@article{orenstein_li_dirican_cheng_chang_yanilmaz_yan_zhang_2024, title={A Comparatively Low Cost, Easy-To-Fabricate, and Environmentally Friendly PVDF/Garnet Composite Solid Electrolyte for Use in Lithium Metal Cells Paired with Lithium Iron Phosphate and Silicon}, volume={6}, ISSN={["1944-8252"]}, url={https://doi.org/10.1021/acsami.4c04145}, DOI={10.1021/acsami.4c04145}, abstractNote={Solid electrolytes may be the answer to overcome many obstacles in developing the next generation of renewable batteries. A novel composite solid electrolyte (CSE) composed of a poly(vinylidene fluoride) (PVDF) base with an active nanofiber filler of aluminum-doped garnet Li ceramic, Li salt lithium bis-(trifluoromethanesulfonyl)imide (LiTFSI), Li fluoride (LiF) stabilizing additive, and plasticizer sulfolane was fabricated. In a Li|CSE|LFP cell with this CSE, a high capacity of 168 mAh g–1 with a retention of 98% after 200 cycles was obtained, representing the best performance to date of a solid electrolyte with a PVDF base and a garnet inorganic filler. In a Li metal cell with Si and Li, it yielded a discharge capacity of 2867 mAh g–1 and was cycled 60 times at a current density of 100 mAh g–1, a significant step forward in utilizing a solid electrolyte of any kind with the desirable Si anode. In producing this CSE, the components and fabrication process were chosen to have a lower cost and improved safety and environmental impact compared with the current state-of-the-art Li-ion battery.}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Orenstein, Raphael and Li, Zezhao and Dirican, Mahmut and Cheng, Hui and Chang, Liang and Yanilmaz, Meltem and Yan, Chaoyi and Zhang, Xiangwu}, year={2024}, month={Jun} }
 @article{yanilmaz_chen_cheng_lee_kim_2024, title={Flexible Centrifugally Spun N, S-Doped SnS<sub>2</sub>-Including Porous Carbon Nanofiber Electrodes for Na-Ion Batteries}, ISSN={["2470-1343"]}, DOI={10.1021/acsomega.4c01138}, abstractNote={Carbon nanofibers are promising for various applications such as energy storage, sensors, and biomedical applications; however, the brittle structure of nanofibers limits the usage of carbon nanofibers. For the first time, a facile and effective strategy is reported to fabricate flexible carbon nanofibers via a fast and safe nanofiber fabrication technique, centrifugal spinning, followed by heat treatment. Moreover, sulfidization was employed to fabricate high-performance flexible N, S-doped SnS}, journal={ACS OMEGA}, author={Yanilmaz, Meltem and Chen, Lei and Cheng, Hui and Lee, Kyung Eun and Kim, Juran}, year={2024}, month={May} }
 @article{zhu_cheng_zhu_li_gao_zhang_2022, title={Electrospun Nanofibers Enabled Advanced Lithium-Sulfur Batteries}, volume={1}, ISSN={["2643-6728"]}, url={https://doi.org/10.1021/accountsmr.1c00198}, DOI={10.1021/accountsmr.1c00198}, abstractNote={ConspectusLithium–sulfur (Li–S) batteries have been extensively studied because both S and Li have high theoretical capacities, and S is abundant and environmentally friendly. However, their practical applications have been hindered by several challenges, including poor conductivity of S and its intermediates, shuttle effects of polysulfides, Li dendrite growth, etc. Tremendous efforts have been taken to tackle these issues by developing functional S host materials, separators and interlayers, solid-state electrolytes, etc., during the past decade. Compared to structurally complicated materials and intricate preparation approaches, electrospun nanofibers have obtained tremendous interests since they have played an extremely crucial role in improving the overall performance of Li–S cells due to their unique features such as easy-setup, substantial surface area, outstanding flexibility, high porosity, excellent mechanical properties, etc.In this Account, we highlight the advancements and progress of electrospun nanofibers applied for obtaining advanced Li–S batteries based on our research: from the traditional liquid system to a full