Rational design of a 3D MoS2/dual-channel graphene framework hybrid as a free-standing electrode for enhanced lithium storage

2018 ◽  
Vol 6 (28) ◽  
pp. 13797-13805 ◽  
Author(s):  
Wenxu Wang ◽  
Puheng Yang ◽  
Zhixu Jian ◽  
Honglei Li ◽  
Yalan Xing ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electron Transport ◽  
Rational Design ◽  
High Electrical Conductivity ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Free Standing ◽  
Dual Channel ◽  
Li Ion

The unique 3D dual-channel graphene framework could improve electron transport by GF channels possessing high electrical conductivity and facilitate Li ion diffusion by GA channels shortening the diffusion pathways.

STUDYING MULTILAYERED GRAPHENES BY ELECTROPHYSICAL METHODS

2021 ◽  
pp. 100-107
Author(s):  
K. L. Levine ◽  
D. V. Ryabokon ◽  
S. D. Khanin ◽  
R. V. Gelamo ◽  
N. A. Nikonorova
Keyword(s):  
Electrical Conductivity ◽  
Chemical Composition ◽  
Electrical Properties ◽  
Work Function ◽  
Electron Work Function ◽  
Charge Storage ◽  
High Electrical Conductivity ◽  
Free Standing ◽  
Storage Devices

The paper studies multilayer graphenes in the form of free-standing films. The authors provide data about the morphology and electrical properties of films treated with plasma of various chemical composition. It is shown that it is possible to control the electrical properties of the surface and electron work function without significantly affecting its morphology. The obtained samples, combining mechanical flexibility with unreactiveness and high electrical conductivity, are promising for application in flexible charge storage devices.

Significantly improved Li-ion diffusion kinetics and reversibility of Li2O in a MoO2 anode: the effects of oxygen vacancy-induced local charge distribution and metal catalysis on lithium storage

2019 ◽  
Vol 7 (29) ◽  
pp. 17570-17580 ◽  
Author(s):  
Tao Meng ◽  
Jinwen Qin ◽  
Zhen Yang ◽  
Lirong Zheng ◽  
Minhua Cao
Keyword(s):  
Oxygen Vacancy ◽  
Charge Distribution ◽  
Diffusion Kinetics ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Metal Catalysis ◽  
Local Charge ◽  
Li Ion ◽  
Induced Charge

The effects of oxygen vacancy-induced charge distribution and metal catalysis improve the Li-ion diffusion and reversibility of Li2O in MoO2.

Enhanced Li-ion storage performance of novel tube-in-tube structured nanofibers with hollow metal oxide nanospheres covered with a graphitic carbon layer

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8404-8414 ◽  
Author(s):  
Gi Dae Park ◽  
Yun Chan Kang
Keyword(s):  
Electrical Conductivity ◽  
Metal Oxide ◽  
Structural Stability ◽  
Carbon Layer ◽  
Graphitic Carbon ◽  
High Electrical Conductivity ◽  
Storage Performance ◽  
Ion Storage ◽  
Li Ion ◽  
Hollow Metal

In this research, a rational strategy to produce novel tube-in-tube structured nanofibers consisting of hollow CoFe2O4@GC nanospheres is introduced. The pitch solution was applied to provide high electrical conductivity and structural stability.

Additions and Corrections - Poly(1,6-heptadiyane), a Free-Standing Polymer Film Dopable to High Electrical Conductivity

1983 ◽  
Vol 105 (21) ◽  
pp. 6531-6531
Author(s):  
Harry Gibson ◽  
F. Bailey ◽  
Arthur Epstein ◽  
Heiko Rommelmann ◽  
Samuel Kaplan ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Polymer Film ◽  
High Electrical Conductivity ◽  
Free Standing

STRAIN INDUCED ENHANCED MIGRATION OF POLARON AND LITHIUM ION IN λ-MnO2

2012 ◽  
Vol 05 (04) ◽  
pp. 1250037 ◽  
Author(s):  
HUI-JUN YAN ◽  
ZHI-QIANG WANG ◽  
BO XU ◽  
CHUYING OUYANG
Keyword(s):  
Electrical Conductivity ◽  
Diffusion Coefficient ◽  
Dynamic Properties ◽  
Dynamic Performance ◽  
Compressive Strain ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Industrial Preparation ◽  
Lithium Ion Diffusion

The dynamic properties of λ- MnO2 under strain can be different to normal conditions as lithium storage material. Results from first-principles calculations show that compressive strain will enhance the electrical conductivity and lithium ion diffusion coefficient simultaneously. We show that 7% compressive strain applied along the (011) direction leads to about two orders of magnitude increase in both the electrical conductivity and Li diffusion coefficient under room temperature. 7% compressive strain applied along the (111) direction will increase the Li diffusion coefficient by five orders of magnitude. These results are important to experimental and industrial preparation and design of λ- MnO2 materials when interfaces are involved. The physical mechanism behind the strain induced improvement of the dynamic performance is discussed.

scholarly journals Recent Progress of TiO2-Based Anodes for Li Ion Batteries

2016 ◽  
Vol 2016 ◽  
pp. 1-15 ◽  
Author(s):  
Yu Liu ◽  
Yefeng Yang
Keyword(s):  
Energy Storage ◽  
Active Sites ◽  
Recent Progress ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Energy Storage And Conversion ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Storage Mechanism ◽  
Li Ion

TiO2-based materials have been widely studied in the field of photocatalysis, sensors, and solar cells. Besides that, TiO2-based materials are of great interest for energy storage and conversion devices, in particular rechargeable lithium ion batteries (LIBs). TiO2has significant advantage due to its low volume change (<4%) during Li ion insertion/desertions process, short paths for fast lithium ion diffusion, and large exposed surface offering more lithium insertion channels. However, the relatively low theoretical capacity and electrical conductivity of TiO2greatly hampered its practical application. Various strategies have been developed to solve these problems, such as designing different nanostructured TiO2to improve electronic conductivity, coating or combining TiO2with carbonaceous materials, incorporating metal oxides to enhance its capacity, and doping with cationic or anionic dopants to form more open channels and active sites for Li ion transport. This review is devoted to the recent progress in enhancing the LIBs performance of TiO2with various synthetic strategies and architectures control. Based on the lithium storage mechanism, we will also bring forward the existing challenges for future exploitation and development of TiO2-based anodes in energy storage, which would guide the development for rationally and efficiently designing more efficient TiO2-based LIBs anodes.

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