scholarly journals Effect of Prelithiation Process for Hard Carbon Negative Electrode on the Rate and Cycling Behaviors of Lithium-Ion Batteries

Batteries ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 71 ◽  
Author(s):  
Yusuke Abe ◽  
Tomoaki Saito ◽  
Seiji Kumagai
Keyword(s):  
Lithium Ion Batteries ◽  
Current Density ◽  
High Current Density ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Current ◽  
Hard Carbon ◽  
Li Ion ◽  
Charge Discharge ◽  
Ion Insertion

Two prelithiation processes (shallow Li-ion insertion, and thrice-repeated deep Li-ion insertion and extraction) were applied to the hard carbon (HC) negative electrode (NE) used in lithium-ion batteries (LIBs). LIB full-cells were assembled using Li(Ni0.5Co0.2Mn0.3)O2 positive electrodes (PEs) and the prelithiated HC NEs. The assembled full-cells were charged and discharged under a low current density, increasing current densities in a stepwise manner, and then constant under a high current density. The prelithiation process of shallow Li-ion insertion resulted in the high Coulombic efficiency (CE) of the full-cell at the initial charge-discharge cycles as well as in a superior rate capability. The prelithiation process of thrice-repeated Li-ion insertion and extraction attained an even higher CE and a high charge-discharge specific capacity under a low current density. However, both prelithiation processes decreased the capacity retention during charge-discharge cycling under a high current density, ascertaining a trade-off relationship between the increased CE and the cycling performance. Further elimination of the irreversible capacity of the HC NE was responsible for the higher utilization of both the PE and NE, attaining higher initial performances, but allowing the larger capacity to fade throughout charge-discharge cycling.

High interfacial storage capability of porous NiMn2O4/C hierarchical tremella-like nanostructures as the lithium ion battery anode

Nanoscale ◽  
2015 ◽  
Vol 7 (1) ◽  
pp. 225-231 ◽  
Author(s):  
Wenpei Kang ◽  
Yongbing Tang ◽  
Wenyue Li ◽  
Xia Yang ◽  
Hongtao Xue ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Current Density ◽  
Anode Materials ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Current ◽  
High Specific Capacity ◽  
Battery Anode

NiMn2O4/C hierarchical tremella-like nanostructures are facilely prepared and show an ultra-high specific capacity even at high current density as anode materials of lithium ion batteries.

Fabrication of CoFe2O4 and NiFe2O4 nanoporous spheres as promising anodes for high performance lithium-ion batteries

2017 ◽  
Vol 41 (24) ◽  
pp. 15501-15507 ◽  
Author(s):  
Deming Li ◽  
Guangda Li ◽  
Huaiyun Ge ◽  
Jianhua Zhang ◽  
Xiangeng Meng
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Lithium Ion ◽  
High Current ◽  
Simple Method ◽  
Cycling Life ◽  
Nanoporous Structures

Nanoporous CoFe2O4 and NiFe2O4 spheres have been prepared using a simple method; these nanoporous structures can improve the electrochemical performance of LIBs and exhibit long cycling life at high current density.

Extremely Weak van der Waals Coupling in Vertical ReS2 Nanowalls for High-Current-Density Lithium-Ion Batteries

2016 ◽  
Vol 28 (13) ◽  
pp. 2616-2623 ◽  
Author(s):  
Qin Zhang ◽  
Shuangjie Tan ◽  
Rafael G. Mendes ◽  
Zhongti Sun ◽  
Yongting Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Current Density ◽  
High Current Density ◽  
Van Der Waals ◽  
Lithium Ion ◽  
High Current

On-site evolution of ultrafine ZnO nanoparticles from hollow metal–organic frameworks for advanced lithium ion battery anodes

2017 ◽  
Vol 5 (43) ◽  
pp. 22512-22518 ◽  
Author(s):  
Yiqiong Zhang ◽  
Yanbing Lu ◽  
Shi Feng ◽  
Dongdong Liu ◽  
Zhaoling Ma ◽  
...  
Keyword(s):  
Current Density ◽  
Zno Nanoparticles ◽  
High Current Density ◽  
Metal Organic Frameworks ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
High Current ◽  
Metal Organic ◽  
Hollow Metal

With unique hollow frameworks decorated with well-dispersed ultrafine ZnO nanoparticles, the h-ZIF-8@ZnO hybrids exhibit good cycling performance with a reversible capacity of ∼637.9 mA h g−1 at a high current density of 1.0 A g−1 after 500 cycles.

Graphite-like structure of disordered polynaphthalene hard carbon anode derived from carbonization of perylene-3,4,9,10-tetracarboxylic dianhydride for fast charging lithium-ion batteries

2021 ◽  
Author(s):  
yitao lou ◽  
XianFa Rao ◽  
Jianjun Zhao ◽  
Jun Chen ◽  
Baobao Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Lithium Ion Batteries ◽  
Carbon Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Hard Carbon ◽  
Fast Charging ◽  
Tetracarboxylic Dianhydride ◽  
Charge Discharge

In order to develop novel fast charge/discharge carbon anode materials, an organic hard carbon material (PTCDA-1100) is obtained by calcination of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) at high temperature of 1100 oC....

