We demonstrate the high electrochemical performance of Na 2 FeS 2 in all-solid-state batteries with high reversibility. In addition, we evaluate the chemical state and crystal structure of Na 2 FeS 2 during the …
As a promising kind of solid electrolytes, sulfide-based solid electrolytes are desirable for the solid-state sodium batteries because of their relatively high sodium ionic conductivity, low grain boundary resistance, good plasticity, and moderate synthesis conditions, compared with oxide electrolytes , , , , , , , .
The battery using sodium sulfide (Na 2 S) as the active material in the positive electrode starts with charging, which facilitates the use of various materials for the negative electrode, including carbon materials and Sn materials without carrier ions.
Sodium metal has been considered as the promising anode for solid-state sodium batteries because of the low electrochemical potential (−2.71 V vs. standard hydrogen electrode) and high theoretical capacity (1166 mAh g −1) . However, the demonstrated capacity and cycling stability of fabricated batteries are not outstanding.
All-solid-state sodium-sulfur (Na/S) batteries comprise a sulfur active material in the positive electrode layer and sodium metal in the negative electrode layer and have a high energy density owing to the large theoretical capacity of sulfur (1672 mAh g −1) [ 3, 4 ].
In the existing process technology route, it is hard to determine the species of suitable adhesive, conductive additives introduced to improve the integrated performance of sulfide-based solid-state sodium batteries. The content of these additives is also hard to be quantified.
The novel positive electrode material developed in this study will contribute to the development of all-solid-state Na/S batteries. Yushi Fujita: Conceptualization, Methodology, Investigation, Writing – original draft. Akira Nasu: Conceptualization, Writing – review & editing. Atsushi Sakuda: Supervision, Writing – review & editing.
We demonstrate the high electrochemical performance of Na 2 FeS 2 in all-solid-state batteries with high reversibility. In addition, we evaluate the chemical state and crystal structure of Na 2 FeS 2 during the …
Request PDF | Iron Sulfide Na2FeS2 as Positive Electrode Material with High Capacity and Reversibility Derived from Anion–Cation Redox in All‐Solid‐State Sodium Batteries | It is desirable ...
"The new Na2FeS2 positive electrodes are well balanced in terms of materials, cost, and lifetime; we expect them to be put to practical use in all-solid-state sodium batteries," Professor Sakuda concluded. "In the future, we will continue our research to develop cheaper all-solid-state sodium batteries with even higher performance, by examining high input and output …
This paper reports the use of Na 2 FeS 2 with a specific structure consisting of edge-shared and chained FeS 4 as the host structure and as a high-capacity active electrode …
Organic materials can serve as sustainable electrodes in lithium batteries. This Review describes the desirable characteristics of organic electrodes and the corresponding batteries and how we ...
All-solid-state sodium-sulfur (Na/S) batteries are promising next-generation batteries with high safety and high energy density. Sodium sulfide (Na2S) has application as …
The all-solid-state sodium battery prototype using Na 2 FeS 2 as the cathode active material showed a high capacity of about 320 mAh/g per weight of Na 2 FeS 2, which was equivalent to the theoretical capacity. The group also found that the resulting battery can be reversibly charged and discharged for more than 300 cycles. It determined that ...
Solid-state sodium batteries are among the most promising candidates for replacing conventional lithium-ion batteries for next-generation electrochemical energy storage systems. Their advantages include abundant Na resources, lower cost, enhanced safety, and …
A research group led by Associate Professor Atsushi Sakuda, President Masahiro Tatsumisago, and Professor Akitoshi Hayashi, at the Graduate School of Engineering, Osaka Metropolitan University, has successfully developed a new positive electrode, made of Na2FeS2, for all-solid-state sodium batteries. The batteries have a high energy ...
Sodium sulfide (Na2S) has application as active material in positive electrodes owing to its advantages such as low cost, low toxicity, and a large theoretical capacity. However, the electronic ...
A research group led by Associate Professor Atsushi Sakuda, President Masahiro Tatsumisago, and Professor Akitoshi Hayashi, at the Graduate School of Engineering, Osaka Metropolitan University, has …
Sulfide solid-state electrolytes (SSSEs) have garnered overwhelming attention as promising candidates for high-energy-density all-solid-state sodium batteries (ASSSBs) due to their high room-temperature ionic conductivity and excellent mechanical properties.
