Results 91 to 100 of about 556,189 (317)

High electrochemical activity of the oxide phase in model ceria–Pt and ceria–Ni composite anodes [PDF]

, 2012
Fuel cells, and in particular solid-oxide fuel cells (SOFCs), enable high-efficiency conversion of chemical fuels into useful electrical energy and, as such, are expected to play a major role in a sustainable-energy future.
Chueh, William C., Haile, Sossina M., Hao, Yong, Jung, WooChul   +3 more
core  

Cross-linked CoMoO4/rGO nanosheets as oxygen reduction catalyst [PDF]

, 2017
Development of inexpensive and robust electrocatalysts towards oxygen reduction reaction (ORR) is crucial for the cost-affordable manufacturing of metal-air batteries and fuel cells. Here we show that cross-linked CoMoO4 nanosheets and reduced graphene
Fu, Jiaqi, Li, Yang-Guang, Meng, Jiang-Li, Miras, Haralampos N., Tan, Hua-Qiao, Wang, Yong-Hui, Wei, Mei-Jie, Zang, Hong-Ying   +7 more
core   +2 more sources

Solvent‐Free Manufacturing of Multifunctional Gas Diffusion Electrode Architectures for Enhanced CO2 Conversion From Low‐Concentration Streams

Advanced Functional Materials, EarlyView.
A tandem gas diffusion electrode (GDE) leveraging hierarchically engineered microgranules enables efficient CO2 electroreduction under dilute CO2 conditions. A key innovation lies in the solvent‐free precision assembly of metal–organic‐frameworks, carbon nanotubes, and copper nanoparticles.
Kai‐Jen Wu, Carter Racine, Ahmed Badreldin, Shengyao Wang, Zongsu Han, Hong‐Cai Zhou, Ying Li, Heng Pan   +7 more
wiley   +1 more source

The Molecular Sieving of Propylene and Propane on SAPO-35 Molecular Sieve

Nanomaterials
Selective adsorption is regarded as a promising alternative for propylene/propane separation. However, the similar physicochemical properties of these two components pose a challenge in developing adsorbents that simultaneously exhibit high selectivity ...
Yansi Tong, Kadi Hu, Qihao Yang, Hao Liu, Danhua Yuan, Jungang Wang, Mengting Lv, Hailong Wang, Ziqi Tian, Yunpeng Xu, Liang Chen   +10 more
doaj   +1 more source

The role of fuel cells in NASA's space power systems [PDF]

A history of the fuel cell technology is presented and compared with NASA's increasing space power requirements. The role of fuel cells is discussed in perspective with other energy storage systems applicable for space using such criteria as type of ...
Been, J. F.
core   +1 more source

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

Advanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He, Fanmengjing Wang, Dehua Dong, Yuan Kang, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Douglas R. MacFarlane, Huanting Wang   +8 more
wiley   +1 more source

New electrocatalysts for hydrogen-oxygen fuel cells [PDF]

, 1970
Platinum-silver, palladium-gold, and platinum-gold alloys serve as oxygen reduction catalysts in high-current-density cells. Catalysts were tested on polytetrafluoroethylene-bonded cathodes and a hydrogen anode at an operating cell temperature of 80 ...
Cattabriga, R. A., Giner, J., Parry, J., Swette, L. L.   +3 more
core   +1 more source

Structural and Chemical Engineering of Sub‐Nanochannel Membranes Toward Ion Selectivity

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in structural and chemical engineering of sub‐nanochannels for ion selectivity. We first introduce fundamental ion transport mechanisms within sub‐nanochannels, followed by strategies to tune pore size, geometry, and surface functionalities, categorized into charge‐based, ion‐recognition, hydrophilic bonding, and ...
Yuyu Su, Huacheng Zhang, Tamar L. Greaves, Qi Han, Weiwei Lei, Dan Liu   +5 more
wiley   +1 more source

Gas diffusion layer regulated phosphoric acid distribution for durable high-temperature polymer electrolyte membrane fuel cells under high-current loading

Carbon Neutrality
High-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) offer promising power sources for heavy-duty vehicles (HDV) due to their effective management of heat and water.
Weiwei Ni, Zhangxun Xia, Ruili Sun, Zinan Zhang, Xi Chen, Yangyang Hu, Jicai Huang, Suli Wang, Gongquan Sun   +8 more
doaj   +1 more source

Precise design of triple phase boundaries and pores in cathode catalyst layers to accelerate oxygen transport for proton exchange membrane fuel cells

Materials Reports: Energy
Triple phase boundary (TPB) and pore structure in the cathode catalyst layer (CCL) play vital roles in the utilization of Pt-based catalyst in proton exchange membrane fuel cells (PEMFCs).
Huiyuan Li, Shu Yuan, Yuan Ren, Ye Wang, Jiabin You, Xiaojing Cheng, Liuxuan Luo, Xiaohui Yan, Shuiyun Shen, Junliang Zhang   +9 more
doaj   +1 more source