solid-state cell. It starts with the fundamental electrochemistry and challenges of Li–S batteries and then focuses on the advantages of utilizing electrospun nanofibers in Li–S batteries and their working mechanisms, which are detailed from five perspectives: (i) cathode design; (ii) interlayers; (iii) separators; (iv) solid-state electrolytes; (v) Li anode protection. For example, we will discuss (1) how the appropriate nanofiber cathode designs improve the electrical conductivity and utilization of the cathode, (2) how nanofiber interlayers minimize the diffusion of polysulfides, (3) how nanofiber separators improve cells’ rate capability, (4) how nanofiber-based solid-state electrolytes boost the overall ionic conductivity, accelerating the use of Li–S cells, and (5) how the applications of nanofibers suppress the Li dendrite growth. In the end, the critical research directions needed and the remaining challenges to be addressed are summarized. It is expected that this Account would provide an understanding of the importance for achieving advanced Li–S cells via utilizing electrospun nanofibers, inspiring extensive research on their rational designs and promoting the development of this field.}, journal={ACCOUNTS OF MATERIALS RESEARCH}, author={Zhu, Jiadeng and Cheng, Hui and Zhu, Pei and Li, Ya and Gao, Qiang and Zhang, Xiangwu}, year={2022}, month={Jan} }
 @article{subjalearndee_he_cheng_tesatchabut_eiamlamai_limthongkul_intasanta_gao_zhang_2022, title={Gamma((sic))-MnO2/rGO Fibered Cathode Fabrication from Wet Spinning and Dip Coating Techniques for Cable-Shaped Zn-Ion Batteries}, volume={1}, ISSN={["2524-793X"]}, url={https://doi.org/10.1007/s42765-021-00118-3}, DOI={10.1007/s42765-021-00118-3}, journal={ADVANCED FIBER MATERIALS}, author={Subjalearndee, Nakarin and He, Nanfei and Cheng, Hui and Tesatchabut, Panpanat and Eiamlamai, Priew and Limthongkul, Pimpa and Intasanta, Varol and Gao, Wei and Zhang, Xiangwu}, year={2022}, month={Jan} }
 @article{yan_zhou_cheng_orenstein_zhu_yildiz_bradford_jur_wu_dirican_et al._2022, title={Interconnected cathode-electrolyte double-layer enabling continuous Li-ion conduction throughout solid-state Li-S battery}, volume={44}, ISSN={["2405-8297"]}, DOI={10.1016/j.ensm.2021.10.014}, abstractNote={All-solid-state lithium (Li) batteries with high energy density are a promising solution for the next-generation energy storage systems in large-scale devices. To simultaneously overcome the challenges of poor ionic conduction of solid electrolytes and shuttling of active materials, we introduce a functional electrolyte-cathode bilayer framework with interconnected LLAZO channels from the electrolyte into the cathode for advanced solid-state Li-S batteries. Differing from the traditional solid-state batteries with separated layer compositions, the introduced bilayer framework provides ultrafast and continuous ion/electron conduction. Instead of transferring Li+ across the polymer and garnet phases which involve huge interfacial resistance, Li+ is directly conducted through the LLAZO channels created continuously from the cathode layer to the solid electrolyte layer, significantly shortening the diffusion distance and facilitating the redox reaction of sulfur and sulfides. A stable cycle life is demonstrated in the prototype Li-S solid-state batteries assembled with the introduced [email protected] interconnected bilayer framework. High capacity is obtained at room temperature, indicating the superior electrochemical properties of the bilayer framework that result from the unique design of the interconnected LLAZO garnet phase.}, journal={ENERGY STORAGE MATERIALS}, author={Yan, Chaoyi and Zhou, Ying and Cheng, Hui and Orenstein, Raphael and Zhu, Pei and Yildiz, Ozkan and Bradford, Philip and Jur, Jesse and Wu, Nianqiang and Dirican, Mahmut and et al.}, year={2022}, month={Jan}, pages={136–144} }
