CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Gen Li,Yang Huang,Jing Lin,Chao Yu,Zhenya Liu,Yi Fang,Yanming Xue,Chengchun Tang
Iodine has critical roles in the chemical processes within a living organism and has wide applications in chemical engineering, medicines, material sciences etc. On the other hand, the radioactive iodine could be one of the biggest hidden dangers during the nuclear accidents in the modern nuclear industry. Capture and storage of iodine is of great importance for both applications of iodine and preventing the harmful leakage of radioactive iodine. Herein, we report our efforts in utilization of monolithic boron nitride (BN) foams in capture and reversible storage of iodine in both gaseous and liquid environment. The BN foam consisting of interwoven one-dimensional (1D) porous BN microfibers inherits the merits from h-BN such as high thermal stability and chemical inertness, thus showing great resistance to harsh environments; additionally, the BN foam possesses high porosity and large specific surface areas, which make it reliable as decent adsorbents. The high internal connectivity feature, as well as the presence of a large amount of iodine adsorption sites such as π bonds and functional groups, result in the high iodine uptake capacity. Our study indicates that the adsorption amount of violate iodine by BN foams can achieve ∼212 wt%. The adsorption of iodine by BN foams in n-hexane solution follows the pseudo-second-order model best, and the adsorption isotherms are more accordant with the Freundlich model. In addition, owing to the great chemical stability of the BN foams, the desorption of iodine and recovery of the BN foam adsorbents can be achieved by either washing the foams in ethanol solution or directly heat treatment in N 2 atmosphere at 800 °C for 2 h.
研究领域:
化学工程
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 10
·e56550
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IF 2.7
Yuhang Huang,Yingkang Zhu,Lijun Cao,Yidan Jing,Zhigang Xu,Guochu Tang,You Shu,Xiaoqing Liu,Xiaomin Zhang
The photo-induced cis-trans isomerization of azobenzene molecules, known for their significant color changes, is extensively utilized in the functional modification of polymeric materials. However, the research on the functionalization of biomass-based polyesters with azobenzene is limited. A key raw material for biomass-based coatings possess reactive double bonds and excellent film-forming capabilities, offering significant advantages for azobenzene functionalization in biomass-based polyester applications. In this study, AESO served as the polyester matrix and acrylate azobenzene derivatives as the functional molecules. Under ultraviolet radiation, AESO underwent a carbon–carbon crosslinking reaction with the azobenzene derivatives to synthesize a novel resin. The coating of this resin on a PET substrate exhibited excellent pencil hardness (3B), adhesion (5B), and solvent resistance. By alternating exposure to ultraviolet and blue light, the coating displayed reversible switching between cis and trans isomers, enabling reversible writing and erasing of patterns. Even after 20 cycles of writing and erasing, high-resolution patterns could still be observed (clearly visible under a 12x microscope). Furthermore, the image could be retained for up to 2 h under sunlight irradiation. This study presents a new method for functionalizing biobased polyesters.
研究领域:
材料科学
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生物质化学
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光学材料
✓ 已验证
DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Shuhao Xiao,Xinyan Li,Wensi Zhang,Yong Xiang,Tingshuai Li,Xiaobin Niu,Jun Song Chen,Qingyu Yan
Metal selenides are considered as a group of promising candidates as the anode material for sodium-ion batteries due to their high theoretical capacity. However, the intrinsically low electrical and ionic conductivities as well as huge volume change during the charge-discharge process give rise to an inferior sodium storage capability, which severely hinders their practical application. Herein, we fabricated In2Se3/CoSe2 hollow nanorods composed of In2Se3/CoIn2/CoSe2 by growing cobalt-based zeolitic imidazolate framework ZIF-67 on the surface of indium-based metal–organic framework MIL-68, followed by in situ gaseous selenization. Because of the CoIn2 alloy phase in between In2Se3 and CoSe2, a heterostructure consisting of two alloy/selenide interfaces has been successfully constructed, offering synergistically enhanced electrical conductivity, Na diffusion process, and structural stability, in comparison to the single CoIn2-free interface with only two metal selenides. As expected, this nanoconstruction delivers a high reversible capacity of 297.5 and 205.5 mAh g–1 at 5 and 10 A g–1 after 2000 cycles, respectively, and a superior rate performance of 371.6 mAh g–1 at even 20 A g–1.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2023
·Vol. 16
·期 1
·1-13
·
IF 26.6
Dai Huichao,Chen Yuan,Cao Yueyue,Fu Manli,Guan Linnan,Zhang Guoqun,Gong Lei,Tang Mi,Fan Kun,Wang Chengliang
The effect of small changes in isomers on electrochemical performance have not been focused in batteries and two isomers are reported for Zn-ion batteries here.
The isomer tetrathiafulvalene (TTF) could store two monovalent anions reversibly, showing remarkable performance that outperformed most of the reported organic electrode materials for zinc-ion batteries.
The isomer tetrathianaphthalene (TTN) could only reversibly store one monovalent anion and upon further oxidation, it would undergo an irreversible solid-state molecular rearrangement to TTF.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2015
·
IF 8.354
Chuanjian Zhang,Zhou Lin,Zhenzhong Yang,Dongdong Xiao,Pu Hu,Hongxia Xu,Yulong Duan,Shuping Pang,Lin Gu,Guanglei Cui
Germanium has been investigated intensively for its high specific capacity and tough nature, which make it a promising candidate anode for high energy lithium-ion batteries. However, the rational design of a germanium electrode with enhanced electrochemical performances is still a big challenge. Herein, we designed and synthesized germanium microcubes with a hierarchical structure directly on titanium foil via a simple hydrogen reduction method. An ultrahigh initial Coulombic efficiency of 91.8% was acquired due to the high crystallinity of germanium for reversible lithium insertion and extraction, less adverse side reaction for irreversible lithium loss, and unique hierarchical structure for easier electrolyte penetration. In addition, the Li2CO3-predominated solid electrolyte interface contributes significantly to the excellent cycling and rate performances of the anode. Both half and full cell performances demonstrate that germanium has potential applications in high-performance lithium-ion batteries.
