Diffusion layer parameters influencing optimal fuel cell performance

The performance of polymer electrolyte fuel cells (PEFCs) is substantially influenced by the morphology of the gas diffusion layer. Cells utilising sintered gas diffusion layers made with a low pore volume Acetylene Black carbon, at an optimised thickness, showed better performance compared with cells containing Vulcan XC-72R carbon. The cells were optimised using both oxygen and air as oxidants showing that different conditions were required in each case to achieve optimum cell performance. A model, in which the hydrophobicity and porosity of the diffusion layer affect water impregnation and gas diffusion through the gas diffusion layer, is presented to explain the influence of the diffusion layer morphology on cell performance.<br /

Synergistic corrosion inhibition of mild steel in aqueous chloride solutions by an imidazolinium carboxylate salt

Mild steel infrastructure is constantly under corrosive attack in most environmental and industrial conditions. There is an ongoing search for environmentally friendly, highly effective inhibitor compounds that can provide a protective action in situations ranging from the marine environment to oil and gas pipelines. In this work an organic salt comprising a protic imidazolinium cation and a 4-hydroxycinnamate anion has been shown to produce a synergistic corrosion inhibition effect for mild steel in 0.01 M NaCl aqueous solutions under acidic, neutral, and basic conditions; an important and unusual phenomenon for one compound to support inhibition across a range of pH conditions. Significantly, the individual components of this compound do not inhibit as effectively at equivalent concentrations, particularly at pH 2. Immersion studies show the efficacy of these inhibitors in stifling corrosion as observed from optical, SEM, and profilometry experiments. The mechanism of inhibition appears to be dominated by anodic behavior where dissolution of the steel, and in particular the pitting process, is stifled. FTIR spectroscopy provides confirmation of a protective interfacial layer, with the observation of interactions between the steel surface and 4-hydroxycinnamate

Effect of diffusion-layer morphology on the performance of polymer electrolyte fuel cells operating at atmospheric pressure

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AAV Capsid Proteins Fused with SARS-CoV-2 RBD or RBM: Expression in E. coli, In-Vitro Assembly, and Characterization

Le DT, Behrsing O, Rothschild C, Radukic MT, Arndt KM, Mueller KM. AAV Capsid Proteins Fused with SARS-CoV-2 RBD or RBM: Expression in E. coli, In-Vitro Assembly, and Characterization. In: 24th Annual Meeting of the American Society of Gene &amp; Cell Therapy. Complete listing of the accepted abstracts for presentation at ASGCT's 24th Annual Meeting, May 11-May 14, 2021. Molecular Therapy . Vol 29. Cambridge: Cell Press; 2021: 357