Coralloid Au enables high-performance Zn-CO2 battery and self-driven CO production

2021 ◽  
Author(s):  
Sanshuang Gao ◽  
Mengmeng Jin ◽  
Jiaqiang Sun ◽  
Xijun Liu ◽  
Shusheng Zhang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Current Density ◽  
High Performance ◽  
Co2 Fixation ◽  
High Current Density ◽  
Low Energy ◽  
Co2 Conversion ◽  
High Current ◽  
Key Factors ◽  
Low Energy Consumption

The electrocatalytic CO2 conversion with high current density and low energy consumption are dimerous key factors for practical CO2 fixation. Herein, coralloid Au was prepared via a facile electrodeposition approach,...

Design and Testing of a Micro Bubble-Pumped Heat Pipe

2002 ◽  
Author(s):  
Koji Takahashi ◽  
Kouichiro Yoshino ◽  
Tatsuya Ikuta ◽  
Kunihito Nagayama ◽  
Tanemasa Asano
Keyword(s):  
Energy Consumption ◽  
Thermal Management ◽  
Bubbly Flow ◽  
Heat Removal ◽  
Low Energy ◽  
Removal Mechanism ◽  
Key Factors ◽  
Low Energy Consumption ◽  
Micro Bubble ◽  
Design And Testing

Micro thermal management devices using bubble in microchannel are under development. The heat removal mechanism of this device consists of phase change and forced convection which occur simultaneously and harmonically. Bubble expension in horn-shaped microchannel gives directional purnping by low-energy consumption. Several kinds of chips are built and tested. The uncontrollable phenomena of bubbly flow in microchannels and the key factors for further improvement are discussed.

scholarly journals House owners’ experience and satisfaction with Danish low-energy houses - focus on ventilation

2019 ◽  
Vol 111 ◽  
pp. 04006
Author(s):  
Henrik N. Knudsen
Keyword(s):  
Energy Consumption ◽  
Air Quality ◽  
High Performance ◽  
Indoor Environment ◽  
Ventilation System ◽  
Low Energy ◽  
Energy Class ◽  
Single Family ◽  
Environment Temperature ◽  
Low Energy Consumption

The purpose of this study was to evaluate house owners’ experience and satisfaction with the first Danish detached low-energy single-family houses, built according to energy class 2015 before these supplementary requirements became standard for all new dwellings. A questionnaire survey was carried out among owners of newly built energy class 2015 houses. The paper presents the house owners answers to questions on their overall satisfaction, their heat consumption, and their satisfaction with the indoor environment (temperature, draught, air quality, noise and daylight). There is a focus on issues related to having a mechanical ventilation system, i.e. satisfaction with the air quality, does the air feel dry in winter, and does the ventilation system make noise and how the airing behaviour is in winter. As many as 370 out of 869 house owners, corresponding to a response rate of 43%, answered the questionnaire. There was an overall satisfaction with the new low-energy houses. More than 90% of the house owners perceived the indoor environment as satisfactory. The energy consumption was as low as expected by 59%, while only 7% answered that it was higher than expected. Compared with previous similar studies, problems with technical installations have decreased. However, there is a need for continued focus on the commissioning of new and not necessarily thoroughly tested, high-performance installations and new designs. Based on the survey a series of recommendations are given that might help to achieve both a low energy consumption and satisfied occupants of new low-energy dwellings.

Hydrothermally synthesized graphene and Fe3O4 nanocomposites for high performance capacitive deionization

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 11967-11972 ◽  
Author(s):  
Haibo Li ◽  
Zhi Yi Leong ◽  
Wenhui Shi ◽  
Jun Zhang ◽  
Tupei Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
High Performance ◽  
High Salt ◽  
Low Energy ◽  
Capacitive Deionization ◽  
Low Energy Consumption ◽  
Removal Efficiencies

Capacitive deionization (CDI) devices with low energy consumption and high salt removal efficiencies have attracted much attention.

