Publications by authors named "Jieming Cai"
Room-temperature sodium-sulfur (RT Na-S) batteries with high energy density and low cost are considered promising next-generation electrochemical energy storage systems. However, their practical feasibility is seriously impeded by the shuttle effect of sodium polysulfide (NaPSs) resulting from the sluggish reaction kinetics. Introducing a suitable catalyst to accelerate conversion of NaPSs is the most used strategy to inhibit the shuttle effect.
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- High-entropy materials, introduced in 2004, have emerged as a promising category of high-performance materials, particularly in energy storage and electrocatalysis, with research increasing over the last two decades.
- The definition and understanding of these materials have evolved, but the current description remains somewhat unclear, and traditional preparation methods for lower entropy materials do not always translate effectively to high-entropy materials.
- The review covers the development and classification of high-entropy electrode materials, their applications, synthesis methods, and provides an analysis of the benefits and drawbacks of various production techniques, while suggesting future research directions.
Article Synopsis
- Sodium-ion batteries (SIBs) show promise for portable electric vehicles and renewable energy storage due to their affordability, with hard carbon materials being the main focus for anodes.
- Hard carbon derived from renewable biomass is often utilized, but there's a lack of comprehensive research from lab findings to industrial use.
- The paper discusses sodium storage mechanisms, optimization strategies for hard carbon, classification based on biomass sources, practical challenges, and prospects for the future of biomass-derived hard carbon anodes in SIBs.
It is urgent to develop high-temperature dielectrics with high energy density and high energy efficiency for next-generation capacitor demands. Metal-organic frameworks (MOFs) have been widely used due to their structural diversity and functionally adaptable properties. Doping of metal nodes in MOFs is an effective strategy to change the band gap and band edge positions of the original MOFs, which helps to improve their ability to bind charges as traps.
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