Hierarchical nanotubes constructed from interlayer-expanded MoSe2 nanosheets as a highly durable electrode for sodium storage

2017 ◽  
Vol 5 (47) ◽  
pp. 24859-24866 ◽  
Author(s):  
Junjun Zhang ◽  
Meihui Wu ◽  
Tong Liu ◽  
Wenpei Kang ◽  
Jun Xu
Keyword(s):  
Discharge Capacity ◽  
Current Density ◽  
High Current Density ◽  
Interlayer Spacing ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
High Current ◽  
Long Lifetime ◽  
Sodium Storage

Hierarchical nanotubes consisting of MoSe2 nanosheets with an expanded interlayer spacing of 1.00 nm are synthesized and demonstrated as a highly stable electrode of sodium ion batteries. The MoSe2 nanotube electrode shows a long lifetime of 1500 cycles with a reversible discharge capacity of 228 mA h g−1 at a high current density of 1000 mA g−1.

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.

MoS2nanosheets grown on amorphous carbon nanotubes for enhanced sodium storage

2016 ◽  
Vol 4 (12) ◽  
pp. 4375-4379 ◽  
Author(s):  
Xin Xu ◽  
Demei Yu ◽  
Han Zhou ◽  
Lusi Zhang ◽  
Chunhui Xiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Amorphous Carbon ◽  
Current Density ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Hybrid Nanostructure ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Sodium Storage ◽  
A Current

A unique hybrid nanostructure of MoS2@ACNTs is designed and fabricated as an anode material for sodium-ion batteries. With advantages of its unique constituents and architecture, the MoS2@ACNT electrode is capable of exhibiting a high discharge capacity of 461 mA h g−1even over 150 cycles at a current density of 500 mA g−1.

Triclinic Na2−xFe1+x/2P2O7/C glass-ceramics with high current density performance for sodium ion battery

2013 ◽  
Vol 227 ◽  
pp. 31-34 ◽  
Author(s):  
Tsuyoshi Honma ◽  
Noriko Ito ◽  
Takuya Togashi ◽  
Atsushi Sato ◽  
Takayuki Komatsu
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Glass Ceramics ◽  
Sodium Ion ◽  
Sodium Ion Battery ◽  
High Current

A high‐current density and long lifetime ECR source for oxygen implanters

1990 ◽  
Vol 61 (1) ◽  
pp. 253-255 ◽  
Author(s):  
Y. Torii ◽  
M. Shimada ◽  
I. Watanabe ◽  
J. Hipple ◽  
C. Hayden ◽  
...  
Keyword(s):  
Current Density ◽  
High Current Density ◽  
High Current ◽  
Long Lifetime ◽  
Ecr Source

Carbon nanoflakes as a promising anode for sodium-ion batteries

2018 ◽  
Vol 11 (06) ◽  
pp. 1840011 ◽  
Author(s):  
Xiaocui Zhu ◽  
S. V. Savilov ◽  
Jiangfeng Ni ◽  
Liang Li
Keyword(s):  
Rate Capability ◽  
Interlayer Spacing ◽  
Rechargeable Batteries ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Ordered Structure ◽  
Pseudocapacitive Behavior ◽  
Carbon Nanoflakes ◽  
The Cost ◽  
Sodium Storage

The sharp increase in the cost of lithium resource has driven the research on sodium-ion batteries (SIBs) as sodium shares a similar electrochemical property as lithium. Carbonaceous materials are important anodes for rechargeable batteries, but the prevailing graphite only shows a limited activity towards sodium storage. Herein, we demonstrate that carbon nanoflakes serve as an efficient anode material for SIBs, exhibiting a stable capacity of 148[Formula: see text]mAh[Formula: see text]g[Formula: see text] over 600 continuous cycles at 150[Formula: see text]mA[Formula: see text]g[Formula: see text] and an excellent rate capability of 120[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 1500[Formula: see text]mA[Formula: see text]g[Formula: see text]. More importantly, sodium storage in carbon nanoflakes exhibits a pseudocapacitive behavior, possibly due to their larger interlayer spacing and less-ordered structure vs. crystallized carbon.

