ORCID Profile
0000-0003-2809-0338
Current Organisation
Danish Clinical Registries
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Publisher: Elsevier BV
Date: 09-2017
Publisher: American Chemical Society (ACS)
Date: 27-04-2020
Publisher: Springer Science and Business Media LLC
Date: 06-2017
Publisher: University of Queensland Library
Date: 2023
DOI: 10.14264/13DE9B6
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA11178E
Abstract: The GS filler provides stronger enhancement of the thermal conductivity (up to 2.06 W m −1 K −1 ) in comparison with SF and CNTs, which is approximately 10-fold enhancement in comparison to that of the neat PVDF.
Publisher: Elsevier BV
Date: 02-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA03636J
Abstract: This review provides an in-depth analysis of essential role of electrode wettability in improving CO 2 electrochemical reduction.
Publisher: Wiley
Date: 20-05-2021
Abstract: Interactions of electrolyte ions at electrocatalyst surfaces influence the selectivity of electrochemical CO 2 reduction (CO 2 R) to chemical feedstocks like CO. We investigated the effects of anion type in aqueous choline halide solutions (ChCl, ChBr, and ChI) on the selectivity of CO 2 R to CO over an Ag foil cathode. Using an H‐type cell, we observed that halide‐specific adsorption at the Ag surface limits CO faradaic efficiency (FE CO ) at potentials more positive than −1.0 V vs. reversible hydrogen electrode (RHE). At these conditions, FE CO increased from I − Br − Cl − , that is, in the opposite order to the strength of specific adsorption of the halide ions (Cl − Br − I − ). At potentials of −1.0 to −1.3 V vs. RHE, restructuring of the Ag surface in ChI and ChCl via dissolution and re‐electrodeposition led to more CO‐selective Ag facets ([220], [311], and [222]) than in ChBr. This mechanism allowed very high faradaic efficiencies for CO of 97±2 % in ChI and 94±2 % in ChCl to be achieved simultaneously with high current densities at −1.3 V vs. RHE. We also demonstrate that high selectivity to CO (FE CO %) in ChCl (at −0.75±0.06 Vvs. RHE) and ChI (at −0.78±0.17 V vs. RHE) could be achieved at a current density of 150 mA cm −2 in a continuous flow‐cell electrolyser with Ag nanoparticles on a commercial gas diffusion electrode. This study provides new insights to understand the interactions of anions with catalysts and offers a new method to modify electrocatalyst surfaces.
Publisher: American Chemical Society (ACS)
Date: 31-01-2023
DOI: 10.26434/CHEMRXIV-2023-45T1X
Abstract: We report the influence of ionomer and catalyst dispersion solvent interaction on the structure and ionomer film wettability in copper (Cu) catalyst layers (CLs) in a gas diffusion electrode (GDE). Our results show that acetone and methanol dispersion solvents interact differently with the perfluorinated sulfonic acid (PFSA) ionomer Aquivion, which is composed of hydrophobic backbones and hydrophilic ionic heads. Acetone solvates more with the hydrophobic backbones in the PFSA compared to methanol. Consequently, the ionomer film fabricated from casting Aquivion and acetone mixture on a flat surface is more continuous and hydrophobic than its methanol counterpart. Such ionomer-solvent interaction also leads to a more uniform and flooding-tolerant GDE when producing the copper catalyst layer with acetone (acetone-CL) compared to methanol (methanol-CL). As a result, acetone-CL yields higher selectivity to C2+ products at high current density, up to 29 % greater than methanol-CL at 500 mA cm-2. Ethylene is the primary product for both CLs, reaching 47.5 4.0 % and 43.9 5.5 % at 300 mA cm-2 for acetone-CL and methanol-CL, respectively. The improvement in C2+ product selectivity for the acetone-CL is attributed to the CLs high resistance against flooding at current densities above 300 mA cm-2. Our findings offer a new strategy to advance CO2 electrolysis by manipulating solvent-ionomer interactions.
Publisher: Elsevier BV
Date: 06-2018
Publisher: No publisher found
Date: 2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TC90056B
Abstract: Correction for ‘High quality graphene films with a clean surface prepared by an UV/ozone assisted transfer process’ by Hongyan Sun et al. , J. Mater. Chem. C , 2017, 5 , 1880–1884.
Publisher: American Chemical Society (ACS)
Date: 05-08-2022
Publisher: SAGE Publications
Date: 12-10-2016
Abstract: Emerging multinational enterprises (EMNEs) often engage in strategic-asset-seeking foreign direct investment (FDI) for competitive catch-up. This study explores the linkages between an EMNE’s competitive scenario consisting of a configuration of its awareness-motivation-capability (AMC) conditions and the comparative institutional advantages of its strategic-asset-seeking destination. Our configurational analyses of Chinese FDIs in the technology-intensive industries of OECD countries reveal a taxonomy of four distinct asset-seeking strategies of EMNEs. Our findings shed novel insights into the strategic variations within EMNEs based on a theoretically and methodologically extended AMC framework. This study also extends the varieties of capitalism literature by addressing the implications of comparative institutional advantages for foreign entrants, rather than domestic incumbent firms.
