JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoqing Liu,Ze Xu,Jinjiang Wu,Kexin Wang,Chuang Yu
Vanadium dioxide (VO 2 ) materials exhibit significant theoretical specific capacity, which is ascribed to multi-electron transfer reactions and unique tunneled structures. However, the low electronic conductivity and sluggish reaction kinetics of VO 2 have impeded its further development. Hence, in this study, we employed a synergistic strategy of defect engineering and compositing with a calabash carbon matrix to reduce Zn 2+ diffusion barriers and accelerate electron transfer. The VO 2 cathode provided a high specific capacity at a low rate of 303 mA h g −1 at 0.1 A g −1 after 191 cycles, along with good rate performance (168 mA h g −1 at 10 A g −1 ) and satisfactory long-term stability (170 mA h g −1 at 1 A g −1 after 1100 cycles). The exhaustive structural analyses indicated that oxygen vacancies accelerated the Zn 2+ diffusion rate, while a uniform calabash-like hollow carbon matrix improved electronic conductivity during cycling. Moreover, ex-situ measurements demonstrated that during discharge, the composite cathode transformed to layered Zn 3+ x (OH) 2 V 2 O 7 ·2H 2 O, which then facilitated the subsequent intercalation of Zn 2+ . This cooperative strategy advances the practical application of aqueous zinc ion batteries by leveraging vanadium-based electrodes.
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DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 97
·94976-94988
·
IF 3.289
Longfei Liao,Ying Liu,Zengyong Li,Junping Zhuang,Yanbin Zhou,Size Chen
Amino modified Fe3O4@SiO2 (Fe3O4@SiO2–NH2) was used to immobilize Cu2+ and VO2+ for preparing Fe3O4@SiO2–NH2–Cu2+ and Fe3O4@SiO2–NH2–VO2+ catalysts. Various technologies had been used for the characteristics of catalysts, such as XRD, XPS, FT-IR, SEM, TEM and VSM. The catalytic performance of Fe3O4@SiO2–NH2–VO2+ in HMF oxidation could be significantly enhanced by the use of Fe3O4@SiO2–NH2–Cu2+ as the co-catalysts. The type of reaction solvents showed a great influence on the oxidation of HMF. The highest HMF conversion reached up to 98.7% at 110 °C in toluene with an optimal 2,5-diformylfuran yield of 85.5%. Moreover, the Fe3O4@SiO2–NH2–Cu2+ and Fe3O4@SiO2–NH2–VO2+ catalyst exhibited great stability and could be readily applied in the next recycle after magnetic separation.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Dexin Meng,Xincheng Liang,Qian Liu,Xingfa Chen,Renshu Huang,Lin Peng,Huan Wen,Shibin Yin
The severe dendrite issue of the Zn anode greatly hinders the practical application of aqueous zinc-ion batteries, which demands a prompt solution. This work proposes an electrostripping strategy using sodium citrate (SC) solution as the electrolyte to fabricate a 3D honeycomb-like Zn (3DH-Zn) anode. Theoretical calculations and experimental results reveal that SC preferentially adsorbs on the Zn(100) and Zn(101) planes and exhibits a shielding effect, leading to the major dissolution of Zn atoms from the Zn(002) plane, thus obtaining a honeycomb-like structure. Notably, convinced by morphology characterization and finite element simulation results, Zn 2+ tends to deposit on the lateral sides of the hexagonal holes on the 3DH-Zn anode, resulting in a flat deposition morphology dominated by Zn(101)/Zn(100) planes, which significantly inhibits dendrite formation. As a result, the 3DH-Zn symmetric cell achieves an ultra-long lifespan of 2000 h at 5.0 mA cm −2 and 1.0 mAh cm −2 . Besides, the 3DH-Zn||VO 2 full cell works for 1000 cycles at 1.0 A g −1 with a residual capacity of 123.1 mAh g −1 . This work opens up a new horizon for applying electrostripping strategy in designing advanced Zn anode.
