Results 61 to 70 of about 556,189 (317)

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Effect of trifluoromethanesulfonic acid on the ORR activity of Pt in acid medium

International Journal of Electrochemical Science, 2019
In this paper, to study the effect of sulfonic groups on the ORR activity of Pt and exclude the effect of polytetrafluoroethylene (PTFE) backbone of Nafion, trifluoromethanesulfonic acid (CF3SO3H) was used to simulate the SO3H-terminated side chains of ...
Ruyi Wang, Tian Tian, Zhaohui Wan, Fen Zhou, L.I. Shang, Jinting Tan, Mu Pan   +6 more
doaj   +1 more source

Oxygen Reduction Activity of Carbon Nitride Supported on Carbon Nanotubes

, 2012
Fuel cells offer an alternative to burning fossil fuels, but use platinum as a catalyst which is expensive and scarce. Cheap, alternative catalysts could enable fuel cells to become serious contenders in the green energy sector.
Islam, Nazrul Md, Kakimoto, Masa-aki, Kuroki, Shigeki, Lyth, Stephen Matthew, Miyata, Seizo, Nabae, Yuta   +5 more
core   +1 more source

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

Advanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing, Abdulrahman Mohabbat, István Boldog, Jens Möllmer, Marcus Lange, Yulyan Haiduk, Tobias Heinen, Vladimir Pankov, Oliver Weingart, Christoph Janiak   +9 more
wiley   +1 more source

Oxygen redox chemistry: A new approach to high energy density world

Next Materials
Sodium-ion batteries (SIBs) have been considered as promising candidates for large scale energy storage systems due to the great abundance of sodium resources.
Xinyin Cai, Zulipiya Shadike, Nan Wang, Lin Liu, Enyuan Hu, Junliang Zhang   +5 more
doaj   +1 more source

Fuel Cells [PDF]

, 2001
The Environmental and Energy Study Institute hosted two Congressional briefings to discuss the potential of fuel cell technologies in today's market as well as future energy markets. The U.S. Department of Energy, with the support of Sen. Murkowski (R-AK)
Beth Bleil, Kim Doherty
core  

Adaptive online parameter estimation algorithm of PEM fuel cells [PDF]

, 2019
Since most of fuel cell models are generally nonlinearly parameterized functions, existing modeling techniques rely on the optimization approaches and impose heavy computational costs.
Costa Castelló, Ramon, Jing, Na, Xing, Yashan   +2 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Enhanced metal-support interaction of nitrogen-doped carbon supported Pt nanoparticles with high activity for electrocatalytic oxygen reduction reaction

Carbon Neutrality
Nitrogen-doping has been proposed as a method to enhance the performance of Pt-based electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs).
Hong Zhang, Huanqiao Li, Xiaoming Zhang, Shansheng Yu, Suli Wang, Gongquan Sun   +5 more
doaj   +1 more source

Simulation and experimental study of local high frequency resistance distribution in proton exchange membrane fuel cells under steady and dynamic conditions

Heliyon
Proton-exchange membrane (PEM) dry–wet variation during PEM fuel cell (PEMFC) operation markedly affects PEMFC lifespan. Therefore, deeper insights into the mechanical degradation mechanism of PEM require analysis of the membrane dry–wet change process ...
Xin Zhan, Jiaqi Sun, Feng Ding, Xiaozhi Xu, Wei Song, Zhigang Shao   +5 more
doaj   +1 more source