Hangjun Ying

ORCID: 0000-0001-9758-4847
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About
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Research Areas
  • Advancements in Battery Materials
  • Advanced Battery Materials and Technologies
  • MXene and MAX Phase Materials
  • Advanced Battery Technologies Research
  • Supercapacitor Materials and Fabrication
  • Advanced battery technologies research
  • 2D Materials and Applications
  • Ferroelectric and Negative Capacitance Devices
  • Advanced Memory and Neural Computing
  • Extraction and Separation Processes
  • Catalytic Processes in Materials Science
  • Electrocatalysts for Energy Conversion
  • CO2 Reduction Techniques and Catalysts
  • Polyoxometalates: Synthesis and Applications
  • Perovskite Materials and Applications
  • Transition Metal Oxide Nanomaterials
  • Semiconductor materials and devices
  • Mesoporous Materials and Catalysis
  • Graphene research and applications
  • Catalysis and Oxidation Reactions
  • Semiconductor materials and interfaces
  • Graphene and Nanomaterials Applications
  • Advanced Photocatalysis Techniques
  • Fiber-reinforced polymer composites
  • Membrane-based Ion Separation Techniques

Zhejiang University
2017-2025

Ningbo Institute of Industrial Technology
2013-2018

University of Chinese Academy of Sciences
2017-2018

Chinese Academy of Sciences
2013-2018

Sn/N-doped carbon microcage composites (Sn/NMCs) are synthesized through a simple spray drying process and these exhibit excellent electrochemical performance in both LIBs SIBs.

10.1039/c7ta01480e article EN Journal of Materials Chemistry A 2017-01-01

Abstract The MXene‐based heterostructures have recently attracted great interest as anode materials for sodium‐ion batteries (SIBs). Nonetheless, the complicated and harsh preparation process impedes their further commercialization. Herein, a novel, safe, low‐destructive, universal strategy rationally fabricating Ti 3 C 2 T x MXene/transition metal sulfides (MS y ) is presented via Lewis acidic molten salts etching subsequent in situ sulfurization treatment. Benefiting from interfacial...

10.1002/aenm.202202052 article EN Advanced Energy Materials 2022-08-25

Transition metal nitrides (TMNs) are affirmed to be an appealing candidate for boosting the performance of lithium-sulfur (Li-S) batteries due their excellent conductivity, strong interaction with sulfur species, and effective catalytic ability conversion polysulfides. However, traditional bulk TMNs difficult achieve large active surface area fast transport channels electrons/ions simultaneously. Here, a 2D ultrathin geometry titanium nitride (TiN) is realized by facile topochemical...

10.1002/smll.202307784 article EN Small 2024-01-26

MXenes have been widely explored in energy storage because of their extraordinary properties; however, the majority research on application was staged at multilayered or assisted by carbon materials. Scientifically speaking, two most distinctive properties are usually neglected, composed large interlayer spacing and abundant surface chemistry, which distinguish from other two-dimensional Herein, few-layered MXene (f-MXene) nanosheet powders can be easily prepared according to modified...

10.1021/acsnano.0c08770 article EN ACS Nano 2020-12-10

Abstract Herein, high‐content N‐doped carbon nanotube (CNT) microspheres (HNCMs) are successfully synthesized through simple spray drying and one‐step pyrolysis. HNCM possesses a hierarchically porous architecture N‐doping. In particular, HNCM800 (HNCM pyrolyzed at 800 °C) shows high nitrogen content of 12.43 at%. The structure derived from well‐interconnected CNTs not only offers highly conductive network blocks diffusion soluble lithium polysulfides (LiPSs) in physical adsorption, but also...

10.1002/adfm.201904819 article EN Advanced Functional Materials 2019-07-28

Abstract MXenes have attracted great interest in various fields, and pillared open a new path with larger interlayer spacing. However, the further study of is blocked at multilayered state due to serious restacking phenomenon few-layered MXene nanosheets. In this work, for first time, we designed facile NH 4+ method fundamentally solve issues nanosheets succeeded achieving MXene. Sn nanocomplex Ti 3 C 2 T x (STCT) composites were synthesized by introducing atomic into via pillaring...