Publisher: Wiley
Date: 18-06-2021
Abstract: Electrochemical recovery of the cobalt in deep eutectic solvent shows its promise in recycling and recovery of valuable elements from the spent lithium‐ion battery due to its high selectivity and minimal environmental impacts. This work unveiled the roles of the substrates, applied potentials, and operating temperatures on the performance of cobalt electrochemical recovery in a deep eutectic choline chloride+urea solvent. The solvent contains cobalt and lithium ions extracted from lithium cobalt oxides – 3an essential lithium‐ion battery cathode material. Our results highlight that the substrate predetermines the cobalt recovery modes via substrate–cobalt interactions, which could be predicted by the cobalt surface segregation energies and crystallographic misfits. We also show that a moderate cathode potential under −1.0 V vs. silver quasi‐reference electrode at 94–104 °C is essential to ensure a selective cobalt recovery at an optimal rate. We also found that the stainless‐steel mesh is an optimal substrate for cobalt recovery due to its relatively high selectivity, fast recovery rate, and easy cobalt collection. Our work provides new insights on metal recovery in deep eutectic solvents and offers a new avenue to control the metal electrodeposition modes via modulation of substrate compositions and crystal structures.
Publisher: American Chemical Society (ACS)
Date: 12-2021
DOI: 10.26434/CHEMRXIV-2021-7CHQX
Abstract: Electrochemical conversion of CO2 to chemicals and fuels can potentially play a role in reducing CO2 emissions from industrial processes and providing non-fossil fuel routes to important chemical feedstocks. Most of the recent research on electrocatalysts for CO2 reduction (CO2R) focuses on achieving maximum selectivity for desired products at the highest possible current density. This approach assumes that maximising current density leads to the lowest cost of CO2R (e.g. $·kg-1 CO2 converted) because it requires the lowest catalyst loadings and electrode area per kg of CO2 treated and thus minimising the electrolyser equipment cost. Using a techno-economic analysis (TEA) model with experimental data from a two-cell vapor fed electrolyser, we show this assumption is not valid for CO2 conversion to CO if the process model accounts for relationships between current density, selectivity, cell voltage, ohmic losses, and product separation costs. Instead, our model predicts the lowest CO production costs at current densities from 500 – 700 A·m-2. At current densities above 1000 A·m-2, growing ohmic losses in the electrolyser lead to increasing power costs that become much larger than any capital savings related to reduced electrode area at the higher current density. Further, we investigate different opportunities that could bring down the CO production cost, however, in all the cases, the lowest CO production cost was found at current densities between 600 – 1400 A·m-2. This work also provides insights that can help identify feasible design spaces for both catalysts and electrolysers to develop CO2 conversion technologies that could soon compete on a cost basis with the natural reforming technologies to produce CO (0.60 $·kg-1 market price).
Publisher: Elsevier BV
Date: 2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TC01464G
Abstract: A novel and environmentally friendly vacuum-assisted infiltration method is developed to construct three-dimensional thermal transport channels like highways in polymer composites.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7RA11574A
Abstract: We report a facile method to prepare cigarette filter-templated graphene/epoxy composites with excellent thermal transport performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0RE00396D
Abstract: Catalyst dimensionality is essential for the reactivity and selectivity of gas-diffusion electrodes for CO 2 electrochemical reduction to produce formate.
Publisher: Elsevier BV
Date: 05-2022
Publisher: Springer Science and Business Media LLC
Date: 24-01-2018
DOI: 10.1038/S41598-018-19945-3
Abstract: A strategy was reported to prepare boron nitride nanosheets (BNNSs) by a molten hydroxide assisted liquid exfoliation from hexagonal boron nitride (h-BN) powder. BNNSs with an average thickness of 3 nm were obtained by a facile, low-cost, and scalable exfoliation method. Highly thermally conductive polyimide (PI) composite films with BNNSs filler were prepared by solution-casting process. The in-plane thermal conductivity of PI composite films with 7 wt% BNNSs is up to 2.95 W/mK, which increased by 1,080% compared to the neat PI. In contrast, the out-of plane thermal conductivity of the composites is 0.44 W/mK, with an increase by only 76%. The high anisotropy of thermal conductivity was verified to be due to the high alignment of the BNNSs. The PI/BNNSs composite films are attractive for the thermal management applications in the field of next-generation electronic devices.
Publisher: Elsevier BV
Date: 02-2021
Publisher: American Chemical Society (ACS)
Date: 08-2022
Abstract: We report a new strategy to improve the reactivity and durability of a membrane electrode assembly (MEA)-type electrolyzer for CO
Publisher: American Chemical Society (ACS)
Date: 31-10-2019
Abstract: With the minimization and higher power of electronic devices, materials with effective heat dissipation and high electrical insulation have attracted relentless interest. Especially, highly thermally conductive, highly electrically insulating but low filler content of polymer-based composites are desirable. Herein, a facile and eco-friendly cotton candy-templated method (CTM) to construct three-dimensional heat transport pathways inside epoxy resin is reported. The fabricated Al
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8RA01470A
Abstract: Epoxy composites with ZnO powders characterized by different structures as inclusion are prepared and their thermal properties are studied.
Publisher: Elsevier BV
Date: 08-2020
No related grants have been discovered for Yuming Wu.