@article{lin_ji_medford_shi_krause_zhang_2011, title={Electrocatalytic interaction of nano-engineered palladium on carbon nanofibers with hydrogen peroxide and beta-NADH}, volume={15}, ISSN={["1432-8488"]}, url={https://publons.com/publon/3117879/}, DOI={10.1007/s10008-010-1218-2}, number={6}, journal={JOURNAL OF SOLID STATE ELECTROCHEMISTRY}, author={Lin, Zhan and Ji, Liwen and Medford, Andrew J. and Shi, Quan and Krause, Wendy E. and Zhang, Xiangwu}, year={2011}, month={Jun}, pages={1287–1294} } @article{ji_lin_guo_medford_zhang_2010, title={Assembly of Carbon-SnO2 Core-Sheath Composite Nanofibers for Superior Lithium Storage}, volume={16}, ISSN={["1521-3765"]}, url={https://publons.com/publon/6540086/}, DOI={10.1002/chem.201001564}, abstractNote={Protective coating: Carbon-SnO(2) core-sheath composite nanofibers are synthesized through the creative combination of electrospinning and electrodeposition processes (see figure). They display excellent electrochemical performance when directly used as binder-free anodes for rechargeable lithium ion batteries.}, number={38}, journal={CHEMISTRY-A EUROPEAN JOURNAL}, author={Ji, Liwen and Lin, Zhan and Guo, Bingkun and Medford, Andrew J. and Zhang, Xiangwu}, year={2010}, pages={11543–11548} } @article{ji_yao_toprakci_lin_liang_shi_medford_millns_zhang_2010, title={Fabrication of carbon nanofiber-driven electrodes from electrospun polyacrylonitrile/polypyrrole bicomponents for high-performance rechargeable lithium-ion batteries}, volume={195}, ISSN={["1873-2755"]}, url={https://publons.com/publon/674401/}, DOI={10.1016/j.jpowsour.2009.10.021}, abstractNote={Carbon nanofibers were prepared through electrospinning a blend solution of polyacrylonitrile and polypyrrole, followed by carbonization at 700 °C. Structural features of electrospun polyacrylonitrile/polypyrrole bicomponent nanofibers and their corresponding carbon nanofibers were characterized using scanning electron microscopy, differential scanning calorimeter, thermo-gravimetric analysis, wide-angle X-ray diffraction, and Raman spectroscopy. It was found that intermolecular interactions are formed between two different polymers, which influence the thermal properties of electrospun bicomponent nanofibers. In addition, with the increase of polypyrrole concentration, the resultant carbon nanofibers exhibit increasing disordered structure. These carbon nanofibers were used as anodes for rechargeable lithium-ion batteries without adding any polymer binder or conductive material and they display high reversible capacity, improved cycle performance, relatively good rate capability, and clear fibrous morphology even after 50 charge/discharge cycles. The improved electrochemical performance of these carbon nanofibers can be attributed to their unusual surface properties and unique structural features, which amplify both surface area and extensive intermingling between electrode and electrolyte phases over small length scales, thereby leading to fast kinetics and short pathways for both Li ions and electrons.}, number={7}, journal={JOURNAL OF POWER SOURCES}, author={Ji, Liwen and Yao, Yingfang and Toprakci, Ozan and Lin, Zhan and Liang, Yinzheng and Shi, Quan and Medford, Andrew J. and Millns, Christopher R. and Zhang, Xiangwu}, year={2010}, month={Apr}, pages={2050–2056} } @article{ji_lin_zhou_shi_toprakci_medford_millns_zhang_2010, title={Formation and electrochemical performance of copper/carbon composite nanofibers}, volume={55}, ISSN={["1873-3859"]}, url={https://publons.com/publon/674402/}, DOI={10.1016/j.electacta.2009.10.033}, abstractNote={Copper-loaded carbon nanofibers are fabricated by thermally treating electrospun Cu(CH3COO)2/polyacrylonitrile nanofibers and utilized as an energy-storage material for rechargeable lithium–ion batteries. These composite nanofibers deliver more than 400 mA g−1 reversible capacities at 50 and 100 mA g−1 current densities and also maintain clear fibrous morphology and good structural integrity after 50 charge/discharge cycles. The relatively high capacity and good cycling performance of these composite nanofibers, stemmed from the integrated combination of metallic copper and disordered carbon as well as their unique textures and surface properties, make them a promising electrode candidate for next-generation lithium–ion batteries.}, number={5}, journal={ELECTROCHIMICA ACTA}, author={Ji, Liwen and Lin, Zhan and Zhou, Rui and Shi, Quan and Toprakci, Ozan and Medford, Andrew J. and Millns, Christopher R. and Zhang, Xiangwu}, year={2010}, month={Feb}, pages={1605–1611} } @article{ji_jung_medford_zhang_2009, title={Electrospun polyacrylonitrile fibers with dispersed Si nanoparticles and their electrochemical behaviors after carbonization}, volume={19}, ISSN={["1364-5501"]}, url={https://publons.com/publon/7178352/}, DOI={10.1039/b903165k}, abstractNote={Si nanoparticle-incorporated polyacrylonitrile (PAN) fibers are prepared using the electrospinning method and Si-filled carbon (Si/C) fibers are obtained by the subsequent heat treatment of these Si/PAN fibers. Their microstructures are characterized by various analytical techniques. It is found that Si nanoparticles are distributed both inside and on the surface of PAN fibers and this is preserved after the formation of Si/C fibers. The crystal structure characterization indicates that, in Si/C fibers, Si nanoparticles exist in a crystalline state while carbon is in a predominantly amorphous or disordered form. Si/C fibers show high reversible capacity and good capacity retention when tested as anodes in lithium ion batteries (LIBs). The excellent electrochemical performance of these fibers can be ascribed to the combined contributions of carbon matrices and Si nanoparticles, and the favorable textures and surface properties of the Si/C fibers.