3D intra-stacked CoO/carbon nanocomposites welded by Ag nanoparticles for high-capacity, reversible lithium storage

Nanoscale ◽  
2015 ◽  
Vol 7 (23) ◽  
pp. 10368-10376 ◽  
Author(s):  
Changju Chae ◽  
Ki Woong Kim ◽  
Sue Jin Kim ◽  
Daehee Lee ◽  
Yejin Jo ◽  
...  
Keyword(s):  
Current Density ◽  
Ag Nanoparticles ◽  
High Capacity ◽  
Irreversible Capacity ◽  
Lithium Storage ◽  
Carbon Nanocomposites ◽  
Capacity Loss ◽  
A Current

We demonstrate 3D intra-stacked CoO/carbon nanocomposites welded by Ag nanoparticles with a capacity of 770 mA h g−1 at a current density of 2 A g−1, by reducing efficiently the irreversible capacity loss.

A crystalline Cu–Sn–S framework for high-performance lithium storage

2015 ◽  
Vol 3 (38) ◽  
pp. 19410-19416 ◽  
Author(s):  
Lina Nie ◽  
Yu Zhang ◽  
Kaiqi Ye ◽  
Jianyu Han ◽  
Yue Wang ◽  
...  
Keyword(s):  
Current Density ◽  
High Performance ◽  
High Stability ◽  
Three Dimensional ◽  
High Capacity ◽  
Lithium Storage ◽  
A Current

The three-dimensional crystalline (H3O)2(enH2)Cu8Sn3S12 framework exhibits a high capacity of 563 mA h g−1 at a current density of 0.1 A g−1 with high stability.

scholarly journals Nanocrystalline TiO2Electrodes Exhibiting High Storage Capacity and Stability in Rechargeable Lithium Batteries

1995 ◽  
Vol 18 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Sui-Yang Huang ◽  
Ladislav Kavan ◽  
Andreas Kay ◽  
Michael Grätzel ◽  
Ivan Exnar
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Discharge Voltage ◽  
Unit Weight ◽  
Nanocrystalline Films ◽  
Rechargeable Lithium Batteries ◽  
Capacity Loss ◽  
High Storage Capacity ◽  
First Time ◽  
A Current

Nanocrystalline TiO2films were explored for the first time as electrode material for a rechargeable lithium intercalation cell, i.e., Li/LiCF3SO3+ PC/TiO2. Two kinds of nanocrystalline films, TiO2F387 (Degussa) and TiO2colloid-240, were investigated. These films exhibited excellent performance renderings them a promising choice for secondary battery applications. At a current density of 0.01 mA/cm2, two voltage plateaus at 1.78 and 1.89 V were observed for TiO2F387 films during charge and discharge, respectively. The TiO2electrode charge capacity per unit weight rose with decreasing current density. The highest capacity, obtained at a current density of 0.005 mA/cm2and a final discharge voltage of 1.4 V, was 265 mAh/g corresponding to a lithium insertion ratio ofx= 0.8. Nanocrystalline TiO2colloid-240 films showed a similar performance. The cycle life of a TiO2colloid-240 cell at a high current density was found to be excellent; a capacity loss lower than 14% has been observed over 100 charge/discharge cycles.

A high-capacity polyaniline-intercalated layered vanadium oxide for aqueous ammonium-ion battery

2021 ◽  
Author(s):  
Chunhua Han ◽  
Jiao Zhu ◽  
Kai Fu ◽  
Dan Deng ◽  
Wen Luo ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
Current Density ◽  
Electrode Material ◽  
High Capacity ◽  
Interlayer Spacing ◽  
Ammonium Ion ◽  
A Current

A 1.55 nm-interlayer spacing-expanded polyaniline-intercalated vanadium oxide, as a new electrode material for NH4+-ion batteries, exhibits an ever-reported high capacity of ~307 mAh g-1 at a current density of 0.5...