Free-Standing NiS2 Electrode as High-Rate Anode Material for Sodium-Ion Batteries

2020 ◽  
Vol 20 (11) ◽  
pp. 7119-7123
Author(s):  
Milan K. Sadan ◽  
Hui Hun Kim ◽  
Changhyeon Kim ◽  
Gyu-Bong Cho ◽  
N. S. Reddy ◽  
...  
Keyword(s):  
Current Density ◽  
Carbon Nanofiber ◽  
High Current Density ◽  
Coulombic Efficiency ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Rate Performance ◽  
Free Standing ◽  
Transfer Resistance

Owing to the speculated price hike and scarcity of lithium resources, sodium-ion batteries are attracting significant research interest these days. However, sodium-ion battery anodes do not deliver good electrochemical performance, particularly rate performance. Herein, we report the facile electrospinning synthesis of a free-standing nickel disulfide (NiS2) embedded on carbon nanofiber. This electrode did not require a conducting agent, current collector, and binder, and typically delivered high capacity and rate performance. The electrode delivered a high initial capacity of 603 mAh g−1 at the current density of 500 mA g−1. Moreover, the electrode delivered the capacity of 271 mAh g−1 at the high current density of 15 A g−1. The excellent rate performance and high coulombic efficiency of the electrode were attributed to its low charge transfer resistance and unique structure.

scholarly journals Synthesis and electrochemical performance of NaV6O15 microflowers for lithium and sodium ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (47) ◽  
pp. 29481-29488 ◽  
Author(s):  
Fang Hu ◽  
Wei Jiang ◽  
Yidi Dong ◽  
Xiaoyong Lai ◽  
Li Xiao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Current Density ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Capacity Retention ◽  
First Discharge Capacity

High first discharge capacity of 255 mA h g−1 (vs. Li+/Li) and 130 mA h g−1 (vs. Na+/Na) were observed in NaV6O15 microflowers and the capacity retention reaches 105% and 64% after 50 cycles at the current density of 100 mA g−1 and 50 mA g−1, respectively.

scholarly journals Microscale Schottky superlubric generator with high direct-current density and ultralong life

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xuanyu Huang ◽  
Xiaojian Xiang ◽  
Jinghui Nie ◽  
Deli Peng ◽  
Fuwei Yang ◽  
...  
Keyword(s):  
Current Density ◽  
Real World ◽  
High Current Density ◽  
Mechanical Energy ◽  
Electrical Current ◽  
High Current ◽  
Current Decay ◽  
Element Simulation ◽  
Real World Applications ◽  
Long Lifetime

AbstractMiniaturized or microscale generators that can effectively convert weak and random mechanical energy into electricity have significant potential to provide solutions for the power supply problem of distributed devices. However, owing to the common occurrence of friction and wear, all such generators developed so far have failed to simultaneously achieve sufficiently high current density and sufficiently long lifetime, which are crucial for real-world applications. To address this issue, we invent a microscale Schottky superlubric generator (S-SLG), such that the sliding contact between microsized graphite flakes and n-type silicon is in a structural superlubric state (an ultra-low friction and wearless state). The S-SLG not only generates high current (~210 Am−2) and power (~7 Wm−2) densities, but also achieves a long lifetime of at least 5,000 cycles, while maintaining stable high electrical current density (~119 Am−2). No current decay and wear are observed during the experiment, indicating that the actual persistence of the S-SLG is enduring or virtually unlimited. By excluding the mechanism of friction-induced excitation in the S-SLG, we further demonstrate an electronic drift process during relative sliding using a quasi-static semiconductor finite element simulation. Our work may guide and accelerate the future use of S-SLGs in real-world applications.

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