Yuanyuan Ma

ORCID: 0000-0001-7590-2680
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About
Contact & Profiles
Research Areas
  • Electrocatalysts for Energy Conversion
  • Advanced battery technologies research
  • Supercapacitor Materials and Fabrication
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Advancements in Battery Materials
  • Fuel Cells and Related Materials
  • Advanced Battery Materials and Technologies
  • Catalytic Processes in Materials Science
  • Conducting polymers and applications
  • Electrochemical sensors and biosensors
  • Nanomaterials for catalytic reactions
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Photocatalysis Techniques
  • Advanced biosensing and bioanalysis techniques
  • Crystallography and molecular interactions
  • CO2 Reduction Techniques and Catalysts
  • Electrochemical Analysis and Applications
  • Polymer composites and self-healing
  • MXene and MAX Phase Materials
  • Copper-based nanomaterials and applications
  • Biosensors and Analytical Detection
  • Advanced Battery Technologies Research
  • Hydrogen Storage and Materials
  • Catalysts for Methane Reforming

Donghua University
2022-2025

Hebei Normal University
2022-2025

Northwest Normal University
2014-2024

Nanjing Forestry University
2023-2024

Henan University
2024

National University of Singapore
2018-2022

Sinopec (China)
2022

New York University
2022

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2022

Institute of Materials Research and Engineering
2018-2021

A low-cost CoMoP@C electrocatalyst exhibits high efficiency and stable HER performance superior to commercial 20% Pt/C, can directly work in seawater for the with a Faradaic of 92.5%.

10.1039/c6ee03768b article EN Energy & Environmental Science 2017-01-01

Rechargeable batteries have been used to power various electric devices and store energy from renewables, but their toxic components (namely, electrode materials, electrolyte, separator) generally cause serious environment issues when disused. Such toxicity characteristic makes them difficult future wearable electronic devices. Now an environmentally friendly highly safe rechargeable battery, based on a pyrene-4,5,9,10-tetraone (PTO) cathode zinc anode in mild aqueous electrolyte is...

10.1002/anie.201807121 article EN Angewandte Chemie International Edition 2018-07-19

Abstract Given the low cost, ease of fabrication, high safety, and environmental‐friendly characteristics, aqueous rechargeable batteries using mild solutions as electrolytes (pH is close to 7) a monovalent/multivalent metal ion charge carrier, are attracting extensive attention for energy storage. However, accompanied by advantages electrolyte mentioned above, there some challenges that stand in way development these batteries, such narrow stable electrochemical window water, instability...

10.1002/smtd.201800272 article EN Small Methods 2018-09-19

Exploration of cheap, efficient, and highly durable transition-metal-based electrocatalysts is critically important for the renewable energy chain, including both storage conversion. Herein, we have developed cobalt (Co) single atoms anchored in porous nitrogen-doped carbon nanoflake arrays, synthesized from Co-MOF precursor followed by removal unwanted Co clusters. The well-dispersed are attached to network through N–Co bonding, where there extra porosity active surface area created metal...

10.1021/acscatal.8b02556 article EN ACS Catalysis 2018-08-20

A multi-interfacial Ni/WC@NC electrocatalyst exhibits highly efficient HER performance over a wide pH range<italic>via</italic>synergistic electron and mass transfer processes.

10.1039/c8ee01129j article EN Energy & Environmental Science 2018-01-01

Previous research of molybdenum-based electrocatalysts for nitrogen reduction reaction (NRR) has been largely considered on either isolated Mo single atoms (MoSAs) or carbide particles (e.g., Mo2 C) separately, while an integrated synergy (MoSAs-Mo2 the two never considered. The theoretical calculations show that and C nanoparticles exhibit, respectively, different catalytic hydrogen evolution NRR selectivity. Therefore, a new role-playing synergistic mechanism can be well enabled multistep...

10.1002/adma.202002177 article EN Advanced Materials 2020-07-06

Hybrid supercapacitors generally show high power and long life spans but inferior energy densities, which are mainly caused by carbon negative electrodes with low specific capacitances. To improve the traditional methods include optimizing pore structures modifying pseudocapacitive groups on materials. Here, another promising way is suggested, has no adverse effects to materials, that is, constructing electron-rich regions electrode surfaces for absorbing cations as much possible. For this...

10.1002/adma.201806197 article EN Advanced Materials 2018-12-09

During the exploration of highly efficient noble-metal-free electrocatalysts for hydrogen evolution reaction (HER), a promising and challenging strategy is to fabricate composite nanocatalysts by finely tuning metal and/or nonmetal element components. Herein, we report new HER electrocatalyst, which composed molybdenum phosphide carbide nanoparticles (NPs) coated few-layer N-doped graphitic carbon shells (denoted as MoP/Mo2C@C). Such combination mode realized one-step annealing route with...

