People
Research Fellow
Wang Qian
Title
Research Fellow
Degree
PhD
Research Interests
Flexible electronics
I-FIM Publications:
2026 |
Nikolaev, Konstantin G; Chen, Fei; Ng, Pei Rou; Ivanov, Artemii; Gao, Xinyue; Litvinov, Dmitrii; Koperski, Maciej; Wang, Qian; Novoselov, Kostya S; Andreeva, Daria V Architected 3D carbon/rGO-CuxO nanointerfaces for selective CO2 electroreduction to liquid fuels CHEMICAL ENGINEERING JOURNAL, 548 , 2026, DOI: 10.1016/j.cej.2026.182029. @article{WOS:001882214100001, title = {Architected 3D carbon/rGO-CuxO nanointerfaces for selective CO2 electroreduction to liquid fuels}, author = {Konstantin G Nikolaev and Fei Chen and Pei Rou Ng and Artemii Ivanov and Xinyue Gao and Dmitrii Litvinov and Maciej Koperski and Qian Wang and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1016/j.cej.2026.182029}, times_cited = {0}, issn = {1385-8947}, year = {2026}, date = {2026-11-01}, journal = {CHEMICAL ENGINEERING JOURNAL}, volume = {548}, publisher = {ELSEVIER SCIENCE SA}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {Selective electrochemical carbon dioxide reduction (CO2RR) requires simultaneous control of catalytic reaction pathways, interfacial chemistry, and reactant transport across multiple length scales. Here, we engineer a hierarchical three-dimensional (3D) Cu/CuxO-carbon electrode that integrates these functions within a single architected platform. Oxidative stabilization followed by pyrolysis preserves the printed macroporous lattice while generating a conductive nitrogen-doped carbon framework, with 1.0 mm struts providing a practical balance between structural integrity, electrochemical accessibility, and resistance. Graphene oxide (GO) functionalization and subsequent cathodic Cu deposition simultaneously produce a defect-rich reduced graphene oxide (rGO) interface and size-tunable Cu/CuxO nanoparticles. Product selectivity is governed by the coupled effects of Cu nanoparticle size, potential, and electrolyte pH. Intermediate-sized Cu nanoparticles (32 nm) achieve a Faradaic efficiency (FE) of 66.9% for ethanol at -0.6 V versus the reversible hydrogen electrode (RHE) and pH 6.8, whereas increasing the pH to 7.5 redirects the reaction toward formate. This selectivity is consistent with competition between the *OCHO-mediated C1 pathway and *CO-mediated carbon-carbon coupling toward ethanol. Reaction-diffusion simulations show that the 3D architecture maintains a mean normalized surface CO2 concentration of 0.932, compared with 0.611 for a planar electrode, increasing transport effectiveness by 52.4%. These results establish a multiscale electrode-engineering strategy in which catalyst nanostructure controls reaction branching, the rGO interface regulates catalyst integration, and 3D architecture sustains reactant availability.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Selective electrochemical carbon dioxide reduction (CO2RR) requires simultaneous control of catalytic reaction pathways, interfacial chemistry, and reactant transport across multiple length scales. Here, we engineer a hierarchical three-dimensional (3D) Cu/CuxO-carbon electrode that integrates these functions within a single architected platform. Oxidative stabilization followed by pyrolysis preserves the printed macroporous lattice while generating a conductive nitrogen-doped carbon framework, with 1.0 mm struts providing a practical balance between structural integrity, electrochemical accessibility, and resistance. Graphene oxide (GO) functionalization and subsequent cathodic Cu deposition simultaneously produce a defect-rich reduced graphene oxide (rGO) interface and size-tunable Cu/CuxO nanoparticles. Product selectivity is governed by the coupled effects of Cu nanoparticle size, potential, and electrolyte pH. Intermediate-sized Cu nanoparticles (32 nm) achieve a Faradaic efficiency (FE) of 66.9% for ethanol at -0.6 V versus the reversible hydrogen electrode (RHE) and pH 6.8, whereas increasing the pH to 7.5 redirects the reaction toward formate. This selectivity is consistent with competition between the *OCHO-mediated C1 pathway and *CO-mediated carbon-carbon coupling toward ethanol. Reaction-diffusion simulations show that the 3D architecture maintains a mean normalized surface CO2 concentration of 0.932, compared with 0.611 for a planar electrode, increasing transport effectiveness by 52.4%. These results establish a multiscale electrode-engineering strategy in which catalyst nanostructure controls reaction branching, the rGO interface regulates catalyst integration, and 3D architecture sustains reactant availability.
