scholarly journals Influence of Powder Milling and Annealing Parameters on the Formation of Cubic Li7La3Zr2O12 Compound

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7633
Author(s):  
Dariusz Oleszak ◽  
Mirosława Pawlyta ◽  
Tomasz Pikula
Keyword(s):  
Lithium Ion ◽  
Ball Mills ◽  
Energy Storage Devices ◽  
Tetragonal Modification ◽  
Storage Devices ◽  
Low Temperature Annealing ◽  
Treatment Conditions ◽  
Manufacturing Procedure ◽  
Li Ion ◽  
Precursor Powders

Li-ion batteries are widely used as energy storage devices due to their excellent electrochemical performance. The cubic Li7La3Zr2O12 (c-LLZO) compound is regarded as a promising candidate as a solid-state electrolyte for lithium-ion batteries due to its high bulk Li-ion conductivity, excellent thermal performance, and chemical stability. The standard manufacturing procedure involves the high-temperature and lengthy annealing of powders. However, the formation of the tetragonal modification of LLZO and other undesired side phases results in the deterioration of electrochemical properties. The mechanical milling of precursor powders can enhance the powders’ reactivity and can result in an easier formation of c-LLZO. The aim of this work was to study the influence of selected milling and annealing parameters on c-LLZO compound formation. The starting powders of La(OH)3, Li2CO3, and ZrO2 were subjected to milling in various ball mills, under different milling conditions. The powders were then annealed at various temperatures for different lengths of times. These studies showed that the phase transformation processes of the powders were not very sensitive to the milling parameters. On the other hand, the final phase composition and microstructure strongly depended on heat treatment conditions. Low temperature annealing (750 °C) for 3 h produced 90% of c-LLZO in the powder structure.

scholarly journals Novel Practical Life Cycle Prediction Method by Entropy Estimation of Li-Ion Battery

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 487
Author(s):  
Tae-Kue Kim ◽  
Sung-Chun Moon
Keyword(s):  
Lithium Ion Batteries ◽  
Prediction Method ◽  
Lithium Ion ◽  
Estimation Accuracy ◽  
Battery Life ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Basic Law ◽  
Life Problems ◽  
Li Ion

The growth of the lithium-ion battery market is accelerating. Although they are widely used in various fields, ranging from mobile devices to large-capacity energy storage devices, stability has always been a problem, which is a critical disadvantage of lithium-ion batteries. If the battery is unstable, which usually occurs at the end of its life, problems such as overheating and overcurrent during charge-discharge increase. In this paper, we propose a method to accurately predict battery life in order to secure battery stability. Unlike the existing methods, we propose a method of assessing the life of a battery by estimating the irreversible energy from the basic law of entropy using voltage, current, and time in a realistic dimension. The life estimation accuracy using the proposed method was at least 91.6%, and the accuracy was higher than 94% when considering the actual used range. The experimental results proved that the proposed method is a practical and effective method for estimating the life of lithium-ion batteries.

Intercalation and delamination of Ti2SnC with high lithium ion storage capacity

Nanoscale ◽  
2021 ◽  
Author(s):  
Haijiang Wu ◽  
Jiale Zhu ◽  
Liang Liu ◽  
Kequan Cao ◽  
Dan Yang ◽  
...  
Keyword(s):  
Storage Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Max Phase ◽  
Metal Carbides ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ion Storage ◽  
Li Ion ◽  
High Energy Storage

Li-ion battery attracts great attentions due to the rapid increasing and urgent demand for high energy storage devices. MAX phase compounds, layered ternary transition metal carbides and/or nitrides, show promise...

Resynthesis of NMC Type Cathode from Spent Lithium-Ion Batteries: A Review

2021 ◽  
Vol 1044 ◽  
pp. 3-14
Author(s):  
Ahmad Jihad ◽  
Affiano Akbar Nur Pratama ◽  
Salsabila Ainun Nisa ◽  
Shofirul Sholikhatun Nisa ◽  
Cornelius Satria Yudha ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Metal Extraction ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Recycling Process ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Military Equipment ◽  
Battery Recycling ◽  
Li Ion

