Revealing the Support Effect on Enhancing Lithium Borohydride Ionic Conductors

2021 ◽  
Author(s):  
Guoyu Yang ◽  
Chen Xie ◽  
Yongtao Li ◽  
Hai-Wen Li ◽  
Dongming Liu ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Porous Materials ◽  
Support Effect ◽  
Ionic Conductors ◽  
Lithium Borohydride ◽  
Efficient Route

Confinement of LiBH4 into porous materials is an efficient route to enhance their lithium ionic conductivity, which seems to be associated with types of scaffold and its mixture ratios. In...

How Certain Are the Reported Ionic Conductivities of Thiophosphate-Based Solid Electrolytes? an Interlaboratory Study

2020 ◽  
Author(s):  
Saneyuki Ohno ◽  
Tim Bernges ◽  
Johannes Buchheim ◽  
Marc Duchardt ◽  
Anna-Katharina Hatz ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Ionic Conductivity ◽  
Relative Standard Deviation ◽  
Solid Electrolytes ◽  
Ionic Conductivities ◽  
Ionic Conductors ◽  
Energy Storage Devices ◽  
Activation Barriers ◽  
Storage Devices ◽  
Relative Standard

<p>Owing to highly conductive solid ionic conductors, all-solid-state batteries attract significant attention as promising next-generation energy storage devices. A lot of research is invested in the search and optimization of solid electrolytes with higher ionic conductivity. However, a systematic study of an <i>interlaboratory reproducibility</i> of measured ionic conductivities and activation energies is missing, making the comparison of absolute values in literature challenging. In this study, we perform an uncertainty evaluation via a Round Robin approach using different Li-argyrodites exhibiting orders of magnitude different ionic conductivities as reference materials. Identical samples are distributed to different research laboratories and the conductivities and activation barriers are measured by impedance spectroscopy. The results show large ranges of up to 4.5 mScm<sup>-1</sup> in the measured total ionic conductivity (1.3 – 5.8 mScm<sup>-1</sup> for the highest conducting sample, relative standard deviation 35 – 50% across all samples) and up to 128 meV for the activation barriers (198 – 326 meV, relative standard deviation 5 – 15%, across all samples), presenting the necessity of a more rigorous methodology including further collaborations within the community and multiplicate measurements.</p>

Defect-Mediated Conductivity Enhancements in Na3-xPn1-xWxS4 (Pn = P, Sb) using Aliovalent Substitutions

2019 ◽  
Author(s):  
Till Fuchs ◽  
Sean Culver ◽  
Paul Till ◽  
Wolfgang Zeier
Keyword(s):  
Ionic Conductivity ◽  
Vacancy Concentration ◽  
Sodium Ion ◽  
High Ionic Conductivity ◽  
Ionic Conductors ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Batteries ◽  
Ion Conducting ◽  
Very High

<p>The sodium-ion conducting family of Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, with <i>Pn</i> = P, Sb, have gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, the solid solutions with WS<sub>4</sub><sup>2-</sup> introduction are explored. The influence of the substitution with WS<sub>4</sub><sup>2-</sup> for PS<sub>4</sub><sup>3-</sup> and SbS<sub>4</sub><sup>3-</sup>, respectively, is monitored using a combination of X-ray diffraction, Raman and impedance spectroscopy. With increasing vacancy concentration improvements resulting in a very high ionic conductivity of 13 ± 3 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>P<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> and 41 ± 8 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>Sb<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> can be observed. This work acts as a stepping-stone towards further engineering of ionic conductors using vacancy-injection via aliovalent substituents.</p>

Defect-Mediated Conductivity Enhancements in Na3-xPn1-xWxS4 (Pn = P, Sb) using Aliovalent Substitutions

2019 ◽  
Author(s):  
Till Fuchs ◽  
Sean Culver ◽  
Paul Till ◽  
Wolfgang Zeier
Keyword(s):  
Ionic Conductivity ◽  
Vacancy Concentration ◽  
Sodium Ion ◽  
High Ionic Conductivity ◽  
Ionic Conductors ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Batteries ◽  
Ion Conducting ◽  
Very High

<p>The sodium-ion conducting family of Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, with <i>Pn</i> = P, Sb, have gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, the solid solutions with WS<sub>4</sub><sup>2-</sup> introduction are explored. The influence of the substitution with WS<sub>4</sub><sup>2-</sup> for PS<sub>4</sub><sup>3-</sup> and SbS<sub>4</sub><sup>3-</sup>, respectively, is monitored using a combination of X-ray diffraction, Raman and impedance spectroscopy. With increasing vacancy concentration improvements resulting in a very high ionic conductivity of 13 ± 3 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>P<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> and 41 ± 8 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>Sb<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> can be observed. This work acts as a stepping-stone towards further engineering of ionic conductors using vacancy-injection via aliovalent substituents.</p>

scholarly journals Anion ordering enables fast H− conduction at low temperatures

2021 ◽  
Vol 7 (23) ◽  
pp. eabf7883
Author(s):  
Hiroki Ubukata ◽  
Fumitaka Takeiri ◽  
Kazuki Shitara ◽  
Cédric Tassel ◽  
Takashi Saito ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Structural Transition ◽  
Hexagonal Lattice ◽  
Ionic Conductors ◽  
Activation Barriers ◽  
Energy Devices ◽  
Energy Applications ◽  
Chemical Disorder ◽  
New Energy

The introduction of chemical disorder by substitutional chemistry into ionic conductors is the most commonly used strategy to stabilize high-symmetric phases while maintaining ionic conductivity at lower temperatures. In recent years, hydride materials have received much attention owing to their potential for new energy applications, but there remains room for development in ionic conductivity below 300°C. Here, we show that layered anion-ordered Ba2−δH3−2δX (X = Cl, Br, and I) exhibit a remarkable conductivity, reaching 1 mS cm−1 at 200°C, with low activation barriers allowing H− conduction even at room temperature. In contrast to structurally related BaH2 (i.e., Ba2H4), the layered anion order in Ba2−δH3−2δX, along with Schottky defects, likely suppresses a structural transition, rather than the traditional chemical disorder, while retaining a highly symmetric hexagonal lattice. This discovery could open a new direction in electrochemical use of hydrogen in synthetic processes and energy devices.

