Dielectric polymers with capacitive energy storage capabilities are essential for advanced electronics and electrical systems. However, a persistent challenge lies in enhancing their energy density at elevated temperatures. Despite the exploration of high-glass transition temperature (Tg) polymers with superior dielectric-thermal stability, they face limitations in terms of low dielectric constant

The exceptional cycling stability of lithium-ion batteries in electric vehicles and large-scale grid energy storage applications necessitates the use of accelerated aging tests for rapid assessment. Overdischarge stress is an effective approach to accelerate battery aging, whereas its impact on solid electrolyte interphase (SEI) and battery aging performance remains elusive. Herein, the whole picture

The application of environmentally friendly and economical aqueous zinc (Zn) metal batteries (ZMBs) is severely limited by critical issues associated with Zn anodes, including dendrite growth, hydrogen evolution reaction and corrosion. Hence, many improvement methods, such as electrolyte additives, mainly focus on the protection of Zn anodes. Herein, owing to the abundance of zincophilic functional

Microsized alloying particles have broad application prospects as anodes of high energy density batteries, but their fast charging and long cyclic stability are seriously affected by the sluggish bulk diffusivity, poor stress response and uncontrolled electrode/electrolyte interface. Herein, we develop a microsized Bi-Sn alloying particle model system with the engineered eutectic phase boundaries (PBs)

Integrated sensing systems are playing increasingly important roles in health monitoring as a spearhead of artificial intelligence. Rationally integrating the two key components of microsystems, that is, power sources and sensors, has become a desperate requirement. Micro-supercapacitors (MSCs) with high power delivery and long operating life have emerged as the next generation of microscale power

Low-grade waste heat recovery is a promising pathway to achieving the goal of carbon neutrality. In recent years, thermo-electrochemical cells (also known as thermocells or thermogalvanic cells) driven by low-grade heat have been emerging as a cutting-edge technology due to their ultrahigh Seebeck coefficient, high flexibility and low cost, and they possess large application prospects in wearable electronic

Understanding the thermal stability of lithium-ion (Li-ion) cells is critical to ensuring optimal safety and reliability for various applications such as portable electronics and electric vehicles. In this work, we demonstrate a combined modeling and experimental framework to interrogate and quantify the role of different degradation modes on the thermal stability and safety of Li-ion cells. A physics-based

Metallic sodium has attracted increasing attention as an ideal anode material for next-generation high energy density and low-cost secondary batteries. However, it is highly desired yet remains challenging to improve their cycling stability and safety due to unstable solid electrolyte interphase and dendrite growth. Herein, a hybrid interface layer composed of Na2Se and Na3P is constructed on the surface

The issue of energy supply in outdoor and remote areas has become a significant challenge. Solar-powered self-sustaining rechargeable zinc-air batteries (RZABs) offer a viable energy solution for off-grid regions. However, there has been no specific study on the technical compatibility and adaptability of the solar power generation system and RZABs system, as well as the efficiency of energy conversion

Ni-rich cathode, recognized for high specific capacities and cost-effectiveness, are deemed promising candidates for high-energy Li-ion batteries. However, these cathodes display notable structural instability and experience severe strain propagation during rapid charging and extended cycling under high voltage, hindering their widespread commercialization. To tackle this chemo-mechanical instability

Integration of photoactive and lithium storing units into a single cathode endows it with notable capacity in the presence of suitable light. However, the interfacial effect between the two materials causes significant loss of photogenerated electrons during their transfer which is one of the biggest obstacles in the development of current photo-assisted rechargeable batteries. In this paper, a bifunctional

Air stability is a crucial factor in the practical application of a battery material, as it profoundly affects the material's preparation, storage, and electrode fabrication processes. Sodium iron sulfate cathodes, despite their attractive attributes in cost and electrochemical performance, are widely believed to be unstable upon air exposure because of the sulfate group. Here we report remarkable

O3-type layered oxide cathode material for sodium-ion batteries (SIBs) has attracted much attention as one of the most viable candidates due to its high specific capacity and mature synthesis process, while the moisture sensitivity and harmful phase transformation lead to poor processing properties and unsatisfactory life-span, hindering its large-scale and commercial application. Herein, single crystallization

Dual-ion batteries with p-type redox-active organic materials as cathodes have potential application prospects in the field of energy storage. In this review, we will first introduce the basic anion storage concepts, principles, and characterization methods of organic cathode materials, and then introduce how to design high-performance p-type redox organic cathode materials from the perspectives of

Stable operation of lithium (Li) metal batteries (LMBs) under harsh conditions (e.g., at high rates, at extreme temperatures, and with water-containing electrolytes) has been suffering from the sluggish charge transfer kinetics at electrode-electrolyte interfaces, and limited thermodynamic stability in general carbonate electrolytes. Herein, lithium nitrate (LiNO3) and N,N’-dimethylpropyleneure (DMPU)

The electrochemical instability of zinc anode caused by surface side reactions and irregular zinc deposition severely hinders the practical application of aqueous zinc ion batteries (AZIBs). In this work, diethylenetriaminepentaacetic acid, pentasodium salt (DTPA) was used as a novel electrolyte additive to modulate the electrochemical stability of Zn anode. The DTPA anion can strongly coordinate with

Artificial coatings represent the promising means to address the interfacial issues of Zn anode, but it poses a significant challenge to their stability due to the fatigue and resulting cracking of coatings during repeated cycling. Here, a functional coating with the synergistic effect of bimetallic co-doping was developed, which changes the Zn2+ deposition mode to interlayer deposition in coating

Constructing closed pore structures is essential for improving the plateau capacity of high-capacity hard carbon (HC) anodes for sodium-ion batteries. However, the absence of a straightforward and efficient strategy for constructing closed pores has hindered the advancement of high-capacity HC anodes. Here, we have developed a spatial confinement strategy for constructing closed pore structures using