}, number={28}, journal={JOURNAL OF MATERIALS CHEMISTRY}, author={Ji, Liwen and Jung, Kyung-Hye and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, month={Jul}, pages={4992–4997} } @article{ji_medford_zhang_2009, title={Electrospun polyacrylonitrile/zinc chloride composite nanofibers and their response to hydrogen sulfide}, volume={50}, ISSN={["1873-2291"]}, url={https://publons.com/publon/7178383/}, DOI={10.1016/j.polymer.2008.11.016}, abstractNote={In this work, we explore the electrospinning of polyacrylonitrile (PAN)/zinc(II) chloride (ZnCl2) composite nanofibers and the response of these nanofibers to hydrogen sulfide (H2S). Solution properties, including surface tension, viscosity, and conductivity, have been measured and integrated with the results of a variety of other analytical techniques to investigate the effects of ZnCl2 salt on the structure and thermal properties of electrospun nanofibers. It is found that the addition of ZnCl2 reduces the diameter and inhibits the instantaneous cyclization reaction of these nanofibers. Additionally, exposing PAN/ZnCl2 fibers to H2S leads to the formation of PAN/zinc sulfide (ZnS) composite nanofibers that contain ZnS crystals on the surface. These results indicate that PAN/ZnCl2 composite nanofibers could find applications in H2S sensing and removal, or as precursors for semiconductor ZnS-coated polymer nanofibers.}, number={2}, journal={POLYMER}, author={Ji, Liwen and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, month={Jan}, pages={605–612} } @article{ji_medford_zhang_2009, title={Fabrication of Carbon Fibers with Nanoporous Morphologies from Electrospun Polyacrylonitrile/Poly(L-lactide) Blends}, volume={47}, ISSN={["1099-0488"]}, url={https://publons.com/publon/7178332/}, DOI={10.1002/polb.21654}, abstractNote={Abstract}, number={5}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Ji, Liwen and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, month={Mar}, pages={493–503} } @article{ji_lin_medford_zhang_2009, title={In-Situ Encapsulation of Nickel Particles in Electrospun Carbon Nanofibers and the Resultant Electrochemical Performance}, volume={15}, ISSN={["1521-3765"]}, url={https://publons.com/publon/6540091/}, DOI={10.1002/chem.200902012}, abstractNote={Loaded nanofibers: Ni nanoparticle-loaded carbon nanofibers, which exhibit high reversible lithium-storage capacity, excellent cycling performance, and remarkably enhanced rate capability, are fabricated by using the electrospinning technique and the subsequent stabilization and carbonization processes (see figure). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.}, number={41}, journal={CHEMISTRY-A EUROPEAN JOURNAL}, author={Ji, Liwen and Lin, Zhan and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, pages={10718–10722} } @article{ji_lin_medford_zhang_2009, title={Porous carbon nanofibers from electrospun polyacrylonitrile/SiO2 composites as an energy storage material}, volume={47}, ISSN={["1873-3891"]}, url={https://publons.com/publon/6540062/}, DOI={10.1016/j.carbon.2009.08.002}, abstractNote={Porous carbon nanofibers with large accessible surface areas and well-developed pore structures were prepared by electrospinning and subsequent thermal and chemical treatments. They were directly used as anodes in lithium-ion batteries without adding any non-active materials such as polymer binders or electronic conductors. The electrochemical performance results show that porous carbon nanofiber anodes have improved lithium-ion storage ability, enhanced charge–discharge kinetics, and better cyclic stability compared with non-porous counterparts. The unique structures and properties of these materials make them excellent candidates for use as anodes in high-performance rechargeable lithium-ion batteries.}, number={14}, journal={CARBON}, author={Ji, Liwen and Lin, Zhan and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, month={Nov}, pages={3346–3354} } @article{ji_medford_zhang_2009, title={Porous carbon nanofibers loaded with manganese oxide particles: Formation mechanism and electrochemical performance as energy-storage materials}, volume={19}, ISSN={["1364-5501"]}, url={https://publons.com/publon/7178331/}, DOI={10.1039/b905755b}, abstractNote={Mn oxide-loaded porous carbon nanofibers are prepared by electrospinning polyacrylonitrile nanofibers containing different amounts of Mn(CH3COO)2, followed by thermal treatments in different environments. It is found that the manganese salt may transform into γ-Mn(OOH)2 or other Mn compounds during the thermal oxidation in air environment, while further thermal treatment in argon atmosphere results in MnO and Mn3O4 particles confined to a nanoporous carbon structure. Surface morphology, thermal properties and crystal structures are characterized using various analytical techniques to provide insight into the formation mechanism of the porous structure. These Mn oxide-loaded porous carbon composite nanofibers exhibit high reversible capacity, improved cycling performance, and elevated rate capability even at high current rates when used as anodes for rechargeable lithium-ion batteries without adding any polymer binder or electronic conductor.}, number={31}, journal={JOURNAL OF MATERIALS CHEMISTRY}, author={Ji, Liwen and Medford, Andrew J. and Zhang, Xiangwu}, year={2009}, pages={5593–5601} }