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Nikolaev, Konstantin G; Ivanov, Artemii; Wen, Han; Wang, Qian; Kravtsov, Mikhail; Bandurin, Denis A; Karim, Nazmul; Novoselov, Kostya S; Andreeva, Daria V One-Spot Synthesized Crystalline Graphene/PANI for Wearable Ionic Transistor Textiles SMALL STRUCTURES, 7 (4), 2026, DOI: 10.1002/sstr.202500904. @article{WOS:001751311800005, title = {One-Spot Synthesized Crystalline Graphene/PANI for Wearable Ionic Transistor Textiles}, author = {Konstantin G Nikolaev and Artemii Ivanov and Han Wen and Qian Wang and Mikhail Kravtsov and Denis A Bandurin and Nazmul Karim and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1002/sstr.202500904}, times_cited = {1}, year = {2026}, date = {2026-04-01}, journal = {SMALL STRUCTURES}, volume = {7}, number = {4}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {Here, we report a one-spot, temperature-controlled AC electropolymerization strategy for converting graphene oxide and aniline into a crystalline, processable reduced graphene oxide (rGO)/polyaniline (PANI) composite for wearable ionic transistor textiles. By tuning the electropolymerization temperature from 4 degrees C to 55 degrees C under a low-frequency triangular AC waveform, followed by mild postreduction, conformal polycrystalline PANI nanodomains are grown directly on rGO sheets. Low-temperature synthesis yields the highest structural ordering and the lowest fraction of protonated imine species, directly linking growth conditions to mixed ionic-electronic transport behavior. The resulting rGO/PANI composite functions as an electrolyte-gated transistor with stable operation and amplified gate response. Furthermore, the composite can be stencil printed onto cotton textiles to realize ratiometric Na+/K+ sensing at constant ionic strength, highlighting its potential for scalable, wearable ion-sensing architectures.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Here, we report a one-spot, temperature-controlled AC electropolymerization strategy for converting graphene oxide and aniline into a crystalline, processable reduced graphene oxide (rGO)/polyaniline (PANI) composite for wearable ionic transistor textiles. By tuning the electropolymerization temperature from 4 degrees C to 55 degrees C under a low-frequency triangular AC waveform, followed by mild postreduction, conformal polycrystalline PANI nanodomains are grown directly on rGO sheets. Low-temperature synthesis yields the highest structural ordering and the lowest fraction of protonated imine species, directly linking growth conditions to mixed ionic-electronic transport behavior. The resulting rGO/PANI composite functions as an electrolyte-gated transistor with stable operation and amplified gate response. Furthermore, the composite can be stencil printed onto cotton textiles to realize ratiometric Na+/K+ sensing at constant ionic strength, highlighting its potential for scalable, wearable ion-sensing architectures.
