Nanomaterials
·
2022
·Vol. 12
·期 22
·4041
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IF 5.719
Tao Zhang,Yan Liu,Guihuan Chen,Hengjun Liu,Yuanyuan Han,Shuhao Zhai,Leqing Zhang,Yuanyuan Pan,Qinghao Li,Qiang Li
Transition metal fluoride (TMF) conversion cathodes, with high energy density, are recognized as promising candidates for next-generation high-energy Li/Na-ion batteries (LIBs/SIBs). Unfortunately, the poor electronic conductivity and detrimental active material dissolution of TMFs seriously limit the performance of TMF-LIBs/SIBs. A variety of FeF3-based composites are designed to improve their electrochemical characteristics. However, the storage mechanism of the conversion-type cathode for Li+and Na+co-storage is still unclear. Here, the storage mechanism of honeycomb iron (III) fluoride and carbon (FeF3@C) as a general cathode for LIBs/SIBs is analyzed by kinetics. In addition, the FeF3@C cathode shows high electrochemical performance in a full-cell system. The results show that the honeycomb FeF3@C shows excellent long-term cycle stability in LIBs (208.3 mA h g−1at 1.0 C after 100 cycles with a capacity retention of 98.1%). As a cathode of SIBs, the rate performance is unexpectedly stable. The kinetic analysis reveals that the FeF3@C cathode exhibit distinct ion-dependent charge storage mechanisms and exceptional long-durability cyclic performance in the storage of Li+/Na+, benefiting from the synergistic contribution of pseudocapacitive and reversible redox behavior. The work deepens the understanding of the conversion-type cathode in Li+/Na+storage.Keywords:full-cell;kinetic analysis;metal fluorides;storage mechanism
研究领域:
材料科学
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电化学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Energy Chemistry
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2018
·
IF 3.886
Shuai Wang,Jiguo Tu,Jiusan Xiao,Jun Zhu,Shuqiang Jiao
The growing global demands of safe, low-cost and high working voltage energy storage devices trigger strong interests in novel battery concepts beyond state-of-art lithium-ion battery. Herein, a dual-ion battery based on nanostructured Ni 3 S 2 /Ni foam@RGO (NSNR) composite anode is developed, utilizing graphite as cathode material and LiPF 6 -VC-based solvent as electrolyte. The battery operates at high working voltage of 4.2–4.5 V, with superior discharge capacity of ∼90 mA h g −1 at 100 mA g −1 , outstanding rate performance, and long-term cycling stability over 500 cycles with discharge capacity retention of ∼85.6%. Moreover, the composite simultaneously acts as the anode material and the current collector, and the corrosion phenomenon can be greatly reduced compared to metallic Al anode. Thus, this work represents a significant step forward for practical safe, low-cost and high working voltage dual-ion batteries, showing attractive potential for future energy storage application .
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2020
·
IF 8.758
Shijie Wang,Dongdong Jin,Ye Bian,Rutao Wang,Li Zhang
Conversion-type magnetite shrewdly shows abundance, nontoxicity, and high lithium storage capacity. However, either pristine magnetite or nanocomposites with two-dimensional materials cannot prevent restacking, pulverization, and poor structural homogeneity simultaneously because of a lack of universal interfacial interactions. Here, an electrostatic self-assembly strategy is uncovered between hollow Fe3O4/C microspheres (with H+-induced quasi-intrinsic positive charge) and few-layer MXenes (with intrinsic negative charge from terminating functionalities). This strategy realizes the uniform and interconnected architecture of Fe3O4/C@MXene that favors fast Li+ diffusion, easy electron/charge transfer, and suppressed pulverization. Specifically, after the long-term cycling, an undegraded specific capacity of 907 mA h g–1 remains at 0.5 A g–1. Further adoption of such superior anode in 4.0 V lithium-ion capacitors results in a high energy density of 130 W h kg–1, a maximum power density of 25,000 W kg–1, and excellent cycling stability. This work thus sheds light on a generic self-assembly process where intrinsic electrostatic interaction plays an essential role.
研究领域:
材料科学
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能源存储
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
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2014
·Vol. 4
·期 101
·57869-57874
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IF 3.708
Jinzuan Wang,Ping Liu,Yanshan Huang,Jianzhong Jiang,Sheng Han,Dongqing Wu,Xinliang Feng
Two-dimensional graphene/SnO2/graphene (G/SnO2/G) hybrids with SnO2 nanoparticles sandwiched in graphene sheets have been constructed by a facile ionic self-assembly process. The resulting G/SnO2/G hybrids possessed flexible and ultrathin graphene shells that effectively enwrapped the SnO2 nanoparticles. When the hybrids were used as the anode materials in lithium-ion batteries (LIBs), their unique core–shell architecture provided double protection against the aggregation and volume changes of SnO2 nanoparticles, and ensured favorable transport kinetics for charge carriers. As a result, the hybrids exhibited a superior cycling stability (600 mA h g−1 over 60 cycles) and excellent rate capability (120 mA h g−1 at 5.0 A g−1).
