A5100705971- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Conducting polymers and applications
- Crystallization and Solubility Studies
- Advanced Battery Materials and Technologies
- X-ray Diffraction in Crystallography
- Advancements in Battery Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Electrochemical sensors and biosensors
- Advanced Sensor and Energy Harvesting Materials
- Advanced Photocatalysis Techniques
- Polyoxometalates: Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Ionic liquids properties and applications
- Extraction and Separation Processes
- Crystallography and molecular interactions
- Transition Metal Oxide Nanomaterials
- Advanced Battery Technologies Research
- Magnetism in coordination complexes
- Luminescence Properties of Advanced Materials
- Micro and Nano Robotics
- Electrochemical Analysis and Applications
- Nanomaterials for catalytic reactions
- Aluminum Alloys Composites Properties
- Chemical Synthesis and Reactions
Northeastern University
2016-2025
Hebei Normal University
2025
Ludong University
2024-2025
Sichuan University
2008-2024
Shandong University
2021-2024
Inner Mongolia Electric Power (China)
2024
China Agricultural University
2006-2024
Obstetrics and Gynecology Hospital of Fudan University
2023-2024
Hebei Medical University
2016-2024
Second Hospital of Hebei Medical University
2016-2024
Metal oxides have attracted renewed interest as promising electrode materials for high energy density supercapacitors. However, the electrochemical performance of metal oxide deteriorates significantly with increase mass loading due to their moderate electronic and ionic conductivities. This limits practical energy. Herein, we perform a morphology phase-controlled electrodeposition MnO2 ultrahigh 10 mg cm-2 on carbon cloth substrate achieve overall capacitance without sacrificing...
Here we demonstrate a high energy density asymmetric supercapacitor with nickel oxide nanoflake arrays as the cathode and reduced graphene anode. Nickel were synthesized on flexible carbon cloth substrate using seed-mediated hydrothermal method. The sheets deposited three-dimensional (3D) foam by treatment of in solution. nanostructured electrodes provide large effective surface area. device operates voltage 1.7 V achieved remarkable areal capacitance 248 mF cm−2 (specific 50 F g−1) at...
Polypyrrole (PPy) is a promising pseudocapacitive material for supercapacitor electrodes. However, its poor cycling stability the major hurdle practical applications. Here two‐prong strategy demonstrated to stabilize PPy film by growing it on functionalized partial‐exfoliated graphite (FEG) substrate and doping with β ‐naphthalene sulfonate anions (NS − ). The electrode achieves remarkable capacitance retention rate of 97.5% after between −0.8 0 V versus saturated calomel 10 000 cycles....
High-temperature activation has been commonly used to boost the photoelectrochemical (PEC) performance of hematite nanowires for water oxidation, by inducing Sn diffusion from fluorine-doped tin oxide (FTO) substrate into hematite. Yet, thermally annealed at high temperature suffer two major drawbacks that negatively affect their performance. First, structural deformation reduces light absorption capability nanowire. Second, this "passive" doping method leads nonuniform distribution dopant...
Abstract NH 4 + ions as charge carriers show potential for aqueous rechargeable batteries. Studied here the first time is ‐storage chemistry using electrodeposited manganese oxide (MnO x ). MnO experiences morphology and phase transformations during charge/discharge in dilute ammonium acetate (NH Ac) electrolyte. The Ac concentration plays an important role storage . transformed with a layered structure delivers high specific capacity (176 mAh g −1 ) at current density of 0.5 A , exhibits...
VOPO4 ⋅x H2 O has been proposed as a cathode for rechargeable aqueous zinc batteries. However, it undergoes significant voltage decay in conventional Zn(OTf)2 electrolyte. Investigations show the decomposition of into VOx electrolyte and drops after losing inductive effect from polyanions.PO43- was thus added to shift equilibrium. A high concentration cheap, highly soluble ZnCl2 salt further prevents dissolution. The shows stable capacity retentions 13 m /0.8 H3 PO4 electrolyte, direct...
Abstract Transition metal layered double hydroxides (LDHs) are widely used as high‐performance cathode materials for aqueous alkaline zinc (Zn) batteries. Yet, the strongly electrolytes may lead to undesirable rechargeability of devices and environmental issues. Herein, a research prototype, CoNi LDH material is designed with abundant H vacancies using electrochemical methods (denoted (v) ). As Zn‐ion battery cathode, exhibits promising performances in mild ZnSO 4 electrolyte, such good...
Rechargeable aqueous Zn-VOx batteries are attracting attention in large scale energy storage applications. Yet, the sluggish Zn2+ diffusion kinetics and ambiguous structure-property relationship always challenging to fulfil great potential of batteries. Here we electrodeposit vanadium oxide nanobelts (VO-E) with highly disordered structure. The electrode achieves high capacities (e.g., ≈5 mAh cm-2 , 516 g-1 ), good rate cycling performances. Detailed structure analysis indicates VO-E is...
As a typical, classical, but powerful biochemical sensing technology in analytical chemistry, enzyme-linked immunosorbent assay (ELISA) shows excellence and wide practicability for quantifying analytes of ultralow concentration. However, long incubation time burdensome laborious multistep washing processes make it inefficient labor-intensive conventional ELISA. Here, we propose rod-like magnetically driven nanorobots (MNRs) use as maneuverable immunoassay probes that facilitate strategy an...
Aqueous zinc-sulfur (Zn-S) batteries show great potential for unlocking high energy and safety aqueous batteries. Yet, the sluggish kinetic poor redox reversibility of sulfur conversion reaction in solution challenge development Zn-S Here, we fabricate a high-performance battery using highly water-soluble ZnI
Zn metal anode experiences dendritic growth and side reactions in aqueous batteries. ZnS with relatively high ionic conductivity is a suitable solid–electrolyte interphase (SEI) component, an organic coverage would provide further protection for the underlying Zn. Herein, we reveal that SO42– anions solvating Zn2+ are more prone to reduction than nonsolvating ones thus capable of generation. Nevertheless, conventional ZnSO4 electrolyte, their solvation limited by shielding effect steric...
Abstract Manganese (Mn) oxides are promising cathode materials for rechargeable aqueous Zn‐ion batteries. However, the Mn dissolution in weakly acidic electrolytes always hinders development of better Zn–Mn Herein, a hydroxylated manganese oxide material (H‐MnO 2 ) is fabricated using an electrochemical method stable batteries without relying on 2+ electrolyte additives. The partial hydroxylation leads to charge redistribution material, changing reaction thermodynamics and kinetics....
A macromolecule additive strategy is presented as a dual deceleration interfacial network to regulate Zn deposition behavior and inhibit side reactions. It enables the stable cycling of electrodes in aqueous batteries.
This work reports a flexible supercapacitor based on vanadium oxide–polyaniline composites (VP-1) with large potential window and high energy density.
Realizing fast charging–discharging for high mass loading pseudocapacitive materials has been a great challenge in the field of supercapacitors because sluggish electron and ion migration kinetics through thick electrode materials. Here we demonstrate first time facile hydrothermal treatment that can substantially enhance rate capability highly loaded manganese oxide via Ostwald ripening process. Hydrothermal improves not only electrical conductivity but also diffusion film. At slow scan...