@article{li_xu_yao_xue_yanilmaz_lee_zhang_2014, title={Coaxial electrospun Si/C-C core-shell composite nanofibers as binder-free anodes for lithium-ion batteries}, volume={258}, ISSN={["1872-7689"]}, url={https://publons.com/publon/11754002/}, DOI={10.1016/j.ssi.2014.02.003}, abstractNote={Si/C–C core–shell nanofiber structure was designed by dual nozzle coaxial electrospinning and subsequent carbonization. This core–shell nanofiber structure has Si/C composite as the core and carbon as the shell. Used as an anode in lithium-ion batteries, the carbon shell can help buffer the large volume expansion/contraction of the Si/C core during charge/discharge and restrain the capacity fading caused by the mechanical failure of the active material. Results showed that after 50 cycles, the discharge capacity of Si/C–C core–shell composite nanofibers was 63% higher than that of Si/C composite nanofibers and the capacity retention increased from 48.6 to 72.4%. It is, therefore, demonstrated that Si/C–C core–shell composite nanofibers are promising anode material with large reversible capacity and good cycling stability.}, journal={SOLID STATE IONICS}, author={Li, Ying and Xu, Guanjie and Yao, Yingfang and Xue, Leigang and Yanilmaz, Meltem and Lee, Hun and Zhang, Xiangwu}, year={2014}, month={May}, pages={67–73} } @article{li_xu_xue_zhang_yao_lu_toprakci_zhang_2013, title={Enhanced Rate Capability by Employing Carbon Nanotube-Loaded Electrospun Si/C Composite Nanofibers As Binder-Free Anodes}, volume={160}, ISSN={["1945-7111"]}, url={https://publons.com/publon/674380/}, DOI={10.1149/2.031304jes}, abstractNote={Si/C and Si/carbon nanotube (CNT)/C composite nanofibers were prepared by electrospinning and carbonization. The carbon nanofiber matrix can accommodate the volume change of Si nanoparticles and provide continuous pathways for efficient charge transport along the fiber axis. CNTs can improve the electronic conductivity and electrochemical performance of the composite nanofiber anodes. Results showed that many different types of connections between CNTs, Si nanoparticles and carbon matrix were formed. At a high current density of 300 mA g−1, after 30 cycles, the capacity of Si/CNT/C composite nanofiber anode was 44.3% higher than the anode without CNT and the C-rate performance of Si/CNT/C composite nanofiber anode was also superior to that of Si/C anode. It is, therefore, demonstrated that Si/CNT/C nanofibers are promising anode material with large capacities, good cycling stability, and good rate capability.}, number={3}, journal={JOURNAL OF THE ELECTROCHEMICAL SOCIETY}, author={Li, Ying and Xu, Guanjie and Xue, Leigang and Zhang, Shu and Yao, Yingfang and Lu, Yao and Toprakci, Ozan and Zhang, Xiangwu}, year={2013}, pages={A528–A534} } @article{li_xu_yao_xue_zhang_lu_toprakci_zhang_2013, title={Improvement of cyclability of silicon-containing carbon nanofiber anodes for lithium-ion batteries by employing succinic anhydride as an electrolyte additive}, volume={17}, ISSN={["1433-0768"]}, url={https://publons.com/publon/674383/}, DOI={10.1007/s10008-013-2005-7}, number={5}, journal={JOURNAL OF SOLID STATE ELECTROCHEMISTRY}, author={Li, Ying and Xu, Guanjie and Yao, Yingfang and Xue, Leigang and Zhang, Shu and Lu, Yao and Toprakci, Ozan and Zhang, Xiangwu}, year={2013}, month={May}, pages={1393–1399} } @article{li_lin_xu_yao_zhang_toprakci_alcoutlabi_zhang_2012, title={Electrochemical Performance of Carbon Nanofibers Containing an Enhanced Dispersion of Silicon Nanoparticles for Lithium-Ion Batteries by Employing Surfactants}, volume={1}, ISSN={["2162-8734"]}, url={https://publons.com/publon/674390/}, DOI={10.1149/2.002202eel}, abstractNote={Si/C composite nanofibers were prepared by electrospinning and carbonization. Two surfactants: cetyl trimethyl