Sulfide-based solid sodium electrolytes are categorized into five classes. Conductivity reduces in liquid-phase synthesis compared to solid-state routes. AI technologies can be leveraged to discover more stable sulfide solid electrolyte.
Osaka Metropolitan University scientists have successfully developed a new positive electrode material Na2FeS2, consisting of sodium, iron, and sulfur. During testing, batteries using the Na2FeS2 positive electrode had a high energy storage capacity and could be charged and discharged for more than 300 cycles. Because the Na2FeS2 is made of …
Sulfide solid-state electrolytes (SSSEs) have garnered overwhelming attention as promising candidates for high-energy-density all-solid-state sodium batteries (ASSSBs) due …
We demonstrate the high electrochemical performance of Na 2 FeS 2 in all-solid-state batteries with high reversibility. In addition, we evaluate the chemical state and crystal structure of Na 2 FeS 2 during the charge–discharge process and reveal the relationship between the structural evolution and redox reaction with anion–cation redox.
All-solid-state sodium-sulfur (Na/S) batteries are promising next-generation batteries with high safety and high energy density. Sodium sulfide (Na2S) has application as active material...
Non-aqueous sodium-ion batteries (SiBs) are a viable electrochemical energy storage system for grid storage. However, the practical development of SiBs is hindered …
Unfortunately, however, the Na + ion does have a larger radius (1.06 Å) than that of the Li + ion(0.76 Å), which in general will cause some problems for SIBs materials [16], [170].The larger radius creates unstable cathodes and anodes during charge/discharge process, leading to a hindered cycling performance [17], [18].Additionally, the Na + ion possesses a …
Solid-state sodium batteries are among the most promising candidates for replacing conventional lithium-ion batteries for next-generation electrochemical energy storage …
NaCrO 2 is a Fundamentally Safe Positive Electrode Material for Sodium-Ion Batteries with Liquid Electrolytes. Xin Xia 2,1 and J. R. Dahn 3,4,1. Published 18 November 2011 • ©2011 ECS - The Electrochemical …
Multiphase layered transition metal oxides (LTMOs) for sodium ion battery (SIB) positive electrodes with phase interfaces across multiple length scales are a promising avenue toward practical, high-performance SIBs. Combinations of phases can complement each other''s strengths and mitigate their weaknesses if their interfaces are carefully controlled. Intra- and …
All-solid-state sodium-sulfur (Na/S) batteries are promising next-generation batteries with high safety and high energy density. Sodium sulfide (Na 2 S) has application as active material in positive electrodes owing to its advantages such as low cost, low toxicity, and a large theoretical capacity.
The all-solid-state sodium battery prototype using Na 2 FeS 2 as the cathode active material showed a high capacity of about 320 mAh/g per weight of Na 2 FeS 2, which was equivalent to the theoretical capacity. The …
Osaka Metropolitan University scientists have successfully developed a new positive electrode material Na2FeS2, consisting of sodium, iron, and sulfur. During testing, batteries using the Na2FeS2 positive electrode had a high energy storage capacity and could be charged and discharged for more than 300 cycles. Because the Na2FeS2 is made of …
Non-aqueous sodium-ion batteries (SiBs) are a viable electrochemical energy storage system for grid storage. However, the practical development of SiBs is hindered mainly by the sluggish...
Sulfide-based solid sodium electrolytes are categorized into five classes. Conductivity reduces in liquid-phase synthesis compared to solid-state routes. AI technologies …
The most prominent and widely used electrical energy storage devices are lithium-ion batteries (LIBs), which in recent years have become costly and deficient. Consequently, new energy storage devices must be introduced into the current market. Sodium-ion batteries (SIBs) are starting to emerge as a promising solution because of sodium''s …
This paper reports the use of Na 2 FeS 2 with a specific structure consisting of edge-shared and chained FeS 4 as the host structure and as a high-capacity active electrode material. An all-solid-state sodium cell that uses Na 2 FeS 2 exhibits a high capacity of 320 mAh g −1, which is close to the theoretical two-electron reaction ...
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