INORGANIC CHEMISTRY
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2025
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IF 4.7
Qian Wu,Tianyu Wang,Jingfang Zhou,Pifu Gong,Haochen Li,Haotian Tian,Mingjun Xia
With the increasing significance of the laser industry, especially in the 3–5 μm range, mid-infrared (mid-IR) nonlinear optical (NLO) crystals have become crucial components to meet stringent requirements. Herein, a large birefringence is essential for a mid-IR NLO crystal, as it ensures the phase-matching condition for high-conversion efficiency in laser output operation. In this study, three vanadium selenites A(VO2)3(SeO3)2 (A = NH4+, K+, and H3O+) with hexagonal tungsten oxide-related structures were prepared, featuring two-dimensional layered structures composed of two second-order Jahn–Teller (SOJT) motifs: distorted VO6 octahedra and SeO3 pyramids. Owing to the highly anisotropic VO6 octahedra and SeO3 pyramids, the family of A(VO2)3(SeO3)2 (A = NH4+, K+, and H3O+) crystals shows significant birefringence, which represents the highest birefringence value among vanadium selenites, even surpassing some SOJT-cation-based oxides. In addition, the title crystals exhibit large second harmonic generation responses of powder of 0.28–0.58 × AgGaS2 (AGS) at 2.09 μm.
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高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Xiaoming Yan,Huaqing Zhang,Zhongyue Hu,Lv Li,Lei Hu,Zhi’ang Li,Li Gao,Yan Dai,Xigao Jian,Gaohong He
To solve the stability issue of cost-effective nonfluorinated membranes, an ether-free poly(arylene piperidinium) (PBPip)-based membrane is first applied in redox flow batteries (RFBs). For improved efficiencies of RFB, amphoteric side chains are introduced onto the PBPip. Without an ether bond in the polymer backbone, the membrane shows a good stability in a strong oxidation environment. The Fourier transform infrared (FTIR) spectra exhibit no obvious changes over 30 days of oxidation test. Different from traditional blended amphoteric membranes, the amphoteric side chain allows both cation- and anion-exchange capacities to increase with grafting degree, which leads to a very high total ion-exchange capacity (IEC) (4.19 mmol g–1). Outstanding ion-conduction ability (area resistance: 0.22 Ω cm2) comparable to Nafion 212 (0.24 Ω cm2) is consequently achieved. Ionic cross-linking structure between cationic and anionic groups results in a low swelling rate (13.9%). Combined with the repelling effect of positively charged piperidinium, a low VO2+ permeability (1.31 × 10–8 cm2 s–1) is accomplished. On the basis of these good properties, the membrane exhibits excellent vanadium battery performances, especially at high current densities. The VE and EE both exceed 80% even at 200 mA cm–2. The battery performances have no obvious reductions after 500 cycles. These results indicate that this work provides a new orientation to design the membrane for RFB.
研究领域:
材料科学
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电化学
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能源存储
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2020
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IF 8.247
Xiong Liu,Guobao Xu,Qi Zhang,Shouji Huang,Lun Li,Xiaolin Wei,Juexian Cao,Liwen Yang,Paul K. Chu
Design and fabrication of cathode materials with large capacity and high-rate capability in aqueous zinc ion batteries (AZIBs) are challenging. Herein, ultrathin hybrid nanobelts comprising single-crystalline VO 2 and poly(3,4-ethylenedioxythiophene) (PEDOT) (designated as VO 2 -PEDOT) are synthesized as cathode materials for the AZIBs. The nanobelts have a thickness below 10 nm, large amount of exposed VO 2 (001) facets and discrete PEDOT conductive layers. Systematic structural and electrochemical assessment reveals that simultaneous proton and Zn 2+ insertion into the VO 2 host is efficient in the Zn(CF 3 SO 3 ) 2 electrolyte due to synergistic effects rendered by unique structure of the VO 2 -PEDOT nanobelts. The Zn/VO 2 -PEDOT battery that shows a storage mechanism involving two carriers delivers extraordinary performance including a high capacity of 540 mAhg −1 with 36.3% beyond a high operating voltage of 0.7 V at −0.05 Ag − 1 , high rate capability of 231.2 mAhg −1 at 10 Ag − 1 , excellent cycling stability up to 1000 cycles with capacity retention of 84.5%. Moreover, the 50 μm thick freestanding electrode consisting of ultrathin VO 2 -PEDOT nanobelts has a large areal capacity of 1.35 μAhcm −2 at 5 Ag − 1 . The results provide mechanistic insights into the electrochemistry of VO 2 -based cathodes and reveal a new strategy to improve the performance of the AZIBs especially with regard to grid-scale energy storage.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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电池技术
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Journal of Materials Chemistry A
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2019
·Vol. 7
·期 37
·21112-21119
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IF 10.733
Lei Hu,Li Gao,Changkun Zhang,Xiaoming Yan,Xiaobin Jiang,Wenji Zheng,Xuehua Ruan,Xuemei Wu,Guihua Yu,Gaohong He
“Fishnet-like” ion-selective nanochannels for advanced membranes are designed for the first time to enhance the efficiency and durability of flow batteries. A fishnet-like structure with 10 nm ion-transport channels is achieved by tuning the hydrophobic/hydrophilic nanophase separation structure of the membrane, in which absorbed water molecules are restricted around hydrophilic polyethylenimine (PEI) chains by hydrophobic polybenzimidazole (PBI). Owing to the size-exclusion and high-density protonated amine groups of PEI fishnets, the membrane exhibits ultralow VO2+ permeability without sacrificing its ion conductivity, ensuring high energy efficiency of vanadium flow batteries. Furthermore, the demonstrated vanadium flow battery with the fishnet-based membrane steadily run at 120 mA cm−2 over 2000 cycles (about 120 days). These findings provide a new strategy for the design of high-performance and cost-effective membranes for vanadium flow battery applications.