ammonium bromide (CTAB) and sodium dodecanoate (SD), were used to improve the dispersion of Si nanoparticles and the electrochemical performance. Results show that after 50 cycles, the discharge capacity of Si/C nanofibers does not have significant change after the addition of CTAB surfactant, however, the discharge capacity of Si/C nanofibers with SD surfactant is more than 20% higher than that without surfactant. It is demonstrated that employing SD surfactant is a simple and effective way to obtain Si/C nanofibers with large capacities and good cycling stability.}, number={2}, journal={ECS ELECTROCHEMISTRY LETTERS}, author={Li, Ying and Lin, Zhan and Xu, Guanjie and Yao, Yingfang and Zhang, Shu and Toprakci, Ozan and Alcoutlabi, Mataz and Zhang, Xiangwu}, year={2012}, pages={A31–A33} } @article{ji_lin_alcoutlabi_toprakci_yao_xu_li_zhang_2012, title={Electrospun carbon nanofibers decorated with various amounts of electrochemically-inert nickel nanoparticles for use as high-performance energy storage materials}, volume={2}, ISSN={["2046-2069"]}, url={https://publons.com/publon/674391/}, DOI={10.1039/c1ra00676b}, abstractNote={Carbon nanofibers decorated with various amounts of electrochemically-inert metallic nickel nanoparticles are synthesized through electrospinning and carbonization processes. The morphology and composition of Ni nanoparticles in carbon nanofibers are controlled by preparing different nanofiber precursors. The lithium-ion battery performance evaluations indicated that the content of electrochemically-inert Ni nanoparticles in carbon nanofibers has a great influence on the final electrochemical performance. For example, at certain Ni contents, these composite nanofibers display excellent electrochemical performance, such as high reversible capacities, good capacity retention, and excellent rate performance, when directly used as binder-free anodes for rechargeable lithium-ion batteries. However, when the Ni content is too low or too high, the corresponding electrodes show low reversible capacities although they still have good reversibility and rate performance.}, number={1}, journal={RSC ADVANCES}, author={Ji, Liwen and Lin, Zhan and Alcoutlabi, Mataz and Toprakci, Ozan and Yao, Yingfang and Xu, Guanjie and Li, Shuli and Zhang, Xiangwu}, year={2012}, pages={192–198} } @article{ji_toprakci_alcoutlabi_yao_li_zhang_guo_lin_zhang_2012, title={alpha-Fe2O3 Nanoparticle-Loaded Carbon Nanofibers as Stable and High-Capacity Anodes for Rechargeable Lithium-Ion Batteries}, volume={4}, ISSN={["1944-8244"]}, url={https://publons.com/publon/674393/}, DOI={10.1021/am300333s}, abstractNote={α-Fe(2)O(3) nanoparticle-loaded carbon nanofiber composites were fabricated via electrospinning FeCl(3)·6H(2)O salt-polyacrylonitrile precursors in N,N-dimethylformamide solvent and the subsequent carbonization in inert gas. Scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and elemental analysis were used to study the morphology and composition of α-Fe(2)O(3)-carbon nanofiber composites. It was indicated that α-Fe(2)O(3) nanoparticles with an average size of about 20 nm have a homogeneous dispersion along the carbon nanofiber surface. The resultant α-Fe(2)O(3)-carbon nanofiber composites were used directly as the anode material in rechargeable lithium half cells, and their electrochemical performance was evaluated. The results indicated that these α-Fe(2)O(3)-carbon nanofiber composites have high reversible capacity, good capacity retention, and acceptable rate capability when used as anode materials for rechargeable lithium-ion batteries.