Self-assembling RuO2 nanogranulates with few carbon layers as an interconnected nanoporous structure for lithium–oxygen batteries

2020 ◽  
Vol 56 (53) ◽  
pp. 7253-7256
Author(s):  
Wei-Hong Lai ◽  
Zhi Zheng ◽  
Wanlin Wang ◽  
Lei Wang ◽  
Yao-Jie Lei ◽  
...  
Keyword(s):  
High Performance ◽  
High Stability ◽  
Nanoporous Structure ◽  
Self Assembling ◽  
Lithium Oxygen Batteries

Interconnected nanoporous RuO2 nanogranulates coated with a few layers of carbon enable high-performance Li–O2 batteries with high stability.

Revealing the role of dopants in mitigating degradation phenomena in sodium-ion layered cathodes

2021 ◽  
Vol 23 (3) ◽  
pp. 2038-2045
Author(s):  
Kyoungmin Min ◽  
Young-Han Shin
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
High Stability ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Layered Cathode Materials ◽  
Layered Cathodes

Prevention of the degradation of sodium-based layered cathode materials is the key to developing high-performance and high-stability sodium-ion batteries.

Bioinspired Interfacial Engineering of CoSe2 Decorated Carbon Framework Cathode towards Temperature-Tolerant and Flexible Zn-Air Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Wenxian Liu ◽  
Dong Zheng ◽  
Lin Zhang ◽  
Ruilian Yin ◽  
Xilian Xu ◽  
...  
Keyword(s):  
Fast Electron ◽  
High Performance ◽  
High Stability ◽  
Wearable Devices ◽  
Air Electrode ◽  
Interfacial Engineering ◽  
Electrolyte Interface ◽  
Carbon Framework ◽  
Ion Transportation

High-performance air electrode is essential for the successful application of flexible Zn-air batteries in wearable devices. However, endowing the electrode-electrolyte interface with high stability and fast electron/ion transportation is still...

Accelerating ion diffusion with unique three-dimensionally interconnected nanopores for self-membrane high-performance pseudocapacitors

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18311-18317 ◽  
Author(s):  
Yuan Gao ◽  
Yuanjing Lin ◽  
Zehua Peng ◽  
Qingfeng Zhou ◽  
Zhiyong Fan
Keyword(s):  
Aspect Ratio ◽  
Surface Area ◽  
Structural Stability ◽  
High Aspect Ratio ◽  
High Performance ◽  
Three Dimensional ◽  
Rate Capability ◽  
Large Surface Area ◽  
Nanoporous Structure ◽  
Ion Diffusion

Three-dimensional interconnected nanoporous structure (3-D INPOS) possesses high aspect ratio, large surface area, as well as good structural stability. Profiting from its unique interconnected architecture, the 3-D INPOS pseudocapacitor achieves a largely enhanced capacitance and rate capability.

scholarly journals Ultrafast-charging and long cycle-life anode materials of TiO2-bronze/nitrogen-doped graphene nanocomposites for high-performance lithium-ion batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43811-43824
Author(s):  
Thanapat Autthawong ◽  
Yothin Chimupala ◽  
Mitsutaka Haruta ◽  
Hiroki Kurata ◽  
Tsutomu Kiyomura ◽  
...  
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
High Stability ◽  
Lithium Ion ◽  
Graphene Nanocomposites ◽  
Nitrogen Doped ◽  
Long Cycle Life ◽  
Fast Charging ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

The TiO2-bronze/nitrogen-doped graphene nanocomposites have the potential for fast-charging and have high stability, showing potential as an anode material in advanced power batteries for next-generation applications.

scholarly journals Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries †

Inorganics ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 69 ◽  
Author(s):  
Yichao Cai ◽  
Yunpeng Hou ◽  
Yong Lu ◽  
Jun Chen
Keyword(s):  
High Performance ◽  
Noble Metals ◽  
Catalytic Mechanism ◽  
Low Cost ◽  
Rate Capability ◽  
Positive Electrode ◽  
Safety Hazards ◽  
Environmental Friendliness ◽  
Potential Safety ◽  
Lithium Oxygen Batteries

