A novel shape-stabilization strategy for phase change thermal energy storage

Liu, Changhui; Xu, Ze; Song, Yan; Lv, Peizhao; Zhao, Jiateng; Liu, Chenzhen; Huo, Yujia; Xu, Ben; Chen, Zhu; Rao, Zhonghao

doi:10.1039/c9ta01496a

Cited by 64 publications

(23 citation statements)

References 64 publications

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“…In the first cathodic scan, two reduction peaks are observed, the first peak at around 1.25-0.5 V is ascribed to the irreversible decomposition of SnS to Sn, MoS 2 to Mo metal and Li 2 S as well the formation of a solid electrolyte interface (SEI) film, the second peak between 0.5 V and 0.01 V is known to arise from the formation of Li x Sn alloys. [34,36,37] For comparison, the first cathodic scan of MoS 2 @C composite are shown in Figure S4. Only one broad shoulder starting from about 1.2 V and one dominant reduction peak at 0.5 V are observed, corresponding to the decomposition of MoS 2 to Mo metal and Li 2 S as well as the formation of a SEI film.…”

Section: Electrochemical Performancementioning

confidence: 99%

Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

et al. 2018

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Volumetric capacity, though being the most important metric for batteries, remains difficult to improve. This work demonstrates that the large volume expansion of active materials can be buffered when they are loaded on a backbone with medium volume expansion during lithium insertion, thus achieving a high volumetric specific capacity with acceptable cycling stability. Specifically, we imbedded SnS inside a MoS2@C brochosome‐like matrix. The composite delivers tremendously improved volumetric specific capacity due to the synergy between the high‐capacity SnS with alloy‐type lithium storage mechanism and the MoS2@C brochosome‐like backbone with moderate lithium storage capability and stable structure. This composite delivers highly reversible capacity and excellent capacity retention (720 mAh cm−3 after 200 cycles at 200 mA g−1), and superior rate capacity of 465 mAh cm−3 at 4 A g−1. Such structure, involving a porous, stable and active matrix and a high‐capacity filler in the pores, could be a general structural guidance for making electrode materials with high volumetric specific capacity.

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Section: Electrochemical Performancementioning

confidence: 99%

Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

et al. 2018

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“…[ 4 ] However, for the PCMs based on solid‐liquid phase transition, to prevent leakage and deformation of the materials is the primary requirement in actual applications, [ 5 ] because the constituent, for example, paraffin, fatty acid, poly(ethylene glycol) (PEG) would melt into liquid above the phase transition temperature. [ 6–8 ] Despite numerous studies being committed to improve their stability via physical package such as by means of constructing core‐shell structure, [ 9,10 ] 3D aerogel network, [ 11,12 ] hyper‐cross‐linked skeleton, [ 13 ] leakage risk still remaining at high temperature due to liquid intrinsic property. [ 14 ] In contrast, PCMs based on solid‐solid phase transition were seldom leakage or deformation by chemical cross‐linking.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐Stable Phase Change Coatings by Self‐Cross‐Linkable Reactive Poly(ethylene glycol) and MWCNTs

Cui

Wang

et al. 2021

Adv Funct Materials

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Form‐stable phase change materials (PCMs) have great potential to regulate the unbalanced heat demand and supply, yet most of the PCMs are in powder, plate, or bulk rigid forms, difficult to adhere to the heat source or target substrates. Herein, PCMs coatings based on reactive poly(ethylene glycol) (RPEG) are developed for direct thermal energy exchange and storage. RPEG with highly reactive silanol groups is obtained by reaction of PEG with 3‐isocyanatopropyltriethoxysilane (IPTS), followed by hydrolyzation in weak acid. Cross‐linked PCMs coatings are obtained on various substrates, including cotton fabric, wood, tinplate, and even irregular objects. The coatings show obvious solid‐solid phase transition properties and high energy storage densities (142.8 J g−1). Multi‐walled carbon nanotubes (MWCNTs) are further doped into the coatings aided by a self‐cross‐linkable dispersant. The composite coatings exhibit excellent high‐temperature form stability and rapid thermal exchange properties owing to the formation of the cross‐linked network between RPEG and MWCNTs. Thermal regulation clothes are prepared by a spray coating method, which show no performance deterioration after washing three times, indicating good washing durability.

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“…Thermal energy storage (TES) plays a vital role among various energy storage techniques. 2,3,4,5 TES can be used to collect and store heat energy and release heat energy with the demand in the future.…”

Section: Introductionmentioning

confidence: 99%

Novel Hybrid Hypercrosslinked Polymer Assisted Highly Efficient Thermal Energy Storage

Liu¹,

Zhang²,

Liu³

et al. 2021

Preprint

Self Cite

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Though a range of methods has been dedicated to solving the leakage problems, a versatile method which can meet with the organic and inorganic phase change materials (PCMs) simultaneously still have not been seen. In this work, an organic/inorganic hybrid Silioxyl functional group containing polymer was synthesized and applied to encapsulated PCMs. Owing to the mild hypercrosslinking reaction conditions, which only requires the addition of catalytic amount of aqueous alkali solution, renders it to be tolerance towards both organic and inorganic PCMs. More importantly, the homogeneous state of the initiate state of the mixture allowed the ultimate PCMs encapsulation rate and the uniformly blending of the third nano-additives with the aim of thermal conductivity enhancement. Further study reveals that the presence of this hybrid polymers endows a unique self-cleaning property to the obtained phase change composite that it displays a good hydrophobicity towards water droplets. More importantly, this novel PCMs encapsulation protocol shows a good tolerance with varies of nanoparticles, including carbon based nanomaterial, metal oxide nanoparticles and inorganic oxide nanoparticles, which enables an utmost 600% thermal conductivity enhancement and 93.7% light-to-thermal conversion efficiency with a latent heat of 180 J/g without the observation of any leakage.

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A novel shape-stabilization strategy for phase change thermal energy storage

Abstract: A novel Lewis acid catalysis induced in situ phase change material (PCM) shape-stabilization strategy was developed to fabricate hyper-crosslinked polystyrene (HCPS) encapsulated PCMs towards highly efficient thermal energy storage.

Cited by 64 publications

References 64 publications

Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

Ultra‐Stable Phase Change Coatings by Self‐Cross‐Linkable Reactive Poly(ethylene glycol) and MWCNTs

Novel Hybrid Hypercrosslinked Polymer Assisted Highly Efficient Thermal Energy Storage

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