Conductivity-Temperature Dependent Studies on MG49 Doped Lithium Triflate Salt

2015 ◽  
Vol 1107 ◽  
pp. 181-186
Author(s):  
Zaidatul Salwa Mahmud ◽  
N.H.M. Zaki ◽  
R. Zakaria ◽  
Mohamad Faizul Yahya ◽  
Ab Malik Marwan Ali
Keyword(s):  
Ionic Conductivity ◽  
Elevated Temperatures ◽  
Ethylene Carbonate ◽  
Ionic Mobility ◽  
Ionic Conductors ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Lithium Triflate ◽  
Mobility Of Charge Carriers ◽  
Solution Cast

This paper reports on the conductivity-temperature studies of gel polymer electrolytes (GPEs) based on 49% poly (methyl methacrylate) grafted-natural rubber (MG49) doped with lithium triflate salt (LiTf) and plasticized with ethylene carbonate (EC). The GPE films are prepared by solution cast technique. The X-ray diffraction (XRD) studies reveal the polymer electrolyte systems are amorphous. AC impedance spectroscopy is carried out in the temperature range between 303 and 373 K. The magnitudes of conductivity observed are strongly dependent on salt concentration and temperature. The high ionic conductivity at elevated temperatures of GPE is attributed to the high ionic mobility of charge carriers. The ionic migration is seen to follow the VTF behavior and approaches to Arrhenius rule at high and low at temperature. Ionic conductivity relaxation appears to be a characteristic of the ionic polarization and the modulus formalism studies confirmed the GPEs in the present investigation are ionic conductors.

scholarly journals Ammonia, a Switch for Controlling High Ionic Conductivity in Lithium Borohydride Ammoniates

Joule ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 1522-1533 ◽  
Author(s):  
Tengfei Zhang ◽  
Yongming Wang ◽  
Tao Song ◽  
Hikaru Miyaoka ◽  
Keita Shinzato ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
High Ionic Conductivity ◽  
Lithium Borohydride

Solid-state and liquid-free elastomeric ionic conductors with autonomous self-healing ability

2020 ◽  
Vol 7 (11) ◽  
pp. 2994-3004 ◽  
Author(s):  
Xinxin Qu ◽  
Wenwen Niu ◽  
Rui Wang ◽  
Zequan Li ◽  
Yue Guo ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
High Ionic Conductivity ◽  
Self Healing ◽  
Ionic Conductors ◽  
Pressure Independent ◽  
Conductive Elastomers

Solid-state and liquid-free self-healing ion-conductive elastomers with high ionic conductivity are developed and exploited as stretchable and pressure-independent touch sensors.

Aluminum based sulfide solid lithium ionic conductors for all solid state batteries

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6661-6667 ◽  
Author(s):  
S. Amaresh ◽  
K. Karthikeyan ◽  
K. J. Kim ◽  
Y. G. Lee ◽  
Y. S. Lee
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Organic Liquid ◽  
Liquid Electrolyte ◽  
Ionic Conductors ◽  
Lithium Secondary Batteries ◽  
Solid State Batteries ◽  
All Solid State Batteries ◽  
The Cost

The ionic conductivity of a Li–Al–Ge–P–S based thio-LISICON solid electrolyte is equivalent to that of a conventional organic liquid electrolyte used in lithium secondary batteries. The usage of aluminum brings down the cost of the solid electrolyte making it suitable for commercial solid state batteries.

Effect of nanoporous structure and polymer brushes on the ionic conductivity of poly(methacrylic acid)/anode aluminum oxide hybrid membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70204-70210 ◽  
Author(s):  
Feng Chen ◽  
Xiaoping Jiang ◽  
Tairong Kuang ◽  
Lingqian Chang ◽  
Dajiong Fu ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Aluminum Oxide ◽  
Porous Materials ◽  
Methacrylic Acid ◽  
Polymer Brushes ◽  
Nanoporous Structure ◽  
Hybrid Membranes ◽  
Chemical Studies ◽  
Anode Aluminum Oxide

Anode aluminum oxide (AAO) porous materials have been widely used in ionic translocation for many biological and chemical studies.

Utilizing non-stoichiometry in Nd2Zr2O7pyrochlore: exploring superior ionic conductors

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97566-97579 ◽  
Author(s):  
P. Anithakumari ◽  
V. Grover ◽  
C. Nandi ◽  
K. Bhattacharyya ◽  
A. K. Tyagi
Keyword(s):  
Ionic Conductivity ◽  
Ionic Conductors ◽  
And Control ◽  
Disordered Regions

The optimisation and control of ordered and disordered regions in non-stoichiometric Nd2−xZr2+xO7+x/2pyrochlore system lead to enhancement of ionic conductivity.

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