ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qianxi Wang,Yuting Lei,Yunyi Cui,Jingruolan Lin,Wei Huang,Yi He
Thermogravimetric analysis (TGA) is a key material characterization method for studying the thermal stability and thermochemical process. However, the common TGA for bulk samples lacks sufficient spatial information, which blurs the intrinsic thermal decomposition characteristic and limits the understanding of the structure–performance relationship. Here, we report a dark-field microscope (DFM) method for studying thermal desorption process of I2 from I2-loaded zeolitic imidazolate framework-8 (I2@ZIF-8). Because of the high spatial resolution, DFM enables the imaging and tracking of the local mass loss of I2 in single I2@ZIF-8 particles at different reaction temperatures. We obtain from the DFM images the single-particle thermogravimetric and differential thermogravimetric curves to evaluate the inherent thermal stability of single I2@ZIF-8 particles. We also find the heterogeneous thermal decomposition property among different I2@ZIF-8 particles. Furthermore, we demonstrate the capacity of DFM to quantitatively determine thermal kinetics parameters such as the diffusion coefficient and activation energy of I2 in individual and multiple ZIF-8 particles. These useful results are essential for developing high-efficient porous adsorbents for the capture of I2.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Li Cuicui,Zhang Zhengyue,Wang Sibo
Iodine (I 2 ) is an attractive cathode for aqueous Zn batteries (AZBs) because of its high capacity, low cost, and environmental benignity. Nevertheless, the I 2 dissolution and the shuttling effect of polyiodide during charge–discharge processes seriously hinder the cycle stability and practical application of Zn-I 2 batteries. Herein, a water-soluble polyvinylpyrrolidone (PVP) polymer is proposed as a functional binder to address the above issues. The abundant polar groups in the PVP molecular chain serve as active sites, which can form a strong affinity with polyiodide ions, thereby effectively confining polyiodide species within the cathode. As a result, the PVP-based cathode achieves a capacity of 201 mAh g –1 at 0.1 A g –1 and retains 122 mAh g –1 at 5 A g –1 , which significantly outperforms the conventional polytetrafluoroethylene (PTFE) binder-based cathode that only delivers 176 and 100 mAh g –1 under the same current densities, respectively. Moreover, a long cycling stability of 20,000 cycles at 5 A g –1 with 97 mAh g –1 capacity was achieved. This work not only provides an efficient and low-cost strategy to mitigate the iodine shuttle problem but also sheds insights into the design of multifunctional polymer binders for high-performance Zn-I 2 batteries.
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产品关联
DOI
高影响因子
Materials Reports: Energy
·
2025
·
IF 13.8
Bo Xiang,Jinxiang Peng,Qi Lai,Pengchen Wang,Yangfeng Cui,Mingjie Wu,Yunhai Zhu,Yingkui Yang
Aqueous Zinc-metal batteries (AZBs) hold great promise for energy storage applications, yet their practical deployment is hindered by challenges such as dendrite formation and parasitic side reactions at the Zn anode. Herein, we developed a three-dimensional Cu-coated flexible host via an electroless plating strategy on cotton cloth (Cu@CT). This design effectively homogenizes the local current density, spatially regulates Zn-ion flux, and accommodates substantial volume changes during cycling. Additionally, the zincophilic Cu coating facilitates Zn nucleation and deposition by forming Cu–Zn alloys, which reduce the Zn nucleation overpotential and promote uniform Zn plating. As a result, the Cu@CT based anode exhibits highly reversible Zn plating/stripping behavior with an average Coulombic efficiency of 99.58% over 800 cycles, accompanied by low polarization and dendrite-free behavior. Moreover, the Zn–I 2 full cell demonstrates excellent rate capability, delivering a discharge capacity of 114 mAh g −1 at 10 A g −1 , along with stable long-term cycling performance over 950 cycles. The electroless plating strategy may represent a promising pathway for advancing high-performance AZBs.
