نتایج جستجو برای: MnCo2O4

تعداد نتایج: 53  

Journal: :Nanoscale 2015
Mingying Qiu Sihui Zhan Hongbing Yu Dandan Zhu Shengqiang Wang

Ordered mesoporous MnCo2O4 nanomaterials were successfully prepared through the nanocasting route using SBA-15 and KIT-6 as hard templates. These mesoporous nanomaterials were characterized using XRD, BET, TEM, NH3-TPD, H2-TPR, NO-TPD, XPS and DRIFT. The low temperature selective catalytic reduction (SCR) activity of NO with NH3 was investigated, which revealed that 3D-MnCo2O4 using KIT-6 as a ...

Journal: :Chemistry 2015
Anjon Kumar Mondal Dawei Su Shuangqiang Chen Alison Ung Hyun-Soo Kim Guoxiu Wang

A mesoporous flake-like manganese-cobalt composite oxide (MnCo2O4) is synthesized successfully through the hydrothermal method. The crystalline phase and morphology of the materials are characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller methods. The flake-like MnCo2O4 is evaluated as the anode material fo...

Journal: :ACS applied materials & interfaces 2014
Jingfa Li Jiazhao Wang Xin Liang Zhijia Zhang Huakun Liu Yitai Qian Shenglin Xiong

We present a general strategy to synthesize uniform MnCo2O4 submicrospheres with various hollow structures. By using MnCo-glycolate submicrospheres as the precursor with proper manipulation of ramping rates during the heating process, we have fabricated hollow MnCo2O4 submicrospheres with multilevel interiors, including mesoporous spheres, hollow spheres, yolk-shell spheres, shell-in-shell sphe...

Journal: :Nanoscale 2014
Xiaojuan Hou Xianfu Wang Bin Liu Qiufan Wang Tao Luo Di Chen Guozhen Shen

To solve the reduced output voltage caused by the high lithium redox potential of Co3O4 when applied as an anode material in full cells, an effective strategy is to partially replace Co by Mn to form MnCo2O4 without changing the original crystal structure. Herein, 3D hierarchical MnCo2O4 nanosheets arrays grown via a hydrothermal method on carbon cloths, as binder-free anodes for lithium-ion ba...

Journal: :Nanoscale 2015
Soo Min Hwang So Yeun Kim Jae-Geun Kim Ki Jae Kim Jong-Won Lee Min-Sik Park Young-Jun Kim Mohammed Shahabuddin Yusuke Yamauchi Jung Ho Kim

Mesoporous hollow fibres of MnCo2O4 and CoMn2O4 were synthesized by electrospinning and highly exothermic oxygen-mediated combustion reactions during calcination, in which the heating rate affected the final fibre morphology (e.g., single- or double-shell). The anodes consisting of hollow fibres showed excellent electrochemical properties for lithium-ion batteries.

2018
Pingyi Guo Yongbiao Lai Yong Shao Yu Zhang Hang Sun Yuxin Wang

To prevent Cr poisoning of the cathode and to retain high conductivity during solid oxide fuel cell (SOFC) operation, Cu or La doped Co-Mn coatings on a metallic interconnect is deposited and followed by oxidation at 750 ◦C. Microstructure and composition of coatings after preparation and oxidation is analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). High energy micro ...

Journal: :iranian chemical communication 2015
meysam sadeghi sina yekta

in this work, the practicality of catalytic surfaces of nano-structured co3o4 and mnco2o4 for the adsorption and neutralization reactions of dimethyl methyl phosphonate (dmmp) as an toxic agricultural organo-phosphorous pesticide has been investigated. the co3o4 and mnco2o4 nps have been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors a...

Journal: :Materials Science for Energy Technologies 2019

Journal: :Sustainability 2022

Microbial fuel cell (MFC) with a modified anode is one of the new methods to increase MFC efficiency. This study synthesized an cobalt manganese oxide (MnCo2O4@CF) on carbon felt (CF) by easy hydrothermal method and binder-free. Chemical oxygen demand (COD) was measured without diclofenac (DCF). According SEM results, MnCo2O4 uniformly dispersed electrode surface. Moreover, maximum power densit...

اسپینل�های منگنز ? کبالت بدلیل دارا بودن خواصی همچون هدایت الکتریکی بالا و انبساط حرارتی متناسب ، به عنوان پوشش برای اتصال دهنده�های فلزی استفاده می�شوند. در این مقاله اسپینل MnCo2O4 به روش حالت جامد سنتز و بر روی فولاد زنگ نزن 430 به روش الکتروفورزیس پوشش داده شد. مرفولوژی لایه نشست در سه ولتاژ 30، 100 و 300 ولت بررسی گردید و در نهایت نمونه دارای پوشش بهینه و بدون پوشش در دمای 900 درجه سانتی?گ...

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