Parametric study and optimization of a low-cost paper-based Al-air battery with corrosion inhibition ability

2019 ◽  
Vol 251 ◽  
pp. 113342 ◽  
Author(s):  
Yifei Wang ◽  
Holly Y.H. Kwok ◽  
Wending Pan ◽  
Huimin Zhang ◽  
Xu Lu ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Parametric Study ◽  
Low Cost ◽  
Air Battery ◽  
Inhibition Ability

scholarly journals A low-cost portable cotton-based aluminum-air battery with high specific energy

2019 ◽  
Vol 158 ◽  
pp. 179-185
Author(s):  
Wending Pan ◽  
Yifei Wang ◽  
Holly Y.H. Kwok ◽  
D.Y.C. Leung
Keyword(s):  
Specific Energy ◽  
Low Cost ◽  
Air Battery ◽  
High Specific Energy

scholarly journals Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1161 ◽  
Author(s):  
Jun Xu ◽  
Chan Chen ◽  
Zhifei Han ◽  
Yuanyuan Yang ◽  
Junsheng Li ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Precious Metals ◽  
Perovskite Oxides ◽  
Air Battery ◽  
Energy Conversion Devices ◽  
Further Development ◽  
Electrochemical Oxygen

Electrochemical oxygen reduction and oxygen evolution are two key processes that limit the efficiency of important energy conversion devices such as metal–air battery and electrolysis. Perovskite oxides are receiving discernable attention as potential bifunctional oxygen electrocatalysts to replace precious metals because of their low cost, good activity, and versatility. In this review, we provide a brief summary on the fundamentals of perovskite oxygen electrocatalysts and a detailed discussion on emerging high-performance oxygen electrocatalysts based on perovskite, which include perovskite with a controlled composition, perovskite with high surface area, and perovskite composites. Challenges and outlooks in the further development of perovskite oxygen electrocatalysts are also presented.

scholarly journals A Parametric Study of a Drive by Bridge Inspection System Based on the Morlet Wavelet

2013 ◽  
Vol 569-570 ◽  
pp. 262-269 ◽  
Author(s):  
Patrick J. McGetrick ◽  
Chul Woo Kim
Keyword(s):  
Parametric Study ◽  
Low Cost ◽  
Damage Index ◽  
Morlet Wavelet ◽  
Inspection System ◽  
Vehicle Speed ◽  
Bridge Management ◽  
Damage Level ◽  
Safety Issues ◽  
Morlet Wavelet Transform

Many of the bridges currently in use worldwide are approaching the end of their design lives. However, rehabilitating and extending the lives of these structures raises important safety issues. There is also a need for increased monitoring which has considerable cost implications for bridge management systems. Existing structural health monitoring (SHM) techniques include vibration-based approaches which typically involve direct instrumentation of the bridge and are important as they can indicate the deterioration of the bridge condition. However, they can be labour intensive and expensive. In the past decade, alternative indirect vibration-based approaches which utilise the response of a vehicle passing over a bridge have been developed. This paper investigates such an approach; a low-cost approach for the monitoring of bridge structures which consists of the use of a vehicle fitted with accelerometers on its axles. The approach aims to detect damage in the bridge while obviating the need for direct instrumentation of the bridge. Here, the effectiveness of the approach in detecting damage in a bridge is investigated using a simplified vehicle-bridge interaction (VBI) model in theoretical simulations and a scaled VBI model in a laboratory experiment. In order to identify the existence and location of damage, the vehicle accelerations are recorded and processed using a continuous Morlet wavelet transform and a damage index is established. A parametric study is carried out to investigate the effect of parameters such as the bridge span length, vehicle speed, vehicle mass, damage level and road surface roughness on the accuracy of results.

Highly dispersed Co nanoparticles decorated on a N-doped defective carbon nano-framework for a hybrid Na–air battery

2020 ◽  
Vol 49 (6) ◽  
pp. 1811-1821 ◽  
Author(s):  
Jingyi Zhu ◽  
Tao Qu ◽  
Fengmei Su ◽  
Yuqi Wu ◽  
Yao Kang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Energy Conversion ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Highly Dispersed ◽  
Air Battery ◽  
Co Nanoparticles

Efficient and low-cost bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are of vital importance in energy conversion.

scholarly journals Utilizing solar energy to improve the oxygen evolution reaction kinetics in zinc–air battery

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiaorui Liu ◽  
Yifei Yuan ◽  
Jie Liu ◽  
Bin Liu ◽  
Xu Chen ◽  
...  
Keyword(s):  
Solar Energy ◽  
Low Cost ◽  
Cell Voltage ◽  
Key Factors ◽  
Charge Voltage ◽  
Promotion Strategy ◽  
Charge Potential ◽  
Air Battery ◽  
Low Charge ◽  
Zinc Air Batteries

Abstract Directly harvesting solar energy for battery charging represents an ultimate solution toward low-cost, green, efficient and sustainable electrochemical energy storage. Here, we design a sunlight promotion strategy into rechargeable zinc–air battery with significantly reduced charging potential below the theoretical cell voltage of zinc–air batteries. The sunlight-promoted zinc–air battery using BiVO4 or α-Fe2O3 air photoelectrode achieves a record-low charge potential of ~1.20 and ~1.43 V, respectively, under illumination, which is lowered by ~0.5–0.8 V compared to the typical charge voltage of ~2 V in conventional zinc–air battery. The band structure and photoelectrochemical stability of photoelectrodes are found to be key factors determining the charging performance of sunlight-promoted zinc–air batteries. The introduction of photoelectrode as an air electrode opens a facile way for developing integrated single-unit zinc–air batteries that can efficiently use solar energy to overcome the high charging overpotential of conventional zinc–air batteries.

scholarly journals An Equilateral Arm Inverted U-Slot and Notch Loaded UWB-CPMA with Rendered Ground Plane

2019 ◽  
Vol 9 (2) ◽  
pp. 1595-1600
Keyword(s):  
Loss Tangent ◽  
Parametric Study ◽  
High Frequency ◽  
Low Cost ◽  
Ground Plane ◽  
Ground Surface ◽  
The Other ◽  
Bandwidth Enhancement ◽  
High Frequency Structure Simulator ◽  
X Band

In this paper, a microstrip fed modified circular patch monopole antenna (CPMA) with the rendered ground surface is presented for bandwidth enhancement. In order to extend the bandwidth of a demonstrated antenna, symmetrical slots and equilateral arms inverted U-slot are loaded on the partial ground and patch individually. For additional enhancement in the secured bandwidth, symmetrical notches are truncated from the bottom of the patch. The antenna has a dimension of 30x40x1.6 mm3, which is erected on low cost, FR-4 substrate with relative permittivity , permeability and loss tangent of . The proposed design is analyzed and simulated using high frequency structure simulator (HFSS). The analyzed results are validated through experimented results. The proposed antenna offers a bandwidth of 140.2 % with a maximum radiation efficiency of 94 % over the frequency scope of 2.54 GHz to 14.47 GHz. The crosspolarization levels are also found to be 20-30 dB and 12-23 dB smaller than the co-polarized level for E-plane and H-plane respectively. For better execution and assessment of proposed antenna, a parametric study has been done to analyze the performance of antenna with variations in the length of a partial ground conductor beside the other parameters. The exhibited antenna is suitable for various applications incorporating WiMAX, WLAN, UWB, C-band, X-band and UWB.

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