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.

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.

Tailoring natural layered β-phase antimony into few layer antimonene for Li storage with high rate capabilities

2019 ◽  
Vol 7 (7) ◽  
pp. 3238-3243 ◽  
Author(s):  
Yujie Gao ◽  
Weifeng Tian ◽  
Chengxue Huo ◽  
Kan Zhang ◽  
Shiying Guo ◽  
...  
Keyword(s):  
Volume Expansion ◽  
Anode Materials ◽  
Cycling Performance ◽  
High Rate ◽  
Efficient Strategy ◽  
Alloy Anode ◽  
Β Phase ◽  
Ion Storage ◽  
Li Ion ◽  
Li Storage

Downsizing alloy anode materials has been demonstrated as an efficient strategy to alleviate volume expansion and prolong the cycling performance for lithium (Li) ion storage.

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.

An in situ formed Se/CMK-3 composite for rechargeable lithium-ion batteries with long-term cycling performance

2016 ◽  
Vol 4 (35) ◽  
pp. 13646-13651 ◽  
Author(s):  
Cheng Zheng ◽  
Minying Liu ◽  
Wenqiang Chen ◽  
Lingxing Zeng ◽  
Mingdeng Wei
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Rate ◽  
Rate Performance ◽  
Li Ion ◽  
Ion Intercalation ◽  
High Rate Performance

A Se/CMK-3 composite was in situ synthesized, exhibiting large capacity, high rate performance and excellent long-term cycling stability for Li-ion intercalation.

Yolk–shell N-doped carbon coated FeS2nanocages as a high-performance anode for sodium-ion batteries

2019 ◽  
Vol 7 (23) ◽  
pp. 14051-14059 ◽  
Author(s):  
Rui Zang ◽  
Pengxin Li ◽  
Xin Guo ◽  
Zengming Man ◽  
Songtao Zhang ◽  
...  
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Cycling Performance ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Carbon Coated

Rationally designed yolk–shell structured N-doped carbon coated FeS2nanocages demonstrate superior high-rate and long-term cycling performance as anode materials for sodium-ion batteries.

scholarly journals Towards high rate Li metal anodes: enhanced performance at high current density in a superconcentrated ionic liquid

2020 ◽  
Vol 8 (7) ◽  
pp. 3574-3579 ◽  
Author(s):  
Kalani Periyapperuma ◽  
Elisabetta Arca ◽  
Steve Harvey ◽  
Chunmei Ban ◽  
Anthony Burrell ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Current Density ◽  
High Current Density ◽  
High Rate ◽  
High Current ◽  
Fast Charge ◽  
Cycling Efficiency ◽  
P Application ◽  
Metal Anodes

Application of high current density demonstrated enhanced cycling efficiency and the formation of a stable and LiF dominated SEI providing a new path to enable fast charge battery technologies.

scholarly journals Long-Term Electrically Stable Silver Nanowire Composite Transparent Electrode Under High Current Density

2021 ◽  
Author(s):  
Kaiqing Wang ◽  
Yunxia Jin ◽  
Fei Xiao
Keyword(s):  
Current Density ◽  
Composite Electrode ◽  
High Current Density ◽  
Transparent Electrode ◽  
Silver Nanowire ◽  
Electrical Performance ◽  
High Current ◽  
Electrical Stability ◽  
Current Stress

Abstract Silver nanowire (AgNW) network has been employed to many electronic devices as transparent electrode. However, the poor electrical stability under current has been seriously holding its practical application, and we still lack long-term electrically stable AgNW system to study the underlying fundamental of electrical failure. In this work, the electrical performance and failure mechanism of chitosan-ascorbic acid (Chi-AsA)/AgNW composite under current stress were thoroughly studied. The composite electrode maintained stability above 24000 h under high current density of 100 mA cm-1. The main failure in AgNW composite is found to be a wave break perpendicular to the current rather than traditional uniform degradation across AgNW networks. More interestingly, the AgNWs in failed composite electrode kept their original smooth morphology excepting the crack area, while the AgNWs in pristine networks degraded to nanoparticles or became disconnected everywhere. The patterned AgNW composite in microscale exhibits similar long lifetime in resisting current stress as the bulk composite film. The effect of over-coating position, electrical stress, temperature and over-coating materials on the electrical stability were studied. The over-coating layer of Chi-AsA is proven to suppress the silver atoms from migration, reduce the concentrated Joule heating at junctions, and inhibit the corrosion. The Chi-AsA/AgNW composite enables electrically stable transparent conductor for next-generation optoelectronics, and the mechanism investigation may provide effective means of preparing electrically stable AgNW systems.

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