CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Siyang Wang,Jianfeng Hu,Peng Xie,Yinghao Yu,Zhengguo Zhang
Metal-based phase change composites (MPCMs) with high thermal conductivity and energy density are promising candidates for advanced thermal management applications, especially in medium-temperature. However, interfacial reactions between the metal framework and the encapsulated metal phase change material frequently compromise their stability. In this study, we developed a stabilized copper foam(CF)/bismuth‑indium(Bi In) MPCM through vacuum pressurized impregnation process and interfacial modification with 2-thenoyltrifluoroacetone (TTA). The porous CF was functionalized with the chelating ligand, TTA, forming a passivation layer that effectively suppresses the interfacial formation of copper‑indium intermetallic compounds (IMCs). The Bi In alloy was then infused into the foam structure using a vacuum pressurized impregnation process, yielding a uniform composite with exceptional properties, including high thermal conductivity (37.92 W/m·K), substantial latent heat (357.44 J/cm 3 ), and excellent latent heat retention (91.23 % after 200 cycles). SEM and XRD revealed that the IMC growth rate in TTA-modified samples significantly slowed during thermal aging. This work introduces a novel strategy for fabricating high-performance MPCM's and paves the way for broader applications in industrial waste heat recovery, thermal management of high-power electronics, and thermal cushioning in vehicle components.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Constantin Muhire,Behery Realy,Xiyan Xu,Dagang Li,Niu Zhang,Dongxiang Zhang
In this work, a novel inorganic-organic Bi/La-C-oxide material for iodine vapor capture in conditions of high temperature, mostly encountered during the reprocessing of the spent nuclear fuel, was synthesized. Bi/La-C-oxide (Bi/La=1, 300 °C) was synthesized using a new approach that allowed the non-decarbonization of used fuels, which instead made a framework with the core of Bi/La oxide to form a hybrid material, which exhibited a fast iodine uptake with a capacity of 1339.64 mg·g −1 at 18 h and 1301.47 mg·g −1 after 26 h at 200 °C, respectively. Notably, Bi/La-C-oxide (Bi/La=1, 300 °C) owed the high iodine-adsorbing ability mainly from its structure made of tetragonal units of Bi 1.92 La 0.08 O 3 linked together with esters to form a polyesterified Bi/La-C-oxide framework. The thermal stability analysis of the materials before and after iodine capture showed high thermal stabilities, proving their ability to withstand real-field high-temperature conditions. ZnO was used to consolidate the iodine wastes to avoid post-sorption secondary pollution, and the iodine leaching rate was minimized to 1.143 × 10 −3 g·(m 2 ·day) −1 after 7 days of product consistency test-A.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Kangpeng Jin,Haonan Nie,Fengxian Gao,Jiang-Jiang Ma,Mingfang Shu,Xi Yan,Zhen-Hua Ge,Xiao Gao,Weiyun Zhao,Ming Liu,Yuan Yu,Jie Ma,Biao Xu,Liangwei Fu
Mg 3 (Sb,Bi) 2 alloys offer exceptional near-room temperature thermoelectric (TE) performance comparable to Bi 2 Te 3 . However, the low carrier mobility due to Mg vacancies and relatively high lattice thermal conductivity adversely affect overall TE performance. Herein, carrier mobility and thermal conductivity of Mg 3 (Sb,Bi) 2 are decoupled by modulating both the phase interface and grain boundaries through incorporating different sizes of iron (Fe). Ferromagnetic micrometer-sized Fe particles enhance the figure of merit ( ZT ) more than superparamagnetic nano-sized counterparts. Magnetic moments of Fe induce the charge density overlap near phase boundaries and ≈1 nm Fe interfacial layer lowers grain-boundary barriers, leading to sharply increased carrier mobility. Moreover, the additional magnon-phonon scattering reduces lattice thermal conductivity by over 40%. Consequently, Fe/Mg 3 (Sb,Bi) 2 composite achieves a high average ZT of 1.4 over room temperature to 573 K. The fabricated Mg 3 (Sb,Bi) 2 -CdSb module demonstrates a high conversion efficiency of 8.4% under a 275 K temperature gradient, among the best for Mg 3 (Sb,Bi) 2 -based modules. This work uncovers the role of thermo-electro-magnetic interactions in bolstering TE performance and inspires the development of low-cost, high-efficiency TE modules for low-grade heat recovery.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Miao Cheng,Junjie Liu,Xiaomian Wang,Yabing Li,Wentao Xia,Qianqian Liu,Jing Hu,Tao Wei,Yun Ling,Bo Liu,Wanfei Li
