scholarly journals Tin Oxide Encapsulated into Pyrolyzed Chitosan as a Negative Electrode for Lithium Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1156
Author(s):  
Andrzej P. Nowak ◽  
Maria Gazda ◽  
Marcin Łapiński ◽  
Zuzanna Zarach ◽  
Konrad Trzciński ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Tin Oxide ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Hydroxyl Groups ◽  
Potential Candidate ◽  
Surface Hydroxyl ◽  
Diffusion Controlled

Tin oxide is one of the most promising electrode materials as a negative electrode for lithium-ion batteries due to its higher theoretical specific capacity than graphite. However, it suffers lack of stability due to volume changes and low electrical conductivity while cycling. To overcome these issues, a new composite consisting of SnO2 and carbonaceous matrix was fabricated. Naturally abundant and renewable chitosan was chosen as a carbon source. The electrode material exhibiting 467 mAh g−1 at the current density of 18 mA g−1 and a capacity fade of only 2% after 70 cycles is a potential candidate for graphite replacement. Such good electrochemical performance is due to strong interaction between amine groups from chitosan and surface hydroxyl groups of SnO2 at the preparation stage. However, the charge storage is mainly contributed by a diffusion-controlled process showing that the best results might be obtained for low current rates.

scholarly journals Advances in the Applications of Graphene-Based Nanocomposites in Clean Energy Materials

Crystals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 47
Author(s):  
Yiqiu Xiang ◽  
Ling Xin ◽  
Jiwei Hu ◽  
Caifang Li ◽  
Jimei Qi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fuel Cells ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Clean Energy ◽  
Proton Exchange ◽  
Energy Storage And Conversion ◽  
Thermoelectric Conversion

Extensive use of fossil fuels can lead to energy depletion and serious environmental pollution. Therefore, it is necessary to solve these problems by developing clean energy. Graphene materials own the advantages of high electrocatalytic activity, high conductivity, excellent mechanical strength, strong flexibility, large specific surface area and light weight, thus giving the potential to store electric charge, ions or hydrogen. Graphene-based nanocomposites have become new research hotspots in the field of energy storage and conversion, such as in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion. Graphene as a catalyst carrier of hydrogen fuel cells has been further modified to obtain higher and more uniform metal dispersion, hence improving the electrocatalyst activity. Moreover, it can complement the network of electroactive materials to buffer the change of electrode volume and prevent the breakage and aggregation of electrode materials, and graphene oxide is also used as a cheap and sustainable proton exchange membrane. In lithium-ion batteries, substituting heteroatoms for carbon atoms in graphene composite electrodes can produce defects on the graphitized surface which have a good reversible specific capacity and increased energy and power densities. In solar cells, the performance of the interface and junction is enhanced by using a few layers of graphene-based composites and more electron-hole pairs are collected; therefore, the conversion efficiency is increased. Graphene has a high Seebeck coefficient, and therefore, it is a potential thermoelectric material. In this paper, we review the latest progress in the synthesis, characterization, evaluation and properties of graphene-based composites and their practical applications in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion.

Recent progress in rechargeable lithium batteries with organic materials as promising electrodes

2016 ◽  
Vol 4 (19) ◽  
pp. 7091-7106 ◽  
Author(s):  
Jian Xie ◽  
Qichun Zhang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Batteries ◽  
Recent Progress ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Positive Electrode ◽  
Rechargeable Lithium Batteries ◽  
Organic Electrode ◽  
Negative Electrode Materials

Different organic electrode materials in lithium-ion batteries are divided into three types: positive electrode materials, negative electrode materials, and bi-functional electrode materials, and are further discussed.

Novel Co3O4/Carbon Nanofiber Composite Electrode with High Li-Storage Capacity for Lithium Ion Batteries

2011 ◽  
Vol 197-198 ◽  
pp. 1113-1116 ◽  
Author(s):  
Wen Li Yao ◽  
Jin Qing Chen ◽  
An Yun Li ◽  
Xin Bing Chen
Keyword(s):  
Composite Materials ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Storage Capacity ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Li Storage

The platelike Co3O4/carbon nanofiber (CNF) composite materials were synthesized by the calcination of β-Co(OH)2/CNF precursor prepared by a surfactant-free hydrothermal method. As negative electrode materials for lithium-ion batteries, the platelike Co3O4/CNF composites can deliver a high reversible capacity of 900 mAh g-1 for a life extending over hundreds of cycles at a current density of 100 mA g-1. The high Li-storage capacity and excellent cycling performance for Co3O4/CNF composite materials may mainly attribute to the beneficial effect of the CNFs addition on enhancing structural stability and electrical conductivity of Co3O4 platelets.

scholarly journals A mechanistic study of mesoporous TiO2 nanoparticle negative electrode materials with varying crystallinity for lithium ion batteries

2020 ◽  
Vol 8 (6) ◽  
pp. 3333-3343 ◽  
Author(s):  
Changjian Deng ◽  
Miu Lun Lau ◽  
Chunrong Ma ◽  
Paige Skinner ◽  
Yuzi Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Power Density ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
Mesoporous Tio2 ◽  
Mechanistic Study ◽  
Negative Electrodes ◽  
Negative Electrode Materials

Nanoscale oxide-based negative electrodes are of great interest for lithium ion batteries due to their high energy/power density, and enhanced safety. The crystallinity effect of mesoporous TiO2 nanoparticle electrode was investigated in this work.

Synthesis of Tin Oxide/Sponge Carbon Composite as Anode Material for Lithium-Ion Battery

2021 ◽  
Vol 21 (3) ◽  
pp. 1493-1499
Author(s):  
Shugui Quan ◽  
Chuanqi Feng ◽  
Yao Xiao
Keyword(s):  
Lithium Ion Battery ◽  
Tin Oxide ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Future Application ◽  
Solvothermal Reaction ◽  
Electrochemical Performances ◽  
Rate Performance

Tin oxide/sponge carbon composite (SnO2/C) is synthesized by solvothermal reaction. The expected electrode materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectrum. Related electrochemical properties are carried out by battery comprehensive testing system. The composite could remain its specific capacity at 660.5 mAh g−1 after 200 cycles and behaved superior rate performance. The experimental results show that SnO2/C composite not only owned improved conductivity but also stable frame structure during lithiation/delithiation processes. So SnO2/C composite behaved higher reversible specific capacity and rate performance than those of pure SnO2 or SnC2O4. Based on its outstanding electrochemical performances, the SnO2/C anode electrode is a hopeful candidate for future application in lithium ion battery system.

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