sp-hybridized nitrogen doped graphdiyne for high-performance Zn-air batteries

2021 ◽  
Author(s):  
Yasong Zhao ◽  
Jiawei Wan ◽  
Nailiang Yang ◽  
Ranbo Yu ◽  
Dan Wang
Keyword(s):  
Specific Energy ◽  
High Performance ◽  
Light Weight ◽  
Practical Application ◽  
Environmental Friendliness ◽  
Nitrogen Doped ◽  
High Specific Energy

Zn-air batteries have drawn extensive attention owning to high specific energy, light weight, convenient operation, and environmental friendliness. However, practical application remains a challenge due to unsatisfied performance and high-cost....

Nitrogen doped porous carbon fiber/vertical graphene as efficient polysulfide conversion catalyst for high performance lithium sulfur batteries

2021 ◽  
Author(s):  
junsheng lin ◽  
Yangcheng Mo ◽  
Shiwen Li ◽  
Jie Yu
Keyword(s):  
High Performance ◽  
Practical Application ◽  
Nitrogen Doped ◽  
High Sulfur Content ◽  
Slow Kinetics ◽  
Lithium Sulfur Batteries ◽  
Conversion Catalyst ◽  
Kinetics Of ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Under high sulfur loading, high sulfur content and low electrolyte/sulfur ratio (E/S), the practical application of lithium sulfur (Li–S) batteries is seriously limited by the negative and slow kinetics of...

CuCo2O4 nanoparticles wrapped in a rGO aerogel composite as an anode for a fast and stable Li-ion capacitor with ultra-high specific energy

2021 ◽  
Author(s):  
Muhammad Sajjad ◽  
Muhammad Sufyan Javed ◽  
Muhammad Imran ◽  
Zhiyu Mao
Keyword(s):  
Specific Energy ◽  
Specific Power ◽  
Practical Application ◽  
Aerogel Composite ◽  
Li Ion ◽  
High Specific Energy ◽  
Application Requirements

To meet practical application requirements, high specific energy and specific power and excellent cyclability are highly desired.

scholarly journals Application of Emerging Cell Disintegration Techniques for the Accelerated Recovery of Curcuminoids from Curcuma longa

2021 ◽  
Vol 11 (17) ◽  
pp. 8238
Author(s):  
Hoang Le-Tan ◽  
Thomas Fauster ◽  
Jelena Vladic ◽  
Tina Gerhardt ◽  
Klara Haas ◽  
...  
Keyword(s):  
Specific Energy ◽  
High Performance ◽  
Energy Input ◽  
Curcuma Longa ◽  
Time Saving ◽  
Specific Energy Input ◽  
Beneficial Effects ◽  
High Specific Energy ◽  
The Impact ◽  
Cell Disintegration

Curcuminoids, the bioactive compounds with many beneficial effects on human health, exist in Curcuma longa (turmeric). In the present study, the impact of different cell disintegration techniques to enhance total curcuminoid recovery (TC) from fresh and dried turmeric was investigated. The impact of thermal pretreatment (TP), ultrasound pretreatment (UP), enzyme pretreatment (EP), and pulsed electric field pretreatment (PEF) on the recovery of curcumin (CUR), demethoxycurcumin (DMC), and bis-demethoxycurcumin (BDMC) from fresh and dried turmeric were studied. The cell disintegration index (Zp) and high-performance liquid chromatography (HPLC) analysis of curcuminoids were performed to evaluate the efficiency of the applied techniques. With fresh turmeric, the highest curcuminoid recovery was 83.6 mg/g dry basis with EP. The highest structural tissue damage was obtained with UP achieving a cell disintegration level of 92.5%. The technology with the highest time-saving and low specific energy input was PEF with a total curcuminoid recovery of 80.9 mg/g dry basis. Working with dried turmeric, the drying required high specific energy input for 72 h at 50 °C; however, the untreated dried sample reached 125.3 mg/g dry basis of TC without further pretreatment after drying.

