Synthesis, structure and electrochemical performance of the argyrodite Li 6 PS 5 Cl solid electrolyte for Li-ion solid state batteries

2016 ◽  
Vol 215 ◽  
pp. 93-99 ◽  
Author(s):  
Chuang Yu ◽  
Lambert van Eijck ◽  
Swapna Ganapathy ◽  
Marnix Wagemaker
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Solid Electrolyte ◽  
Solid State Batteries ◽  
Li Ion

Enhancing interfacial contact in all solid state batteries with a cathode-supported solid electrolyte membrane framework

2019 ◽  
Vol 12 (3) ◽  
pp. 938-944 ◽  
Author(s):  
Xinzhi Chen ◽  
Wenjun He ◽  
Liang-Xin Ding ◽  
Suqing Wang ◽  
Haihui Wang
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Solid Electrolyte ◽  
Electrolyte Membrane ◽  
Interfacial Contact ◽  
Solid State Batteries ◽  
All Solid State Batteries

A cathode-supported solid electrolyte membrane framework with enhanced interfacial contact can significantly improve the electrochemical performance of all solid state batteries.

scholarly journals Reduced Sintering Temperatures of Li+ Conductive Li1.3Al0.3Ti1.7(PO4)3 Ceramics

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 408
Author(s):  
Katja Waetzig ◽  
Christian Heubner ◽  
Mihails Kusnezoff
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Cathode Material ◽  
Solid Electrolyte ◽  
Composite Cathode ◽  
Li Ion Batteries ◽  
Promising Candidate ◽  
Composite Cathodes ◽  
Solid State Batteries ◽  
Li Ion

All-solid-state batteries (ASSB) are considered promising candidates for future energy storage and advanced electric mobility. When compared to conventional Li-ion batteries, the substitution of Li-ion conductive, flammable liquids by a solid electrolyte and the application of Li-metal anodes substantially increase safety and energy density. The solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) provides high Li-ion conductivity of about 10−3 S/cm and is considered a highly promising candidate for both the solid electrolyte-separator and the ionically conductive part of the all-solid state composite cathode, consisting of the cathode material, the solid electrolyte, and an electron conductor. Co-sintering of the composite cathode is a sophisticated challenge, because temperatures above 1000 °C are typically required to achieve the maximum ionic conductivity of LATP but provoke reactions with the cathode material, inhibiting proper electrochemical functioning in the ASSB. In the present study, the application of sintering aids with different melting points and their impact on the sinterability and the conductivity of LATP were investigated by means of optical dilatometry and impedance spectroscopy. The microstructure of the samples was analyzed by SEM. The results indicate that the sintering temperature can be reduced below 800 °C while maintaining high ionic conductivity of up to 3.6 × 10−4 S/cm. These insights can be considered a crucial step forward towards enable LATP-based composite cathodes for future ASSB.

scholarly journals First principles study on electrochemical and chemical stability of solid electrolyte–electrode interfaces in all-solid-state Li-ion batteries

2016 ◽  
Vol 4 (9) ◽  
pp. 3253-3266 ◽  
Author(s):  
Yizhou Zhu ◽  
Xingfeng He ◽  
Yifei Mo
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Solid Electrolyte ◽  
Chemical Stability ◽  
First Principles ◽  
Design Strategy ◽  
Li Ion Batteries ◽  
First Principles Study ◽  
Li Ion

This study provides the understanding and design strategy of solid electrolyte–electrode interfaces to improve electrochemical performance of all-solid-state Li-ion batteries.

scholarly journals Quantification of the Li-ion diffusion over an interface coating in all-solid-state batteries via NMR measurements

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ming Liu ◽  
Chao Wang ◽  
Chenglong Zhao ◽  
Eveline van der Maas ◽  
Kui Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Mechanical Stability ◽  
Interfacial Area ◽  
Electrical Currents ◽  
Cell Stability ◽  
Solid State Batteries ◽  
Li Ion ◽  
The One

