scholarly journals Investigation of structure and electrochemical properties of layered structure NaFexMn1-xO2

2020 ◽  
Vol 3 (4) ◽  
pp. 317-325
Author(s):  
Nguyen Thi Kieu Duyen ◽  
Huynh Le Thanh Nguyen ◽  
Nguyen Thi Thu Trang ◽  
Le My Loan Phung ◽  
Tran Van Man
Keyword(s):  
Layered Structure ◽  
Electrode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Rechargeable Batteries ◽  
Lattice Parameters ◽  
Constant Current ◽  
Metallic Sodium ◽  
Layered Oxides ◽  
Unit Cells

Layered oxides are promising electrode materials for sodium-ion batteries, the next generation of rechargeable batteries. The layered oxides with the tránition metallic manganese and iron have paid more attention due to its low-cost, eco-friendly, and facile preparation. In this work, the metallic sodium oxides with a layered structure based on Fe and Mn, NaFexMn1-xO2 (x = 1/3, 1/2 và 2/3) were synthesized via a solid-state reaction at 900 oC for 12–36 hours. All XRD patterns of NaFexMn1-xO2 pointed out the layered structure. In two ratio Fe:Mn = 1/3:2/3 and 1/2:1/2, the synthesized samples presented the P3-layered structure, while in ratio Fe:Mn = 2/3:1/3, the O3-structure was obtained. The lattice parameters were determined by Celref software. The lattice parameters and the volumic of unit cells depended on the ionic radius of cation Mn3+ and Fe3+. The Na-migration was studied by the cycling test with a constant current. The charge-discharge curves and the specific capacity depended on the ratio of Fe:Mn. The specific capacity was found out 120 mAh/g (1/2:1/2), 118 mAh/g (2/3:1/3), and 120 mAh/g (1/3:2/3). After 20 cycles, the capacity was maintained 77 mAh/g (1/2:1/2), 88 mAh/g (2/3:1/3), and 80 mAh/g (1/3:2/3).

scholarly journals Research Progress of NiMn Layered Double Hydroxides for Supercapacitors: A Review

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 747 ◽  
Author(s):  
Ai-Lan Yan ◽  
Xin-Chang Wang ◽  
Ji-Peng Cheng
Keyword(s):  
Layered Double Hydroxides ◽  
Electrode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Research Progress ◽  
Electrochemical Performances ◽  
Preparation Methods ◽  
Large Power ◽  
Supercapacitor Application ◽  
Double Hydroxides

The research on supercapacitors has been attractive due to their large power density, fast charge/discharge speed and long lifespan. The electrode materials for supercapacitors are thus intensively investigated to improve the electrochemical performances. Various transition metal layered double hydroxides (LDHs) with a hydrotalcite-like structure have been developed to be promising electrode materials. Earth-abundant metal hydroxides are very suitable electrode materials due to the low cost and high specific capacity. This is a review paper on NiMn LDHs for supercapacitor application. We focus particularly on the recent published papers using NiMn LDHs as electrode materials for supercapacitors. The preparation methods for NiMn LDHs are introduced first. Then, the structural design and chemical modification of NiMn LDH materials, as well as the composites and films derived from NiMn LDHs are discussed. These approaches are proven to be effective to enhance the performance of supercapacitor. Finally, the reports related to NiMn LDH-based asymmetric supercapacitors are summarized. A brief discussion of the future development of NiMn LDHs is also provided.

scholarly journals Nanohollow Carbon for Rechargeable Batteries: Ongoing Progresses and Challenges

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jiangmin Jiang ◽  
Guangdi Nie ◽  
Ping Nie ◽  
Zhiwei Li ◽  
Zhenghui Pan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Carbon Nanostructures ◽  
Active Sites ◽  
Electrode Materials ◽  
Mechanical Stability ◽  
High Surface ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Rechargeable Batteries

AbstractAmong the various morphologies of carbon-based materials, hollow carbon nanostructures are of particular interest for energy storage. They have been widely investigated as electrode materials in different types of rechargeable batteries, owing to their high surface areas in association with the high surface-to-volume ratios, controllable pores and pore size distribution, high electrical conductivity, and excellent chemical and mechanical stability, which are beneficial for providing active sites, accelerating electrons/ions transfer, interacting with electrolytes, and giving rise to high specific capacity, rate capability, cycling ability, and overall electrochemical performance. In this overview, we look into the ongoing progresses that are being made with the nanohollow carbon materials, including nanospheres, nanopolyhedrons, and nanofibers, in relation to their applications in the main types of rechargeable batteries. The design and synthesis strategies for them and their electrochemical performance in rechargeable batteries, including lithium-ion batteries, sodium-ion batteries, potassium-ion batteries, and lithium–sulfur batteries are comprehensively reviewed and discussed, together with the challenges being faced and perspectives for them.