}, number={5}, journal={ACS APPLIED MATERIALS & INTERFACES}, publisher={American Chemical Society (ACS)}, author={Ji, Liwen and Toprakci, Ozan and Alcoutlabi, Mataz and Yao, Yingfang and Li, Ying and Zhang, Shu and Guo, Bingkun and Lin, Zhan and Zhang, Xiangwu}, year={2012}, month={May}, pages={2672–2679} } @article{guo_li_yao_lin_ji_xu_liang_shi_zhang_2011, title={Electrospun Li4Ti5O12/C composites for lithium-ion batteries with high rate performance}, volume={204}, ISSN={["1872-7689"]}, url={https://publons.com/publon/3117890/}, DOI={10.1016/j.ssi.2011.10.019}, abstractNote={Two types of Li4Ti5O12/C composites were synthesized through the electrospinning method. The first composite consists of Li4Ti5O12 nanoparticles and aggregates coated by carbon and connected by carbon nanofibers. The second composite is constructed solely by Li4Ti5O12/C fibers. These two composites are denoted as Li4Ti5O12/C particles/fibers and Li4Ti5O12/C fibers, respectively. It is found that both composites show higher reversible capacities and better rate performance than commercial Li4Ti5O12 nanoparticles. Comparing the two electrospun composites, Li4Ti5O12/C fibers exhibit higher reversible capacity, greater rate capacity, and smaller electrode polarization, indicating that Li4Ti5O12/C fibers have better kinetics than Li4Ti5O12/C particles/fibers due to the elimination of Li4Ti5O12 aggregates and the formation of carbon-based fiber structure.}, journal={SOLID STATE IONICS}, author={Guo, Bingkun and Li, Ying and Yao, Yingfang and Lin, Zhan and Ji, Liwen and Xu, Guangjie and Liang, Yinzheng and Shi, Quan and Zhang, Xiangwu}, year={2011}, month={Dec}, pages={61–65} } @article{yao_guo_ji_jung_lin_alcoutlabi_hamouda_zhang_2011, title={Highly proton conductive electrolyte membranes: Fiber-induced long-range ionic channels}, volume={13}, ISSN={["1388-2481"]}, url={https://publons.com/publon/6540067/}, DOI={10.1016/j.elecom.2011.06.028}, abstractNote={Novel conductive inorganic fiber/polymer hybrid proton exchange membranes (PEMs) were obtained by taking advantage of sulfated zirconia (S-ZrO2) fibers made by electrospinning and post-electrospinning processes. Induced by electrospun inorganic fibers, long-range ionic channels were formed by agglomerating functional groups, which served as continuous hopping pathways for protons and significantly improved the proton conductivity of PEMs.}, number={9}, journal={ELECTROCHEMISTRY COMMUNICATIONS}, author={Yao, Yingfang and Guo, Bingkun and Ji, Liwen and Jung, Kyung-Hye and Lin, Zhan and Alcoutlabi, Mataz and Hamouda, Hechmi and Zhang, Xiangwu}, year={2011}, month={Sep}, pages={1005–1008} } @article{liang_ji_guo_lin_yao_li_alcoutlabi_qiu_zhang_2011, title={Preparation and electrochemical characterization of ionic-conducting lithium lanthanum titanate oxide/polyacrylonitrile submicron composite fiber-based lithium-ion battery separators}, volume={196}, ISSN={["1873-2755"]}, url={https://publons.com/publon/6540087/}, DOI={10.1016/j.jpowsour.2010.06.088}, abstractNote={Lithium lanthanum titanate oxide (LLTO)/polyacrylonitrile (PAN) submicron composite fiber-based membranes were prepared by electrospinning dispersions of LLTO ceramic particles in PAN solutions. These ionic-conducting LLTO/PAN composite fiber-based membranes can be directly used as lithium-ion battery separators due to their unique porous structure. Ionic conductivities were evaluated after soaking the electrospun LLTO/PAN composite fiber-based membranes in a liquid electrolyte, 1 M lithium hexafluorophosphate (LiPF6) in ethylene carbonate (EC)/ethyl methyl carbonate (EMC) (1:1 vol). It was found that, among membranes with various LLTO contents, 15 wt.% LLTO/PAN composite fiber-based membranes provided the highest ionic conductivity, 1.95 × 10−3 S cm−1. Compared with pure PAN fiber membranes, LLTO/PAN composite fiber-based membranes had greater liquid electrolyte uptake, higher electrochemical stability window, and lower interfacial resistance with lithium. In addition, lithium//1 M LiPF6/EC/EMC//lithium iron phosphate cells containing LLTO/PAN composite fiber-based membranes as the separator exhibited high discharge specific capacity of 162 mAh g−1 and good cycling performance at 0.2 C rate at room temperature.