 @article{cheng_yan_orenstein_dirican_wei_subjalearndee_zhang_2022, title={Polyacrylonitrile Nanofiber-Reinforced Flexible Single-Ion Conducting Polymer Electrolyte for High-Performance, Room-Temperature All-Solid-State Li-Metal Batteries}, volume={4}, ISSN={["2524-793X"]}, url={https://doi.org/10.1007/s42765-021-00128-1}, DOI={10.1007/s42765-021-00128-1}, number={3}, journal={ADVANCED FIBER MATERIALS}, publisher={Springer Science and Business Media LLC}, author={Cheng, Hui and Yan, Chaoyi and Orenstein, Raphael and Dirican, Mahmut and Wei, Shuzhen and Subjalearndee, Nakarin and Zhang, Xiangwu}, year={2022}, month={Jan} }
 @article{ma_wu_dirican_cheng_li_song_shi_zhang_2021, title={Carbon black-based porous sub-micron carbon fibers for flexible supercapacitors}, volume={537}, ISSN={["1873-5584"]}, DOI={10.1016/j.apsusc.2020.147914}, abstractNote={Construction of functional materials using low-dimensional carbons has attracted tremendous attention in the field of energy storage devices. Herein, porous carbon black (CB) is used as the dominant building unit to construct porous sub-micron carbon fibers by electrospinning and pyrolysis with polyacrylonitrile (PAN)-based pyrolytic carbon as the binder. Inheriting abundant pores and surface area from the porous CB, the resultant CB-based sub-micron fibers present considerable porosity and specific surface area. The PAN-based pyrolytic carbon endows the CB-based sub-micron carbon fibers with a considerable quantity of N/O-containing surface. CB content plays a crucial role in improving thermal stability, flexibility, and conductivity of the resultant sub-micron carbon fibers. The CB-based sub-micron carbon fibers present a considerable specific capacitance, excellent cycling stability and can be used electrodes for flexible supercapacitors.}, journal={APPLIED SURFACE SCIENCE}, author={Ma, Chang and Wu, Liqiang and Dirican, Mahmut and Cheng, Hui and Li, Junjing and Song, Yan and Shi, Jingli and Zhang, Xiangwu}, year={2021}, month={Jan} }
 @article{li_zhu_cheng_li_cho_jiang_gao_zhang_2021, title={Developments of Advanced Electrospinning Techniques: A Critical Review}, volume={7}, ISSN={["2365-709X"]}, DOI={10.1002/admt.202100410}, abstractNote={Abstract}, journal={ADVANCED MATERIALS TECHNOLOGIES}, author={Li, Ya and Zhu, Jiadeng and Cheng, Hui and Li, Guoqing and Cho, Hyunjin and Jiang, Mengjin and Gao, Qiang and Zhang, Xiangwu}, year={2021}, month={Jul} }
 @article{ma_cao_dirican_subjalearndee_cheng_li_song_shi_zhang_2021, title={Fabrication, structure and supercapacitance of flexible porous carbon nanobelt webs with enhanced inter-fiber connection}, volume={543}, ISBN={1873-5584}, DOI={10.1016/j.apsusc.2020.148783}, abstractNote={Flexible carbon nanobelt webs (CNBWs) with a hierarchical porous structure, considerable N- and/or O-containing surface functionalities were fabricated by electrospinning of phenolic resin/PVP/magnesium nitrate (MNH) solution, followed by curing, thermal treatment and picking. The effect of spinning humidity on the morphology of cured fibers was investigated. The results showed that low humidity was required for successful spinning and collection of the nanobelts. The addition of MNH played a crucial role in inhibiting inter-nanobelt adhesions and warping of nanobelts during thermal treatment and producing hierarchical porous structure. The increase in MNH content resulted in an enhancement in the specific surface area (SSA), micropore volume, and mesoporosity of the CNBWs. The achieved CNBWs displayed the maximum SSA of 779 m2 g−1 and a mesoporosity of 82%. The reduction in the number of warping endowed the CNBWs with face-to-face inter-nanobelt connection, then brought about a significant enhancement in conductivity and packing density of the CNBWs, which ultimately improved the rate performance and volumetric capacitance. The work proposed a feasible route for improving the conductivity and volumetric capacity of electrospun carbon nanofiber webs as the electrode for supercapacitors or batteries.}, journal={APPLIED SURFACE SCIENCE}, author={Ma, Chang and Cao, Erchuang and Dirican, Mahmut and Subjalearndee, Nakarin and Cheng, Hui and Li, Junjing and Song, Yan and Shi, Jingli and Zhang, Xiangwu}, year={2021} }