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
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2018
·
IF 0
Qian Liang,Fuming Chen,Shaofeng Wang,Qiang Ru,Qinyu He,Xianhua Hou,Ching-yuan Su,Yumeng Shi
Renewable energy-related technologies have become more important due to the increasing energy consumption. Herein, we put forward a novel organic flow desalination battery (ORFDB) using redox-active organic molecule electrolyte materials dissolved in the aqueous sodium chloride feed. Riboflavin-5’-phosphate sodium salt dihydrate (FMN-Na) is used as the anolyte, and the catholyte is 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO). Sodium and chloride ions in salt feed were moved respectively to anolyte and catholyte by electrochemical reaction of electrolytes during the charge process, and return to the feed during the discharge process. This ORFDB system possesses the stable stability up to fifty cycles and the excellent rate performance. This ORFDB exhibits the cost-effective renewable energy storage and the possibility of salt removal based on the electrochemistry of organic molecules.
研究领域:
能源科学
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电化学
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材料科学
✓ 已验证
产品关联
DOI
CARBON
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2022
·
IF 11.307
Daokui Li,Yili Tang,Xiaochao Zuo,Xiaoguang Zhao,Kaixuan Shang,Huaming Yang
Energy storage materials show enormous potential for the development of energy-saving buildings. However, high-performance composite phase-change materials (PCMs) usually exhibit complex and low photothermal conversion efficiencies. This significantly hinders their application in the construction field. Herein, we reported an effective strategy to construct attapulgite, expanded perlite, and graphite (AEG) ternary composite mineral microspheres through spray drying. Supporting materials were selected to integrate the unique advantages of the materials and achieve a functional design with synergistic benefits. Paraffin–AEG (P-AEG) composite PCMs with light-to-heat conversion and thermal energy storage functions were fabricated via vacuum impregnation. The prepared P-AEG exhibited an excellent light–thermal conversion capability, with a conversion efficiency as high as 92%. In addition, the thermal energy storage building materials constructed with the P-AEG composite PCMs and concrete (P-AEG-C) exhibited exceptional thermal management abilities. At the peak position in the heating stage and the bottom position in the cooling stage, the temperature of the P-AEG-C was 3.9 °C lower and 7.5 °C higher than that of concrete, respectively. The P-AEG-C exhibited excellent mechanical properties with a compressive strength of 14.8 MPa, and thus, it has enormous potential in light–thermal conversion applications and energy-saving buildings.
研究领域:
材料科学
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能源工程
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建筑工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 2
·696-703
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IF 11.806
Ge Ruixiang,Chen Liang
RuO 2 has been extensively investigated as a pseudocapacitive material. However, developing a facile and effective method to improve the pseudocapacitive performance of RuO 2 is still desired. In this work, we report the synthesis of ultra-small RuO 2 nanoparticles supported on carbon cloth (us-RuO 2 /CC) via a facile two-step method. As a binder-free electrode, us-RuO 2 /CC exhibits a high capacitance of 1067.4 F g −1 at a current density of 1 A g −1 . Moreover, us-RuO 2 /CC also shows good rate performance (87.8% capacitance retention at 20 A g −1 ) and cycle stability (99.6% capacitance retention after 5000 cycles). Graphical abstract Ultra-small RuO 2 nanoparticles on carbon cloth (us-RuO 2 /CC) were synthesized via annealing and acid etching treatment of a ZnRu precursor, which was prepared by a dip-coating process. Introducing Zn significantly reduces the particle size of RuO 2 , leading to a high specific capacitance of 1067.4 F g −1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
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2022
·
IF 8.907
Bojing Wu,Huanzhi Zhang,Chaowei Huang,Qingfeng Zhang,Zongxu Sun,Fen Xu,Lixian Sun,Yongpeng Xia,Hongliang Peng,Xiangcheng Lin,Yongjin Zou,Hailiang Chu,Pengru Huang,Erhu Yan,Bin Li
As one of the most abundant energy, solar energy has already drawn great attention both from academia and industry, but how to use it to the utmost extent is still a formidable challenge for the development of human. Phase change material (PCM) is proved to be one of the most promising technique for storing thermal energy. Herein, we designed and fabricated a three-dimensional (3D) phase change composite (PCC) with excellent light-to-thermal conversion by constructing one-dimensional (1D) linear single-walled carbon nanotubes (SWNTs), two-dimensional (2D) boron nitride nanosheets (BNNSs) and polyethylene glycol (PEG) into a 3D bulk structure. This structure supplies the prepared PCMs with high thermal conductivity, excellent solar-thermal conversion efficiency, and high energy storage density. Results showed that the PCCs displayed a well-defined 3D interconnected structure, and their melting and crystallization enthalpies were 156.36 J/g and 153.33 J/g, respectively, which changed only slightly after 110 thermal cycles. The thermal conductivity of the composites could reach 0.92 W∙m −1 ∙K −1 , which effectively enhanced the thermal response rate. Beyond that, the PCCs exhibited good leakage-proof performance and excellent thermal regulation performance. And the light-to-thermal conversion efficiency of PCCs reached 97.15%. These results indicate that this strategy can be efficiently used to develop novel PCCs with improved comprehensive thermal performances and high light-to-thermal conversion.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Yunfei Xie,Yingchao Zhang,Meini Li,Ruonan Huang,Xincai Liu,Danming Chao
