scholarly journals An electrochemically stable defect-free glassy electrolyte formed at room temperature for all-solid-state sodium batteries

2021 ◽  
Author(s):  
Xiaowei Chi ◽  
Ye Zhang ◽  
Fang Hao ◽  
Steven Kmiec ◽  
Hui Dong ◽  
...  
Keyword(s):  
Solid State ◽  
Network Structure ◽  
Room Temperature ◽  
Glass Structure ◽  
Electronic Conductivity ◽  
Microstructural Analysis ◽  
Glass Network ◽  
Electrochemical Stability ◽  
Sodium Batteries ◽  
Ion Conducting

Abstract All-solid-state sodium batteries (ASSSBs) are promising candidates for grid-scale energy storage applications. To date, however, there are no commercialized ASSSBs due in part to the lack of a solid electrolyte (SE) that meets all of the requirements of low cost, facile fabrication, high Na+ conductivity, electrochemical stability, and is resistant to sodium metal dendrite penetration. In this work, we report a family of oxysulfide glass SEs (Na3PS4−xOx, where 0 < x ≤ 0.6) that combine the advantages of sulfides and oxides, we demonstrate stable electrochemical cycling of Na metal for hundreds of hours and the highest critical current density of 2.3 mA cm−2 among all Na-ion conducting sulfide-based SEs. These performance enhancements are found to be associated with the ability of the oxysulfide glass to undergo room temperature pressure induced amorphization that creates a fully homogeneous glass structure that has robust mechanics and substantial chemical and electrochemical stability. Microstructural analysis revealed that the added oxygen creates a glassy network structure by forming bridging oxygen units resulting in a significantly stronger defect-free glass network and two orders of magnitude lower electronic conductivity compared to the fully ionic and non-network structure of Na3PS4. We show ambient-temperature sodium-sulfur batteries (ATSSBs) can be fabricated from these SEs that demonstrate the highest specific energy among the current sodium batteries. The unique room-temperature processing of composite SE structures may provide a sustainable path forward for the further development of ATSSBs in particular and ASSSBs in general.

Core–Shell Fe1–[email protected] Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density

ACS Nano ◽  
2018 ◽  
Vol 12 (3) ◽  
pp. 2809-2817 ◽  
Author(s):  
Hongli Wan ◽  
Jean Pierre Mwizerwa ◽  
Xingguo Qi ◽  
Xin Liu ◽  
Xiaoxiong Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Room Temperature ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Sodium Batteries

Network Former Mixing (NFM) Effects in Ion-Conducting Glasses - Structure/Property Correlations Studied by Modern Solid-State NMR Techniques

2016 ◽  
Vol 6 ◽  
pp. 144-193 ◽  
Author(s):  
Hellmut Eckert
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Glass Structure ◽  
Energy Storage And Conversion ◽  
Structure Property ◽  
Local Environments ◽  
Ion Conducting ◽  
Multiple Network ◽  
Nmr Methods ◽  
Property Correlations

Glassy solid electrolytes are important integral components for all-solid-state devices for energy storage and conversion. The use of multiple network formers is an important part of their design strategy for specific applications. In many glass systems the interaction between the different network formers results in strongly non-linear variations in physical properties (network former mixing (NFM) effects), requiring a detailed understanding on a structural basis.The issues to be addressed involve both the structural organization and connectivities within the framework, the local environments and spatial distributions of the mobile ions, and the dynamical aspects of ion transport, to be discussed in relation to possible phase separation or nano-segregation effects. Besides Raman and X-ray photoelectron spectroscopies, solid state nuclear magnetic resonance (NMR) methods are particularly useful for providing detailed answers to such issues. The present review introduces the basic principles of modern solid state NMR methods and their applications to glass structure, with a particular focus on the characterization of network-former mixing effects in the most common lithium and sodium conducting oxide and chalcogenide glass systems. Based on the current state of the literature reviewed in the present work, some emerging general principles governing structure/property correlations are identified, to be tested by further experimenteation in the future.

scholarly journals Room-Temperature Mg-Ion Conduction Through Molecular Crystal Mg{N(SO2CF3)2}2(CH3OC5H9)2

2021 ◽  
Vol 9 ◽  
Author(s):  
Takaaki Ota ◽  
Shota Uchiyama ◽  
Keiichi Tsukada ◽  
Makoto Moriya
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Ionic Conductivity ◽  
Molecular Crystal ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Molecular Crystals ◽  
Transference Number ◽  
Ion Conducting ◽  
State Ionic

Molecular crystals have attracted increasing attention as a candidate for innovative solid electrolytes with solid-state Mg-ion conductivity. In this work, we synthesized a novel Mg-ion-conducting molecular crystal, Mg{N(SO2CF3)2}2(CH3OC5H9)2 (Mg(TFSA)2(CPME)2), composed of Mg bis(trifluoromethanesulfonyl)amide (Mg(TFSA)2) and cyclopentyl methyl ether (CPME) and elucidated its crystal structure. We found that the obtained Mg(TFSA)2(CPME)2 exhibits solid-state ionic conductivity at room temperature and a high Mg-ion transference number of 0.74. Contrastingly, most Mg-conductive inorganic solid electrolytes require heating above 150–300°C to exhibit ionic conductivity. These results further prove the suitability of molecular crystals as candidates for Mg-ion-conducting solid electrolytes.

scholarly journals 4 V room-temperature all-solid-state sodium battery enabled by a passivating cathode/hydroborate solid electrolyte interface

2020 ◽  
Vol 13 (12) ◽  
pp. 5048-5058
Author(s):  
Ryo Asakura ◽  
David Reber ◽  
Léo Duchêne ◽  
Seyedhosein Payandeh ◽  
Arndt Remhof ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Specific Energy ◽  
Room Temperature ◽  
Cell Voltage ◽  
Solid Electrolyte Interface ◽  
Electrolyte Interface ◽  
Sodium Batteries ◽  
Discharge Cell

A self-passivating cathode/electrolyte interface achieves stable, room-temperature long-term cycling of 4 V-class Na3(VOPO4)2F|Na4(CB11H12)2(B12H12)|Na all-solid-state sodium batteries with the highest reported discharge cell voltage and cathode-based specific energy.