scholarly journals Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2263 ◽  
Author(s):  
Xiaoning Wang ◽  
Dan Wu ◽  
Xinhui Song ◽  
Wei Du ◽  
Xiangjin Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
Active Sites ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Chemical Properties ◽  
Combine Carbon

Polyaniline has been widely used in high-performance pseudocapacitors, due to its low cost, easy synthesis, and high theoretical specific capacitance. However, the poor mechanical properties of polyaniline restrict its further development. Compared with polyaniline, functionalized carbon materials have excellent physical and chemical properties, such as porous structures, excellent specific surface area, good conductivity, and accessibility to active sites. However, it should not be neglected that the specific capacity of carbon materials is usually unsatisfactory. There is an effective strategy to combine carbon materials with polyaniline by a hybridization approach to achieve a positive synergistic effect. After that, the energy storage performance of carbon/polyaniline hybridization material has been significantly improved, making it a promising and important electrode material for supercapacitors. To date, significant progress has been made in the synthesis of various carbon/polyaniline binary composite electrode materials. In this review, the corresponding properties and applications of polyaniline and carbon hybrid materials in the energy storage field are briefly reviewed. According to the classification of different types of functionalized carbon materials, this article focuses on the recent progress in carbon/polyaniline hybrid materials, and further analyzes their corresponding properties to provide guidance for the design, synthesis, and component optimization for high-performance supercapacitors.

High specific capacity and excellent stability of interface-controlled MWCNT based anodes in lithium ion battery

2011 ◽  
Vol 1313 ◽  
Author(s):  
Indranil Lahiri ◽  
Sung-Woo Oh ◽  
Yang-Kook Sun ◽  
Wonbong Choi
Keyword(s):  
Electrode Materials ◽  
Specific Capacity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Operating Voltage ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Capacity Degradation ◽  
Li Ion ◽  
Very High

ABSTRACTRechargeable batteries are in high demand for future hybrid vehicles and electronic devices markets. Among various kinds of rechargeable batteries, Li-ion batteries are most popular for their obvious advantages of high energy and power density, ability to offer higher operating voltage, absence of memory effect, operation over a wider temperature range and showing a low self-discharge rate. Researchers have shown great deal of interest in developing new, improved electrode materials for Li-ion batteries leading to higher specific capacity, longer cycle life and extra safety. In the present study, we have shown that an anode prepared from interface-controlled multiwall carbon nanotubes (MWCNT), directly grown on copper current collectors, may be the best suitable anode for a Li-ion battery. The newly developed anode structure has shown very high specific capacity (almost 2.5 times as that of graphite), excellent rate capability, nil capacity degradation in long-cycle operation and introduced a higher level of safety by avoiding organic binders. Enhanced properties of the anode were well supported by the structural characterization and can be related to very high Li-ion intercalation on the walls of CNTs, as observed in HRTEM. This newly developed CNT-based anode structure is expected to offer appreciable advancement in performance of future Li-ion batteries.

Penta-BCN monolayer with high specific capacity and mobility as a compelling anode material for rechargeable batteries

2021 ◽  
Author(s):  
Lei Chen ◽  
Yang MinRui ◽  
Kong Fan ◽  
Wenling Du ◽  
Jiyuan Guo ◽  
...  
Keyword(s):  
Anode Material ◽  
First Principles ◽  
Metal Ion ◽  
Electrode Materials ◽  
Specific Capacity ◽  
High Capacity ◽  
Rechargeable Batteries ◽  
First Principles Calculations ◽  
High Specific Capacity ◽  
Increasing Demand

With the increasing demand for sustainable and clean energies, seeking high-capacity density electrode materials applied in the rechargeable metal-ion batteries is urgent. In this work, using first-principles calculations, we evaluate...

Revealing Practical Specific Capacity and Carbonyl Utilization of Multi-carbonyl Compounds for Organic Cathode Materials

2021 ◽  
Author(s):  
Jun-Lin Shi ◽  
Shi-Qin Xiang ◽  
Dai-Jian Su ◽  
Rongxing He ◽  
Liu-Bin Zhao
Keyword(s):  
Environmental Protection ◽  
Cathode Materials ◽  
Carbonyl Compounds ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Rechargeable Batteries ◽  
Next Generation

Organic carbonyl compounds are regarded as promising candidates for next-generation rechargeable batteries in terms of low cost, environmental protection, and high capacity. The carbonyl utilization is a key issue to...

scholarly journals PLR (Plastic Lithium Rechargeable) Batteries Using Nanoscale Materials: A Convenient Electrical Energy Power for the Future?

