scholarly journals Hunting Sodium Dendrites in NASICON-Based Solid-State Electrolytes

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Qiangqiang Zhang ◽  
Yaxiang Lu ◽  
Weichang Guo ◽  
Yuanjun Shao ◽  
Lilu Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Stability ◽  
Ceramic Surface ◽  
Metal Contacts ◽  
Practical Application ◽  
Sodium Batteries ◽  
Solid State Electrolytes ◽  
First Time ◽  
In Situ Carbonization

NASICON- (Na superionic conductor-) based solid-state electrolytes (SSEs) are believed to be attracting candidates for solid-state sodium batteries due to their high ionic conductivity and prospectively reliable stability. However, the poor interface compatibility and the formation of Na dendrites inhibit their practical application. Herein, we directly observed the propagation of Na dendrites through NASICON-based Na3.1Zr2Si2.1P0.9O12 SSE for the first time. Moreover, a fluorinated amorphous carbon (FAC) interfacial layer on the ceramic surface was simply developed by in situ carbonization of PVDF to improve the compatibility between Na metal and SSEs. Surprisingly, Na dendrites were effectively suppressed due to the formation of NaF in the interface when molten Na metal contacts with the FAC layer. Benefiting from the optimized interface, both the Na||Na symmetric cells and Na3V2(PO4)3||Na solid-state sodium batteries deliver remarkably electrochemical stability. These results offer benign reference to the maturation of NASICON-based solid-state sodium batteries.

Zirconia-supported solid-state electrolytes for high-safety lithium secondary batteries in a wide temperature range

2017 ◽  
Vol 5 (47) ◽  
pp. 24677-24685 ◽  
Author(s):  
Renjie Chen ◽  
Wenjie Qu ◽  
Ji Qian ◽  
Nan Chen ◽  
Yujuan Dai ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Wide Temperature Range ◽  
Solid State Electrolyte ◽  
Lithium Secondary Batteries ◽  
Temperature Range ◽  
Solid State Electrolytes

We fabricate a high-safety solid-state electrolyte by in situ immobilizing ionic liquids within a nanoporous zirconia-supported matrix.

Applying multi-scale silica-like three-dimensional networks in PEO matrix via in-situ crosslinking for high-performance solid composite electrolyte

2021 ◽  
Author(s):  
Jiawei Wu ◽  
Jing Chen ◽  
Xiaodong Wang ◽  
An'an Zhou ◽  
Zhenglong Yang
Keyword(s):  
Solid State ◽  
High Performance ◽  
Low Cost ◽  
Three Dimensional ◽  
Electrochemical Stability ◽  
Composite Electrolyte ◽  
Solid State Electrolyte ◽  
Multi Scale ◽  
In Situ Crosslinking

For the higher safety and energy density, solid-state electrolyte with better mechanical strength, thermal and electrochemical stability is a perfect choice. To improve the performance of PEO, usage of low-cost...

Atomistic insights into the screening and role of oxygen in enhancing the Li+ conductivity of Li7P3S11−xOx solid-state electrolytes

2019 ◽  
Vol 21 (48) ◽  
pp. 26358-26367
Author(s):  
Hanghui Liu ◽  
Zhenhua Yang ◽  
Qun Wang ◽  
Xianyou Wang ◽  
Xingqiang Shi
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Electrochemical Stability ◽  
Oxygen Doping ◽  
Solid State Electrolyte ◽  
Solid State Electrolytes

A solid-state electrolyte (L7P3S10.25O0.75) with good ionic conductivity and electrochemical stability is successfully designed by oxygen doping.

Synthesis and properties of poly(1,3-dioxolane) in-situ quasi-solid-state electrolytes via rare-earth triflate catalyst

2021 ◽  
Author(s):  
Guuanming Yang ◽  
Yanfang Zhai ◽  
Jianyao Yao ◽  
Shufeng Song ◽  
Liyang Lin ◽  
...  
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Ionic Conductivity ◽  
Ring Opening ◽  
Room Temperature ◽  
Ring Opening Polymerization ◽  
Solid State Electrolytes

We report rare-earth triflate catalyst Sc(OTf)3 for ring-opening polymerization of 1,3-dioxolane in-situ producing quasi-solid-state poly(1,3-dioxolane) electrolyte, which not only demonstrates superior ionic conductivity of 1.07 mS cm-1 at room temperature,...

A ceramic/polymer composite solid electrolyte for sodium batteries

2016 ◽  
Vol 4 (41) ◽  
pp. 15823-15828 ◽  
Author(s):  
Zhizhen Zhang ◽  
Qiangqiang Zhang ◽  
Cheng Ren ◽  
Fei Luo ◽  
Qiang Ma ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Polymer Composite ◽  
Solvent Free ◽  
Sodium Batteries ◽  
Composite Solid Electrolyte ◽  
First Time ◽  
Composite Solid

A solvent-free ceramic/polymer composite solid electrolyte has been proposed and demonstrated well in solid-state Na batteries for the first time.

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.

In-situ electron holography charactering Li ions accumulation in the interface between electrode and solid-state-electrolyte

2021 ◽  
Author(s):  
Yang Yang ◽  
Jie Cui ◽  
Hui-Juan Guo ◽  
Xi Shen ◽  
Yuan Yao ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Charge Distribution ◽  
Transport Mechanism ◽  
Electron Holography ◽  
Solid State Electrolyte ◽  
Solid State Batteries ◽  
Li Ion ◽  
Solid State Electrolytes

Intensive understanding of the Li-ion transport mechanism in solid-state-electrolytes (SSEs) is crucial for the buildup of industrially scalable solid-state batteries. Here, we report the charge distribution near the electrode/SSEs interface...

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