Rechargeable magnesium-ion batteries (MIBs) are considered to be promising electrochemical energy storage systems because of their low-cost and high safety features. However, the absence of suitable anodes severely impeded the development of high-performance MIBs. Herein, a unique Bi nanospheres homogenously anchored in cellulose nanocrystal (CNC) derived carbon aerogel (CNC-CA@Bi-NS) hybrid, was for the first time fabricated as anode for MIBs through ion-induced gelation and in-situ thermal reduction processes. The successfully incorporation of near-monodisperse Bi nanospheres (4–9 nm diameter) into the interconnected CA matrix could effectively alleviate the volume changes during magnesiation/de-magnesiation alloying reaction, as well as prevent the agglomeration and pulverization of Bi nanospheres. Meanwhile, the N -doped porous matrix not only served as a highly electronic conductive framework but also provided enough space and large surface area for electrolyte storage and penetration, which would facilitate the charge transfer kinetics process. Attractively, the CNC-CA@Bi-NS electrode delivered a remarkable reversible specific capacity of 346 mAh/g at 0.5C (90 % of theoretical capacity) after 100cycles. Furthermore, the CNC-CA@Bi-NS exhibited an excellent rate performance and unprecedented long-term cycling stability with a high coulombic efficiency of ∼ 100 % at 2.0C after 5000cycles. This work provided a new strategy to design and synthesize high-performance Bi-based anode for advanced next-generation MIBs.
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高影响因子
Inorganic and Nano-Metal Chemistry
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2021
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IF 1.716
Jiahua Guo,Yuqi Zhang,Shouwen Jin,Xiaoyun Ye,Kaikai Hu,Weiqiang Xu,Daqi Wang
Eight organic-inorganic hybrid salts [(HL1)(SbCl4)] (1) (L1 = N,N-dimethylbenzylamine), [(HL2)2(ZnCl4)] (2) (L2 = 4-chlorobenzylamine), [(HL2)(L2)(CuCl3)(H2O)2] (3), [(HL3)2(Sb2OCl6)] (4) (L3 = quinoline), [(HL4)4(Bi2Cl10)] (5) (L4 = 2-methylquinoline), [(HL5)(SbCl4)] (6) (L5 = 5,7-dimethyl-1,8-naphthyridine-2-amine), [(H2L6)(SbCl5)] (7) (L6 = 3,6-bis(imidazol-1-yl)pyridazine) and [(H2L7)2(CuBr4)2] · 7H2O (8) (L7 = di(2-benzimidazol-1-ylethyl)ether) were prepared and characterized by IR, XRD, EA and TG analysis. XRD analysis told that all of the complexes were 3 D net built from non-covalent bonds from the cations and the halometallates. The aryl rings of the cations in all of the compounds are essentially planar. The H2O also had crucial role in structure extension in 3 and 8. Extensive intermolecular interactions have been used in the self-assembly of diverse motifs, ranging from strong N-H···X (X = Br, Cl), N-H···O, N-H···N, O-H···O, O-H···Br H-bonds to weak CH2···O, CH3-Cl/CH2-Cl/CH-Cl, Cl-Cl, O-Br, CH3-π, CH2-π, Cl-π and π-π associations. The arrangements of the anions and cations in the solid are ruled not only by the size and symmetry of the cations, but also by the non-covalent bonds in the crystal structures.
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高影响因子
NANOTECHNOLOGY
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2020
·Vol. 31
·期 14
·145717
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IF 3.551
Wei Yue,Meifeng Hao,Bin Yu,Ruizhuo Ouyang,Yuqing Miao
The synthesis of inorganic micro-/nano-materials by dry combustion is somewhat dangerous since it is performed under high temperature. The ultrathin Bi nanofilms with 3D structures were synthesized using a safe approach of non-combustion explosion in H2O/DMF solution at room temperature and atmospheric pressure. The violent reaction between H2O2 and NH3 · H2O resulted in a non-combustion explosion due to the fast evolution of gases. Then under high temperature and high pressure during solvothermal process, the further slight explosion occurred where the oxygen-containing molecules of H2O2 and NO3− acted as oxidants, while the hydrogen-containing molecules of NaBH4, NH3 · H2O and DMF acted as reductants. The release of gases was accompanied with BiIII reduction by NaBH4. The 3D structure of ultrathin Bi nanofilms with many void spaces formed due to the explosive force and foams from the sharp liberation of gases. Such ultrathin Bi nanofilms with 3D structure exhibited outstanding catalytic activity for p-nitrophenol hydrogenation which is important to treat the environmental pollution from p-nitrophenol discharge. Within only several seconds p-nitrophenol hydrogenation was completed without delay. The non-combustion explosion exhibits potential applications for the synthesis of 3D ultrathin film materials as high efficient catalysts.
