Electronic Structure Regulation of Layered Vanadium Oxide via Interlayer Doping Strategy toward Superior High‐Rate and Low‐Temperature Zinc‐Ion Batteries

2019 ◽  
Vol 30 (6) ◽  
pp. 1907684 ◽  
Author(s):  
Hongbo Geng ◽  
Min Cheng ◽  
Bo Wang ◽  
Yang Yang ◽  
Yufei Zhang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Low Temperature ◽  
Vanadium Oxide ◽  
Zinc Ion ◽  
High Rate ◽  
Structure Regulation

Tuning the electronic structure of layered vanadium pentoxide by pre-intercalation of potassium ions for superior room/low-temperature aqueous zinc-ion batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Guang Su ◽  
Shufeng Chen ◽  
Huilong Dong ◽  
Yafei Cheng ◽  
Quan Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Low Temperature ◽  
Vanadium Pentoxide ◽  
Zinc Ion ◽  
High Rate ◽  
Potassium Ions ◽  
Diffusion Kinetics

Aqueous zinc-ion batteries (ZIBs), due to sluggish Zn2+ diffusion kinetics, continue to face challenges in terms of achieving superior high rate, long-term cycling and low-temperature properties. Herein, K+ pre-intercalated layered...

Rapid Freezing of Freeze-Etch Specimens

1980 ◽  
Vol 38 ◽  
pp. 752-755
Author(s):  
A. Elgsaeter ◽  
T. Espevik ◽  
G. Kopstad
Keyword(s):  
Low Temperature ◽  
Metal Surface ◽  
Relative Velocity ◽  
Thermal Contact ◽  
High Rate ◽  
Rapid Freezing ◽  
Temperature Decrease ◽  
Freeze Etching

The importance of a high rate of temperature decrease (“rapid freezing”) when freezing specimens for freeze-etching has long been recognized1. The two basic methods for achieving rapid freezing are: 1) dropping the specimen onto a metal surface at low temperature, 2) bringing the specimen instantaneously into thermal contact with a liquid at low temperature and subsequently maintaining a high relative velocity between the liquid and the specimen. Over the last couple of years the first method has received strong renewed interest, particularily as the result of a series of important studies by Heuser and coworkers 2,3. In this paper we will compare these two freezing methods theoretically and experimentally.

ELECTRONIC STRUCTURE, ELECTRON-PHONON INTERACTIONS AND LOW-TEMPERATURE ANOMALIES IN A 15 COMPOUNDS

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-416-C6-417
Author(s):  
B. M. Klein ◽  
L. L. Boyer ◽  
D. A. Papaconstantopoulos
Keyword(s):  
Electronic Structure ◽  
Low Temperature ◽  
Temperature Anomalies

Assembly of Mn3O4 nanoparticles at low temperature on graphene with enhanced electrochemical property for zinc-ion battery

2021 ◽  
Vol 864 ◽  
pp. 158316
Author(s):  
Zhixiong Huang ◽  
Yanjie Duan ◽  
Quanhao Jing ◽  
Mengqi Sun ◽  
Beibei Tang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electrochemical Property ◽  
Zinc Ion ◽  
Mn3o4 Nanoparticles

Low temperature charge carrier hopping transport mechanism in vanadium oxide thin films grown using pulsed dc sputtering

2009 ◽  
Vol 94 (22) ◽  
pp. 222110 ◽  
Author(s):  
S. S. N. Bharadwaja ◽  
C. Venkatasubramanian ◽  
N. Fieldhouse ◽  
S. Ashok ◽  
M. W. Horn ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Charge Carrier ◽  
Vanadium Oxide ◽  
Transport Mechanism ◽  
Oxide Thin Films ◽  
Hopping Transport ◽  
Dc Sputtering ◽  
Pulsed Dc ◽  
Vanadium Oxide Thin Films

scholarly journals Oxygen-Deficient β-MnO2@Graphene Oxide Cathode for High-Rate and Long-Life Aqueous Zinc Ion Batteries

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Shouxiang Ding ◽  
Mingzheng Zhang ◽  
Runzhi Qin ◽  
Jianjun Fang ◽  
Hengyu Ren ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Manganese Oxides ◽  
Rate Capability ◽  
High Energy ◽  
Zinc Ion ◽  
Cycling Stability ◽  
High Rate ◽  
High Energy Density ◽  
Superior Performance ◽  
Long Life

AbstractRecent years have witnessed a booming interest in grid-scale electrochemical energy storage, where much attention has been paid to the aqueous zinc ion batteries (AZIBs). Among various cathode materials for AZIBs, manganese oxides have risen to prominence due to their high energy density and low cost. However, sluggish reaction kinetics and poor cycling stability dictate against their practical application. Herein, we demonstrate the combined use of defect engineering and interfacial optimization that can simultaneously promote rate capability and cycling stability of MnO2 cathodes. β-MnO2 with abundant oxygen vacancies (VO) and graphene oxide (GO) wrapping is synthesized, in which VO in the bulk accelerate the charge/discharge kinetics while GO on the surfaces inhibits the Mn dissolution. This electrode shows a sustained reversible capacity of ~ 129.6 mAh g−1 even after 2000 cycles at a current rate of 4C, outperforming the state-of-the-art MnO2-based cathodes. The superior performance can be rationalized by the direct interaction between surface VO and the GO coating layer, as well as the regulation of structural evolution of β-MnO2 during cycling. The combinatorial design scheme in this work offers a practical pathway for obtaining high-rate and long-life cathodes for AZIBs.

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