A Lithium Amide-Borohydride Solid-State Electrolyte with Lithium-Ion Conductivities Comparable to Liquid Electrolytes

被引：98

作者：

Yan, Yigang ^{[1
]}

Kuhnel, Ruben-Simon ^{[1
]}

Remhof, Arndt ^{[1
]}

Duchene, Leo ^{[1
,2
]}

Reyes, Eduardo Cuervo ^{[1
]}

Rentsch, Daniel ^{[1
]}

Lodziana, Zbigniew ^{[3
]}

Battaglia, Corsin ^{[1
]}

机构：

[1] Swiss Fed Labs Mat Sci & Technol, Empa, CH-8600 Dubendorf, Switzerland

[2] Univ Geneva, Dept Chim Phys, CH-1211 Geneva, Switzerland

[3] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 19期

基金：

瑞士国家科学基金会;

关键词：

all-solid-state lithium-ion batteries; complex hydrides; solid-state electrolytes; SUPERIONIC CONDUCTORS; CRYSTAL-STRUCTURE; BATTERIES; LI10GEP2S12;

D O I：

10.1002/aenm.201700294

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High ionic conductivity of up to 6.4 x 10(-3) S cm(-1) near room temperature (40 degrees C) in lithium amide-borohydrides is reported, comparable to values of liquid organic electrolytes commonly employed in lithium-ion batteries. Density functional theory is applied coupled with X-ray diffraction, calorimetry, and nuclear magnetic resonance experiments to shed light on the conduction mechanism. A Li4Ti5O12 half-cell battery incorporating the lithium amide-borohydride electrolyte exhibits good rate performance up to 3.5 mA cm(-2) (5 C) and stable cycling over 400 cycles at 1 C at 40 degrees C, indicating high bulk and interfacial stability. The results demonstrate the potential of lithium amide-borohydrides as solid-state electrolytes for high-power lithium-ion batteries.

引用

页数：7

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