Rate Capability Fade of 18650 Li-Ion Cells

2008 ◽  
Vol 368-372 ◽  
pp. 290-292
Author(s):  
Fang Lian ◽  
Yan Li ◽  
Yang Hu ◽  
Sheng Wen Zhong ◽  
Li Hua Xu ◽  
...  
Keyword(s):  
High Current Density ◽  
Discharge Rate ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cubic Crystal ◽  
Lithium Ion Cells ◽  
Positive Electrode Material ◽  
Anode Electrode ◽  
Li Ion

The rate capability of 18650 lithium-ion cells was studied in the paper. The experimental results showed that the reversible capacity declined to 89.5, 85.8 and 81.2% of the initial capacity after 300 cycles at discharge rate of 0.5, 1 and 2C, respectively. The XRD and SAED analysis indicated that at a high current density partial positive electrode material LiCoO2 transformed gradually from well-layered structure to rock salt cubic crystal. Upon the cycling, the degradation of cathode materials’ structure and much thicker negative film on anode electrode surface contributed to the rate capability fade.

scholarly journals Complexing Agents on Carbon Content and Lithium Storage Capacity of LiFePO4/C Cathode Synthesized via Sol-Gel Approach

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
C. Guan ◽  
H. Huang
Keyword(s):  
Discharge Rate ◽  
Sol Gel ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cost Effective ◽  
Reversible Capacity ◽  
Complexing Agents ◽  
Lithium Storage ◽  
Synthesis Conditions

Olivine-structured LiFePO4faces its intrinsic challenges in terms of poor electrical conductivity and lithium-ion diffusion capability for application to lithium-ion batteries. Cost-effective sol-gel approach is advantageous to in situ synthesize carbon-coated LiFePO4(LiFePO4/C) which can not only improve electronic conductivity but also constrain particle size to nanometer scale. In this study, the key parameter is focused on the choice and amount of chelating agents in this synthesis route. It was found that stability of complexing compounds has significant impacts on the carbon contents and electrochemical properties of the products. At the favorable choice of precursors, composition, and synthesis conditions, nanocrystalline LiFePO4/C materials with appropriate amount of carbon coating were successfully obtained. A reversible capacity of 162 mAh/g was achieved at 0.2Crate, in addition to good discharge rate capability.

ULTRATHIN Li4Ti5O12 NANOSHEETS AS A HIGH PERFORMANCE ANODE FOR Li-ION BATTERY

2011 ◽  
Vol 04 (04) ◽  
pp. 389-393 ◽  
Author(s):  
ZHENSHENG HONG ◽  
TONGBIN LAN ◽  
FUYU XIAO ◽  
HUIXING ZHANG ◽  
MINGDENG WEI
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Discharge Rate ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Voltage Range ◽  
Titanate Nanowires ◽  
Li Ion ◽  
First Time ◽  
A Current

Ultrathin Li 4 Ti 5 O 12 (LTO) nanosheets were successfully synthesized for the first time using the ultrathin titanate nanowires as a precursor. The synthesized Li 4 Ti 5 O 12 nanosheets have a large surface area of 159.2m2g-1 and their thickness was found to be ca. 5–7 nm. These nanosheets were highly crystalline and used as anode materials in rechargeable lithium-ion batteries. A stable capacity of 150 mAhg-1 for LTO nanosheets can be retained after 70 cycles at a current density of 1 Ag-1 in the voltage window of 2.5–1.0 V. It is notable that a large capacity of 267.5 mAhg-1 was obtained at the second discharge and 166 mAhg-1 can be retained after 70 cycles at 1 Ag-1 in the voltage range of 2.5–0.02 V. These results indicate that the anode materials made of spinel LTO nanosheets displayed a large reversible capacity at a high charge/discharge rate.

scholarly journals Hybrid Structures of Sisal Fiber Derived Interconnected Carbon Nanosheets/MoS2/Polyaniline as Advanced Electrode Materials in Lithium-Ion Batteries

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3710
Author(s):  
Wei Li ◽  
Yuanzhou Liu ◽  
Shuang Zheng ◽  
Guobin Hu ◽  
Kaiyou Zhang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Volume Change ◽  
Electrode Materials ◽  
High Current Density ◽  
Oxidative Polymerization ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Sisal Fiber ◽  
Pani Film