Rechargeable aprotic lithium-oxygen (Li-O2) batteries have attracted significant interest in recent years owing to their ultrahigh theoretical capacity, low cost, and environmental friendliness. However, the further development of Li-O2 batteries is hindered by some ineluctable issues, such as severe parasitic reactions, low energy efficiency, poor rate capability, short cycling life and potential safety hazards, which mainly stem from the high charging overpotential in the positive electrode side. Thus, it is of great significance to develop high-performance catalysts for the positive electrode in order to address these issues and to boost the commercialization of Li-O2 batteries. In this review, three main categories of catalyst for the positive electrode of Li-O2 batteries, including carbon materials, noble metals and their oxides, and transition metals and their oxides, are systematically summarized and discussed. We not only focus on the electrochemical performance of batteries, but also pay more attention to understanding the catalytic mechanism of these catalysts for the positive electrode. In closing, opportunities for the design of better catalysts for the positive electrode of high-performance Li-O2 batteries are discussed.

scholarly journals Mixed Metal-Antimony Oxide Nanocomposites: Low pH Water Oxidation Electrocatalysts with Outstanding Durability at Ambient and Elevated Temperatures

2021 ◽  
Author(s):  
Luke Sibimol ◽  
Manjunath Chatti ◽  
Asha Yadav ◽  
Brittany Kerr ◽  
Jiban Kangsabanik ◽  
...  
Keyword(s):  
Water Oxidation ◽  
High Performance ◽  
Density Functional ◽  
High Stability ◽  
Proton Exchange Membrane ◽  
Elevated Temperatures ◽  
Antimony Oxide ◽  
Proton Exchange ◽  
Efficient Production ◽  
Ambient Conditions

Proton-exchange membrane water electrolysers provide many advantages for the energy-efficient production of H<sub>2</sub>, but the current technology relies on high loadings of expensive iridium at the anodes, which are often unstable in operation. To address this, the present work scrutinises the properties of antimony-metal (Co, Mn, Ni, Fe, Ru) oxides synthesised as flat thin films by a solution-based method for the oxygen evolution reaction in 0.5 M H<sub>2</sub>SO<sub>4</sub>. Among the non-noble-metal catalysts, only cobalt-antimony and manganese-antimony oxides demonstrate high stability and reasonable activity under ambient conditions, but slowly lose activity at elevated temperatures. The ruthenium-antimony system is highly active, requiring an overpotential of 0.39 ± 0.03 and 0.34 ± 0.01 V to achieve 10 mA cm<sup>-2</sup> at 24 ± 2 and 80 °C, respectively, and remaining remarkably stable during one-week tests at 80 °C. The <i>S</i>-number for this catalyst is higher than that for the high-performance benchmark Ir-based systems. Density functional theory analysis and physical characterisation reveal that this high stability is supported by the enhanced hybridisation of the oxygen p- and metal d-orbitals induced by antimony, and can arise from two distinct structural scenarios: either formation of an antimonate phase, or nanoscale intermixing of metal and antimony oxide crystallites.

MnO2 nanoflowers grown on a polypropylene separator for use as both a barrier and an accelerator of polysulfides for high-performance Li–S batteries

2020 ◽  
Vol 49 (28) ◽  
pp. 9719-9727 ◽  
Author(s):  
Yinze Zuo ◽  
Tao Yan ◽  
Yuejin Zhu ◽  
Jian Zhou ◽  
Weiming Su ◽  
...  
Keyword(s):  
High Performance ◽  
High Stability ◽  
Lithium Sulfur Batteries ◽  
Polypropylene Separator ◽  
Lithium Sulfur

The separator modification has been considered to be the most effective approach to obtain high-stability lithium–sulfur batteries (LSBs).

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