 @article{chen_zhang_lu_cheng_liu_zhang_2021, title={Multifunctional Three-Dimensional Bicontinuous Heterofibrous Scaffold for Kinetically Accelerated Polysulfide Trapping and Conversion in Lithium-Sulfur Batteries}, volume={4}, ISSN={["2574-0962"]}, DOI={10.1021/acsaem.1c03113}, abstractNote={Further development of lithium–sulfur (Li–S) batteries is restricted by the insulation of sulfur and the shuttle effect of lithium polysulfide (LiPSs). Herein, we propose a multifunctional freestanding three-dimensional (3D) bicontinuous heterofibrous carbon nanotube–carbon nanofiber (CNTs-CNFs) scaffold via the chemical vapor deposition (CVD) strategy as a polysulfide-engulfing system and a conductive network in the cathode. CNFs construct a continuous network that serves as a freestanding substrate with moderate conductivity for CNTs to grow. The as-grown CNTs with cross-twisted root and cross-winding tips reduce the interfacial impedance of sulfur, achieving up to 77.88% loading. They also act as inserted networks with excellent electrical conductivity in active substance, which facilitate the diffusion and transport of electrons and ions and accelerate redox kinetics, with the initial discharge capacity of 1412.5 mAh g–1 at a current density of 0.2 C. Moreover, the cross-winding of CNT tips in different spatial orientations plays a great role as well in immobilizing the shuttle of soluble LiPSs via the synergistic effect of physical blocking and chemical adsorption. Eventually, the cycle performance is significantly improved with the maintained capacity of 607.7 mAh g–1 after 500 cycles at a current density of 1 C.}, number={12}, journal={ACS APPLIED ENERGY MATERIALS}, author={Chen, Lei and Zhang, Chao and Lu, Zhenqian and Cheng, Hui and Liu, Yong and Zhang, Xiangwu}, year={2021}, month={Dec}, pages={14447–14457} }
 @article{ma_fan_dirican_subjalearndee_cheng_li_song_shi_zhang_2021, title={Rational design of meso-/micro-pores for enhancing ion transportation in highly-porous carbon nanofibers used as electrode for supercapacitors}, volume={545}, ISSN={["1873-5584"]}, DOI={10.1016/j.apsusc.2021.148933}, abstractNote={Carbon nanofiber has been one of the promising electrode materials for supercapacitors. It is desirable but still challenging to optimize meso-/micro-pore ratio and configuration while achieving a high specific surface area in carbon nanofibers. Here, we present the design and preparation of carbon nanofiber mats with both high specific surface area and rational meso-/micropore configuration by electrospinning tetraethyl orthosilicate (TEOS)/phenolic resin (PR)/polyvinylpyrrolidone (PVP)/F127 blend solution, followed by carbothermal reduction, removal of carbon and chlorination. Silicon carbide nanofibers constructed by regulatable secondary nanostructure were achieved by adjusting TEOS content in the spinning solution, derived from which microporous carbon nanofibers with considerable mesopores (60–70% in mesoporosity), diverse secondary nanostructure (24–44 nm), and high specific surface area (1765–1890 m2 g−1) were prepared. The formation mechanism of the diverse secondary nanostructure in carbon nanofiber was proposed. The carbide-derived carbon nanofibers showed an excellent specific capacitance (316 F g−1 at 0.1 A g−1) and high-rate capability (186 F g−1 at 100 A g−1) due to the enhanced ion transportation, which was achieved by shortening micropore channels and offering convenient mesoporous channel towards microporous domains.}, journal={APPLIED SURFACE SCIENCE}, author={Ma, Chang and Fan, Qingchao and Dirican, Mahmut and Subjalearndee, Nakarin and Cheng, Hui and Li, Junjing and Song, Yan and Shi, Jingli and Zhang, Xiangwu}, year={2021}, month={Apr} }