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产品关联
DOI
高影响因子
Nano Research
·
2021
·Vol. 15
·期 4
·3170-3177
·
IF 8.897
Song Chunlai,Gong Zongshuai,Bai Chong,Cai Fengshi,Yuan Zhihao,Liu Xizheng
Large scale applications of metal-iodine batteries working at sub-zero degree have been challenged by the limited capacity and performance degradation. Herein, we firstly propose a Zn-I 2 battery working at low temperature with a carbon composite material/iodine (CCM-I 2 ) cathode, a Zn anode and an environmentally tolerable Zn(ClO 4 ) 2 -ACN electrolyte. The CCM framework with hierarchical porous structure endows a powerful iodine-anchoring to overcome undesirable dissolution of iodine in organic electrolyte, and the Zn(ClO 4 ) 2 -ACN electrolyte with low freezing point and high ionic conductivity enhances the low temperature performance. The synergies enable an efficiently reversible conversion of Zn-I 2 battery even at −40 ° C. Therefore, the resultant Zn-I 2 battery delivers a high specific capacity of 200 mAh·g −1 , which is fairly approximate to the theoretical capacity of l 2 (211 mAh·g −1 ) and a superior cycling stability with minimal capacity fading of 0.00043% per cycle over 7,000 times under 2C at −20 ° C. Furthermore, even at −40 ° C, this Zn-I 2 battery still exhibits a good capacity retention of 68.7% compared to the capacity at 25 °C and a rapid capacity-recover ability with elevating temperature change. Our results distinctly indicate this Zn-I 2 battery can be competent for the practical application under low temperature operation.
研究领域:
电化学
·
能源材料
·
无机化学
·
储能技术
·
功能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenshuo Shang,Jianhui Zhu,Ying Liu,Litao Kang,Siying Liu,Bingkun Huang,Jisheng Song,Xiangming Li,Fuyi Jiang,Wei Du,Yanfeng Gao,Hongjie Luo
Zinc–iodine (Zn/I2) batteries are recognized as a kind of leading candidate for large-scale energy storage systems, owing to the high-capacity dissolution–deposition reactions on both electrodes. Nevertheless, the lifespan of Zn/I2 batteries is severely limited by the uncontrolled shuttling of triiodide ions (I3–) and unfavorable side reactions on Zn anodes. Herein, an alginate-based polyanionic hydrogel electrolyte is designed and synthesized by ion exchange and Zn2+-induced cross-linking. The immobile, negatively charged polyanionic chains on the hydrogel skeleton effectively block I3– from shuttling, while simultaneously transporting cations that are indispensable for battery chemistry. Moreover, this hydrogel can also enhance the cycling durability of Zn anodes by alleviating Zn’s dendritic growth and corrosion reactions, due to the homogenized Zn2+ flux and reduced interfacial contact between free water and metallic Zn. Consequently, this alginate-based hydrogel electrolyte enables stable Zn plating/stripping for over 600 h at 2 mA cm–2 and 2 mAh cm–2 (corresponding to 10% depth of discharge). Serving as an electrolyte for Zn/I2 full batteries, this hydrogel helps the battery to achieve a high capacity of 183.4 mAh g–1 (capacity retention = 97.6%) after even 200 cycles at 0.2 A g–1, 77.4% higher than that of the traditional ZnSO4 aqueous counterpart (residual capacity = 41.5 mAh g–1). This work indicates the promising potential of electrolyte design on the performance improvement of aqueous Zn/I2 batteries.
研究领域:
能源存储系统
·
电池化学
·
材料科学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Zhanpeng Huang,Weiwei Zhang,Hong Zhang,Lin Fu,Bin Song,Wenli Zhang,Qianwang Chen,Ke Lu
Rough interfacial Zn electrodeposition and severe parasitic side reactions in aqueous electrolyte , resulting in increased internal resistance and limited reversibility, have significantly hindered the commercial deployment of Zn metal anode. Interfacial engineering offers a versatile platform for manipulating the zinc-ion flux and suppressing side reactions, via pre-formation of an artificial interlayer. Herein, we demonstrate a zincophile interphase based on metal-organic framework cation reservoir. The zinc hexacyanoferrate nanocubes with interconnected open cation transfer channels uniformize the interfacial electric field and render the protected electrode with faster zinc redox kinetic and higher exchange current density . The cations within the reservoir served as an ion-transfer mediator could regulate interfacial Zn 2+ even distribution and lower zinc-ion nucleation energy barrier, consequently promoting the homogeneous Zn electrodeposition. Additionally, the in situ pre-formed film also enhances the thermodynamic stability of metal anode and avoids the water-induced side interfacial reaction. The protected anode exhibits an extremely low voltage hysteresis and achieves a high average Coulombic efficiency (∼99.6%) for 400 h with dendrite-free behaviors. When coupled with an iodine cathode, the favorable electrochemical performance of full Zn–I 2 cells is realized, representing an advanced practical step toward stable Zn metal anode for real applications.
