Results 91 to 100 of about 508,344 (250)

Sulfur Cycling in Lake Superior: Characterizing the Role of Organic Sulfur in Oligotrophic Systems

, 2021
University of Minnesota M.S. thesis. 2021. Major: Chemistry. Advisor: Kathryn Schreiner. 1 computer file (PDF); 156 pages.Microbially mediated sulfate reduction is important in lake sediment due to its impact on numerous other biogeochemical cycles ...
Petersen, Madelyn
core  

Additively Manufactured Geometry‐Reconfigurable Soft Neural Probes With Monolithic Multifunctionality

Advanced Functional Materials, EarlyView.
A geometry‐reconfigured additive manufacturing strategy converts planar printed soft materials into soft compact neural probes with integrated hydrogel electrodes and microfluidic channels. The resulting NeuroMAP platform enables scalable multichannel recording, localized chemical delivery, stable in vivo electrophysiological recording, and reduced ...
Hyunjin Lee, Xinyi Wang, Sirui Li, Jihyang Park, Hyunseok Lee, Jianting Yao, Kedar Narayan, Yuqi Wang, Jiashu Ren, Yueqi Deng, Salahuddin Ahmed, Denver I. Greenawalt, Archana Pandiyan, Loganathan Veeramuthu, Chi‐Ching Kuo, Tao Zhou   +15 more
wiley   +1 more source

Prussian blue-derived Fe2O3/sulfur composite cathode for lithium-sulfur batteries

, 2014
Porous Fe2O3 was prepared by simple annealing of preformed Prussian blue that was synthesized from a wet chemistry method. The obtained porous Fe2O3 nanoparticles were then mixed with sulfur and used as cathode for lithium-sulfur batteries.
Sun, Zixu, Xin, Fengxia, Shen, Cai, Han, Weiqiang, Zhao, Chongchong   +4 more
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Sulfur Cycling in Five Forest Ecosystems

, 1986
The cycling and retention of sulfur were studied in five forest ecosystems: a chestnut oak and yellow poplar stand on Walker Branch Watershed, Tennessee; a mixed oak stand on Camp Branch Watershed, Tennessee; and a red alder and Douglas-fir stand at the ...
Richter, D. D., Van Miegroet, H., Johnson, D. W., Cole, D. W., Kelly, J. M.   +4 more
core   +1 more source

Stabilization of Strongly Reduced Fe(I) Single Atom Species Coordinated in a 2D Self‐Assembled Metal–Organic Network

Advanced Functional Materials, EarlyView.
A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar, Basant Roondhe, Michela De Col, Stefania Baronio, Matteo Jugovac, Mattia Scardamaglia, Eleanor Frampton, Nikolay Vinogradov, Paolo Giannozzi, Erik Vesselli   +9 more
wiley   +1 more source

Regenerative Polysulfide-Scavenging Layers Enabling Lithium–Sulfur Batteries with High Energy Density and Prolonged Cycling Life

, 2017
Lithium–sulfur batteries, notable for high theoretical energy density, environmental benignity, and low cost, hold great potential for next-generation energy storage.
Xiaoyan Liu (158152), Fan Li (49953), Yunfeng Lu (748569), Ge Wang (56838), Mei Cai (1752745), Zaiyuan Le (1511548), Qiangfeng Xiao (1850314), Hao Bin Wu (1932526), Li Shen (110858), Fei Sun (102854), Fang Liu (13271)   +10 more
core   +1 more source

Mechanistic Origins of Chemo‐Mechanical Instability and Failure in Solid‐State Lithium‐Sulfur Electrodes

Advanced Functional Materials, EarlyView.
Conversion‐induced sulfur expansion generates strong mechanical constraints and localized stresses within solid‐state Li‐S cathodes. Heterogeneous solid‐electrolyte confinement creates tensile strain‐energy hotspots that govern particle cracking. Larger sulfur particles accelerate fracture, while higher porosity relaxes constraint and delays damage ...
Arpan K. Sharma, Ahmad Ahmad, Bairav S. Vishnugopi, Partha P. Mukherjee   +3 more
wiley   +1 more source

Evidence for cryptic sulfur cycling in Atlantic ocean sediments affected by aeolian dry deposition of Saharan dust

Frontiers in Marine Science
Cryptic sulfur cycling, characterized by nearly quantitative oxidation of hydrogen sulfide, is characteristic for sediments with low organic matter and high reactive iron contents.
Tomas Israel Grijalva-Rodriguez, Alexandra V. Turchyn, Sharon Albin, Efrat Eliani-Russak, Alen Manashirov, Irina Zweig, Alexey Kamyshny   +6 more
doaj   +1 more source

Effect of electrochemical cycling on microstructure of sulfur electrodes [PDF]

, 2018
In lithium–sulfur (Li–S) batteries, during discharge, there is a significant morphology change as solid sulfur (S) gets dissolved and undergoes successive reduction and finally precipitates as lithium sulfide (Li2S) in porous cathode [1]. This also leads
Berkinova, Zhazira, Golman, Boris, Yermukhambetova, Assiya   +2 more
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GeS as an Emerging OTS Material: Atomic Structure and Modeling of ON/OFF Switching

Advanced Functional Materials, EarlyView.
The structural puzzle of glassy GeS, an advanced memory‐selector material, has finally been disentangled, revealing a patchwork of mixed tetrahedral and trigonal species. Under a high electric field, over‐ and under‐coordinated Ge and S defects, together with three‐membered rings, form an interconnected network associated with localized and extended ...
Andrey Tverjanovich, Jörg C. Neuefeind, Chris J. Benmore, Daniele Fontanari, Anton Sokolov, Maxim Khomenko, Shinji Kohara, Aleksei Bytchkov, Takeshi Usuki, Maria Bokova, Mohammad Kassem, Pascal Masselin, Mariana Milochova, Eugene Bychkov   +13 more
wiley   +1 more source