研究领域:
材料科学
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电化学
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能源存储
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xiaoqin Zhang,Yijun Zhai,Bin Xie,Min Li,Haoran Lang,Yi Yang,Ji Chen,Yuxiang Chen,Qiaoji Zheng,Yu Huo,Ruyi Zhao,Kwok-Ho Lam,Dunmin Lin
Aqueous zinc-ion batteries (AZIBs) have attracted significant attention owing to their inherent security, low cost, abundant zinc (Zn) resources and high energy density. Nevertheless, the growth of zinc dendrites and side reactions on the surface of Zn anodes during repeatedly plating/stripping shorten the cycle life of AZIBs. Herein, a simple organic molecule with abundant polar functional groups, 2,2,2-trifluoroether formate (TF), has been proposed as a high-efficient additive in the ZnSO 4 electrolyte to suppress the growth of Zn dendrites and side reaction during cycling. It is found that TF molecules can infiltrate the solvated sheath layer of the hydrated Zn 2+ to reduce the number of highly chemically active H 2 O molecules owing to their strong binding energy with Zn 2+ . Simultaneously, TF molecules can preferentially adsorb onto the Zn surface, guiding the uniform deposition of Zn 2+ along the crystalline surface of Zn(0 0 2). This dual action significantly inhibits the formation of Zn dendrites and side reactions, thus greatly extending the cycling life of the batteries. Accordingly, the Zn//Cu asymmetric cell with 2 % TF exhibits stable cycling for more than 3,800 cycles, achieving an excellent average Columbic efficiency (CE) of 99.81 % at 2 mA cm −2 /1 mAh cm −2 . Meanwhile, the Zn||Zn symmetric cell with 2 % TF demonstrates a superlong cycle life exceeding 3,800 h and 2,400 h at 2 mA cm −2 /1 mAh cm −2 and 5 mA cm −2 /2.5 mAh cm −2 , respectively. Simultaneously, the Zn//VO 2 full cell with 2 % TF possesses high initial capacity (276.8 mAh/g) and capacity retention (72.5 %) at 5 A/g after 500 cycles. This investigation provides new insights into stabilizing Zn metal anodes for AZIBs through the co-regulation of Zn 2+ solvated structure and surface crystallography.
研究领域:
材料科学
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电化学
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电池技术
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2022
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IF 6.51
Lu Yang,Tingwei Gu,Yang Xu,Yuda Liu,Yongping Zhang,Zhihong Jiang,Lihua Peng
Natural polysaccharides derived from medicinal plants , that are Dendrobium (DPS), Lycium barbarum (LBP), Ginseng (GPS), and Poria Cocos (PCP) were firstly combined with sodium alginate (SA) to construct microcapsules and improved the morphology, encapsulation efficiency, Biocompatibility and protective capability in drug loading. Diverse typical therapeutics, including VO 2 @ZIF67 nanoparticles , small molecule drugs salvianolic acid B (SaB)/ginsenoside (Rg1), probiotic Bacillus bifidus , and biomacromolecules SDF-1 were wrapped into 1.5 % GPS-0.5 % SA model microcapsules, respectively. Better mobility and formability were significantly observed, and showed 75 % survival rate of probiotics in simulated gastric juice and around 99 % encapsulation efficiency which is higher than single 2 % SA microcapsules. The microcapsules also obtained a delayed release and a higher cell index for SDF-1, which indicated better stability, biocompatibility and protective effect than single 2 % SA microcapsules. This study provides a strategy in developing plant derived polysaccharides as novel materials for the construction and improvement of traditional microcapsules.
