One‐Pot Synthesis of a Copolymer Micelle Crosslinked Binder with Multiple Lithium‐Ion Diffusion Pathways for Lithium–Sulfur Batteries

ChemSusChem ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 819-826 ◽  
Author(s):  
Rongnan Guo ◽  
Shunlong Zhang ◽  
Jianli Wang ◽  
Hangjun Ying ◽  
Weiqiang Han
Keyword(s):  
Lithium Ion ◽  
Ion Diffusion ◽  
One Pot ◽  
One Pot Synthesis ◽  
Lithium Sulfur Batteries ◽  
Copolymer Micelle ◽  
Lithium Ion Diffusion ◽  
Lithium Sulfur

SiO2@MoS2 core–shell nanocomposite layers with high lithium ion diffusion as a triple polysulfide shield for high performance lithium–sulfur batteries

2019 ◽  
Vol 7 (13) ◽  
pp. 7644-7653 ◽  
Author(s):  
Jingyi Wu ◽  
Na You ◽  
Xiongwei Li ◽  
Hongxia Zeng ◽  
Shuai Li ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
High Performance ◽  
Lithium Ion ◽  
Core Shell ◽  
Ion Diffusion ◽  
Lithium Sulfur Batteries ◽  
Lithium Ion Diffusion ◽  
Lithium Sulfur

The synergistic effect of the SiO2@MoS2 core–shell nanocomposite simultaneously facilitates Li+ diffusion and provides triple confinement of polysulfides.

One-Pot Synthesis of Functionalized Holey Graphene/Sulfur Composite for Lithium-Sulfur Batteries

2017 ◽  
Vol 4 (21) ◽  
pp. 1700783 ◽  
Author(s):  
Ni Chang ◽  
Chungen Zhou ◽  
Hao Fu ◽  
Yan Zhao ◽  
Jianglan Shui
Keyword(s):  
One Pot ◽  
One Pot Synthesis ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Facile one-pot synthesis of well-defined coaxial sulfur/polypyrrole tubular nanocomposites as cathodes for long-cycling lithium–sulfur batteries

Nanoscale ◽  
2018 ◽  
Vol 10 (27) ◽  
pp. 13037-13044 ◽  
Author(s):  
Wenli Wei ◽  
Pengcheng Du ◽  
Dong Liu ◽  
Qi Wang ◽  
Peng Liu
Keyword(s):  
Core Shell ◽  
One Pot ◽  
One Pot Synthesis ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A facile one-pot method was established to fabricate the well-defined core–shell structured coaxial sulfur/polypyrrole tubular nanocomposites as cathodes for long-cycling Li–S batteries.

scholarly journals Expansion-tolerant architectures for stable cycling of ultrahigh-loading sulfur cathodes in lithium-sulfur batteries

2020 ◽  
Vol 6 (1) ◽  
pp. eaay2757 ◽  
Author(s):  
Mahdokht Shaibani ◽  
Meysam Sharifzadeh Mirshekarloo ◽  
Ruhani Singh ◽  
Christopher D. Easton ◽  
M. C. Dilusha Cooray ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Energy Performance ◽  
High Modulus ◽  
Ion Diffusion ◽  
Particle Agglomeration ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Sulfur Electrode ◽  
Lithium Sulfur

Lithium-sulfur batteries can displace lithium-ion by delivering higher specific energy. Presently, however, the superior energy performance fades rapidly when the sulfur electrode is loaded to the required levels—5 to 10 mg cm−2— due to substantial volume change of lithiation/delithiation and the resultant stresses. Inspired by the classical approaches in particle agglomeration theories, we found an approach that places minimum amounts of a high-modulus binder between neighboring particles, leaving increased space for material expansion and ion diffusion. These expansion-tolerant electrodes with loadings up to 15 mg cm−2 yield high gravimetric (>1200 mA·hour g−1) and areal (19 mA·hour cm−2) capacities. The cells are stable for more than 200 cycles, unprecedented in such thick cathodes, with Coulombic efficiency above 99%.

scholarly journals Effective ion pathways and 3D conductive carbon networks in bentonite host enable stable and high-rate lithium–sulfur batteries

2021 ◽  
Vol 10 (1) ◽  
pp. 20-33
Author(s):  
Lian Wu ◽  
Yongqiang Dai ◽  
Wei Zeng ◽  
Jintao Huang ◽  
Bing Liao ◽  
...  
Keyword(s):  
Network Architecture ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Lithium Sulfur Batteries ◽  
Carbon Networks ◽  
Carbon Coated ◽  
Lithium Sulfur ◽  
Initial Capacity

Abstract Fast charge transfer and lithium-ion transport in the electrodes are necessary for high performance Li–S batteries. Herein, a N-doped carbon-coated intercalated-bentonite (Bent@C) with interlamellar ion path and 3D conductive network architecture is designed to improve the performance of Li–S batteries by expediting ion/electron transport in the cathode. The interlamellar ion pathways are constructed through inorganic/organic intercalation of bentonite. The 3D conductive networks consist of N-doped carbon, both in the interlayer and on the surface of the modified bentonite. Benefiting from the unique structure of the Bent@C, the S/Bent@C cathode exhibits a high initial capacity of 1,361 mA h g−1 at 0.2C and achieves a high reversible capacity of 618.1 m Ah g−1 at 2C after 500 cycles with a sulfur loading of 2 mg cm−2. Moreover, with a higher sulfur loading of 3.0 mg cm−2, the cathode still delivers a reversible capacity of 560.2 mA h g−1 at 0.1C after 100 cycles.

Lithium Ion Diffusion Through Glassy Carbon Plate

1997 ◽  
Vol 496 ◽  
Author(s):  
M. Inaba ◽  
S. Nohmi ◽  
A. Funabiki ◽  
T. Abe ◽  
Z. Ogumi
Keyword(s):  
Diffusion Coefficient ◽  
Glassy Carbon ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Irreversible Capacity ◽  
Oxidation Current ◽  
Current Curve ◽  
Carbon Plate ◽  
Lithium Ion Diffusion

ABSTRACTThe electrochemical permeation method was applied to the determination of the diffusion coefficient of Li+ion (DLi+) in a glassy carbon (GC) plate. The cell was composed of two compartments, which were separated by the GC plate. Li+ions were inserted electrochemically from one face, and extracted from the other. The flux of the permeated Li+ions was monitored as an oxidation current at the latter face. The diffusion coefficient was determined by fitting the transient current curve with a theoretical one derived from Fick's law. When the potential was stepped between two potentials in the range of 0 to 0.5 V, transient curves were well fitted with the theoretical one, which gaveDLi+ values on the order of 10−8cm2s−1. In contrast, when the potential was stepped between two potentials across 0.5 V, significant deviation was observed. The deviation indicated the presence of trap sites as well as diffusion sites for Li+ions, the former of which is the origin of the irreversible capacity of GC.

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