High performance lithium insertion negative electrode materials for electrochemical devices

2016 ◽  
Vol 387 ◽  
pp. 839-845 ◽  
Author(s):  
V.S. Reddy Channu ◽  
B. Rambabu ◽  
Kusum Kumari ◽  
Rajmohan R. Kalluru ◽  
Rudolf Holze
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Insertion ◽  
Electrochemical Devices ◽  
Negative Electrode Materials

Characterization of Li insertion mechanisms in negative electrode materials for Li-ion batteries by Mössbauer spectroscopy and first-principles calculations

2004 ◽  
Vol 835 ◽  
Author(s):  
P.E. Lippens ◽  
L. Aldon ◽  
C.M. Ionica ◽  
F. Robert ◽  
J. Olivier-Fourcade ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Electrode Materials ◽  
Mossbauer Spectroscopy ◽  
Negative Electrode ◽  
Theoretical Spectrum ◽  
Lithium Insertion ◽  
Li Ion Batteries ◽  
Mößbauer Spectroscopy ◽  
Li Ion ◽  
Negative Electrode Materials

ABSTRACTThe Mössbauer spectroscopy is an efficient experimental tool to study lithium insertion mechanisms in negative electrodes of Li-ion batteries at the atomic scale. However, a quantitative interpretation of the experimental data is often difficult due to the complexity of the spectra and we propose to use first-principle calculations of the hyperfine parameters. Three different types of negative electrode materials are considered. First, the experimental 119Sn Mössbauer spectrum obtained for the insertion of 3.5 Li into SnO is compared to the theoretical spectrum, which clearly establishes the existence of Li-Sn stable phases. Then, the analysis of the 121Sb Mössbauer spectra for metal antimonides at the end of the first discharge shows different behaviours depending on the lithium rate. Finally, tin and iron doped titanates are considered to study changes in Ti local environments during lithium insertion.

scholarly journals A Review of Electrospun Carbon Nanofiber-Based Negative Electrode Materials for Supercapacitors

Electrochem ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 236-250
Author(s):  
Arjun Prasad Tiwari ◽  
Tanka Mukhiya ◽  
Alagan Muthurasu ◽  
Kisan Chhetri ◽  
Minju Lee ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Smart Devices ◽  
Potential Candidate ◽  
Free Standing ◽  
High Capacitance ◽  
Negative Electrode Materials ◽  
Carbon Based

The development of smart negative electrode materials with high capacitance for the uses in supercapacitors remains challenging. Although several types of electrode materials with high capacitance in energy storage have been reported, carbon-based materials are the most reliable electrodes due to their high conductivity, high power density, and excellent stability. The most common complaint about general carbon materials is that these electrode materials can hardly ever be used as free-standing electrodes. Free-standing carbon-based electrodes are in high demand and are a passionate topic of energy storage research. Electrospun nanofibers are a potential candidate to fill this gap. However, the as-spun carbon nanofibers (ECNFs) have low capacitance and low energy density on their own. To overcome the limitations of pure CNFs, increasing surface area, heteroatom doping and metal doping have been chosen. In this review, we introduce the negative electrode materials that have been developed so far. Moreover, this review focuses on the advances of electrospun nanofiber-based negative electrode materials and their limitations. We put forth a future perspective on how these limitations can be overcome to meet the demands of next-generation smart devices.

Electrodeposited MoO x films as negative electrode materials for redox supercapacitors

2017 ◽  
Vol 225 ◽  
pp. 19-28 ◽  
Author(s):  
Kush K. Upadhyay ◽  
Tuyen Nguyen ◽  
Teresa M. Silva ◽  
Maria J. Carmezim ◽  
M. Fatima Montemor
Keyword(s):  
Electrode Materials ◽  
Negative Electrode ◽  
Negative Electrode Materials
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