Origin of anomalous high-rate Na-ion electrochemistry in layered bismuth telluride anodes

Cui, Jiang; Zheng, Hongkui; Zhang, Zilong; Hwang, Sooyeon; Yang, Xiao‐Qing; He, Kai

doi:10.1016/j.matt.2021.01.005

Cited by 34 publications

(29 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak at 1.1 V represents the conversion reaction of Bi 2 Te 3 to metal Bi and Na 2 Te. 37 The following two peaks at 0.45 V and 0.6 V were assigned to the alloyed reaction between Bi and Na. 38 When it reaches the oxidation process, the two peaks at 0.6 V and 0.8 V belong to the stepwise desodiation of Na 3 Bi alloys to crystalline Bi.…”

Section: Resultsmentioning

confidence: 99%

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries

Pang

Fan

et al. 2022

Nanoscale

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries

Pang

Fan

et al. 2022

Nanoscale

View full text Add to dashboard Cite

show abstract

“…[13][14][15] Among chalcogenide elements, tellurium (Te) exhibits high electronic conductivity (2 × 10 2 S m −1 ), which leads the path to a promising application in PIB with a remarkable rate of performance at a high current density. [16][17][18][19] While a large amount of research activity has focused on lithium and sodium-ion batteries, there are not too many literatures in the field of PIBs. [20][21][22] Although Te is tested as a cathode for PIBs, the proposed reaction mechanisms remain controversial.…”

Section: Research Articlementioning

confidence: 99%

In Situ Atomic‐Scale Observation of Electrochemical (De)potassiation in Te Nanowires

Liu

Meng

Wang

et al. 2022

Small

View full text Add to dashboard Cite

Potassium‐ion batteries (PIBs) have great potential in energy storage due to their high abundance and low cost of potassium resources. Tellurium (Te) is a promising PIB cathode due to its high volumetric capacity and good electronic conductivity. However, the electrochemical (de)potassiation mechanism of Te remains elusive due to the lack of an effective method of directly observing the dynamic reaction at atomic resolution. Here, the phase transformations of single crystal Te on (de)potassiation are clearly revealed by in situ high‐resolution transmission electron microscopy and electron diffraction. Te undergoes a consecutive phase transformation during potassiation: from Te to K2Te3 in the initial potassiation, and then part of the K2Te3 to K5Te3 on further potassiation. The reaction has extremely high reversibility in the following depotassiation. By atomic‐scale observation, an anisotropic reaction mechanism where K+ intercalates into Te crystalline lattice preferentially through the (001) plane (having a large d‐spacing) is established during potassiation. While in the depotassiation process, K ions extract from the polycrystalline KxTe along the same diffusion path to form single crystal Te, indicating the potassium storage is highly reversible. The strong orientation‐dependent (de)potassiation mechanism revealed by this work provides implications for the future design of nanostructured cathodes for high‐performance PIBs.

show abstract

“…For some conversion-type electrodes, if the metal cation can react with Na (e.g., Sn, Sb, and Bi), the sodiation process usually undergoes an intercalation–conversion–alloying reaction pathway and exhibits different reaction kinetics during various reaction steps. − Such differences are probably caused by the difference in mobility of Na + in different lattice frames . Thus, it is necessary to further understand the differences in various conversion-type materials by in situ TEM.…”

Section: In Situ Temmentioning

confidence: 99%

Spatial and Temporal Analysis of Sodium-Ion Batteries

et al. 2021

View full text Add to dashboard Cite

As a promising alternative to the market-leading lithium-ion batteries, low-cost sodium-ion batteries (SIBs) are attractive for applications such as large-scale electrical energy storage systems. The energy density, cycling life, and rate performance of SIBs are fundamentally dependent on dynamic physiochemical reactions, structural change, and morphological evolution. Therefore, it is essential to holistically understand SIBs reaction processes, degradation mechanisms, and thermal/mechanical behaviors in complex working environments. The recent developments of advanced in situ and operando characterization enable the establishment of the structure–processing–property–performance relationship in SIBs under operating conditions. This Review summarizes significant recent progress in SIBs exploiting in situ and operando techniques based on X-ray and electron analyses at different time and length scales. Through the combination of spectroscopy, imaging, and diffraction, local and global changes in SIBs can be elucidated for improving materials design. The fundamental principles and state-of-the-art capabilities of different techniques are presented, followed by elaborative discussions of major challenges and perspectives.

show abstract

Origin of anomalous high-rate Na-ion electrochemistry in layered bismuth telluride anodes

Cited by 34 publications

References 61 publications

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries

In Situ Atomic‐Scale Observation of Electrochemical (De)potassiation in Te Nanowires

Spatial and Temporal Analysis of Sodium-Ion Batteries

Contact Info

Product

Resources

About

Origin of anomalous high-rate Na-ion electrochemistry in layered bismuth telluride anodes

Cited by 34 publications

References 61 publications

Insights into the sodium storage mechanism of Bi2Te3 nanosheets as superior anodes for sodium-ion batteries

Insights into the sodium storage mechanism of Bi2Te3 nanosheets as superior anodes for sodium-ion batteries

In Situ Atomic‐Scale Observation of Electrochemical (De)potassiation in Te Nanowires

Spatial and Temporal Analysis of Sodium-Ion Batteries

Contact Info

Product

Resources

About

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries

Insights into the sodium storage mechanism of Bi₂Te₃ nanosheets as superior anodes for sodium-ion batteries