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2025 |
Yang, Kou; Wang, Qinyue; Nikolaev, Konstantin G; Wang, Qian; Moskalenko, Ivan V; Zhang, Shanqing; Qiu, Xueqing; Timashev, Eduard O; Skorb, Ekaterina V; Novoselov, Kostya S; Andreeva, Daria V Nanoconfined MXene/Cellulose Membranes for Selective Lithium Extraction from Brines and Black Mass 12 ACS NANO, 19 (40), pp. 35483-35492, 2025, DOI: 10.1021/acsnano.5c08653. @article{WOS:001586940700001, title = {Nanoconfined MXene/Cellulose Membranes for Selective Lithium Extraction from Brines and Black Mass}, author = {Kou Yang and Qinyue Wang and Konstantin G Nikolaev and Qian Wang and Ivan V Moskalenko and Shanqing Zhang and Xueqing Qiu and Eduard O Timashev and Ekaterina V Skorb and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1021/acsnano.5c08653}, times_cited = {12}, issn = {1936-0851}, year = {2025}, date = {2025-10-01}, journal = {ACS NANO}, volume = {19}, number = {40}, pages = {35483-35492}, publisher = {AMER CHEMICAL SOC}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {A nanoconfined thermoresponsive membrane composed of Ti3C2T x MXene and hydroxypropyl cellulose (HPC) was developed for selective Li+ extraction. By integrating the electrothermal conductivity of MXenes and hydration-responsive gating of HPC, the membrane forms heterochannels with tunable spacing that regulate ion transport through nanoconfinement-enhanced mechanisms based on interaction energy and hydration radius. While density functional theory calculations predicted stronger sorption for Mg2+, experimental data revealed a clear preference for Li+ uptake from both simulated brine and battery black mass. This selectivity is attributed to favorable interactions of Li+ within the nanoconfined composite channels, where the subnanometer interlayer spacings promote partial dehydration and size-sieving effects. Li+ retention is governed not only by thermodynamic affinity but also by kinetic acceleration in nanoconfined pathways and hydration-based steric control. The membrane exhibits a reversible thermal response and maintains stable performance under Joule heating. It achieves >90% extraction efficiency from simulated Atacama brine and up to 98% Li+ recovery from black mass supplied by VGM Sustainability Solutions (SG3R, Pte. Ltd.).}, keywords = {}, pubstate = {published}, tppubtype = {article} } A nanoconfined thermoresponsive membrane composed of Ti3C2T x MXene and hydroxypropyl cellulose (HPC) was developed for selective Li+ extraction. By integrating the electrothermal conductivity of MXenes and hydration-responsive gating of HPC, the membrane forms heterochannels with tunable spacing that regulate ion transport through nanoconfinement-enhanced mechanisms based on interaction energy and hydration radius. While density functional theory calculations predicted stronger sorption for Mg2+, experimental data revealed a clear preference for Li+ uptake from both simulated brine and battery black mass. This selectivity is attributed to favorable interactions of Li+ within the nanoconfined composite channels, where the subnanometer interlayer spacings promote partial dehydration and size-sieving effects. Li+ retention is governed not only by thermodynamic affinity but also by kinetic acceleration in nanoconfined pathways and hydration-based steric control. The membrane exhibits a reversible thermal response and maintains stable performance under Joule heating. It achieves >90% extraction efficiency from simulated Atacama brine and up to 98% Li+ recovery from black mass supplied by VGM Sustainability Solutions (SG3R, Pte. Ltd.).
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Wang, Qian; Wang, Wei; Hu, Yuyang; Zhou, Fuhui; Yang, Haitao Recent advances of stretchable soft antennas: material, structure and integration NANOSCALE HORIZONS, 10 (11), pp. 2809-2827, 2025, DOI: 10.1039/d5nh00383k. @article{WOS:001557034100001, title = {Recent advances of stretchable soft antennas: material, structure and integration}, author = {Qian Wang and Wei Wang and Yuyang Hu and Fuhui Zhou and Haitao Yang}, doi = {10.1039/d5nh00383k}, times_cited = {4}, issn = {2055-6756}, year = {2025}, date = {2025-10-01}, journal = {NANOSCALE HORIZONS}, volume = {10}, number = {11}, pages = {2809-2827}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {Stretchable soft antennas represent a transformative class of devices that seamlessly integrate wireless communication into deformable and dynamic platforms. Enabled by advances in functional materials and structural engineering, these antennas can withstand large mechanical deformations while maintaining stable electromagnetic performance - unlocking new possibilities in wearable electronics, soft robotics, and implantable biomedical systems. This review systematically surveys recent progress in conductive material choices - from traditional metals and liquid metal to nanocomposites and hybrid architectures - and examines how structural strategies such as serpentine layouts, kirigami patterns, and out-of-plane designs redistribute strain to preserve antenna performance under repeated deformation. We also discuss emerging fabrication techniques and applications in wireless health monitoring, soft robotic systems, and energy harvesting. Finally, we highlight key challenges, including improving environmental stability, achieving seamless multi-module integration, and unraveling the coupling mechanisms between mechanical deformation and electromagnetic behavior. This review offers a materials and structure driven framework for the rational design of stretchable soft antennas with robust wireless functionality.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Stretchable soft antennas represent a transformative class of devices that seamlessly integrate wireless communication into deformable and dynamic platforms. Enabled by advances in functional materials and structural engineering, these antennas can withstand large mechanical deformations while maintaining stable electromagnetic performance - unlocking new possibilities in wearable electronics, soft robotics, and implantable biomedical systems. This review systematically surveys recent progress in conductive material choices - from traditional metals and liquid metal to nanocomposites and hybrid architectures - and examines how structural strategies such as serpentine layouts, kirigami patterns, and out-of-plane designs redistribute strain to preserve antenna performance under repeated deformation. We also discuss emerging fabrication techniques and applications in wireless health monitoring, soft robotic systems, and energy harvesting. Finally, we highlight key challenges, including improving environmental stability, achieving seamless multi-module integration, and unraveling the coupling mechanisms between mechanical deformation and electromagnetic behavior. This review offers a materials and structure driven framework for the rational design of stretchable soft antennas with robust wireless functionality.