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高影响因子
POLYMER
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2022
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IF 4.432
Beibei Li,Zhiwei Liu,Ying Dan Liu,Yongri Liang
Electroactive dielectric polymer gels (DPGs) have important applications in soft robots, wearable electronics, and biomedical devices etc. However, the relationship between structure and electromechanical properties of DPGs have not been fully understood so far. In this work, the effect of the bi-component plasticizers on the structure, mechanical properties, dielectric properties , and electric field induced dynamic bending actuation behaviors of plasticized poly (vinyl chloride) (PVC) gels with free electrodes were investigated using the dibutyl adipate (DBA) as major plasticizer and the branch structured bio-based triethyl 2-acetylcitrate (ATEC) or triethyl citrate (TEC) as minor second plasticizer (30 wt% of bi-component plasticizer). The PVC gel films bend towards the anode side when applied electric field under free electrodes measurement condition. The electric field induced capacitance change of PVC gels was important factor to influence the bending displacement, which were influenced by the interactions between plasticizers and PVC chains in PVC gels. The bending displacement of PVC/DBA/TEC and PVC/DBA/ATEC gels is about 80% and 140% of PVC/DBA at 7.2 kV (corresponding to 180 V/mm of nominal electric field), respectively. The synergistic and counteractive effects of bi-component plasticizers on the bending actuation of PVC gels are mainly attributed to the competition between plasticization effect of PVC and interactions of inter-plasticizers. Our results provide a new insight for the design of high performance electroactive dielectric polymer gel materials.
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高影响因子
JOURNAL OF POWER SOURCES
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2018
·
IF 6.945
Yaqiang Ji,Jinqi Xie,Jian Wu,Ying Yang,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
Cu wires are coated by porous/dense Ni bi-layers as current collectors through electroless plating and hydrogen bubble dynamic template electrodepostion methods. The unique coaxial composite current collectors can be beneficial from the high electrical/thermal conductivity of metal Cu core and high corrosion resistance of dense metal Ni coating as well as porous Ni substrate for growth of active materials. Furthermore, the metal wire current collectors have excellent flexibility and mechanical strength . Highly flexible solid-state fiber supercapacitors are then fabricated by binder-free integrated electrodes of hierarchical MnCo 2 O 4 nanothorns grown on porous/dense Ni bi-layers coated Cu wires. The fiber supercapacitors reach capacitance of 20.6 mF cm −1 (54.8 mF cm −2 ) and energy density of 4.8 μWh cm −1 (12.8 μWh cm −2 ) at a power density of 32.25 μW cm −1 (110 μW cm −2 ). Moreover, the twist fiber supercapacitors show good rate capability and cycling stability. The outstanding performances of the fiber supercapacitors might be attributed to the hierarchically nanothorns MnCo 2 O 4 active materials and the unique porous/dense Ni coated Cu wire current collectors. Our results can provide a novel strategy to design flexible nanostructure fiber supercapacitors for energy storage applications in future wearable electronics .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
·
IF 4.175
Feng Si,Bin Tang,Zixuan Fang,Hao Li,Shuren Zhang
Novel lead-free ceramics of (1- x )BaTiO 3 - x Bi(Mg 1/2 Sn 1/2 )O 3 (abbreviated as (1- x )BT- x BMS, with x = 0–0.20) were fabricated through a solid-state reaction route. Introducing BMS into the BT host triggered a ferroelectric-to-relaxor phase transition, which yielded slim polarization-electric field ( P - E ) loops and enhanced energy-storage performances. The large recoverable energy density with 2.25 J/cm 3 and high energy efficiency of 94% were obtained simultaneously under 240 kV/cm with x = 0.12. Furthermore, the energy storage characteristics of the 0.88BT-0.12BMS ceramics exhibited good temperature stability in the range of −55–150 °C, and great frequency stability in the range of 10–1000 Hz. Meanwhile, by means of pulsed charging-discharging evaluation, the 0.88BT-0.12BMS ceramics displayed a fast discharge period of 73 ns and a large power density of 27.7 MW/cm 3 . The results indicate that the elaborately designed 0.88BT-0.12BNS ceramics have promising potential for high-power pulsed capacitor applications.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Xiaofeng Chang,Lin Xie,Wei E.I. Sha,Kun Lu,Qi Qi,Chenyu Dong,Xingxu Yan,Mohammed A. Gondal,Siddique G. Rashid,Qi I. Dai,Wen Zhang,Longqi Yang,Xingdu Qiao,Liang Mao,Peng Wang
