Results 91 to 100 of about 31,250 (195)

Bio-inspired iron metal–carbon black based nano-electrocatalyst for the oxygen reduction reaction

, 2017
Purpose The purpose of this paper is to introduce bio-inspired FeN4-S-C black nano-electrocatalyst for the oxygen reduction reaction (ORR) in an alkaline medium. The FeN4-S-C derived without pyrolysis of precursors in high temperature is recognized as a
Behnam Seyyedi
core   +1 more source

Ferroelectric Catalysts in the Hydrogen Evolution Reaction: A Perspective

Advanced Science, EarlyView.
This perspective summarizes recent advances in ferroelectric (FE) catalysts for the hydrogen evolution reaction (HER). It first introduces HER fundamentals and FE mechanisms, then classifies FE catalysts into single‐phase, single‐atom‐modified, heterostructured, and other engineered types, with representative examples.
Rongxuan Lu, Weizhen Meng, Zhenxiang Cheng, Judy N. Hart, Michael Ferry, Sean Li, Wenxian Li   +6 more
wiley   +1 more source

Enhanced OER performance by varying Al-WO3 electrocatalyst thickness: Process optimization

Results in Engineering
Oxygen evolution reactions (OER) are highly significant and play a critical role in the advancement of fuel cells, electrolyzers, chemicals, and solar energy conversion devices.
Adil Mehboob, Ayesha Sadiqa, Awais Ahmad, Muhammad Rashid, Noha Said Bedowr, Azka Awais, Nafis Mahmud, Mohamed A. Habila, Muhammad Arsalan   +8 more
doaj   +1 more source

Advanced theoretical modeling methodologies for electrocatalyst design in sustainable energy conversion [PDF]

Electrochemical reactions are pivotal for energy conversion and storage to achieve a carbon-neutral and sustainable society, and optimal electrocatalysts are essential for their industrial applications. Theoretical modeling methodologies, such as density
Guo, Zhongyuan, Liu, Chuangwei, Chen, Jun, Han, Yun, Wang, Tianyi, Wu, Qilong, https://orcid.org/   +6 more
core   +2 more sources

Electrocatalytic CO2 Reduction over Sn‐Cu Bimetallic Catalysts Synthesized via an Amalgamated Lithium Metal Method

Advanced Science, EarlyView.
An amalgamated lithium metal method enables systematic control of Sn–Cu active‐site dimensions from isolated atoms to nanocrystallites. Increasing the metal loading shifts CO2 electroreduction selectivity from acetaldehyde on highly dispersed Sn–Cu sites to formate on Sn‐rich crystallites, revealing how bimetallic dispersion and local coordination ...
Minghao Xie, Shichen Guo, Jianxin Wang, Haozhe Zhang, Xun Zhan, Lauren Valentino, Di‐Jia Liu   +6 more
wiley   +1 more source

ZrCo3B2 and HfCo3B2 Electrodes Go on Stage for Oxygen Evolution Reaction

Advanced Science, EarlyView.
The intermetallic compounds ZrCo3B2 and HfCo3B2 with distinctive chemical bonding features are excellent OER precursors, restructuring into OER‐active electrocatalysts delivering significantly high OER activities compared to the elemental Co, which is obvious from their lower onset potentials and increased obtained current densities.
Fatma Aras, Ulrich Burkhardt, Simone G. Altendorf, Yuri Grin, Iryna Antonyshyn   +4 more
wiley   +1 more source

Carbon black supported manganese phthalocyanine: Efficient electrocatalyst for nitrogen reduction to ammonia

Engineering Reports
Ammonia (NH3) is regarded as a renewable energy source as well as an important molecule for agricultural applications. The energy‐intensive Haber‐Bosch method produces large amounts of CO2 gas during ammonia production.
Ashadul Adalder, Santosh R. Waghela, Sachin A. Shelukar, Nilmadhab Mukherjee, Swati Das, Uttam Kumar Ghorai   +5 more
doaj   +1 more source

Improving the activity and stability of a Pt/C electrocatalyst for direct methanol fuel cells

, 2010
Ketjen Black (KB) as an electrocatalyst support was treated at 900 degrees C in the presence of cobalt and nickel nitrates, and characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, transmission electron microscopy and nitrogen ...
Liu, Ying, Yan, Shiyou, Sun, Gongquan, Qi, Jing, Jiang, Qian, Shiyou Yan, Ying Liu, Jing Qi, Gongquan Sun, Qian Jiang   +9 more
core   +1 more source

Disentangling Elemental Roles in an Amorphous Medium‐Entropy Electrocatalyst for Oxygen Evolution

Advanced Science, EarlyView.
An amorphous medium‐entropy FeCoNiMo‐a catalyst with a unique nanoring architecture is synthesized via a solvothermal method. The catalyst exhibits exceptional stability in anion exchange membrane water electrolysis, maintaining stable operation for over 600 h at 1 A cm−2.
Jinhu Wu, Xianjun Cao, Cheng Gong, Dongfang Li, Yaojie Lei, Daojin Zhou, Pengpeng Zhang, Zeliang Wu, Bin Yu, Xingwang Peng, Bernt Johannessen, Somnath Chanda Roy, Jinqiang Zhang, Hao Liu, Yufei Zhao   +14 more
wiley   +1 more source

Innovative Air Cathode with Ni‐Doped Cobalt Sulfide in Highly Ordered Macroporous Carbon Matrix for Rechargeable Zn–Air Battery

Advanced Science
To realize the practical application of rechargeable Zn–Air batteries (ZABs), it is imperative to develop a non‐noble metal‐based electrocatalyst with high electrochemical performance for the oxygen reduction reaction (ORR) and oxygen evolution reaction (
Yujin Son, Kyeongseok Min, Sungkyun Cheong, Boyoung Lee, Sang Eun Shim, Sung‐Hyeon Baeck   +5 more
doaj   +1 more source