 @article{xu_ren_cheng_2021, title={Sol-modified sintering-induced mesoporous polytetrafluoroethylene/poly (acrylic acid-co-hydroxyethyl methacrylate) composite fiber as an adsorbent with high adsorption capacity for dyes}, volume={272}, ISSN={["1879-3312"]}, DOI={10.1016/j.matchemphys.2021.124988}, abstractNote={An extremely spinnable polymer, poly (acrylic acid-co-hydroxyethyl methacrylate) (P(AA-co-HEMA)), was used as a carrier to facilitate the formation of wet-spun polytetrafluoroethylene (PTFE) fiber. A simple technique combining sol modification with sintering treatment was then applied to process the wet-spun fiber into hydrophobic composite fiber with large numbers of mesopores and water-wettable sites. Due to the well-developed porous structure and essential hydrophilic feature, the composite fiber exhibited an outstanding capability to adsorb methylene blue (MB) from water. The research results showed that the maximum adsorption capacity of composite fiber for MB can reach to 155.75 mg/g. At each cycle, 0.05 g composite fiber can remove 90% of MB from 10 mL fresh MB solution with a concentration of 20 mg/L within 90 min by adsorption, manifesting the high efficiency of obtained composite fiber. In addition to MB, the composite fiber also showed a great capability to adsorb other dyes within a short time. Therefore, it is believable that the prepared fiber will gain a broad attention in the field of dye wastewater treatment.}, journal={MATERIALS CHEMISTRY AND PHYSICS}, author={Xu, Naiku and Ren, Mengru and Cheng, Hui}, year={2021}, month={Nov} }
 @article{ma_wu_dirican_cheng_li_song_shi_zhang_2021, title={ZnO-assisted synthesis of lignin-based ultra-fine microporous carbon nanofibers for supercapacitors}, volume={586}, ISSN={["1095-7103"]}, DOI={10.1016/j.jcis.2020.10.105}, abstractNote={Reducing the material size could be an effective approach to enhance the electrochemical performance of porous carbons for supercapacitors. In this work, ultra-fine porous carbon nanofibers are prepared by electrospinning using lignin/ polyvinylpyrrolidone as carbon precursor and zinc nitrate hexahydrate (ZNH) as an additive, followed by pre-oxidation, carbonization, and pickling processes. Assisted by the ZnO template, the pyrolytic product of ZNH, abundant micropores are yielded, leading to the formation of microporous carbon nanofibers with specific surface area (SSA) up to 1363 m2 g−1. The average diameter of the lignin-based ultra-fine porous carbon nanofibers (LUPCFs) is effectively controlled from 209 to 83 nm through adjusting the ZNH content. With good flexibility and self-standing nature, the LUPCFs could be directly cut into electrodes for use in supercapacitors. High accessible surface, enriched surface N/O groups, and reduced fiber diameters endow the LUPCFs-based electrodes with an excellent specific capacitance of 289 F g−1. The reduction of fiber diameters remarkably improves the rate performance of the LUPCFs and leads to a low relaxation time constant of 0.37 s. The high specific capacitance of 162 F g−1 is maintained when the current density is increased from 0.1 to 20 A g−1. Besides, the fabricated LUPCFs show exceptional cycling stability in symmetrical supercapacitors, manifesting a promising application prospect in the next generation of supercapacitors.}, journal={JOURNAL OF COLLOID AND INTERFACE SCIENCE}, author={Ma, Chang and Wu, Liqiang and Dirican, Mahmut and Cheng, Hui and Li, Junjing and Song, Yan and Shi, Jingli and Zhang, Xiangwu}, year={2021}, month={Mar}, pages={412–422} }
 @article{jia_dirican_sun_chen_yan_zhu_dong_du_cheng_guo_et al._2019, title={Advanced ZnSnS3@rGO Anode Material for Superior Sodium-Ion and Lithium-Ion Storage with Ultralong Cycle Life}, volume={6}, ISSN={["2196-0216"]}, url={https://publons.com/publon/26924629/}, DOI={10.1002/celc.201801333}, abstractNote={Abstract}, number={4}, journal={CHEMELECTROCHEM}, author={Jia, Hao and Dirican, Mahmut and Sun, Na and Chen, Chen and Yan, Chaoyi and Zhu, Pei and Dong, Xia and Du, Zhuang and Cheng, Hui and Guo, Jiansheng and et al.}, year={2019}, month={Feb}, pages={1183–1191} }