Electrochemical Nitrate Production via Nitrogen Oxidation with Atomically Dispersed Fe on N-Doped Carbon Nanosheets

ACS Nano ◽  
2021 ◽  
Author(s):  
Ying Guo ◽  
Shaoce Zhang ◽  
Rong Zhang ◽  
Donghong Wang ◽  
Daming Zhu ◽  
...  
Keyword(s):  
Carbon Nanosheets ◽  
Nitrate Production ◽  
Nitrogen Oxidation

Ultrathin Carbon Nanosheets for Highly-efficient Capacitive K-ion and Zn-ion Storage

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Metal Ion ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
High Efficient ◽  
Ion Storage

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>

Co2P nanoparticle/multi-doped porous carbon nanosheets for the oxygen evolution reaction

2021 ◽  
Author(s):  
Xinxin Sang ◽  
Hengbo Wu ◽  
Nan Zang ◽  
Huilian Che ◽  
Dongyin Liu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Porous Carbon ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Carbon Nanosheets

Co2P hybridized with multi-doped carbon nanoleaves is obtained via direct carbonization of ZIF-L/PEI/PA and show good electro-catalytic performance in OER.

scholarly journals Ultra-small Fe3O4 nanodots encapsulated in layered carbon nanosheets with fast kinetics for lithium/potassium-ion battery anodes

RSC Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 1261-1270
Author(s):  
Qianqian Peng ◽  
Chuan Guo ◽  
Shuo Qi ◽  
Weiwei Sun ◽  
Li-Ping Lv ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Robust Stability ◽  
Potassium Ion ◽  
High Conductivity ◽  
Fast Reaction ◽  
Fast Kinetics ◽  
Carbon Nanosheets

Ultra-small Fe3O4 nanodots encapsulated in layered carbon nanosheet nanocomposites were synthesized, showing fast reaction kinetics, high conductivity, and robust stability.

Co9S8 Nanoparticles Embedded in Nitrogen, Sulfur Codoped Porous Carbon Nanosheets for Efficient Oxygen/Hydrogen Electrocatalysis

2021 ◽  
pp. 138299
Author(s):  
Xiaojing Zhu ◽  
Qikai Wu ◽  
Jiale Dai ◽  
Dengke Zhao ◽  
Chenghao Yang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Nanosheets

scholarly journals Comparative Exergy Analysis of Units for the Porous Ammonium Nitrate Granulation

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 280
Author(s):  
Dmytro Levchenko ◽  
Andrii Manzharov ◽  
Artem Artyukhov ◽  
Nadiya Artyukhova ◽  
Jan Krmela
Keyword(s):  
Ammonium Nitrate ◽  
Exergy Analysis ◽  
Evaporative Cooling ◽  
Energy Resources ◽  
Unit Mass ◽  
Brayton Cycle ◽  
Basic Scheme ◽  
Target Parameter ◽  
Effective Implementation ◽  
Nitrate Production

The article deals with the study on the efficiency of units for porous ammonium nitrate production. The ways which increase the effective implementation of energy resources are determined by including the ejector recycling module, heat and mass exchangers that utilize principles of regenerative indirect evaporative cooling, and the sub-atmospheric inverse Brayton cycle. Mixed exergy analysis evaluates all flows of the system contour as those of the same value. The target parameter for determining the efficiency of both systems is the ratio of the unit’s productivity to the exergy expenditures to produce the unit mass of the product. As a result, it is found that the mentioned devices and units enable to increase the efficiency of the basic scheme by 87%.

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