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Nikolaev, Konstantin G; Grebenchuk, Sergey; Jinpei, Zhao; Yang, Kou; Zhang, Yixin; Shan, Ong Mei; Sorokin, Vitaly; Chen, Siyu; Wang, Qian; Bong, Jia Hui; Novoselov, Kostya S; Andreeva, Daria V Graphene-Based Oscillators for Biomimetic Neuro-Interfaces ADVANCED ELECTRONIC MATERIALS, 11 (15), 2025, DOI: 10.1002/aelm.202500219. @article{WOS:001530117400001, title = {Graphene-Based Oscillators for Biomimetic Neuro-Interfaces}, author = {Konstantin G Nikolaev and Sergey Grebenchuk and Zhao Jinpei and Kou Yang and Yixin Zhang and Ong Mei Shan and Vitaly Sorokin and Siyu Chen and Qian Wang and Jia Hui Bong and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1002/aelm.202500219}, times_cited = {5}, issn = {2199-160X}, year = {2025}, date = {2025-09-01}, journal = {ADVANCED ELECTRONIC MATERIALS}, volume = {11}, number = {15}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {Chemical oscillators-such as the Belousov-Zhabotinsky reaction-have long served as model systems for studying non-equilibrium chemical dynamics and as analogues of biological oscillations. However, many biological processes rely on out-of-equilibrium, often oscillatory, ionic fluxes that do not involve chemical reactions. Examples include action potentials in neurons, muscle contraction, cardiac rhythmicity, intracellular calcium signaling, and calcium wave oscillations. Despite these parallels, the development of biomimetic systems compatible with neuromorphic interfaces remains a significant challenge. Here, a strategy is demonstrated to organize oscillating ionic currents by developing ionic transistors composed of graphene oxide and polyelectrolyte, and assembling them into all-ionic integrated circuits. By driving these systems out of equilibrium using external voltages, periodic motion of various ions across defined interfaces is achieved. This behavior, governed by local electric fields arising from unbalanced ionic concentrations, closely mimics biological excitability, such as that observed in neuronal and cardiac systems. These ionic transistors serve as a foundational building block for neuromorphic interfaces, offering a universal platform to emulate complex biological ionic processes with high fidelity.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Chemical oscillators-such as the Belousov-Zhabotinsky reaction-have long served as model systems for studying non-equilibrium chemical dynamics and as analogues of biological oscillations. However, many biological processes rely on out-of-equilibrium, often oscillatory, ionic fluxes that do not involve chemical reactions. Examples include action potentials in neurons, muscle contraction, cardiac rhythmicity, intracellular calcium signaling, and calcium wave oscillations. Despite these parallels, the development of biomimetic systems compatible with neuromorphic interfaces remains a significant challenge. Here, a strategy is demonstrated to organize oscillating ionic currents by developing ionic transistors composed of graphene oxide and polyelectrolyte, and assembling them into all-ionic integrated circuits. By driving these systems out of equilibrium using external voltages, periodic motion of various ions across defined interfaces is achieved. This behavior, governed by local electric fields arising from unbalanced ionic concentrations, closely mimics biological excitability, such as that observed in neuronal and cardiac systems. These ionic transistors serve as a foundational building block for neuromorphic interfaces, offering a universal platform to emulate complex biological ionic processes with high fidelity.
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