Simple conversion of earth-abundant coal to high-performance bifunctional catalysts for reversible oxygen electrodes

2018 ◽  
Vol 8 (4) ◽  
pp. 1104-1112 ◽  
Author(s):  
X. X. Chen ◽  
J. Wang ◽  
X. N. Huang ◽  
X. F. Zhao ◽  
P. G. Liu ◽  
...  

Efficient bifunctional electrocatalysts for reversible oxygen electrodes are vitally important for the realization of important future generation electrochemical energy conversion devices, such as regenerative fuel cells and rechargeable metal–air batteries.

2020 ◽  
Vol 8 (27) ◽  
pp. 13795-13805 ◽  
Author(s):  
Ranjith Bose ◽  
Vasanth Rajendiran Jothi ◽  
K. Karuppasamy ◽  
Akram Alfantazi ◽  
Sung Chul Yi

Designing highly active bifunctional electrocatalysts from Earth-abundant elements has great prospects for substituting precious-metal based catalysts in energy conversion processes, such as water splitting.


2017 ◽  
Vol 5 (28) ◽  
pp. 14763-14774 ◽  
Author(s):  
Liangzhen Liu ◽  
Suqin Ci ◽  
Linlin Bi ◽  
Jingchun Jia ◽  
Zhenhai Wen

Exploring high-performance electrocatalysts is of great importance for developing renewable energy conversion systems.


2020 ◽  
Vol 13 (10) ◽  
pp. 3633-3645 ◽  
Author(s):  
Min Suc Cha ◽  
Ji Eun Park ◽  
Sungjun Kim ◽  
Seung-Hui Han ◽  
Sang-Hun Shin ◽  
...  

An aryl ether-free less-phenyl adsorbing poly-carbazole-based polymer shows superior performance and durability for anion exchange membrane fuel cells and electrolyzers.


2015 ◽  
Vol 3 (16) ◽  
pp. 8405-8412 ◽  
Author(s):  
Zhiquan Wang ◽  
Wenqiang Yang ◽  
Shahid P. Shafi ◽  
Lei Bi ◽  
Zhenbin Wang ◽  
...  

Intermediate temperature solid-oxide fuel cells (IT-SOFCs) have become a need worldwide due to their greater fuel efficiency, lower air pollution, much reduced cost and excellent longtime stability in energy conversion devices.


2019 ◽  
Vol 7 (11) ◽  
pp. 6337-6347 ◽  
Author(s):  
Xing Qian ◽  
Hongyu Liu ◽  
Jiahui Yang ◽  
Huiwen Wang ◽  
Jie Huang ◽  
...  

Co–Cu–WSx ball-in-ball nanospheres have been synthesized and used as highly efficient bifunctional electrocatalysts for both DSSCs and the HER.


2018 ◽  
Vol 6 (16) ◽  
pp. 6987-6996 ◽  
Author(s):  
Saeed Ur Rehman ◽  
Rak-Hyun Song ◽  
Tak-Hyoung Lim ◽  
Seok-Joo Park ◽  
Jong-Eun Hong ◽  
...  

In this study, a new method is developed for the fabrication of nanofibrous LaCoO3 (LCO) perovskites as cathodes (oxygen electrodes) for solid oxide fuel cells (SOFCs).


2017 ◽  
Vol 5 (15) ◽  
pp. 6884-6892 ◽  
Author(s):  
Yandong Duan ◽  
Nianqing Fu ◽  
Sibai Li ◽  
Xiaoyang Yang ◽  
Jiaxin Zheng ◽  
...  

The optimal η based on Sn0.925Ta0.075O2/C is 8.38%, which is one of the highest η values for fully flexible DSSCs.


2015 ◽  
Vol 2015 ◽  
pp. 1-20 ◽  
Author(s):  
Young-Woo Lee ◽  
SeungNam Cha ◽  
Kyung-Won Park ◽  
Jung Inn Sohn ◽  
Jong Min Kim

Fuel cells, converting chemical energy from fuels into electricity directly without the need for combustion, are promising energy conversion devices for their potential applications as environmentally friendly, energy efficient power sources. However, to take fuel cell technology forward towards commercialization, we need to achieve further improvements in electrocatalyst technology, which can play an extremely important role in essentially determining cost-effectiveness, performance, and durability. In particular, platinum- (Pt-) based electrocatalyst approaches have been extensively investigated and actively pursued to meet those demands as an ideal fuel cell catalyst due to their most outstanding activity for both cathode oxygen reduction reactions and anode fuel oxidation reactions. In this review, we will address important issues and recent progress in the development of Pt-based catalysts, their synthesis, and characterization. We will also review snapshots of research that are focused on essential dynamics aspects of electrocatalytic reactions, such as the shape effects on the catalytic activity of Pt-based nanostructures, the relationships between structural morphology of Pt-based nanostructures and electrochemical reactions on both cathode and anode electrodes, and the effects of composition and electronic structure of Pt-based catalysts on electrochemical reaction properties of fuel cells.


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