scholarly journals Boron-Doped Carbon Nano-/Microballs from Orthoboric Acid-Starch: Preparation, Characterization, and Lithium Ion Storage Properties

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Xinhua Lu ◽  
Lin Chen
Keyword(s):  
Current Density ◽  
Carbon Nanostructures ◽  
Hydrothermal Reaction ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Boron Doped ◽  
Specific Discharge ◽  
Boron Source ◽  
A Current

A boron-doped carbon nano-/microballs (BC) was successfully obtained via a two-step procedure including hydrothermal reaction (180°C) and carbonization (800°C) with cheap starch and H3BO3 as the carbon and boron source. As a new kind of boron-doped carbon, BC contained 2.03 at% B-content and presented the morphology as almost perfect nano-/microballs with different sizes ranging from 500 nm to 5 μm. Besides that, due to the electron deficient boron, BC was explored as anode material and presented good lithium storage performance. At a current density of 0.2 C, the first reversible specific discharge capacity of BC electrode reached as high as 964.2 mAh g–1 and kept at 699 mAh g–1 till the 11th cycle. BC also exhibited good cycle ability with a specific capacity of 356 mAh g–1 after 79 cycles at a current density of 0.5 C. This work proved to be an effective approach for boron-doped carbon nanostructures which has potential usage for lithium storage material.

Electrode Properties of Defect-Introduced Graphenes for Lithium-Ion Batteries

2013 ◽  
Vol 582 ◽  
pp. 103-106
Author(s):  
Wonk Yun Lee ◽  
Shinya Suzuki ◽  
Masaru Miyayama
Keyword(s):  
Lithium Ion Batteries ◽  
Current Density ◽  
Lithium Ion ◽  
Graphene Sheets ◽  
Oxidizing Agent ◽  
Lithium Storage ◽  
Charge Capacity ◽  
Oxidized Graphite ◽  
A Current ◽  
Graphite Oxides

Electrochemical properties of defect-introduces graphenes for lithium ion batteries were investigated. Graphene sheets (GSs) were prepared from graphite through treating with oxidizing agent followed by rapid thermal exfoliation. Defect concentration was controlled by selecting the number of times of oxidation of graphite. GSs electrodes derived from 1, 2 and 3 times-oxidized graphite oxides exhibited a high charge capacity of 1250, 1790 and 2310 mAh g1, respectively, at the 20th cycle at a current density of 100 mA g1. The enhanced capacity is assumed to be due to additional lithium storage sites such as defects and edges.

POLY(3,4-ETHYLENEDIOXYTHIOPHENE)/MnO2 MESOPOROUS NANOCOMPOSITE WITH EXCELLENT HIGH-RATE ELECTROCHEMICAL PROPERTIES

2011 ◽  
Vol 04 (01) ◽  
pp. 31-36 ◽  
Author(s):  
QING LU ◽  
YIKAI ZHOU
Keyword(s):  
Current Density ◽  
High Rate ◽  
Discharge Process ◽  
Rate Performance ◽  
Synthetic Route ◽  
Lithium Storage ◽  
High Rate Performance ◽  
A Current ◽  
Charge Discharge

Herein, a modified interfacial synthetic route has been demonstrated by synthesizing uniform poly(3,4-ethylenedioxythiophene)/ MnO 2 hierarchical mesoporous nanocomposite. The in-situ generated polymer has been proven to be effective in constraining the overgrowth of nuclei. Consequently, assembled nanosheets with a thickness less than 5 nm have been prepared. At a high rate of 10 A g-1 charge/discharge process, the nanocomposite electrode retains 73.4% of the specific capacitance exhibited at 1 A g-1. At a current density as large as 800 mA g-1, the nanocomposite electrode attains reversible lithium storage specific capacities of 400 mAh g-1 after 50 cycles and 300 mAh g-1 after 100 cycles. The excellent high-rate performance of the nanocomposite electrode is highlighted in terms of its extremely large surface area, unique microstructure and mesoporous features.

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