Electrochromic capacitive windows (ECW) combining energy storage and electrochromism have attracted considerable interest because of their unique energy-saving and energy-recovery features. Therefore, it is highly desirable to explore an electrode material with excellent electrochromic and energy storage properties simultaneously. Herein, we synthesize an electroactive polyamide containing pentaaniline segments (EPA) in the main chain via oxidative coupling polymerization, which showcases electrochemical optical modulation and high capacitance synchronously. Attributed to non-acidic electrolyte and rational matching with V 2 O 5 ion-storage material, the as-fabricated ECW exhibits good dual-band optical modulation performance with high optical contrast of 56.57% at 650 nm (Visible region) and 53.29% at 1250 nm (NIR region), fast optical switching response (<5 s), as well as effective regulation of indoor temperature. The resultant ECW also possesses practical energy storage properties, along with a wide voltage window of 2 V, a large capacitance of 47.26 mF/cm 2 , and outstanding electrochemical cycling durability. In its coloring state, the energy stored in ECW could be utilized to drive small-scale electronic equipment, indicating its energy recovery and reuse feature. In conclusion, the ECW in this work functions as a color-switching smart window and a rechargeable supercapacitor, which exhibits great promise for development in green buildings.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Huan Liu,Ziyue Wang,Jiyang Xie,Changjin Guo,Wanbiao Hu
Poly(vinylidene fluoride) (PVDF) is a basic polymer that has been extensively used in flexible electronics, with the properties differing in terms of multiple phases, e.g. α , β , and γ . As generally involved, processing induced phase variations have not yet been identified clearly, which furthermore often embarrasses the attributions and contributions in the properties and mechanisms. To this end, the phase compositions and evolutions in pure PVDF films are systematically tuned and explored by annealing and quenching processing. The annealed PVDF exhibits a predominant γ -phase, while α -phase is dominated in quenched PVDF. Upon the induced different phase compositions, the optimally processed PVDF films similarly exhibit an ultrahigh dielectric energy storage density e.g. 19.66 J cm −3 for annealed and 21.73 J cm −3 for quenched PVDF film, respectively, but only the former maintains a simultaneously high discharge efficiency of 65 %. With showing excellent energy storage performance, the processed especially the annealed PVDF film could compare to many existing high-performance dielectric energy storage systems . This work thus not only uncovers the phase evolutions as well as their impacts on the properties in PVDF system, but also demonstrates firstly a high energy storage performance in pure PVDF.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2016
·
IF 0
Yan Yang Yang,Hao Wang,Guo Lin Song,Guo Yi Tang
Phase change method is one of the efficient approach in resolving energy problem for solar energy storage. However, phase change materials seriously affect the heat storage system with low heat releasing and absorbing rate for poor thermal conductivity performance, which result in an inefficient thermal energy storage technology and uncertain economic perspective. In this paper, we prepared dual-functional phase change nanocapsules based on n-octadecane core and polypyrrole shell. Polypyrrole was employed to enhance the electric conductivity and thermal conductivity. The nanocapsules was characterized using Fourier transformed infrared spectrophotometer (FTIR), field emission scanning electron microscope (FESEM), differential scanning calorimeter (DSC), thermal gravimetric analyzer (TGA) and infrared thermal imaging. The results shows a good thermal behavior and high latent heat of 81.99J/g. The dual-fuctional phase change nanocapsules can be expected with a prospect of future profits in energy storage technology.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Haiyue Yang,Yushan Liu,Jian Li,Chengyu Wang,Yudong Li
Due to its unique structure and component, wood is widely used as matrix to develop functional composites. However, the lignin is removed from wood and thrown away as waste in most wood-based functional composites. In this work, a new strategy of “taken from the wood, back into the wood” to fabricate a full-wood photoluminescent and photothermic material is proposed. By facile delignification and solvothermal process, the delignified wood (DW) and carbon quantum dots (CQDs) derived from removal lignin are prepared. In addition, compared with other CQDs excited by UV light, the CQDs possess red (650 nm) and NIR (710 nm) emission light under visible light excitation (580 nm). Most importantly, the heat radiated from NIR emission could be stored by the introduced phase change materials (PCM) to adjust ambient temperature. The composite owns photoluminescent, photothermic and energy storage property (heat latent of 137.6 J/g), which is environmentally friendly, green and creative. The all-new technique for functional wood composite shows potential for application in energy-saving and optical devices.
研究领域:
材料科学
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能源技术
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）