Li-ion batteries are one of the most popular energy storage devices widely applied to various kinds of equipment, such as mobile phones, medical and military equipment, etc. Therefore, due to its numerous advantages, especially on the NMC type, there is a predictable yearly increase in Li-ion batteries' demand. However, even though it is rechargeable, Li-ion batteries also have a usage time limit, thereby increasing the amount of waste disposed of in the environment. Therefore, this study aims to determine the optimum conditions and the potential and challenges from the waste Li-ion battery recycling process, which consists of pretreatment, metal extraction, and product preparation. Data were obtained by studying the literature related to Li-ion battery waste's recycling process, which was then compiled into a review. The results showed that the most optimum recycling process of Li-ion batteries consists of metal extraction by a leaching process that utilizes H2SO4 and H2O2 as leaching and reducing agents, respectively. Furthermore, it was proceeding with the manufacturing of a new Li-ion battery.

Synthesis and Li+ ion Migration Studies of Li6PS5X (X = Cl, Br, I)

2011 ◽  
Vol 1331 ◽  
Author(s):  
R. Prasada Rao ◽  
S. Adams
Keyword(s):  
Lithium Ion ◽  
Temperature Dependent ◽  
Energy Storage Devices ◽  
Ion Migration ◽  
Storage Devices ◽  
Pathway Network ◽  
Annealing Conditions ◽  
Li Ion ◽  
Ion Conducting ◽  
Bond Valence Analysis

ABSTRACTLithium ion conducting argyrodite-type Li6PS5X (X = Cl, Br, I) compounds were prepared using mechanical milling followed by annealing. XRD characterization reveals the formation and growth of Li6PS5X crystals in samples under varying annealing conditions. Temperature dependent XRD data showed the monotonic increase of lattice constant within the range of study. For Li6PS5Cl and Li6PS5Br an ionic conductivity of the order of 10-3 S/cm is reached at room temperature, which is close to the Li mobility in conventional liquid electrolytes and well suitable for all-solid-state safe electrochemical energy storage devices. Bond valence analysis of Li ion migration paths for the argyrodites showed the formation of low energy pathway cages around halide ion for Li6PS5Cl, around the sulfide ion for Li6PS5I. For higher activation energies these cages are interconnected to form a 3-D pathway network. In the case of Li6PS5Br cages around Cl and Br require about the same activation energy.

A new approach for synthesizing bulk-type all-solid-state lithium-ion batteries

2019 ◽  
Vol 7 (16) ◽  
pp. 9748-9760 ◽  
Author(s):  
Linchun He ◽  
Chao Chen ◽  
Masashi Kotobuki ◽  
Feng Zheng ◽  
Henghui Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Energy Storage Devices ◽  
New Approach ◽  
Storage Devices ◽  
Safety Issues ◽  
Li Ion

All-solid-state Li-ion batteries (ASSLiB) have been considered to be the next generation energy storage devices that can overcome safety issues and increase the energy density by replacing the organic electrolyte with inflammable solid electrolyte.

Synthesis and Characterization of Nanowire-Graphene Aerogel for Energy Storage Devices

2012 ◽  
Author(s):  
Mohammad Arif Ishtiaque Shuvo ◽  
Md. Ashiqur Rahaman Khan ◽  
Miguel Mendoza ◽  
Matthew Garcia ◽  
Yirong Lin
Keyword(s):  
Energy Storage ◽  
Surface Area ◽  
Lithium Ion ◽  
Hybrid Structure ◽  
Ion Diffusion ◽  
Graphene Aerogel ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion

The study of graphene has become one of the most exhilarating topics in both academia and industry for being highly promising in various applications. Because of its excellent mechanical, electrical, thermal and nontoxic properties, graphene has shown promising application in energy storage devices such as lithium-ion-battery (LIB), super capacitor and solar cell. In lithium ion battery, graphite is the most commonly used material as anode. However, due to the limited specific surface area of graphite materials, the diffusion of the Li ions in the anode graphite is relatively slow, leading to limited energy storage density. In order to further increase the capacity, nano-structured materials have been extensively studied due to its potential in reducing Li-ion diffusion pathway. To date, one of the most promising approaches to improve the Li-ion diffusion rate is to introduce hybrid nanostructured electrodes that connect the nonconductive high surface area nanowire with nanostructured carbon materials. While there have been several research efforts investigated to fabricate nanowire-graphene hybrids, all the them were focused on randomly distributed nanostructures thus the LIB performance enhancement was limited. Therefore, this paper will introduce a novel hybrid structure with vertically aligned nanowire on graphene aerogel aiming to further increase the performance of LIB. The aligned nanowire array provides a higher specific surface area and could lead to high electrodeelectrolyte contact area and fast lithium ion diffusion rate. While the graphene aerogel structure is electrically conductive and mechanically robust, as well as has low specific density. The developed nanowire/graphene hybrid structure could have the potential to enhance the specific capacity and charge-discharge rate. Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) measurements were used for the initial characterization of this nanowire/graphene aerogel hybrid material system.

