当前位置：
X-MOL 学术
›
New J. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Electrochemical water splitting exploration of MnCo2O4, NiCo2O4 cobaltites
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-09-30 , DOI: 10.1039/d0nj04188b B. Jansi Rani 1, 2, 3, 4, 5 , R. Yuvakkumar 1, 2, 3, 4, 5 , G. Ravi 1, 2, 3, 4, 5 , S. I. Hong 6, 7, 8, 9 , Dhayalan Velauthapillai 10, 11, 12, 13 , Ramesh K. Guduru 5, 14, 15, 16 , M. Thambidurai 17, 18, 19, 20, 21 , Cuong Dang 17, 18, 19, 20, 21 , Wedad A. Al-onazi 22, 23, 24, 25, 26 , Amal M. Al-Mohaimeed 22, 23, 24, 25, 26
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-09-30 , DOI: 10.1039/d0nj04188b B. Jansi Rani 1, 2, 3, 4, 5 , R. Yuvakkumar 1, 2, 3, 4, 5 , G. Ravi 1, 2, 3, 4, 5 , S. I. Hong 6, 7, 8, 9 , Dhayalan Velauthapillai 10, 11, 12, 13 , Ramesh K. Guduru 5, 14, 15, 16 , M. Thambidurai 17, 18, 19, 20, 21 , Cuong Dang 17, 18, 19, 20, 21 , Wedad A. Al-onazi 22, 23, 24, 25, 26 , Amal M. Al-Mohaimeed 22, 23, 24, 25, 26
Affiliation
|
One-step solvothermal synthesis is used to produce Mn and Ni based cobaltites. The cubic phases of MnCo2O4 and NiCo2O4 are confirmed using X-ray diffraction spectra (XRD). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images, along with the crystalline orientations correlated to SAED patterns, reveal the fine nanoparticle morphology and typical nanorod morphology of Mn and Ni cobaltites. Electrochemical studies are used to test the electrochemical water oxidation capabilities of both cobaltites. Unlike MnCo2O4, which has a poor overpotential of 507 mV, NiCo2O4 nanorods synthesized via a controlled alkaline chemical atmosphere of pH-10 show high catalyzing ability to split water at a low overpotential of 364 mV. Activity from linear sweep voltammograms (LSV) shows similar superiority of the NiCo2O4 nanorods with a current density of 3.21 mA g−1 at 10 mV s−1 and a minimal Tafel slope value of 67 mV dec−1. The low overpotential of 364 mV is also maintained throughout the electrochemical water oxidation process, with a current density of around 0.6 mA g−1 after 12 h. The selected candidate could be explored as a brilliant electrode material for long-term and sustainable energy production applications in the near future.
中文翻译：
MnCo2O4，NiCo2O4钴的电化学水分解研究
一步溶剂热合成用于生产Mn和Ni基钴酸盐。碳酸锰的立方相2 ö 4和镍钴2 ö 4是使用X射线衍射光谱（XRD）确认。扫描电子显微镜（SEM）和透射电子显微镜（TEM）图像，以及与SAED图案相关的晶体取向，揭示了锰和镍钴矿的精细纳米颗粒形态和典型的纳米棒形态。电化学研究用于测试两种钴的电化学水氧化能力。与MnCo 2 O 4的过电位差为507 mV不同，NiCo 2 O 4纳米棒通过受控的pH-10碱性化学气氛在364 mV的低超电势下显示出高分解水的催化能力。线性扫描伏安图（LSV）的活性显示出NiCo 2 O 4纳米棒的类似优势，在10 mV s -1时的电流密度为3.21 mA g -1，最小Tafel斜率值为67 mV dec -1。在整个电化学水氧化过程中也保持了364 mV的低过电势，在12 h后的电流密度约为0.6 mA g -1。选定的候选材料可在不久的将来作为长期和可持续能源生产应用的极好的电极材料进行探索。
更新日期：2020-10-08
中文翻译：
MnCo2O4，NiCo2O4钴的电化学水分解研究
一步溶剂热合成用于生产Mn和Ni基钴酸盐。碳酸锰的立方相2 ö 4和镍钴2 ö 4是使用X射线衍射光谱（XRD）确认。扫描电子显微镜（SEM）和透射电子显微镜（TEM）图像，以及与SAED图案相关的晶体取向，揭示了锰和镍钴矿的精细纳米颗粒形态和典型的纳米棒形态。电化学研究用于测试两种钴的电化学水氧化能力。与MnCo 2 O 4的过电位差为507 mV不同，NiCo 2 O 4纳米棒通过受控的pH-10碱性化学气氛在364 mV的低超电势下显示出高分解水的催化能力。线性扫描伏安图（LSV）的活性显示出NiCo 2 O 4纳米棒的类似优势，在10 mV s -1时的电流密度为3.21 mA g -1，最小Tafel斜率值为67 mV dec -1。在整个电化学水氧化过程中也保持了364 mV的低过电势，在12 h后的电流密度约为0.6 mA g -1。选定的候选材料可在不久的将来作为长期和可持续能源生产应用的极好的电极材料进行探索。
京公网安备 11010802027423号