State-of-the-art electron microscopy has enabled us to investigate microstructural details down to sub-subångström and milli-electron-volt resolution level. The enhanced photoreactivity over bismuth hybridized BiOCl catalyst (Bi/BiOCl) has been reported recently, however, the mechanistic understandings of this improved photoreactivity especially the optical behavior of bismuth nanoparticles (Bi NPs) are still obscured and in debate. The optical absorption features of Bi NPs and the charge transfer characteristic between bismuth and BiOCl have been considered as the major physicochemical origin for the promoted photoreactivity. Based on the advanced (in-situ) electron microscopy of monochromated electron energy loss spectroscopy in scanning transmission electron microscopy imaging mode (Mono-STEM-EELS) along with related theoretical investigations, in this work, we for the first time distinguished and explained the optical absorption originated from the localized surface plasmon resonances (LSPR) effect and direct band gap transition in an individual bismuth nanoparticle as well as transportation of photogenerated carriers at the interface of Bi/BiOCl. These findings could provide better understandings about the origin of the improved photoreactivity of various bismuth-hybridized photocatalysts.
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Zhangxing He,Yingqiao Jiang,Jing Zhu,Haiyan Wang,Yuehua Li,Huizhu Zhou,Wei Meng,Lei Dai,Ling Wang
N-doped carbon coated LiTi 2 (PO 4 ) 3 composites were synthesized by polyaniline (PANi) as carbon and nitrogen bi-sources, and used as anode for aqueous lithium ion battery (ALIB). High-quality N-doped carbon layers were achieved to modify LiTi 2 (PO 4 ) 3 crystal. ALIB using as-synthesized LiTi 2 (PO 4 ) 3 @C-N as anode exhibited superior rate performance. It delivered discharge capacities of 122.4, 105.8, and 95.3 mAh g −1 at rates of 0.2, 10, and 20C, respectively, much higher than those (97.4, 61.1, and 43.9 mAh g −1 ) of LiTi 2 (PO 4 ) 3 /C using sucrose as carbon source. Furthermore, LiTi 2 (PO 4 ) 3 @C-N anode demonstrated outstanding cycling performance with a capacity retention of 82.1% after 1000 cycles at 2C, while only 56.3% of capacity retention was kept for that using sucrose as carbon source. The excellent electrochemical performances of LiTi 2 (PO 4 ) 3 @C-N are mainly attributed to good dispersion, proper carbon layer, and nitrogen doping, further accelerating the charge transfer and diffusion of Li ions/electrons.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Hongrui Jia,Weitong Zhu,Shuai Yang,Fei Li,Linghang Wang
<001> oriented x Bi(Mg 1/2 Ti 1/2 )O 3 -(0.7- x )Pb(Mg 1/3 Nb 2/3 )O 3 -0.3PbTiO 3 (BMT-PMN-PT) textured ceramics are successfully fabricated by the template grain growth method using BaTiO 3 platelets as template. BMT-PMN-PT textured ceramics with different BMT contents are studied in terms of crystal structure, microstructures, dielectric and ferroelectric properties, and electric field induced strain. The as-fabricated BMT-PMN-PT textured ceramics were found to have a strong orientation along <001> direction. The frequency dispersion of dielectric constant of BMT-PMN-PT textured ceramics increases gradually and its relaxability becomes stronger with increasing BMT content. A large electric-field induced strain (0.42 % at 4 kV/mm) is obtained in 0.25BMT-0.45PMN-0.3PT textured ceramics with Lotgering factor 0.94, which is about 83 % enhancement than that of the randomly oriented ceramics (0.23 % at 4 kV/mm). The strain of 0.25BMT-0.45PMN-0.3PT textured ceramics have a relatively high thermal stability, with a slight decrease from 0.42 % to 0.28 % in the temperature range of 20−100 °C. Our research suggests that 0.25BMT-0.45PMN-0.3PT textured ceramics have a greatly potential for actuator devices applications owing to its advantages of large electric field induced strain response.
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