10.1021/acsami.7b03823 article EN ACS Applied Materials & Interfaces 2017-04-26

A rationally designed oxygen evolution reaction (OER) catalyst with advanced structural and compositional superiority is highly desirable to optimize electrocatalytic performance. Prussian blue analogues (PBAs) adjustable element compositions accessible porous structures represent a promising precursor for the preparation of OER catalysts. Herein, oxygen-doped nickel iron phosphide nanocube arrays (Ni2 P/(NiFe)2 P(O) NAs) grown on Ni foam fabricated from PBAs. The structure synergistic...

10.1002/smll.201802204 article EN Small 2018-09-21

Abstract Rechargeable batteries have been used to power various electric devices and store energy from renewables, but their toxic components (namely, electrode materials, electrolyte, separator) generally cause serious environment issues when disused. Such toxicity characteristic makes them difficult future wearable electronic devices. Now an environmentally friendly highly safe rechargeable battery, based on a pyrene‐4,5,9,10‐tetraone (PTO) cathode zinc anode in mild aqueous electrolyte is...

10.1002/ange.201807121 article EN Angewandte Chemie 2018-07-17

Abstract The performance of quasi‐solid‐state flexible zinc–air batteries (ZABs) is critically dependent on the advancement air electrodes with outstanding bifunctional electrocatalysis for both oxygen reduction reaction (ORR) and evolution (OER), together desired mechanical flexibility robustness. currently available synthesis processes high‐efficiency bimetallic sulfide typically require high‐temperature hydrothermal or chemical vapor deposition, which undesirable in terms complexity...

10.1002/advs.201900628 article EN cc-by Advanced Science 2019-07-05

Abstract Rechargeable batteries with organic electrodes are preferred to those transition‐metal‐containing for their environmental friendliness, and resource availability, but all such reported date based on electrolytes, which raise concerns of safety performance. Here an aqueous‐electrolyte all‐organic rechargeable battery is reported, a maximum operating voltage 2.1 V, in polytriphenylamine (PTPAn) 1,4,5,8‐naphthalenetetracarboxylic dianhydride (NTCDA)‐derived polyimide (PNTCDA) serve as...

10.1002/chem.201700063 article EN Chemistry - A European Journal 2017-01-11

A carbon-coated ultrafine cable-like WC/W<sub>2</sub>C heterojunction nanowire electrocatalyst exhibits remarkable HER performance in a wide pH range.

10.1039/c8ta05007d article EN Journal of Materials Chemistry A 2018-01-01

Abstract The hydrogen evolution reaction (HER) produces clean through an electrochemical process. However, new nonprecious‐metal electrocatalysts for the HER are required to reduce consumption of energy. Herein, we report a Co 2 P/WC nano‐heterojunction that consists P and WC composite phases coated with few‐layer N‐doped graphitic carbon shells (Co P/WC@NC). was prepared by one‐step annealing polyoxometalate Na 9 (NH 4 ) 5 [{(B‐α‐PW O 34 )Co 3 (OH)(H O) (Ale)} Co]⋅35 H 7 6 W 18...

10.1002/cssc.201702328 article EN ChemSusChem 2018-01-02

Generally, sluggish oxygen reduction reaction (ORR) kinetics on cathode limits the practical application of direct methanol fuel cell (DMFC). In this study, zeolitic-imidazolate-framework-8 (ZIF-8)-derived carbon is used to decorate expanded graphite (EG) prepare a nitrogen-rich porous metal-free framework (Z8-NCF-P/EGs) as catalyst for ORR in DMFC. Through use simple one-pot method, ZIF-8 firmly anchored EG obtain ZIF-8/EG precursor via polyvinypyrrolidone (PVP)-assisted route. After...

10.1021/acs.chemmater.8b02275 article EN Chemistry of Materials 2018-08-16

Abstract In this work, an electrochemical paper-based aptasensor was fabricated for label-free and ultrasensitive detection of epidermal growth factor receptor (EGFR) by employing anti-EGFR aptamers as the bio-recognition element. The device used concept paper-folding, or origami, to serve a valve between sample introduction detection, so reducing sampling volumes improving operation convenience. Amino-functionalized graphene (NH 2 -GO)/thionine (THI)/gold particle (AuNP) nanocomposites were...

10.1038/s41378-020-0146-2 article EN cc-by Microsystems & Nanoengineering 2020-05-18
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