研究领域:
材料科学
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电化学
·
能源存储
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DOI
高影响因子
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
·
2020
·Vol. 2020
·期 25
·3889-3895
·
IF 2.889
Xinpeng Jiang,Zongchen Zhao,Zhifeng Shen,Keda Chen,Liyun Fang,Chuanming Yu
Graphical A metal-free aerobic oxidative C–H sulfenylation of aryl-fused cyclic amines with various thiols was developed with excellent functional compatibility. While flavin I catalyzed the C–H sulfenylation of indolines to afford 3-sulfenylindoles, flavin II enabled transformations resulting in substitution at the position para to the N atom on the aryl ring to obtain 6-sulfenylquinolines. We report an aerobic oxidative C–H sulfenylation of aryl-fused cyclic amines with various thiols catalyzed by flavin/I 2 for the first time. While flavin I catalyzed the C–H sulfenylation of indolines to afford 3-sulfenylindoles, flavin II enabled transformations resulted in substitution at the position para to the N atom on the aryl ring to obtain 6-sulfenylquinolines. The advantages of this metal-free oxidative C–S coupling approach utilizing ambient oxygen as the terminal oxidant were that it was conducted under mild conditions with good atom-efficiency and excellent functional compatibility.
研究领域:
有机化学
·
合成化学
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DOI
高影响因子
JOURNAL OF CRYSTAL GROWTH
·
2014
·
IF 1.693
Huanyong Li,Zhi Gu,Haiyang Zhang,Wenwei Li
A modified chemical vapor transport system is developed to grow ZnSe single crystals from zinc–selenium source materials, where iodine serves as the chemical transport agent to avoid the kinetics limitations of the congruent sublimation conditions. ZnSe crystals with different crystalline quality are obtained under various growth conditions. The thermodynamic properties of Zn-Se-I 2 system are studied by combining the mass conservation with the vapor-solid reactions related to crystal growth. The mass transport is analyzed by using the diffusion-convection mathematical model. Depending on initial iodine concentration and the designed temperature difference between source zone and growth zone, the optimum growth conditions can be predicted based on the calculated maximum growth rate. Comparing growth results with theoretical analysis indicates that Zn-Se-I 2 system affords a feasible route to grow ZnSe crystals. High quality ZnSe crystal can be achieved under the theoretically optimized growth conditions.
研究领域:
材料科学
·
物理化学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 9
·1-9
·
IF 6.232
Qing Zhihe,Li Yacheng,Li Younan,Luo Guoyan,Hu Jinlei,Zou Zhen,Lei Yanli,Liu Juewen,Yang Ronghua
For the first time it is demonstrated that sulfhydryl compounds can suppress longitudinal etching of gold nanorods via consuming oxidizers, which provides a new signaling mechanism for colorimetric sensing. As a proof of concept, a colorimetric assay is developed for detecting organophosphorus pesticides, which are most widely used in modern agriculture to improve food production but with high toxicity to animals and the ecological environment. Triazophos was selected as a model organophosphorus pesticide. In the absence of triazophos, the active acetylcholinesterase can catalyze the conversion of acetylthiocholine iodide to thiocholine whose thiol group can suppress the I 2 -induced etching of gold nanorods. When triazophos is present, the activity of AchE is inhibited, and I 2 -induced etching of gold nanorods results in triazophos concentration-dependent color change from brown to blue, pink, and red. The aspect ratio of gold nanorods reduced with gradually blue-shifted longitudinal absorption. There was a linear detection range from 0 to 117 nM ( R 2 = 0.9908), the detection limit was 4.69 nM, and a good application potential was demonstrated by the assay of real water samples. This method will not only contribute to public monitoring of organophosphorus pesticides but also has verified a new signaling mechanism which will open up a new path to develop colorimetric detection methods.