Electrochemical performances of pyrolytic-cellulose for lithium and sodium ion batteries anode

2020 ◽  
Vol 10 (10) ◽  
pp. 1685-1691
Author(s):  
Lingfang Li ◽  
Dan Chen ◽  
Sichao Su ◽  
Bin Zeng
Keyword(s):  
Current Density ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Impedance ◽  
High Current Density ◽  
Energy Storage Materials ◽  
Electrochemical Performances ◽  
Hard Carbon ◽  
X Ray ◽  
Sodium Storage ◽  
Charge Discharge

At present, due to the depletion of fossil fuels and increasingly serious environmental problems, more and more attention has been paid to the development and application of functional nanostructured materials as renewable energy storage materials. Herein, lithium and sodium storage properties of hard carbons (HC) prepared by pyrolyzing cellulose were investigated. The orderliness and bonding mode of hard carbon were analyzed by X-Ray Diffraction and X-ray Photoelectron Spectroscopy. Electrochemical properties were characterized by Cyclic Voltammetry, electrochemical Impedance Spectroscopy and charge–discharge test. Results showed that the cellulose-derived hard carbon had good lithium and sodium storage performance. The charge–discharge capacity was about 400 mAh/g and 240 mAh/g, respectively, at a current density of 0.2 A/g, and capacity was also stable under high current density of 2 A/g.

High-Rate Charge/Discharge Properties of Li Ion Secondary Battery Using V2O5/Carbon Composite Electrodes with Carbon Fiber

2006 ◽  
Vol 301 ◽  
pp. 159-162
Author(s):  
Akira Kuwahara ◽  
Shinya Suzuki ◽  
Masaru Miyayama
Keyword(s):  
Carbon Fiber ◽  
Current Density ◽  
High Current Density ◽  
Fiber Composite ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
High Rate ◽  
Composite Electrodes ◽  
High Electronic Conductivity ◽  
Charge Discharge

The charge/discharge properties of V2O5/carbon composites with controlled microstructures were investigated to achieve a high-rate lithium electrode performance. Composite electrodes were synthesized by mixing a V2O5 sol, carbon and a surfactant, followed by drying. V2O5/AB (acetylene black) and V2O5/VGCF (vapor-grown carbon fiber) composite electrodes showed high-rate charge/discharge properties only when they had very high carbon contents. V2O5/ (AB and VGCF) composite electrodes with controlled microstructures exhibited a discharge capacity of 245 mA·h·g-1 at a high current density of 40 A·g-1, which was approximately 70% of that at a low current density of 100 mA·g-1. The improvement in the high-rate charge/discharge properties was attributed to the short lithium ion diffusion distance, large reaction area and high electronic conductivity of those composite electrodes.

Preparation of lignite-based activated carbon with high specific capacitance for electrochemical capacitors

2015 ◽  
Vol 08 (04) ◽  
pp. 1550031 ◽  
Author(s):  
Baolin Xing ◽  
Jianliang Cao ◽  
Yan Wang ◽  
Guiyun Yi ◽  
Chuanxiang Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electron Microscope ◽  
Specific Capacitance ◽  
Current Density ◽  
Electrode Materials ◽  
High Current Density ◽  
Electrochemical Capacitors ◽  
High Specific Capacitance ◽  
High Current ◽  
Charge Discharge

A lignite-based activated carbon (LAC) for electrochemical capacitors (ECs) was prepared from high moisture lignite by KOH activation, and the as-prepared sample was characterized by the N 2-sorption, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) techniques. The electrochemical performances of ECs with activated carbon as electrodes in 3 M KOH aqueous solution were evaluated by constant current charge-discharge and cyclic voltammetry. The LAC exhibits a well-developed surface area of 2581 m2/g, a relative wide pore size distribution of 0.5–10 nm. The ECs with LAC as electrode materials presents a high specific capacitance of 392 F/g at a low current density of 50 mA/g, and still remains 315 F/g even at a high current density of 5 A/g. The residual specific capacitance is as high as 92.9% after 2000 cycles. Compared with the commercial activated carbon (Maxsorb: Commercial product, Kansai, Japan), the LAC based electrode materials shows superior capacitive performance in terms of specific capacitance and charge–discharge performance at the high current density.

scholarly journals N-Doped Carbon Boosted the Formation of Few-Layered MoS2 for High-Performance Lithium and Sodium Storage

2021 ◽  
Vol 8 ◽  
Author(s):  
Junfeng Li ◽  
Xianzi Zhou ◽  
Kai Lu ◽  
Chao Ma ◽  
Liang Li ◽  
...  
Keyword(s):  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Low Cost ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Molybdenum Sulfide ◽  
High Current ◽  
High Theoretical Capacity ◽  
Sodium Storage

Molybdenum sulfide (MoS2) has become a potential anode of lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high theoretical capacity and low cost. However, the volume expansion, poor electrical conductivity and dissolution of polysulfides in the electrolyte during the cycling process severely limited its applications. Herein, few-layered MoS2@N-doped carbon (F-MoS2@NC) was synthesized through a facile solvothermal and annealing process. It was found that the addition of N-doped carbon precursor could significantly promote the formation of few-layered MoS2 and improve the performances of lithium and sodium storage. A high reversible capacity of 482.6 mA h g−1 at a high current density of 2000 mA g−1 could be obtained for LIBs. When used as anode material for SIBs, F-MoS2@NC hybrids could maintain a reversible capacity of 171 mA h g−1 at a high current density of 1,000 mA g−1 after 600 cycles. This work should provide new insights into carbon hybrid anode materials for both LIBs and SIBs.

Excellent performance of carbon-coated TiO2/Li4Ti5O12 composites with low Li/Ti ratio for Li-ion storage

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93155-93161 ◽  
Author(s):  
Wei Yang ◽  
Xue Bai ◽  
Tao Li ◽  
Yuan-Yuan Ma ◽  
Yong-Xin Qi ◽  
...  
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Cycling Performance ◽  
High Rate ◽  
High Current ◽  
Excellent Performance ◽  
Ion Storage ◽  
Carbon Coated ◽  
Li Ion

Carbon-coated TiO2/Li4Ti5O12 composites with Li : Ti = 4 : 8 display high rate capacities and excellent long-term cycling performance at high current density.

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