Publications by authors named "Hanhao Liu"

Article Synopsis
  • Manganese/nickel-based layered transition metal oxides are being studied as effective cathodes for sodium-ion batteries due to their potential for higher energy density through both cationic and anionic redox reactions.
  • The introduction of Li-Mg cosubstituted P2-NaLiMgNiMnO, which has a honeycomb structure, aims to address the irreversible oxygen loss associated with the anionic redox reaction while demonstrating a competitive relationship with the Ni/Ni redox couple.
  • The study utilizes density functional theory and electrochemical measurements to investigate the stabilization role of Mg-O bonds and the impact of O 2p nonbonding states in enhancing the performance of these battery materials.
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The practical application of aqueous Zn metal batteries (AZMBs) is impeded by inferior reversibility and stability of Zn metal anode (ZMA) originated from side reactions and dendrite growth. Herein, anion receptor l-Proline (LP) is selected to simultaneously manipulate solvation chemistry and electric double layer (EDL) for constructing dendrite-free and stable AZMBs with an ultra-high depth of discharge (DOD of 100 %) and low negative/positive capacity ratio (N/P of 1.1).

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Objective: Peripheral vascular disease is a worldwide leading health concern. Real-time peripheral hemoperfusion monitoring during treatment is essential to plan treatment strategies to improve circulatory enhancement effects.

Methods: The present work establishes a Janus flexible perfusion (JFP) sensor system for dynamic peripheral hemoperfusion monitoring.

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Expanded graphite (EG) stands out as a promising material for the negative electrode in potassium-ion batteries. However, its full potential is hindered by the limited diffusion pathway and storage sites for potassium ions, restricting the improvement of its electrochemical performance. To overcome this challenge, defect engineering emerges as a highly effective strategy to enhance the adsorption and reaction kinetics of potassium ions on electrode materials.

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The stable phase transformation during electrochemical progress drives extensive research on vanadium-based polyanions in sodium-ion batteries (SIBs), especially NaV(PO) (NVP). And the electron transfer between V redox couple in NVP could be generally achieved, owing to the confined crystal variation during battery service. However, the more favorable V redox couple is still in hard-to-access situation due to the high barrier and further brings about the corresponding inefficiency in energy densities.

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All-weather operation is considered an ultimate pursuit of the practical development of sodium-ion batteries (SIBs), however, blocked by a lack of suitable electrolytes at present. Herein, by introducing synergistic manipulation mechanisms driven by phosphorus/silicon involvement, the compact electrode/electrolyte interphases are endowed with improved interfacial Na-ion transport kinetics and desirable structural/thermal stability. Therefore, the modified carbonate-based electrolyte successfully enables all-weather adaptability for long-term operation over a wide temperature range.

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Article Synopsis
  • The research on energy storage is shifting towards next-generation aqueous batteries, with a focus on sustainability and performance, particularly aqueous Zn-I batteries, which are recognized for their cost-effectiveness and eco-friendly features.
  • However, their commercial use faces challenges due to the shuttle effect caused by polyiodides during operation.
  • A new Janus functional binder made from chitosan has been developed, significantly improving the battery's electrochemical performance and sustainability, achieving impressive capacity and efficiency while resolving issues like self-discharging.
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Article Synopsis
  • Highlighted challenges include poor electronic conductivity and significant volume changes during charging and discharging processes.
  • A new strategy involving the creation of a CuSe/Cu VSe biphasic heterostructure using MXene as a precursor significantly improves the anode's performance, providing excellent Na ion storage capacity (576.8 mAh/g at 0.1 A/g) and addressing issues with conductivity and lifespan.
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Intermittent pneumatic compression (IPC) therapy has been adopted in prevention and treatment of ischemic-related peripheral vascular diseases. The aim of this study is to provide an approach to personalize the compression strategy of IPC therapy for maximizing foot skin blood flow. In this study, we presented a method to predict the optimized compression mode (OCM) for each subject based on biomechanical features extracted from experimental data tested with multiple IPC modes.

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Flexible sodium-ion batteries (SIBs) have aroused great interest in energy storage devices. However, the choice of suitable anode materials is a key step in the application of SIBs. Here, a simple vacuum filtration method is reported to obtain a bimetallic heterojunction structure.

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Cobalt selenide, as a star material in battery industry, has attracted much attention. However, when it is applied solely in sodium ion batteries, it will cause large volume expansion and material agglomeration, which will seriously affect the overall performance of batteries. In this work, we use ice bath impregnation to combine CoSe nanoparticles with porous nitrogen-doped carbon networks (NC) as advanced anodes for ultra-long cycle life sodium ion batteries (SIBs).

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Intermittent pneumatic compression (IPC) therapy has been used to enhance peripheral blood flow for prevention and rehabilitation of ischemic-related vascular diseases. A novel phenomenon has been reported that multiple blood flow surges appeared in the skin blood flow signal during each compression, but its mechanism has not been fully revealed. This study aimed to gain insights into the origins of these blood flow surges through experiment and biomechanical modeling methods.

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With the development of various flexible electronic devices, flexible energy storage devices have attracted more research attention. Binder-free flexible batteries, without a current collector, binder, and conductive agent, have higher energy density and lower manufacturing costs than traditional sodium-ion batteries (SIBs). However, preparing binder-free anodes with high electrochemical performance and flexibility remains a great challenge.

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