An extremely low Pt loading cathode for a highly efficient proton exchange membrane water electrolyzer

Nanoscale ◽  
2017 ◽  
Vol 9 (48) ◽  
pp. 19045-19049 ◽  
Author(s):  
Hoyoung Kim ◽  
Seunghoe Choe ◽  
Hyanjoo Park ◽  
Jong Hyun Jang ◽  
Sang Hyun Ahn ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Current Density ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
High Current Density ◽  
Proton Exchange ◽  
The Self ◽  
High Current ◽  
Low Pt Loading ◽  
Exchange Membrane

The self-terminated electrodeposition (SED) of a Pt cathode with enhanced mass transfer demonstrates high performance of PEMWEs at high current density.

scholarly journals N-Doped Carbon Boosted the Formation of Few-Layered MoS2 for High-Performance Lithium and Sodium Storage

2021 ◽  
Vol 8 ◽  
Author(s):  
Junfeng Li ◽  
Xianzi Zhou ◽  
Kai Lu ◽  
Chao Ma ◽  
Liang Li ◽  
...  
Keyword(s):  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Low Cost ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Molybdenum Sulfide ◽  
High Current ◽  
High Theoretical Capacity ◽  
Sodium Storage

Molybdenum sulfide (MoS2) has become a potential anode of lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high theoretical capacity and low cost. However, the volume expansion, poor electrical conductivity and dissolution of polysulfides in the electrolyte during the cycling process severely limited its applications. Herein, few-layered MoS2@N-doped carbon (F-MoS2@NC) was synthesized through a facile solvothermal and annealing process. It was found that the addition of N-doped carbon precursor could significantly promote the formation of few-layered MoS2 and improve the performances of lithium and sodium storage. A high reversible capacity of 482.6 mA h g−1 at a high current density of 2000 mA g−1 could be obtained for LIBs. When used as anode material for SIBs, F-MoS2@NC hybrids could maintain a reversible capacity of 171 mA h g−1 at a high current density of 1,000 mA g−1 after 600 cycles. This work should provide new insights into carbon hybrid anode materials for both LIBs and SIBs.

scholarly journals Hierarchical Porous Carbon Derived from Sichuan Pepper for High-Performance Symmetric Supercapacitor with Decent Rate Capability and Cycling Stability

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 553 ◽  
Author(s):  
Hengshuo Zhang ◽  
Wei Xiao ◽  
Wenjie Zhou ◽  
Shanyong Chen ◽  
Yanhua Zhang
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Rate Capability ◽  
Cycling Stability ◽  
Koh Activation ◽  
High Current ◽  
Symmetric Supercapacitor ◽  
Hierarchical Porous

Hierarchical micro-mesoporous carbon (denoted as HPC-2 in this study) was synthesized by pre-carbonization of biomass Sichuan pepper followed by KOH activation. It possessed well-developed porosity with the specific surface area of 1823.1 m2 g−1 and pore volume of 0.906 cm3 g−1, and exhibited impressive supercapacitive behaviors. For example, the largest specific capacitance of HPC-2 was tested to be ca. 171 F g−1 in a three-electrode setup with outstanding rate capability and stable electrochemical property, whose capacitance retention was near 100% after cycling at rather a high current density of 40 A g−1 for up to 10,000 cycles. Furthermore, a two-electrode symmetric supercapacitor cell of HPC-2//HPC-2 was constructed, which delivered the maximum specific capacitance and energy density of ca. 30 F g−1 and 4.2 Wh kg−1, respectively, had prominent rate performance and cycling stability with negligible capacitance decay after repetitive charge/discharge at a high current density of 10 A g−1 for over 10,000 cycles. Such electrochemical properties of HPC-2 in both three- and two-electrode systems are superior or comparable to those of a great number of porous biomass carbon reported previously, hence making it a promising candidate for the development of high-performance energy storage devices.

High performance polarization-sensitive self-powered imaging photodetectors based on a p-Te/n-MoSe2 van der Waals heterojunction with strong interlayer transition

2021 ◽  
Author(s):  
Qixiao Zhao ◽  
Feng Gao ◽  
Hongyu Chen ◽  
Wei Gao ◽  
Mengjia Xia ◽  
...  
Keyword(s):  
Energy Consumption ◽  
High Performance ◽  
Imaging System ◽  
Van Der Waals ◽  
Low Energy ◽  
Low Energy Consumption ◽  
Comprehensive Performance ◽  
Self Powered

A p-Te/n-MoSe2 vdWH polarization-sensitive photodetector with high comprehensive performance is proposed, which would provide an opportunity for constructing a compact monolithic polarization-sensitive imaging system with low energy consumption.

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