Flame-retardant and leakage-proof phase change composites based on MXene/polyimide aerogels toward solar thermal energy harvesting

Recent development of ionic liquid-based electrolytes in lithium-ion batteries

Polymer/expanded graphite-based flexible phase change material with high thermal conductivity for battery thermal management

One-step construction of novel phase change composites supported by a biomass/MXene gel network for efficient thermal energy storage

In order to solve the problem of low thermal conductivity of hierarchical porous carbon-based (HPC) composite phase change materials, a new method was proposed in this paper, in which HPC was modified with polydopamine (PDA) and silver nanoparticles successively, and then incorporated with polyethylene glycol (PEG) to form shape-stabilized phase change composite material (SSPCM). The HPC was prepared by self-sacrificing template method using sucrose and sodium bicarbonate as starting materials. The micro structure, thermal conductivity, thermal stability, chemical compatibility and Photo-thermal conversion capability of the SSPCM were analyzed. The results showed that the SSPCM prepared from the support material modified by PDA and silver nanoparticles still had good chemical compatibility. Besides, the thermal conductivity of SSPCM was significantly improved by 58% compared to the original material, showing superior thermal properties. It was worth noting that the photo-thermal conversion capability of the SSPCM was significantly higher than that of the original material. The SSPCM synthesized on the basis of functionalized hierarchical porous carbon had promising applications in photo-thermal conversion and thermal energy storage and transformation. 

Enhanced thermal performance of phase change materials supported by hierarchical porous carbon modified with polydopamine/nano-Ag for thermal energy storage

Experimental investigation on thermal properties of paraffin/expanded graphite composite material for low temperature thermal energy storage

Poly(Ionic Liquid)-Functionalized Graphene Oxide Towards Ambient Temperature Operation of All-Solid-State Peo-Based Polymer Electrolyte Lithium Metal Batteries

In-Situ Construction of High-Temperature-Resistant 3d Composite Polymer Electrolyte Membranes Towards High-Performance All-Solid-State Lithium Metal Batteries

Artificial polymeric solid electrolyte interfaces (APSEIs) are an emerging material that enables use of a lithium metal anode as a lithium metal battery technique with high energy density. However, the poor ionic conductivity, low lithium transference number, and bad compatibity with lithium metal anode lead to a large dissipative loss of energy capacity. Here we report that, by properly constructing a brush-like structure in cellulose nanofibril (CNF) based APSEIs, a good ion-aggregation morphology with interconnected ionic conducting channels can be built, such that the Li-ion conduction in the APSEI layer becomes highly efficient. The optimal approach to constructing such an ionic highway is proved computationally using coarse-grained molecular dynamics (CGMD) simulations and implemented experimentally based on transmission electron microscopy (TEM) and atomic force microscopy (AFM). In addition, Li-ion exchange structures and hydroxyl-abundant structures endow the APSEIs with good ability to suppress dendrite growth and excellent compatibility with the anode surface.

A Brush-like Li-Ion Exchange Polymer as Potential Artificial Solid Electrolyte Interphase for Dendrite-Free Lithium Metal Batteries.

Developing a poly(ethylene oxide) (PEO)-based polymer electrolyte with high ionic conductivity and robust mechanical property is beneficial for real applications of all-solid-state lithium metal batteries (ASSLMBs). Herein, an excellent organic/inorganic interface compatibility of all-solid-state composite polymer electrolytes (CPEs) is achieved using a novel imidazolium-type poly(ionic liquid) with strong electrostatic interactions, providing insights into the achievement of highly stable CPEs. The key properties such as micromorphologies, thermal behavior, crystallinity, tLi+, mechanical property, lithium anode surficial morphology, and electrochemical performance are systematically investigated. The combined experimental and density functional theory (DFT) simulation results exhibit that the strong electrostatic interaction and ion-dipole interaction cooperated to improve the compatibility of the CPE, with a high ionic conductivity of 1.46 × 10-4 S cm-1 at 40 °C and an incredible mechanical strain of 2000% for dendrite-free and highly stable all-solid-state LMBs. This work affords a promising strategy to accelerate the development of PEO-based polymer electrolytes for real applications in ASSLMBs.

Imidazolium-Type Poly(ionic liquid) Endows the Composite Polymer Electrolyte Membrane with Excellent Interface Compatibility for All-Solid-State Lithium Metal Batteries.

Xiaolei Jing

Papers

Experimental investigation on thermal properties of paraffin/expanded graphite composite material for low temperature thermal energy storage

Poly(Ionic Liquid)-Functionalized Graphene Oxide Towards Ambient Temperature Operation of All-Solid-State Peo-Based Polymer Electrolyte Lithium Metal Batteries

In-Situ Construction of High-Temperature-Resistant 3d Composite Polymer Electrolyte Membranes Towards High-Performance All-Solid-State Lithium Metal Batteries

A Brush-like Li-Ion Exchange Polymer as Potential Artificial Solid Electrolyte Interphase for Dendrite-Free Lithium Metal Batteries.

Imidazolium-Type Poly(ionic liquid) Endows the Composite Polymer Electrolyte Membrane with Excellent Interface Compatibility for All-Solid-State Lithium Metal Batteries.