10.1007/s40820-020-0405-7 article EN cc-by Nano-Micro Letters 2020-03-25

Aqueous rechargeable zinc ion batteries are regarded as a competitive alternative to lithium-ion because of their distinct advantages high security, energy density, low cost, and environmental friendliness. However, deep-seated problems including Zn dendrite adverse side reactions severely impede the practical application. In this work, we proposed freestanding Zn-electrolyte interfacial layer composed multicapsular carbon fibers (MCFs) regulate plating/stripping behavior anodes. The...

10.1007/s40820-022-00921-6 article EN cc-by Nano-Micro Letters 2022-09-01

A simple strategy is proposed for the fabrication of Ti 3 C 2 T x /CuS hybrids via Lewis acidic etching route. The shows boosted charge/mass transfer kinetics and structural integrity, leading to superior sodium storage performance.

10.1039/d2ta06695e article EN Journal of Materials Chemistry A 2022-01-01

Aqueous zinc-ion batteries (AZIBs) exhibit promising prospects in becoming large-scale energy storage systems due to environmental friendliness, high security, and low cost. However, the growth of Zn dendrites side reactions remain heady obstacles for practical application AZIBs. To solve these challenges, a functionalized Janus separator is successfully constructed by coating halloysite nanotubes (HNTs) on glass fiber (GF). Impressively, different electronegativity inner outer surfaces HNTs...

10.1021/acsnano.4c09678 article EN ACS Nano 2024-09-05

Rechargeable lithium/iodine (Li/I2) batteries have attracted much attention because of their high gravimetric/volumetric energy densities, natural abundance and low cost. However, problems the system, such as highly unstable iodine species under temperature, subsequent dissolution in electrolyte continually reacting with lithium anode prevent practical use rechargeable Li/I2 cells. A polymer-iodine composite (polyvinylpyrrolidone-iodine) thermostability is employed cathode material battery...

10.1021/acsami.8b03212 article EN ACS Applied Materials & Interfaces 2018-05-08

In this work, a new effective and low-cost binder applied in porous silicon anode is designed through blending of poly(acrylic acid) (PAA) poly(ethylene- co-vinyl acetate) (EVA) latex (PAA/EVA) to avoid pulverization electrodes loss electronic contact because huge volume changes during repeated charge/discharge cycles. PAA with large number carboxyl groups offers strong binding strength among particles. EVA high elastic property enhances the ductility PAA/EVA binder. The high-ductility...

10.1021/acsami.8b21936 article EN ACS Applied Materials & Interfaces 2019-03-22

MXenes, synthesized from MAX, have emerged as new energy-storage materials for a good combination of metallic conductivity and rich surface chemistry. The reported MXenes are mostly Al-based MAX. It is still big challenge to synthesize abundant Si-based MAX because its strong Ti–Si bonds. Here, we report the first time high-energy ultrasonic cell-crushing extraction method successfully prepare Ti3C2Tx using single low-concentration etchant. This novel strategy preparing has high efficiency...

10.1021/acsami.9b13308 article EN ACS Applied Materials & Interfaces 2019-10-22

MXenes have great application prospect in energy storage fields due to a series of special physicochemical properties. However, the is greatly limited low intrinsic capacity. Here, through spray drying and vapor deposition methods, N-doped Ti3C2Tx phosphorus composites (N-Ti3C2Tx/P) were prepared for first time. The red particles absorbed walnut-like N-Ti3C2Tx matrix, facilitating transport Li+ electrons. When used as anodes lithium-ion batteries, battery can cycle up 1040 cycles with high...

10.1021/acs.jpclett.9b02335 article EN The Journal of Physical Chemistry Letters 2019-10-07

An amorphous cross-linked binder is prepared from abundant and low-cost sodium alginate carboxymethyl cellulose by protonation mixing used to improve the electrochemical performance of silicon anodes in lithium-ion batteries. The structure, formed intermolecular hydrogen bonding between functional groups two polymers, effectively enhances flexibility strength binder, resulting strong adhesion other components anodes. Furthermore, tolerates large volume changes reduces pulverization during...

10.1002/cssc.201902079 article EN ChemSusChem 2019-08-27
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