}, number={1}, journal={JOURNAL OF POWER SOURCES}, author={Liang, Yinzheng and Ji, Liwen and Guo, Bingkun and Lin, Zhan and Yao, Yingfang and Li, Ying and Alcoutlabi, Mataz and Qiu, Yiping and Zhang, Xiangwu}, year={2011}, month={Jan}, pages={436–441} } @article{yao_ji_lin_li_alcoutlabi_hamouda_zhang_2011, title={Sulfonated Polystyrene Fiber Network-Induced Hybrid Proton Exchange Membranes}, volume={3}, ISSN={["1944-8252"]}, url={https://publons.com/publon/6540072/}, DOI={10.1021/am2009184}, abstractNote={A novel type of hybrid membrane was fabricated by incorporating sulfonated polystyrene (S-PS) electrospun fibers into Nafion for the application in proton exchange membrane fuel cells. With the introduction of S-PS fiber mats, a large amount of sulfonic acid groups in Nafion aggregated onto the interfaces between S-PS fibers and the ionomer matrix, forming continuous pathways for facile proton transport. The resultant hybrid membranes had higher proton conductivities than that of recast Nafion, and the conductivities were controlled by selectively adjusting the fiber diameters. Consequently, hybrid membranes fabricated by ionomers, such as Nafion, incorporated with ionic-conducting nanofibers established a promising strategy for the rational design of high-performance proton exchange membranes.}, number={9}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Yao, Yingfang and Ji, Liwen and Lin, Zhan and Li, Ying and Alcoutlabi, Mataz and Hamouda, Hechmi and Zhang, Xiangwu}, year={2011}, month={Sep}, pages={3732–3737} } @article{yao_lin_li_alcoutlabi_hamouda_zhang_2011, title={Superacidic Electrospun Fiber-Nafion Hybrid Proton Exchange Membranes}, volume={1}, ISSN={["1614-6840"]}, url={https://publons.com/publon/6540073/}, DOI={10.1002/aenm.201100435}, abstractNote={Abstract}, number={6}, journal={ADVANCED ENERGY MATERIALS}, author={Yao, Yingfang and Lin, Zhan and Li, Ying and Alcoutlabi, Mataz and Hamouda, Hechmi and Zhang, Xiangwu}, year={2011}, month={Nov}, pages={1133–1140} } @article{lin_ji_woodroof_yao_krause_zhang_2010, title={Synthesis and Electrocatalysis of Carbon Nanofiber-Supported Platinum by 1-AP Functionalization and Polyol Processing Technique}, volume={114}, ISSN={["1932-7447"]}, url={https://publons.com/publon/6540058/}, DOI={10.1021/jp9096138}, abstractNote={Pt/carbon composite nanofibers were prepared by depositing Pt nanoparticles directly onto electrospun carbon nanofibers using a polyol processing technique. The morphology and size of Pt nanoparticles were controlled by 1-aminopyrene functionalization. The noncovalent functionalization of carbon nanofibers by 1-aminopyrene is simple and can be carried out at ambient temperature without damaging the integrity and electronic structure of the carbon nanofibers. The resulting Pt/carbon composite nanofibers were characterized by running cyclic voltammograms in 0.5 M H2SO4 and 0.125 M CH3OH + 0.2 M H2SO4 solutions. Results show that Pt/carbon composite nanofibers with 1-aminopyrene functionalization have Pt nanoparticles with a smaller size and better distribution compared with those treated with conventional acids. Moreover, Pt/1-aminopyrene-functionalized carbon nanofibers possess the properties of high active surface area, improved performance toward the electrocatalytic oxidation of methanol, and relatively...}, number={9}, journal={JOURNAL OF PHYSICAL CHEMISTRY C}, author={Lin, Zhan and Ji, Liwen and Woodroof, Mariah D. and Yao, Yingfang and Krause, Wendy and Zhang, Xiangwu}, year={2010}, month={Mar}, pages={3791–3797} }