Room-temperature all-solid-state sodium batteries with robust ceramic interface between rigid electrolyte and electrode materials

Nano Energy ◽  
2019 ◽  
Vol 65 ◽  
pp. 104040 ◽  
Author(s):  
Tu Lan ◽  
Chih-Long Tsai ◽  
Frank Tietz ◽  
Xian-Kui Wei ◽  
Marc Heggen ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Electrode Materials ◽  
Sodium Batteries

Composition Dependence of the Glass Network Structure in Li+-ion Conducting Glasses of (LiCl)x(LiPO3)1-x Studied by 31P MAS NMR

2013 ◽  
Vol 596 ◽  
pp. 31-34
Author(s):  
Yusuke Ogiwara ◽  
Kimiko Dejima ◽  
Toru Kyomen ◽  
Minoru Hanaya
Keyword(s):  
Phosphate Glass ◽  
Network Structure ◽  
Nmr Spectra ◽  
Composition Dependence ◽  
Glass Network ◽  
Mas Nmr ◽  
The Other ◽  
One Dimensional ◽  
Phosphate Chain ◽  
Ion Conducting

In order to obtain information about the structure of a typical Li+-ion conducting glass of (LiCl)x(LiPO3)1-x, 31P MAS NMR measurements were performed for the glass samples with different LiCl compositions x from 0 to 0.4. NMR spectra of the samples indicated the existence of two kinds of P atoms; one is that within the-P-O-P-O-P-chain of LiPO3, P(Q2), and the other is that at the ends of the chain, P(Q1). The ratio of the amount of P(Q1) to that of P(Q2) was observed to increase with the increment of x. The result shows that the addition of LiCl to the glass former of LiPO3 changes the glass network structure by cutting P-O bonds in one-dimensional phosphate chain, and the increment of the Li+-ion conductivity with the increase of x is concluded to be brought not only by the increase of the amount of LiCl dissolved into the interstices between the phosphate glass networks but also by the dispersion of the phosphate glass network structure.

Organic–inorganic hybrid electrolytes from ionic liquid-functionalized octasilsesquioxane for lithium metal batteries

2017 ◽  
Vol 5 (34) ◽  
pp. 18012-18019 ◽  
Author(s):  
Guang Yang ◽  
Chalathorn Chanthad ◽  
Hyukkeun Oh ◽  
Ismail Alperen Ayhan ◽  
Qing Wang
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Electrochemical Stability ◽  
Lithium Metal ◽  
Inorganic Hybrid ◽  
Lithium Metal Batteries

Ionic liquid-based solid electrolytes with outstanding room-temperature ionic conductivity and excellent electrochemical stability are developed for all-solid-state Li metal batteries.

Liquid-Phase Synthesis of Nanosized Na11Sn2PS12 Solid Electrolytes for Room Temperature All-Solid-State Sodium Batteries

2021 ◽  
Vol 4 (2) ◽  
pp. 1467-1473
Author(s):  
Wei Weng ◽  
Hongli Wan ◽  
Gaozhan Liu ◽  
Liping Wu ◽  
Jinghua Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Liquid Phase ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Phase Synthesis ◽  
Sodium Batteries

scholarly journals Flexible, solid-state, ion-conducting membrane with 3D garnet nanofiber networks for lithium batteries

2016 ◽  
Vol 113 (26) ◽  
pp. 7094-7099 ◽  
Author(s):  
Kun (Kelvin) Fu ◽  
Yunhui Gong ◽  
Jiaqi Dai ◽  
Amy Gong ◽  
Xiaogang Han ◽  
...  
Keyword(s):  
Solid State ◽  
Current Density ◽  
Room Temperature ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Hydrogen Electrode ◽  
Ion Conductor ◽  
Structural Reinforcement ◽  
Ion Conducting ◽  
A Current

Beyond state-of-the-art lithium-ion battery (LIB) technology with metallic lithium anodes to replace conventional ion intercalation anode materials is highly desirable because of lithium’s highest specific capacity (3,860 mA/g) and lowest negative electrochemical potential (∼3.040 V vs. the standard hydrogen electrode). In this work, we report for the first time, to our knowledge, a 3D lithium-ion–conducting ceramic network based on garnet-type Li6.4La3Zr2Al0.2O12 (LLZO) lithium-ion conductor to provide continuous Li+ transfer channels in a polyethylene oxide (PEO)-based composite. This composite structure further provides structural reinforcement to enhance the mechanical properties of the polymer matrix. The flexible solid-state electrolyte composite membrane exhibited an ionic conductivity of 2.5 × 10−4 S/cm at room temperature. The membrane can effectively block dendrites in a symmetric Li | electrolyte | Li cell during repeated lithium stripping/plating at room temperature, with a current density of 0.2 mA/cm2 for around 500 h and a current density of 0.5 mA/cm2 for over 300 h. These results provide an all solid ion-conducting membrane that can be applied to flexible LIBs and other electrochemical energy storage systems, such as lithium–sulfur batteries.

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