Index Catalog // ScholarsArchive@OSU

Creator:: Xing, Zhenyu, Wang, Bao, Gao, Wenyang, Pan, Changqing, Halsted, Joshua K., Chong, Elliot S., Lu, Jun, Wang, Xingfeng, Luo, Wei, Chang, Chih-Hung, Wen, Youhai, Ma, Shengqian, Amine, Khalil, and Ji, Xiulei
Abstract:: Converting CO2 to valuable materials is attractive.Herein, we report using simple metallothermic reactions to reduce atmospheric CO2 to dense nanoporous graphene. By using a Zn/Mg mixture as a reductant, the resulted nanoporous graphene exhibits highly desirable properties: high specific surface area of 1900 m2/g, a great conductivity of 1050 S/m...
Resource Type:: Article

Creator:: Li, Xiaolin, Yan, Pengfei, Arey, Bruce W., Luo, Wei, Ji, Xiulei, Wang, Chongmin, Liu, Jun, and Zhang, Ji-Guang
Abstract:: Porous silicon prepared by low-cost and scalable magnesiothermic reactions is a promising anode material for Li-ion batteries; yet, retaining good cycling stability for such materials in electrodes of practical loading remains a challenge. Here, we engineered the nanoporous silicon from a modified magnesiothermic reaction by controlled surface oxidization forming a...
Resource Type:: Article

Creator:: Luo, Wei, Bommier, Clement, Jian, Zelang, Li, Xin, Carter, Rich, Vail, Sean, Lu, Yuhao, Lee, Jong-Jan, and Ji, Xiulei
Abstract:: Na-ion batteries are emerging as one of the most promising energy storage technologies, particularly for grid-level applications. Among anode candidate materials, hard carbon is very attractive due to its high capacity and low cost. However, hard carbon anodes often suffer a low first-cycle Coulombic efficiency and fast capacity fading. In...
Resource Type:: Article

Creator:: Raju, Vadivukarasi, Rains, Jordan, Gates, Cooper, Luo, Wei, Wang, Xingfeng, Stickle, William F., Stucky, Galen D., and Ji, Xiulei
Abstract:: We, for the first time, demonstrate that orthorhombic V₂O₅ can exhibit superior electrochemical performance in sodium ion batteries when uniformly coated inside nanoporous carbon. The encapsulated V₂O₅ shows a specific capacity as high as 276 mAh/g, while the whole nanocomposite exhibits a capacity of 170 mAh/g. The V₂O₅/C composite was...
Resource Type:: Article

Creator:: Raju, Vadivukarasi, Wang, Xingfeng, Luo, Wei, and Ji, Xiulei
Abstract:: We introduce a novel ambient hydrolysis deposition (AHD) methodology that, for the first time, employs sequential water adsorption followed by a hydrolysis reaction to infiltrate tiny SnO2₂ particles inside nanopores of mesoporous carbon in a conformal and controllable manner. The empty space in the SnO2₂/C composites can be adjusted by...
Resource Type:: Article

Creator:: Bommier, Clement, Luo, Wei, Gao, Wen-Yang, Greaney, Alex, Ma, Shengqian, and Ji, Xiulei
Abstract:: We report an inverse relationship between measurable porosity values and reversible capacity from sucrose-derived hard carbon as an anode for sodium-ion batteries (SIBs). Materials with low measureable pore volumes and surface areas obtained through N₂ sorption yield higher reversible capacities. Conversely, increasing measurable porosity and specific surface area leads to...
Resource Type:: Article

Creator:: Luo, Wei, Lorger, Simon, Wang, Bao, Bommier, Clement, and Ji, Xiulei
Abstract:: We demonstrate a novel synthetic route to fabricate a one-dimensional peapod-like Sb@C structure with disperse Sb submicron-particles encapsulated in carbon submicron-tubes. The synthetic route may well serve as a general methodology for fabricating carbon/metallic fine structures by thermally reducing their carbon-coated metal oxide composites.
Resource Type:: Article

Creator:: Wang, Xingfeng, Raju, Vadivukarasi, Luo, Wei, Wang, Bao, Stickle, William F., and Ji, Xiulei
Abstract:: Despite the considerable advances of deposition technologies, it remains a significant challenge to form conformal deposition on surface of nanoporous carbons. Here, we introduce a new ambient hydrolysis deposition method that employs and controls pre-adsorbed water vapor on nanoporous carbons to define the deposition of TiO₂. We converted the deposited...
Resource Type:: Article

Creator:: Luo, Wei, Wang, Bao, Wang, Xingfeng, Stickle, William F., and Ji, Xiulei
Abstract:: We, for the first time, employ magnesiothermic reaction to convert microwave-irradiated graphite oxide to pure graphene. The magnesiothermic reaction raises the carbon to oxygen atomic ratio from 22.2 to 165.7 and maintains a high surface area. The new strategy demonstrates an efficient method for obtaining highly pure graphene materials.
Resource Type:: Article

Creator:: Luo, Wei, Wang, Xingfeng, Meyers, Colin, Wannenmacher, Nick, Sirisaksoontorn, Weekit, Lerner, Michael M., and Ji, Xiulei
Abstract:: Magnesiothermic reduction can directly convert SiO₂ into Si nanostructures. Despite intense efforts, efficient fabrication of highly nanoporous silicon by Mg still remains a significant challenge due to the exothermic reaction nature. By employing table salt (NaCl) as a heat scavenger for the magnesiothermic reduction, we demonstrate an effective route to...
Resource Type:: Article

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