In this work, we designed and successfully synthesized an interconnected carbon nanosheet/MoS2/polyaniline hybrid (ICN/MoS2/PANI) by combining the hydrothermal method and in situ chemical oxidative polymerization. The as-synthesized ICNs/MoS2/PANI hybrid showed a “caramel treat-like” architecture in which the sisal fiber derived ICNs were used as hosts to grow “follower-like” MoS2 nanostructures, and the PANI film was controllably grown on the surface of ICNs and MoS2. As a LIBs anode material, the ICN/MoS2/PANI electrode possesses excellent cycling performance, superior rate capability, and high reversible capacity. The reversible capacity retains 583 mA h/g after 400 cycles at a high current density of 2 A/g. The standout electrochemical performance of the ICN/MoS2/PANI electrode can be attributed to the synergistic effects of ICNs, MoS2 nanostructures, and PANI. The ICN framework can buffer the volume change of MoS2, facilitate electron transfer, and supply more lithium inset sites. The MoS2 nanostructures provide superior rate capability and reversible capacity, and the PANI coating can further buffer the volume change and facilitate electron transfer.

scholarly journals Increasing the Discharge Rate Capability of Lithium-Ion Cells with Laser-Structured Graphite Anodes: Modeling and Simulation

2018 ◽  
Vol 165 (7) ◽  
pp. A1563-A1573 ◽  
Author(s):  
Jan B. Habedank ◽  
Ludwig Kraft ◽  
Alexander Rheinfeld ◽  
Christina Krezdorn ◽  
Andreas Jossen ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Discharge Rate ◽  
Rate Capability ◽  
Lithium Ion ◽  
Lithium Ion Cells ◽  
Graphite Anodes

scholarly journals High-rate amorphous SnO2 nanomembrane anodes for Li-ion batteries with a long cycling life

Nanoscale ◽  
2015 ◽  
Vol 7 (1) ◽  
pp. 282-288 ◽  
Author(s):  
Xianghong Liu ◽  
Jun Zhang ◽  
Wenping Si ◽  
Lixia Xi ◽  
Steffen Oswald ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Li Ion Batteries ◽  
High Rate Capability ◽  
High Reversible Capacity ◽  
Li Ion ◽  
Cycling Life

Amorphous SnO2 nanomembrane anodes demonstrate a high reversible capacity (854 mA h g−1) after 1000 cycles and high rate capability (40 A g−1) for lithium-ion batteries.

Zn0.5Co0.5O Solid Solution Nanoparticles with Durable Life for Rechargeable Lithium-ion Batteries

Nano LIFE ◽  
2014 ◽  
Vol 04 (04) ◽  
pp. 1441015 ◽  
Author(s):  
Linlin Wang ◽  
Daoli Zhao ◽  
Min Zhang ◽  
Caihua Wang ◽  
Kaibin Tang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Particle Size ◽  
Energy Storage ◽  
Average Particle Size ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Average Particle ◽  
Li Ion Batteries ◽  
Li Ion

Zn 0.5 Co 0.5 O solid solution materials have been extensively studied for possible spintronic applications, however, there are only a few reports using Zn 0.5 Co 0.5 O nanostructures for energy storage. Here, we report the preparation of Zn 0.5 Co 0.5 O nanoparticles with the average particle size 10 nm and their application as anode material for rechargeable Li -ion batteries (LIBs). Electrochemical measurements demonstrate that the Zn 0.5 Co 0.5 O solid solution nanoparticles deliver a stable reversible capacity of 309 mA h g-1 up to 250 cycles at 1 C rate. These results show higher-rate capability and better cycle durability compared with those of the reported ZnO or ZnO -based anodes.

scholarly journals Effect of Nitrogen Doping on the Performance of Mesoporous CMK-8 Carbon Anodes for Li-Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4998
Author(s):  
G. Calcagno ◽  
M. Agostini ◽  
S. Xiong ◽  
A. Matic ◽  
A. E. C. Palmqvist ◽  
...  
Keyword(s):  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Mesoporous Carbons ◽  
Channel Network ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous ◽  
N Doping ◽  
Li Ion ◽  
Nitrogen Functionalization

