Results 121 to 130 of about 13,688,735 (296)

Charge‐Tunable Coacervate Micelles for Separator Engineering in Lithium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
A separator engineering strategy based on charge‐tunable complex coacervate core micelles (C3Ms) is presented to form an ion‐selective layer regulating polysulfide transport in Li–S batteries. The micelles enable uniform adsorption onto commercial polypropylene separators and infiltration throughout the internal pore network, suppressing polysulfide ...
Yongsheng Zhang, J. R. Andrade Aguirre, Julien Es Sayed, Chongyang Jiang, Yuxuan Zhang, Xiaolong He, Yinyu Xiang, Yutao Pei, Xiangping Zhang, Petra Ruldolf, Marleen Kamperman, Giuseppe Portale   +11 more
wiley   +1 more source

Chemical Control of Space Charge Barriers and Grain Boundary Resistances in Polycrystalline Ionic Conductors

Advanced Functional Materials, EarlyView.
Grain boundaries (GBs) in polycrystalline materials often block charge transport and drive degradation. Using Gd‐doped CeO2 as a model electrolyte used in fuel/electrolysis cells, we developed a core‐shell infiltration method to selectively modify GB chemistry and space charge potential, achieving orders‐of‐magnitude ionic conductivity changes.
Z. Sha, T. Defferriere, C. Gilgenbach, J. M. LeBeau, I. Lubomirsky, H. L. Tuller   +5 more
wiley   +1 more source

2D Co‐Assembly of Solid Acids Enables Stable Superprotonic Conduction Above 260°C

Advanced Functional Materials, EarlyView.
A two‐dimensional co‐assembly strategy integrates antimony phosphate and phosphotungstic acid nanosheets into free‐standing inorganic lamellar membranes with confined acid–acid interfaces. The resulting interfacial hydrogen‐bond network enables anhydrous proton conductivity exceeding 0.1 S cm−1 at 260°C and supports stable high‐temperature fuel‐cell ...
Qiuning Li, Kaiqiang He, Dehua Dong, Fanmengjing Wang, Xiangcheng Liu, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Huanting Wang   +8 more
wiley   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

Advanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho, Yunseong Ji, Minkyu Choi, Junsu Kim, Yejin Kim, Su Jeong Lee, Wooyoung Choi, Choong Hoo Lee, Ju Yeon Kim, Ohchan Kwon, Hanim Kim, Du Yeol Ryu, Ki Chul Kim, Dae Woo Kim   +13 more
wiley   +1 more source

Alternative Gas Diffusion Electrode Designs: Influence of Porosity Gradients on the Electrochemical Activity

Gas diffusion electrodes (GDEs) are essential in various electrochemical applications aimed at reducing CO2 emissions and combating climate change, such as fuel cells, electrolyzers and metal-air batteries.
Skadell, Karl, Bekisch, Artur, Christiansen, Silke, Weidl, Roland, Ast, Johannes, Schulz, Matthias, Stelter, Michael   +6 more
core   +1 more source

Domain Engineering and Anisotropic Domain‐Wall Photovoltaic Effects in Ferroelectric SnS

Advanced Functional Materials, EarlyView.
The bulk photovoltaic effect at domain walls in the in‐plane ferroelectric 2D semiconductor SnS is investigated using periodic domain structures. Unlike conventional oxide ferroelectrics, domain walls of SnS do not contribute to photocurrent generation perpendicular to the domain walls.
Ryo Nanae, Satsuki Kitamura, Tomonori Nishimura, Kaito Kanahashi, Tomoaki Kameda, Katsunori Wakabayashi, Redhwan A Moqbel, Ting‐Hsuan Wu, Kung‐Hsuan Lin, Yosuke Ogawa, Eiji Nishibori, Keisuke Shinokita, Kazunari Matsuda, Jui‐Han Fu, Vincent Tung, Takashi Taniguchi, Kenji Watanabe, Kosuke Nagashio   +17 more
wiley   +1 more source

Measurements of gaseous diffusion coefficients by a gas chromatographic technique

, 1969
A method is presented for measuring gaseous diffusion coefficients using a gas chromatographic technique. Diffusion coefficients were measured for the systems: argon, krypton, oxygen, and nitrogen diffusing into helium at temperatures from 77 to 400 ...
Wasik, S.P.; McCulloh, K.E.
core   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

Advanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang, Chao Hsuan (Joseph) Sung, Haitao Yu, Ezra Sarmiento, Katarina Kotanchek, Ryan Christopher Lee, Michelle Chan, David Kisailus   +7 more
wiley   +1 more source

Measurement of diffusion coefficients via diffusion in flowing gas I. Method

, 1980
Diffusion of gases was investigated by a method in which one gas (“admixture gas”) in a tube diffuses against a constant flow of another gas (“main gas”) in such a way that a stationary concentration distribution builds up. The (exponential) upstream decrease in concentration of the admixture gas was measured.
Reus, K.W., Zwakhals, C.J., Smit, J.A.
openaire   +1 more source

Dual‐Layer Conducting and Redox Polymer Bioanodes for Synergistic Enhancement of Microbial Extracellular Electron Transfer

Advanced Functional Materials, EarlyView.
A hybrid PEDOT/Fc‐LPEI conducting/redox polymer bioanode synergistically improves microbial extracellular electron transfer (EET) in Shewanella oneidensis MR‐1. The dual‐layer interface delivers 18‐fold higher current output and 27‐fold greater charge collected than bare carbon felt, highlighting an effective strategy for high‐performance ...
Shenghan Gu, Saman Azhari, Kuniaki Nagamine, Takeo Miyake, Gábor Méhes   +4 more
wiley   +1 more source