High-performance all solid-state micro-supercapacitor based on patterned photoresist-derived porous carbon electrodes and an ionogel electrolyte

2014 ◽  
Vol 2 (21) ◽  
pp. 7997-8002 ◽  
Author(s):  
Shuang Wang ◽  
Ben Hsia ◽  
Carlo Carraro ◽  
Roya Maboudian
Keyword(s):  
Solid State ◽  
Specific Energy ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Electrodes ◽  
Term Stability ◽  
Long Term Stability ◽  
Porous Carbon Electrodes ◽  
High Specific Energy

An all solid-state micro-supercapacitor is fabricated using patterned photoresist-derived porous carbon electrodes and an ionogel electrolyte. Excellent long-term stability and high specific energy are obtained.

scholarly journals Carbonized wood with ordered channels decorated by NiCo2O4 for lightweight and high-performance microwave absorber

2021 ◽  
Vol 11 (1) ◽  
pp. 105-119
Author(s):  
Guangyu Qin ◽  
Xiaoxiao Huang ◽  
Xu Yan ◽  
Yunfei He ◽  
Yuhao Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Interfacial Polarization ◽  
Growth Direction ◽  
Channel Structure ◽  
Light Weight ◽  
Multiple Reflections ◽  
Element Analysis ◽  
Environmental Friendliness ◽  
Carbonized Wood

AbstractWood-derived carbon has a 3D porous framework composed of through channels along the growth direction, which is a suitable matrix for preparing electromagnetic wave (EMW) absorbing materials with low cost, light weight, and environmental friendliness. Herein, the carbonized wood decorated by short cone-like NiCo2O4 (NiCo2O4@CW) with highly ordered straight-channel architecture was successfully manufactured through a facile calcination procedure. The horizontal arrangement of the through channels of NiCo2O4@CW (H-NiCo2O4@CW) exhibits a strong reflection loss value of -64.0 dB at 10.72 GHz with a thickness of 3.62 mm and a low filling ratio of 26 wt% (with the density of 0.98 g·cm-3), and the effective absorption bandwidth (EAB) is 8.08 GHz (9.92–18.0 GHz) at the thickness of 3.2 mm. The excellent microwave absorption (MA) property was ascribed to the ordered-channel structure with abundant interfaces and defects from NiCo2O4@CW, which could promote the interfacial polarization and dipole polarization. What is more, this advantageous structure increased the multiple reflections and scattering. Finite element analysis (FEA) simulation is carried out to detect the interaction between the prepared material and EMW when the ordered channels are arranged in different directions. This research provides a low-cost, sustainable, and environmentally friendly strategy for using carbonized wood to fabricate microwave absorbers with strong attenuation capabilities and light weight.

An MnO2 nanosheet@nitrogen-doped graphene aerogel enables high specific energy and high specific power for supercapacitors and Zn–air batteries

2021 ◽  
Author(s):  
Hui Zhao ◽  
Rijuan Jiang ◽  
Yong Zhang ◽  
Beibei Xie ◽  
Jiali Fu ◽  
...  
Keyword(s):  
Specific Energy ◽  
High Ratio ◽  
Specific Power ◽  
Nitrogen Doped ◽  
Unit Cells ◽  
High Specific Power ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
High Specific Energy ◽  
Mno2 Nanosheet

Ultrathin MnO2 nanosheets (MNSs) with calculated high ratio of exposed surface unit cells on conductive nitrogen-doped graphene assure the assembled aerogel high specific energy and high specific power in supercapacitors and Zn–air batteries.

Designing porous and stable Au coating Ni nanosheets based Ni foam for quasi-symmetric polymer Li–air Batteries

2022 ◽  
Author(s):  
Huimin Zhao ◽  
Xiaoqiang Liu ◽  
Qingwei Zhang ◽  
Huixiang Yin ◽  
Zhirong Zhan ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Specific Energy ◽  
Practical Application ◽  
Ni Foam ◽  
Parasitic Reaction ◽  
High Specific Energy ◽  
Air Cells

Li–air cells have aroused intense interest because of ultra-high specific energy, but their practical application is still hindered by many problems, such as slurry reaction kinetics and serious parasitic reaction...

Facile fabrication of CuCo2S4 nanoparticles/MXene composite as anode for high-performance asymmetric supercapacitor

2021 ◽  
Vol 5 (20) ◽  
pp. 7606-7616
Author(s):  
Xiaobo Chen ◽  
Zimin Ding ◽  
Huan Yu ◽  
Huiran Ge ◽  
Weiwei Liu ◽  
...  
Keyword(s):  
Specific Energy ◽  
Hybrid Composite ◽  
High Performance ◽  
Asymmetric Supercapacitor ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors ◽  
Facile Fabrication ◽  
High Specific Energy

An organ-like MXene/CuCo2S4 hybrid composite was prepared for high-performance asymmetric supercapacitors. The MXene/CuCo2S4//AC supercapacitor displayed high specific energy and cycle stability.

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