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 Physical Chemistry C
·
2022
·
IF 4.177
Qiuping Zhou,Dawei Wang,Yang Wang,Lubin Ni,Huaihao Zhang,Jing Zhao
Rechargeable aluminum-ion battery (RAIB), as a promising candidate for the next-generation energy storage system, engages considerable attention because of a high theoretical specific capacity, abundant elemental source, and low cost. Nevertheless, limited applicable positive electrode material with highly reversible aluminum storage ability has been a major barrier in the pursuit of better RAIB. Herein, we prepared ultrathin MoS1.68Se0.32 alloy nanoflakes with few-layer (single layer) thickness for the positive electrode of RAIB. The electrochemical performances demonstrate the feasibility of reversible Al3+ intercalation in ultrathin MoS1.68Se0.32 showing good properties. The DFT calculations shed light on the possible Al3+ intercalation sites in MoS1.68Se0.32, where the interlayer energy barriers are lowest.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Junkun Liu,Jiaxing Qi,Boyu Wang,Yunju Wang,Guobao Xu,Hongyu Wang
LiPF6 dissolved in dimethyl carbonate (DMC) is one of the cheapest groups of electrolyte solutions in dual-ion batteries. Generally, the discharge capacity of anion storage delivered by the graphite cathode grows with increasing LiPF6 concentration. This fact is consistent with the irreversible storage of DMC-solvated PF6–, and then, the underlying mechanism is clarified by the electrochemical tests and ex situ X-ray diffraction (XRD) measurements of graphite cathodes as well as infrared (IR) and Raman spectroscopy characterizations of solutions. Moreover, quaternary ammonium salts have facile dissociation, which can effectively regulate the solvation state of the anion and the interaction between ion pairs in the electrolyte. A small amount of tetrabutylammonium hexafluorophosphate (TBAPF6) is introduced into the highly concentrated LiPF6-DMC solution to improve the performance of the graphite cathode. The discharge capacity of the Li/graphite cell has increased by approximately 50%. This effect is also correlated with the solvation state of the anion. This study provides an insightful clue for the choice of electrolyte solution in dual-ion batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Qijiu Deng,Runrun Wang,Yumeng Wang,Zhaohui Yang,Bo Gou,Jilin Li,Yinglin Yan,Rong Yang
Exploration of suitable electrode hosts with large open channels that can reversibly accommodate K + with large radius have been extensively investigated. Nevertheless, the reported inorganic counterparts were inevitably restricted by the difficulty of large K + diffusion capability in crystal structure and the huge volume change. Herein, we report a bifunctional vanadium-based metal–organic framework (MIL-47) with double active centers and larger lamellar spacing that could serve as both cathode and anode material , respectively by controlling the redox potential range in potassium-ion batteries. The results suggest that the stable K-storage mechanism is the reversible rearrangement of the conjugated carboxyl groups of organic terephthalic acid into enolate and the reversible redox activity of V ions , with the specific capacity of 272 mAh g −1 (0.01–1.5 V) and 50 mAh g −1 (1.5–3.8 V) at the current density of 10 mA g −1 for MIL-47 anode and MIL-47 cathode, respectively. The unsaturated functional group of MIL-47 and the intermediate bridged V atom not only provide multi-dimensional channels for electron and ion transport but also stabilize its crystal structure. Additionally, a symmetric full-cell in potassium-ion batteries based on MIL-47 was constructed successfully by avoiding the utilization of K metal with safety concerns. Our results provide new insight into structure design for next-generation large-scale energy storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Energy Technology
·
2020
·Vol. 8
·期 6
·2000223
·
IF 3.404
Yaobing Fang,Wanying Bi,Aiye Wang,Wen Zheng,Wenhui Yuan,Li Li
Dual-ion batteries with pure ionic liquid electrolyte (IL-DIBs) have received increasing interest due to their sustainability, high operating voltage, and environmental friendliness. However, owing to the insertion/extraction of large-size ionic liquid cations, the conventional IL-DIBs with a graphite anode suffer from severe volume expansion and graphite exfoliation on the anode, causing a poor cycling performance. Herein, a novel IL-DIB is constructed by introducing a bulk organic material (coronene) as the anode, against a natural graphite cathode. The results show that, in a voltage window range from 1.0 to 4.4 V, the battery has a high discharge specific capacity of ≈73.3 mA h g −1 and exhibits a good cycling performance for 450 cycles with a lower capacity loss of 0.061 mA h g −1 per cycle at a current density of 300 mA g −1 (3 C). Notably, it still maintains a considerable capacity of ≈55.8 mA h g −1 at a high rate of 10 C. In addition, the reversible intercalation/de-intercalation of the Pyr 14 + cations into/from the coronene anode is investigated by ex situ X-ray diffraction and Fourier transform infrared spectroscopy, showing an excellent structure stability of the coronene crystal during the charge–discharge process.
研究领域:
电化学
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材料科学
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）