AbstractA key challenge for solid-state-batteries development is to design electrode-electrolyte interfaces that combine (electro)chemical and mechanical stability with facile Li-ion transport. However, while the solid-electrolyte/electrode interfacial area should be maximized to facilitate the transport of high electrical currents on the one hand, on the other hand, this area should be minimized to reduce the parasitic interfacial reactions and promote the overall cell stability. To improve these aspects simultaneously, we report the use of an interfacial inorganic coating and the study of its impact on the local Li-ion transport over the grain boundaries. Via exchange-NMR measurements, we quantify the equilibrium between the various phases present at the interface between an S-based positive electrode and an inorganic solid-electrolyte. We also demonstrate the beneficial effect of the LiI coating on the all-solid-state cell performances, which leads to efficient sulfur activation and prevention of solid-electrolyte decomposition. Finally, we report 200 cycles with a stable capacity of around 600 mAh g−1 at 0.264 mA cm−2 for a full lab-scale cell comprising of LiI-coated Li2S-based cathode, Li-In alloy anode and Li6PS5Cl solid electrolyte.

Li-ion conductivity and stability of hot-pressed LiTa2PO8 solid electrolyte for all-solid-state batteries

2020 ◽  
Vol 56 (3) ◽  
pp. 2425-2434
Author(s):  
Bing Huang ◽  
Biyi Xu ◽  
Jingxi Zhang ◽  
Zhihong Li ◽  
Zeya Huang ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Ion Conductivity ◽  
Solid State Batteries ◽  
Li Ion ◽  
All Solid State Batteries

scholarly journals Quantifying the local Li-ion diffusion over the grain boundaries of a protective coating, revealing the impact on the macroscopic Li-ion transport in an all-solid-state battery

2021 ◽  
Author(s):  
Ming Liu ◽  
Chao Wang ◽  
Chenglong Zhao ◽  
Eveline van der Maas ◽  
Kui Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Grain Boundaries ◽  
Mechanical Stability ◽  
Interface Reactions ◽  
Conflicting Demands ◽  
Solid State Batteries ◽  
Li Ion ◽  
The Impact

Abstract The key challenge for solid-state-batteries is to design electrode-electrolyte interfaces that combine (electro)chemical and mechanical stability with facile Li-ion transport. Typically, this presents conflicting demands, the solid electrolyte-electrode interface-area should be maximized to facilitate high currents, while it should be minimized to reduce the parasitic interface reactions and enhance stability. Addressing these issues would greatly benefit from establishing the impact of interface coatings on local Li-ion transport over the grain boundaries. Here, the three-phase Li-ion transport, between solid electrolyte, coating and electrode is revealed using exchange-NMR, disentangling the detailed quantitative impact of the coating on the Li-ion transport in solid state batteries. A Li2S cathode is coated by LiI, providing a ductile and conductive interface with the argyrodite-sulfur electrolyte, where the exchange-NMR demonstrates that this enhances the interface transport to such an extent that the commonly applied nanosizing of the cathodic mixture can be abandoned. This leads to facile sulfur activation, preventing solid-electrolyte decomposition, in micron-sized cathodic mixtures, that can be related to the role of coatings on the Li-ion transport, providing perspectives for sulfur based solid-state-batteries.

Rational Design of Quasi Zero-Strain NCM Cathode Materials for Minimizing Volume Change Effects in All-Solid-State Batteries

2019 ◽  
Author(s):  
Florian Strauss ◽  
Lea de Biasi ◽  
A-Young Kim ◽  
Jonas Hertle ◽  
Simon Schweidler ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Cathode Materials ◽  
Rational Design ◽  
Electrode Materials ◽  
Cycling Performance ◽  
Mechanical Degradation ◽  
Volume Changes ◽  
Solid State Batteries ◽  
All Solid State Batteries

Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with the goal of substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due to particle fracture, among others. Unlike solid electrolytes, liquid electrolytes are somewhat capable of accommodating morphological changes. In SSBs, the rigidity of the materials used typically leads to adverse contact loss at the interfaces of cathode material and solid electrolyte during cycling. Hence, designing zero- or low-strain electrode materials for application in next-generation SSBs is desirable. In the present work, we report on novel Co-rich NCMs, NCM361 (60% Co) and NCM271 (70% Co), showing minor volume changes up to 4.5 V vs Li<sup>+</sup>/Li, as determined by <i>operando</i> X-ray diffraction and pressure measurements of LIB pouch and pelletized SSB cells, respectively. Both cathode materials exhibit good cycling performance when incorporated into SSB cells using argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolyte, albeit their morphology and secondary particle size have not yet been optimized.

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