研究领域:
材料科学
·
电化学
·
电池技术
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JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Ziyan Yuan,Fuyu Xiao,Yixing Fang,Peixun Xiong,Xiaoli Sun,Xuehui Duan,Xuhui Yang,Haosen Fan,Mingdeng Wei,Qingrong Qian,Qinghua Chen,Lingxing Zeng
Designing cathodes with long service life, remarkable rate capability and all-climate workable is crucial to improve the performance of aqueous zinc-ion batteries (AZIBs). Herein, we constructed a vanadium dioxide/graphene oxide (VO 2 (B)/GO) sample that combines VO 2 with GO through hydrothermal route and can simultaneously provide rate capability. VO 2 (B)/GO is rich in oxygen vacancies , which weakens the electrostatic force , and GO prevents vanadium oxidation . Density functional theory (DFT) calculations elucidate oxygen vacancies can offer more storage sites with increased reaction kinetics. The electrode exhibited a high reversible capacity of 423 mAh g −1 at 0.5 A g −1 and preserved long-life cycling properties at 15 A g −1 . The presence of oxygen vacancies and GO can contribute to the excellent performance and prevent the structure of VO 2 from collapsing during cycling. We successfully lit up commercial light-emitting diode (LED) lights with a VO 2 (B)/GO electrode. In addition, VO 2 (B)/GO exhibits excellent performance in all-climate conditions (-15-60 °C). This combinatorial design strategy provides a broadly applicable approach for durability and all-climate workable batteries .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Wen Wang,Chuyuan Lin,Fenqiang Luo,Renpin Liu,Xiaochuan Chen,Wangyang Wu,Shiting Wei,Fuyu Xiao,Peixun Xiong,Qinghua Chen,Qingrong Qian,Lingxing Zeng
Hybrid magnesium-lithium batteries (MLIBs) are a promising battery system with safety and exceptional reaction kinetics due to the combination of the dendritic-free deposition Mg metal anode and the rapid Li intercalation cathode. The large interchain frame of VO 2 may contribute to the metal-ion diffusion, making it a suitable cathode for MLIBs. However, the development of VO 2 cathodes for MLIBs is restricted by bad structural stability and low electronic conductivity. Herein, MoS 2 with a hexagonal crystal structure is introduced into the tetragonal VO 2 to construct heterostructure interfaces and induce abundant oxygen vacancies (VO 2 /MoS 2 -2), which enhances the structural stability and reaction kinetics. For this reason, the VO 2 /MoS 2 -2 cathode delivers a remarkable capacity (518 mAh g -1 ) and a considerable cycling lifespan (202 mAh g -1 at 1.0 A g -1 over 700 cycles). Even at low temperatures (-15 and -40 °C), VO 2 /MoS 2 -2 delivers 145 and 115 mAh g -1 after 200 and 50 cycles at 0.1 A g -1 , respectively. This strategy of combinatorial design offers a widely applicable method for the cryogenic resistance and cycling durability of magnesium-lithium batteries.
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Han Shen,Xiaorong Meng,An Zhou,Zhifan Zhang,Pan Feng,Haigang Qin
This study employs a synergistic strategy combining La 3+ -doped modified VO 2 (B) (L x VO) with mesoporous hollow carbon spheres (MHCS) to prepare a high-capacity, highly stable MHCS-supported La-doped VO 2 (B) cathode material (HLVO). Optimizes the La 3+ doping ratio of L x VO and the MHCS content in HLVO, and the lattice expansion behavior of VO 2 (B) caused by La 3+ doping and the composite of carbon materials is clarified, which effectively contributes to the improvement of Zn 2+ diffusion kinetics rate and electrochemical performance of HLVO. The dynamic mechanism of LVO and HLVO is explained by density functional theory. The results show that the (110) interplanar spacing of 5 % La-doped L 0.05 VO increases to 0.355 nm. In the optimized H2L 0.05 VO, L 0.05 VO loose nanorods and MHCS are evenly distributed. The diffusion kinetic rate constant of Zn 2+ in HLVO is two orders of magnitude higher than that of VO 2 (B). At 1 A g −1 , the specific capacity of H2L 0.05 VO cathode remains at 403.5 mAh g −1 after 200 cycles, and the capacity retention rate is as high as 81.6 % after 10 A g −1 10000 cycles. The synergistic strategy of rare earth doping and carbon material composite provides a new idea for the development of high-performance aqueous zinc ion batteries (AZIBs) cathode materials.
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INORGANIC CHEMISTRY
·
2025
·
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
JOURNAL OF POWER SOURCES
·
2020
·
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
·
电化学
·
能源存储
·
纳米材料
·
电池技术
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高影响因子
ANALYTICAL CHEMISTRY
·
2021
·
IF 6.986
Jinna Guo,Mingsen Xie,Peiyao Du,Yu Liu,Xiaoquan Lu
Luminol, as a classical luminophore, plays a crucial role in electrochemiluminescence (ECL). However, the traditional luminol–H2O2 ECL system suffers from the self-decomposition of H2O2 at ambient temperature, which hinders its further application in quantitative analysis. In this work, for the first time, we developed atomically gold-supported two-dimensional VO2 nanobelts (Au/VO2) as an advanced co-reaction promoter to speed up the reduction of dissolved oxygen to superoxide radicals (O2•–), which react with the luminol anion radical and greatly promote the ECL emission. The ECL resonance energy transfer (ECL-RET) between the hollow manganese dioxide nanospheres and luminol results in a conspicuously decreased ECL signal response, and in the presence of glutathione (GSH), effective redox reaction between manganese dioxide and GSH restores the ECL signal. As a consequence, the designed sensor based on ECL-RET-assisted Au/VO2 signal amplification showed outstanding performance for “signal-on” detection of GSH in the concentration range of 10–3 to 10–10 M, and the detection limit was as low as 0.03 nM. The ECL sensor displayed excellent specificity and was successfully utilized to target GSH in real human serum samples. Importantly, this work not only highlights a powerful avenue for constructing an ultrasensitive ECL sensor for GSH but also provides some inspiration for the further design of high-performance co-reaction accelerators using the ECL technique.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
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
·
电化学
·
电池技术
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高影响因子
ACS Nano
·
2024
·
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
·
电化学
·
能源存储
·
电池技术
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DOI
高影响因子
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