It has been first found that sulfhydryl compounds can suppress longitudinal etching of gold nanorods (AuNRs) via consuming oxidizers, which provides a new signaling mechanism for colorimetric sensing. As a proof of concept, a colorimetric assay is developed for sensitively detecting organophosphorus pesticides (OPs). It will not only contribute to public monitoring of OPs but also has verified a new signaling mechanism which will open up a new path to develop multicolor colorimetric methods.
研究领域:
分析化学
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环境科学
·
纳米技术
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Qianwu Chen,Song Chen,Jintao Zhang
Aqueous Zn-based batteries have been regarded as a promising energy storage system due to their high energy/power density, safety, and cost-effectiveness. However, their performance have been severely hindered by the dendrite growth of zinc and water-induced side reactions. Herein, a facial strategy of electrolyte modification with a high concentration of zinc sulfate and lithium iodide (LiI) as additives is proposed to guide the preferential growth along with the Zn (002) plane for the smooth Zn deposition. Compared to the pure zinc sulfate electrolyte, the Zn anode in the modified electrolyte exhibited the ultralong cycling stability for 3000 h at a capacity of 1 mAh cm −2 and 400 h at a higher capacity of 5 mAh cm −2 , with low reversible deposition potentials of around 30 and 40 mV, respectively, demonstrating the stable plating/stripping behaviors. More importantly, the cycling stability of the Zn–I 2 battery with the modified electrolyte can still deliver a large specific capacity after 5000 cycles. The strategy presented that the LiI as additive could not only provide an iodine-rich environment to induce the preferential growth of Zn (002) plane, but also eliminate the side corrosion reactions with the help of additional Li-ions, thus leading to the high-performing Zn–I 2 battery.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Han Dong,Pu Zhou,Fan Yang,Enhao Zhang,Yifan Liu,Yefei Tian,Hongye Yuan
The development of metal–organic framework (MOF)-based adsorbents with high uptake capacity and mild regeneration conditions represents a promising avenue for addressing environment-based issues. In this study, we present the successful synthesis of temperature-responsive composite aerogels comprising MOF-808 and poly(N-isopropylacrylamide) (PNIPAM), which forms interpenetrated networks with acrylamide (AM). The resulting thermally responsive PNIPAM/MOF-808 composite aerogels achieved an impressive maximum water capture exceeding 2267 wt % at room temperature, with reversible release observed above 32 °C due to the hydrophilicity–hydrophobicity transition of PNIPAM. Interestingly, the aerogels also exhibit an iodine (I2) capacity of 234 wt % based on the charge transfer mechanism. This study provides a novel strategy for the preparation of efficient and reusable porous adsorbent materials, and it also demonstrates broad application prospects in areas such as water resource management and waste reduction.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2023
·
IF 18.9
Wenda Li,Lingyan Huang,Hongyi Zhang,Yong Wu,Facai Wei,Tingting Zhang,Jianwei Fu,Chengbin Jing,Jiangong Cheng,Shaohua Liu
Construction of covalent organic frameworks (COFs) with fine-tuning pore structures and crystalline orientations at the nano-/meso-scale is vital for their potential applications, but common synthesis routes for COFs always result in the unpredictable nucleation growth and aggregation of small crystals with arbitrary orientations and geometries. Here, we develop a supramolecular mineralization strategy for controllable fabrication of semiconducting COF nanoarchitectures by pre-assembly and subsequent in situ covalent locking of supramolecules. This strategy allows us to change the dynamic covalent chemistry reaction path by reducing the entropy of the system, thus facilitating control over the growth and crystallization of COFs on demand (including 1D, 2D, etc.). The tailor-made COF can effectively suppress the shuttle effect and accelerate the conversion of polyiodide through strong intrinsic electron-pair induce interactions, thereby delivering an outstanding performance in zinc-iodine batteries. The studies create a link between supramolecular chemistry and polymer science for the controllable construction of COF and supramolecular materials.
研究领域:
材料化学
·
纳米科学
·
电化学
·
能源存储
·
高分子科学
·
超分子化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）