid-state electrolytes (SSEs) for fabrication of solid-state Na-ion batteries (NIBs) because of their high ionic conductivities and low grain boundary resistance. Currently, most of the sulfide-based Na-ion conductors with high conductivities are focused on Na3PS4 phases and its derivatives. It is desirable to develop Na-ion conductors with new composition and crystal structure to achieve superior ionic conductivities. Here we report a new quaternary Na-ion conductor, Na10.8Sn1.9PS11.8, exhibiting a high ionic conductivity of 0.67 mS cm−1 at 25 °C. This high ionic conductivity originates from the presence of a large number of intrinsic Na-vacancies and three-dimensional Na-ion conduction pathways, which has been confirmed by single-crystal X-ray diffraction and first-principles calculations. The Na10.8Sn1.9PS11.8 phase is further evaluated as an electrolyte in a Na-Sn alloy/TiS2 battery, demonstrating its potential application in all-solid-state NIBs.

AB - Sulfide-based Na-ion conductors are promising candidates as solid-state electrolytes (SSEs) for fabrication of solid-state Na-ion batteries (NIBs) because of their high ionic conductivities and low grain boundary resistance. Currently, most of the sulfide-based Na-ion conductors with high conductivities are focused on Na3PS4 phases and its derivatives. It is desirable to develop Na-ion conductors with new composition and crystal structure to achieve superior ionic conductivities. Here we report a new quaternary Na-ion conductor, Na10.8Sn1.9PS11.8, exhibiting a high ionic conductivity of 0.67 mS cm−1 at 25 °C. This high ionic conductivity originates from the presence of a large number of intrinsic Na-vacancies and three-dimensional Na-ion conduction pathways, which has been confirmed by single-crystal X-ray diffraction and first-principles calculations. The Na10.8Sn1.9PS11.8 phase is further evaluated as an electrolyte in a Na-Sn alloy/TiS2 battery, demonstrating its potential application in all-solid-state NIBs.

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