研究领域:
药学
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材料科学
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生物技术
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药物递送系统
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2023
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IF 19
Zongxu Na,Xiao Liang,Hao Wang,Li Yu,Chunming Fan,Qian Wang,Xianbao Wang,Huai Yang
Smart photovoltaic windows (SPWs) are an emerging green technology presenting energy-saving by combining solar irradiance regulation and solar energy harvesting. The SPWs integrating extraordinary energy-saving performance, stable and controllable operational mode, and diverse functionality are essential for devising high efficiency energy-saving buildings (ESBs). However, the attainment of such features has yet to be realized in current iterations of SPWs. Herein, a conceptual demonstration of a split-type broadband modulation, self-driven, and self-cleaning SPWs is presented by coupling a silicon solar cell with a multifunctional chromogenic unit (MCU) for creating highly efficient ESBs. Within the multilayer structured MCU, thermal-responsive polymer stabilized liquid crystal (PSLC) and VO 2 @SiO 2 nanoparticles act as chromic component, enabling broadband light modulation. Thanks to the excellent electrothermal effect of indium tin oxide (ITO), the phase transition of PSLC and VO 2 @SiO 2 nanoparticles can be induced by the electrical power output generated by the silicon solar cell. Therefore, the transparency of SPWs can be manipulated according to the occupant's preference during the daytime. Moreover, a superhydrophobic SiO 2 coating provides SPWs with self-cleaning capability which effectively reduces water resource consumption and eliminates the inconvenience of window cleaning, while providing occupants with a clear view even in complex weather conditions.
研究领域:
能源工程
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材料科学
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环境科学
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电气工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Yujun Zhou,Shiyin Xie,Yang Li,Zhiyuan Zheng,Liubing Dong
Zn-based electrochemical energy storage (EES) systems are plagued by the uncontrollable generation of dendritic zinc and side reactions on zinc anodes. Herein, we report a ZnO porous sheets-assembled sieve-like interface to stabilize zinc anodes. Specifically, ZnO porous sheets are synthesized through the thermal decomposition of basic zinc sulfate nanoflakes and then served as an artificial zinc anode-electrolyte interface. Benefiting from the sieve-like interface formed by the ZnO porous sheets, Zn 2+ flux is effectively homogenized during the zinc plating process and thus zinc dendrite growth is restricted. Meanwhile, the corrosion behavior of zinc anodes is alleviated thanks to the hydrophobic feature of the ZnO porous sheets. As a result, the electrochemical properties of zinc anodes are notably optimized under the protection of such a sieve-like interface. Cycling life evaluated at 1 mA cm −2 of the zinc anodes is prolonged from less than 100 h for bare zinc anodes to 2800 h for the protected zinc anodes (Zn@ZnO), and even at 5 mA cm −2 , the latter ones can operate normally for 400 h. As expected, the cycling life of VO 2 //Zn@ZnO zinc-ion batteries is greatly increased, achieving 90% capacity retention after 1000 cycles at 5 A g −1 and activated carbon fiber//Zn@ZnO zinc-ion hybrid supercapacitors possess 96% capacity retention after 10,000 cycles at 1 A g −1 . This work provides a promising approach for improving the electrochemical stability of the Zn-based EES system.
研究领域:
电化学
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材料科学
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能源存储
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PubMed
高影响因子
ACS Nano
·
2024
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IF 15.8
Xiaobin Hui,Zhen Zhan,Zeyu Zhang,Jingya Yu,Pengyan Jiang,Zhengzheng Dang,Jian Wang,Songhua Cai,Yanming Wang,Zheng-Long Xu
Solid-state polymer electrolytes (SPEs) are promising for high-performance zinc metal batteries (ZMBs), but they encounter critical challenges of low ionic conductivity, limited Zn2+ transference number (tZn2+), and an unstable electrolyte-electrode interface. Here, we present an effective approach involving a missing-linker metallic organic framework (MOF)-catalyzed poly(ethylene glycol) diacrylate (PEGDA)/polyacrylamide (PAM) copolymer SPE for single Zn2+ conduction and seamless electrolyte-electrode contact. The single-Zn2+ conduction is facilitated by the anchoring of the OTF– anions onto the unsaturated metal sites of missing-linker MOF, while the PEGDA and PAM chains in competitive coordination with Zn2+ ions promote rapid Zn ion transport. Our all-solid-state electrolyte simultaneously achieves a superior ionic conductivity of 1.52 mS cm–1 and a high tZn2+ of 0.83 at room temperature, alongside uniform Zn metal deposition (1000 cycles in symmetric cells) and high Zn plating/striping efficiencies (>99% after 600 cycles in asymmetric cells). Applications of our SPE in Zn//VO2 full cells are further demonstrated with a long lifespan of 2000 cycles and an extremely low-capacity degradation rate of 0.012% per cycle. This work provides an effective strategy for using a missing-linker MOF to catalyze competitively coordinating copolymers for accelerating Zn2+ ion conduction, assisting the future design of all-solid-state ZMBs.
研究领域:
材料科学
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电化学
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能源存储
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电池技术
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高影响因子
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