High-coulombic-efficiency Si-based hybrid microspheres synthesized by the combination of graphene and IL-derived carbon

2015 ◽  
Vol 3 (42) ◽  
pp. 20935-20943 ◽  
Author(s):  
Sang-Hoon Park ◽  
Dongjoon Ahn ◽  
Young-Min Choi ◽  
Kwang Chul Roh ◽  
Kwang-Bum Kim
Keyword(s):  
Energy Efficiency ◽  
Coulombic Efficiency ◽  
Li Ion Batteries ◽  
Irreversible Capacity ◽  
Full Cell ◽  
Capacity Loss ◽  
Cell Capacity ◽  
Li Ion ◽  
Initial Coulombic Efficiency ◽  
High Coulombic Efficiency

The low initial coulombic efficiency of a Si-based anode can hinder the performance of practical full-cell Li-ion batteries (LIBs), as the irreversible capacity loss of the anode can diminish the reversible full-cell capacity and the energy efficiency.

scholarly journals Direct Pre-lithiation of Electropolymerized Carbon Nanotubes for Enhanced Cycling Performance of Flexible Li-Ion Micro-Batteries

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 406 ◽  
Author(s):  
Vinsensia Ade Sugiawati ◽  
Florence Vacandio ◽  
Neta Yitzhack ◽  
Yair Ein-Eli ◽  
Thierry Djenizian
Keyword(s):  
Carbon Nanotubes ◽  
Coulombic Efficiency ◽  
Cycling Performance ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion ◽  
Initial Coulombic Efficiency ◽  
Charge Discharge

Carbon nanotubes (CNT) are used as anodes for flexible Li-ion micro-batteries. However, one of the major challenges in the growth of flexible micro-batteries with CNT as the anode is their immense capacity loss and a very low initial coulombic efficiency. In this study, we report the use of a facile direct pre-lithiation to suppress high irreversible capacity of the CNT electrodes in the first cycles. Pre-lithiated polymer-coated CNT anodes displayed good rate capabilities, studied up to 30 C and delivered high capacities of 850 mAh g−1 (313 μAh cm−2) at 1 C rate over 50 charge-discharge cycles.

Layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures for high performance Li-ion battery cathodes

2016 ◽  
Vol 4 (47) ◽  
pp. 18416-18425 ◽  
Author(s):  
Fu-Da Yu ◽  
Lan-Fang Que ◽  
Zhen-Bo Wang ◽  
Yin Zhang ◽  
Yuan Xue ◽  
...  
Keyword(s):  
High Performance ◽  
Diffusion Rate ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Cycle Stability ◽  
Ion Diffusion ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion ◽  
Resultant Material

We report an effective approach to fabricate layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures as a cathode material for Li-ion batteries. The resultant material exhibits a reduced first-cycle irreversible capacity loss, rapid Li-ion diffusion rate and excellent cycle stability.

Analysis of the Irreversible Capacity Loss on Carbons for Li-Ion Batteries

1999 ◽  
Author(s):  
W. Jiang ◽  
X. Song ◽  
K. Kinoshita ◽  
T. Tran
Keyword(s):  
Li Ion Batteries ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion

Reactivating Li 2 O with Nano‐Sn to Achieve Ultrahigh Initial Coulombic Efficiency SiO Anodes for Li‐Ion Batteries

ChemSusChem ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 3377-3382 ◽  
Author(s):  
Rusheng Fu ◽  
Yongkang Wu ◽  
Chongzhao Fan ◽  
Zuxin Long ◽  
Guangjie Shao ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Initial Coulombic Efficiency

Synthesis and investigation of layered GeS as a promising large capacity anode with low voltage and high efficiency in full-cell Li-ion batteries

2017 ◽  
Vol 1 (8) ◽  
pp. 1607-1614 ◽  
Author(s):  
Yaqing Wei ◽  
Jun He ◽  
Qing Zhang ◽  
Chang Liu ◽  
Ameng Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Low Voltage ◽  
Coulombic Efficiency ◽  
Cell Voltage ◽  
Li Ion Batteries ◽  
High Cell ◽  
Lithium Storage ◽  
Large Capacity ◽  
Full Cell ◽  
Li Ion

Layered GeS shows a large capacity of 1768 mA h g−1 with a coulombic efficiency of 94% for lithium storage. With good stability and a low voltage in alloying region, the LiCoO2//GeS full cell exhibits both high cell voltage and large capacity.

Irreversible Capacity Loss of Li-Ion Batteries Cycled at Low Temperature Due to an Untypical Layer Hindering Li Diffusion into Graphite Electrode

2017 ◽  
Vol 164 (12) ◽  
pp. A2374-A2389 ◽  
Author(s):  
Bramy Pilipili Matadi ◽  
Sylvie Geniès ◽  
Arnaud Delaille ◽  
Claude Chabrol ◽  
Eric de Vito ◽  
...  
Keyword(s):  
Low Temperature ◽  
Graphite Electrode ◽  
Li Ion Batteries ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion

Electrochemical Performance of SiO/C Composites as Anode Material for Li-Ion Batteries

2015 ◽  
Vol 1092-1093 ◽  
pp. 185-190 ◽  
Author(s):  
Jing Wang ◽  
Mei Juan Zhou ◽  
Feng Wu ◽  
Shi Chen
Keyword(s):  
Discharge Capacity ◽  
Coulombic Efficiency ◽  
Weight Ratio ◽  
Heat Treating ◽  
Li Ion Batteries ◽  
X Ray Diffraction ◽  
Galvanostatic Discharge ◽  
Improved Stability ◽  
Li Ion ◽  
Initial Coulombic Efficiency

Dopamine was used as the carbon precursor to prepare SiO/C composite. Dopamine achieved self-polymerization and covered on the surface of the SiO particles in Tris-buffer, and the SiO/C composites were gained after heat-treating in the tube furnace under Argon. X-ray diffraction ( XRD ) , scanning electron microscope ( SEM ) were used to determine the phases obtained and to observe the morphologies of the composite. The galvanostatic discharge/charge test was carried out to characterize the electrochemical properties of the composite. When the sample of the mixed SiO and dopamine at a weight ratio of 1 : 3, the composite showed the best cycle ability with the discharge capacity of 1362 mAh g−1 in the first cycle, and the initial coulombic efficiency is 55.6%, after 50 cycles, the discharge capacity is 442 mAh g−1. The improved stability of the composite is attributed to carbon-coating forming during heat-treatment process.

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