scholarly journals Dependence of Li-Ion Battery Energy Density on Separator Thickness

2021 ◽  
Author(s):  
gaolong zhu ◽  
yuyu he ◽  
yunlong deng ◽  
ming wang ◽  
xiaoyan liu ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Rational Design ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion ◽  
Battery Energy

Abstract High energy density lithium-ion batteries are urgently needed due to the rapid growth demands of electric vehicles, electronic devices, and grid energy storage devices. There is still significant opportunity to improve the energy density of existing state-of-the-art lithium-ion batteries by optimizing the separator thickness, which is usually ignored. Here, the dependence of battery gravimetric and volumetric energy densities on separator thickness has been quantitatively discussed in different type Li-ion batteries by calculations combined with experiments. With a decrease in separator thickness, the volumetric energy density is greatly improved. Meanwhile, the gravimetric energy densities are significantly improved as the electrolyte soaking in the separator is reduced. The gravimetric and volumetric energy densities of graphite (Gr) | NCM523 cells enable to increase 11.5% and 29.7%, respectively, by reducing the thickness of separator from 25 μm to 7 μm. Furthermore, the Li | S battery exhibits an extremely high energy density of 664.2 Wh Kg-1 when the thickness of the separator is reduced to 1 μm. This work sheds fresh light on the rational design of high energy density lithium-ion batteries.

scholarly journals A common tattoo chemical for energy storage: henna plant-derived naphthoquinone dimer as a green and sustainable cathode material for Li-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 1576-1582 ◽  
Author(s):  
Mikhail Miroshnikov ◽  
Keiko Kato ◽  
Ganguli Babu ◽  
Kizhmuri P. Divya ◽  
Leela Mohana Reddy Arava ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cathode Material ◽  
Lithium Ion Battery ◽  
Sustainable Energy ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Energy Demands ◽  
Li Ion

The burgeoning energy demands of an increasingly eco-conscious population have spurred the need for sustainable energy storage devices, and have called into question the viability of the popular lithium ion battery.

Quinone/ester-based oxygen functional group-incorporated full carbon Li-ion capacitor for enhanced performance

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3677-3685 ◽  
Author(s):  
Peng Cai ◽  
Kangyu Zou ◽  
Guoqiang Zou ◽  
Hongshuai Hou ◽  
Xiaobo Ji
Keyword(s):  
Energy Storage ◽  
Lithium Ion Batteries ◽  
Functional Group ◽  
Lithium Ion ◽  
Oxygen Functional Group ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion

Lithium ion capacitors (LICs) are regarded as one of the most promising energy storage devices since they can bridge the gap between lithium ion batteries and supercapacitors.

scholarly journals Mexican Onyx Waste as Active Material and Active Material’s Precursor for Conversion Anodes of Lithium Ion Batteries

2021 ◽  
Vol 9 ◽  
Author(s):  
Enrique Quiroga-González ◽  
Emma Morales-Merino
Keyword(s):  
Active Material ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Li Ion Batteries ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion ◽  
Reducing Costs ◽  
First Time ◽  
Better Than

For the first time a limestone has been used as active material or active material’s precursor for electrodes of Li ion batteries. Limestones are very abundant, what is a condition for a sustainable development of energy storage devices. Mexican onyx has been used as a model of limestone in this work, mainly composed of calcite (calcium carbonate). Waste powder of this material from handcraft production was used, reducing costs. The material was carbonized and pyrolyzed, producing calcium oxide covered with carbon. Mexican onyx either treated or untreated works well as anode material for Li ion batteries, storing charges by conversion. Despite the grains of this material were as big as 50 μm, the material with no treatment showed a maximum Li storage capacity of 530.16 mAh/g at C/3.3, while the pyrolyzed one showed a maximum reversible capacity of 220 mAh/g at 1.37C and of 158 mAh/g at 5.48C, performance even better than the performance of graphite.

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