1999 ◽  
Vol 22 (2) ◽  
pp. 87-105 ◽  
Author(s):  
G. Campet ◽  
N. Treuil ◽  
A. Poquet ◽  
S. Y. Hwang ◽  
C. Labrugere ◽  
...  
Keyword(s):  
Low Temperature ◽  
Polymer Matrix ◽  
Electrode Materials ◽  
Low Cost ◽  
Electrical Energy ◽  
Rechargeable Batteries ◽  
Lithium Rechargeable Batteries ◽  
The Future ◽  
Electrolyte Membranes ◽  
Poly Acrylonitrile

This communication describes the synthesis of: (i) non toxic and low cost nanocrystalline electrode materials which can be advantageously prepared at low temperature; (ii) highly conductive electrolyte membranes formed by the nano-encapsulation within a poly (acrylonitrile)-based polymer matrix of a solution of LiPF6in organic solvants. The performances of rechargeable PLR (Plastic Lithium Rechargeable) batteries using the above mentioned components are presented.

Promoting the cyclic and rate performance of lithium-rich ternary materials via surface modification and lattice expansion

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93048-93056 ◽  
Author(s):  
Mohammed Adnan Mezaal ◽  
Limin Qu ◽  
Guanghua Li ◽  
Rui Zhang ◽  
Jiang Xuejiao ◽  
...  
Keyword(s):  
Surface Modification ◽  
Transition Metal Oxides ◽  
Lithium Batteries ◽  
Electrode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
High Energy ◽  
Lattice Expansion ◽  
Rate Performance ◽  
High Specific Capacity

Nickel-rich layered lithium transition-metal oxides have been studied intensively as high-energy positive-electrode materials for lithium batteries because of their high specific capacity and relatively low-cost.

scholarly journals Solid-State Synthesis of Layered MoS2 Nanosheets with Graphene for Sodium-Ion Batteries

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 660
Author(s):  
Ujjwala Chothe ◽  
Chitra Ugale ◽  
Milind Kulkarni ◽  
Bharat Kale
Keyword(s):  
Electrode Materials ◽  
Low Cost ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Sodium Ion ◽  
High Yield ◽  
Hybrid Architecture ◽  
Sodium Ion Batteries ◽  
Mos2 Nanosheets ◽  
Layered Mos2

Sodium-ion batteries have potential as energy-storage devices owing to an abundant source with low cost. However, most electrode materials still suffer from poor conductivity, sluggish kinetics, and huge volume variation. It is still challenging to explore apt electrode materials for sodium-ion battery applications to avoid the pulverization of electrodes induced by reversible intercalation of large sodium ions. Herein, we report a single-step facile, scalable, low-cost, and high-yield approach to prepare a hybrid material; i.e., MoS2 with graphene (MoS2-G). Due to the space-confined effect, thin-layered MoS2 nanosheets with a loose stacking feature are anchored with the graphene sheets. The semienclosed hybrid architecture of the electrode enhances the integrity and stability during the intercalation of Na+ ions. Particularly, during galvanostatic study the assembled Na-ion cell delivered a specific capacity of 420 mAhg−1 at 50 mAg−1, and 172 mAhg−1 at current density 200 mAg−1 after 200 cycles. The MoS2-G hybrid excels in performance due to residual oxygen groups in graphene, which improves the electronic conductivity and decreases the Na+ diffusion barrier during electrochemical reaction, in comparison with a pristine one.

Mixtures of TiO2·0.2H2O and LiFePO4 as Li-ion Battery Cathode Materials

2012 ◽  
Vol 512-515 ◽  
pp. 1592-1597
Author(s):  
Zi Jian Hong ◽  
Zi Long Tang ◽  
Yu Xing Xu ◽  
Ye Hong ◽  
Ao Tan ◽  
...  
Keyword(s):  
Cathode Material ◽  
Specific Energy ◽  
Low Cost ◽  
Specific Capacity ◽  
Constant Current ◽  
Parallel Model ◽  
High Specific Capacity ◽  
Voltage Plateau ◽  
Rate Property ◽  
Cycle Property

Mixtures of TiO2•0.2H2O (HTO) and LiFePO4 were prepared via three main composite methods: 2-2 series model, 2-2 parallel model and 3-3 model. HTO had been reported to exhibit high specific capacity (~200 mAh/g at 1 C) as well as excellent cycle property, whereas its voltage plateau was too low (about 1.7 V vs. Li) as a cathode material. LiFePO4 was a promising cathode material for its high voltage plateau (about 3.4 V vs. Li), low cost and high specific capacity (~150 mAh/g at 1 C). However, because of its low conductivity, the rate property as well as cycle property was limited. The mixtures of HTO and LiFePO4 were considered to combine the advantages of both materials. By comparison, the 2-2 parallel model excelled in both rate property and cycle property. Its specific capacity can reach as high as 220 mAh/g with a high specific energy of 450 Wh/Kg at 0.1 C. Even after cycled 200 times at 2 C, the capacity can still be higher than 100 mAh/g. CV measurements and a combined constant current and constant voltage tests supported a two plateaus process for 2-2 parallel model. The charge-discharge voltage gap increased for the 2-2 parallel composites, which was supposed to be related to the interface. In general, the specific energy was much higher than HTO while the specific capacity as well as cycle property was much better than LiFePO4 as a cathode material. .

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