Designing carbonaceous materials with heightened attention to the structural properties such as porosity, and to the functionalization of the surface, is a growing topic in the lithium-ion batteries (LIBs) field. Using a mesoporous silica KIT-6 hard template, mesoporous carbons belonging to the OMCs (ordered mesoporous carbons) family, namely 3D cubic CMK-8 and N-CMK-8 were synthesized and thoroughly structurally characterized. XPS analysis confirmed the successful introduction of nitrogen, highlighting the nature of the different nitrogen atoms incorporated in the structure. The work aims at evaluating the electrochemical performance of N-doped ordered mesoporous carbons as an anode in LIBs, underlining the effect of the nitrogen functionalization. The N-CMK-8 electrode reveals higher reversible capacity, better cycling stability, and rate capability, as compared to the CMK-8 electrode. Coupling the 3D channel network with the functional N-doping increased the reversible capacity to ~1000 mAh·g−1 for the N-CMK-8 from ~450 mAh·g−1 for the undoped CMK-8 electrode. A full Li-ion cell was built using N-CMK-8 as an anode, commercial LiFePO4, a cathode, and LP30 commercial electrolyte, showing stable performance for 100 cycles. The combination of nitrogen functionalization and ordered porosity is promising for the development of high performing functional anodes.

Hierarchical NiFe2O4/Fe2O3 nanotubes derived from metal organic frameworks for superior lithium ion battery anodes

2014 ◽  
Vol 2 (21) ◽  
pp. 8048-8053 ◽  
Author(s):  
Gang Huang ◽  
Feifei Zhang ◽  
Leilei Zhang ◽  
Xinchuan Du ◽  
Jianwei Wang ◽  
...  
Keyword(s):  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Li Ion Batteries ◽  
Templated Synthesis ◽  
The Core ◽  
Metal Organic ◽  
Li Ion ◽  
Fe2o3 Nanotubes

The core–shell MOF templated synthesis of porous NiFe2O4@Fe2O3 nanotubes that exhibit a large reversible capacity, excellent cycling stability and superior rate capability as anode materials for Li-ion batteries.

Graphene wrapped 3,4,9,10-perylenetetracarboxylic dianhydride as a high-performance organic cathode for lithium ion batteries

2016 ◽  
Vol 4 (23) ◽  
pp. 9177-9183 ◽  
Author(s):  
Dongming Cui ◽  
Di Tian ◽  
Shasha Chen ◽  
Liangjie Yuan
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
High Reversible Capacity ◽  
Li Ion ◽  
Excellent Cycling Stability

Graphene wrapped 3,4,9,10-perylenetetracarboxylic dianhydride shows a high reversible capacity, an excellent cycling stability and a superior rate capability for Li-ion batteries.

scholarly journals The Necessity of Recycling of Waste Li-Ion Batteries Used in Electric Vehicles as Objects Posing a Threat to Human Health and the Environment

Recycling ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 35
Author(s):  
Agnieszka Sobianowska-Turek ◽  
Weronika Urbańska ◽  
Anna Janicka ◽  
Maciej Zawiślak ◽  
Jędrzej Matla
Keyword(s):  
Automotive Industry ◽  
Morphological Characteristics ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Customer Expectations ◽  
Lithium Ion Cells ◽  
Improper Use ◽  
Complex Chemical Composition ◽  
Li Ion ◽  
Legal Restrictions

The automotive industry is one of the fastest-growing sectors of the modern economy. Growing customer expectations, implementing solutions related to electromobility, and increasingly stringent legal restrictions in the field of environmental protection, determine the development and introduction of innovative technologies in the field of car production. To power the most modern vehicles that include electric and hybrid cars, packages of various types of lithium-ion cells are used, the number of which is constantly growing. After use, these batteries, due to their complex chemical composition, constitute hazardous waste that is difficult to manage and must be recycled in modern technological lines. The article presents the morphological characteristics of the currently used types of Li-ion cells, and the threats to the safety of people and the environment that may occur in the event of improper use of Li-ion batteries and accumulators have been identified and described on the basis of the Regulation of the European Parliament and Council (EC) No. 1272/2008 of 16 December 2008 and No. 1907/2006 of 18 December 2006 on the classification, labeling and packaging of substances and mixtures and the registration, evaluation, authorization and restriction of chemicals (REACH), establishing the European Chemicals Agency.

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