MICROPOROUS AND MESOPOROUS MATERIALS
·
2019
·
IF 4.182
Zhi-Cai Xing,Su-Zhen Liu,Guo-Qin Zhang,Yang Zou,Li-Feng Wang,Xiao-Ming Ren
Besides of applications in the battery, fast Na + -ion conductors have important applications in electrochemical sensors , electrochromic devices , and oxygen separation membranes . However, investigations on room-temperature solid-state Na + -ion conducting materials were scarcely reported. A Na-rich metal hexacyanoferrate (Na–FeHCF) was synthesized via a facile precipitation method and characterized by EA (Elemental Analysis), ICP (Inductively Coupled Plasma spectrometer), IR (Infrared Spectroscopy), TGA (Thermogravimetric Analysis), PXRD (Powder X-ray Diffraction), and water sorption/desorption. Na–FeHCF exhibits water-mediated ion conductivity. The Na + -ion conductivity (σ) of Na–FeHCF is 1.27 × 10 −8 S cm −1 under anhydrous condition, and it increased to 2.52 × 10 −3 S cm −1 at 98% RH (relative humidity). As a room-temperature ion conductor, its application as an impedance moisture detecting device has been explored. Na–FeHCF coating with poly(vinylidene fluoride) film on interdigital electrodes exhibited good linearity, nice repeatability, small hysteresis, short response and recovery time.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Haonan Zhou,Xiaoqian Zhang,Guowen Zhou,Muslum Demi̇r,Zepeng Lei,Wei Zhang,Xiaohui Wang
The escalating concern about plastic pollution has intensified research efforts in developing degradable bioplastics. However, the fabrication processes of all-natural bioplastics are fraught with tremendous challenges, notably the use of toxic chemicals and the generation of hazardous waste. Herein, we report an environmentally friendly method for synthesizing a sustainable konjac glucomannan (KGM) bioplastic. The intermolecular interactions of KGM chains were reconstructed by substituting the original H-bonds with dynamic covalent bonds, which were formed via the Schiff base reaction at the oil–water interface. The resulting thermo-processable KGM bioplastic exhibited multiple advantages, such as low glass-transition temperature (Tg), rehealability, reprocessability, satisfactory tensile strain, and excellent resistance to water and other chemicals. Significantly, only water was used as the reaction medium throughout the entire preparation, which avoided the consumption of organic solvents and the production of hazardous waste. This work provides an eco-friendly approach to craft konjac glucomannan bioplastic as viable alternatives to traditional plastics.
研究领域:
材料科学
·
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jie Li,Jianhui Lan,Runjian Cao,Jun Sun,Xiangdong Ding,Xue Liu,Liyong Yuan,Weiqun Shi
Covalent organic frameworks (COFs) with crown ether units have drawn great attention due to their potential applications in adsorption, catalysis, and sensing. However, employing crown ethers to construct COFs is still challenging in light of the flexible nature of macrocycles. Here, a highly crystalline one-dimensional covalent organic framework (1D-18C6-COF) with crown ether units on the ribbon edge was synthesized. The water-mediated hydrogen bond network and π–π stacking hold the 1D COF ribbons together. The combination of experimental and DFT studies demonstrated that the hydrogen bond network plays a crucial role in the structure crystallinity. The 1D-18C6-COF was applied as an adsorbent for strontium, and it exhibited rapid kinetics with good selectivity. In the competitive adsorption experiment, a separation factor of 1900 was achieved, representing one of the largest values for cesium/strontium separation. This work provides new insights into the design and functional exploration of crystalline COFs with flexible units.
研究领域:
材料科学
·
化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Xingyu Hu,Hui Shi,Yilei Zheng,Penghui Shao,Liming Yang,Xubiao Luo
The sustainable recovery of valuable metals from end-of-life lithium-ion batteries (LIBs) has become essential for relieving the supply-demand contradiction of key resources. However, the high similarity in physicochemical properties of transition metals poses a fundamental challenge for the selective recycling. Here we proposed a facile strategy for defining the demarcation line of precipitation/dissolution behavior for precise Ni/Co separation. A malonic acid-based deep eutectic solvent (DES) is developed, emphasizing the H 2 O-mediated competitive coordination and differentiated solubility. We discovered the distinctive formation of [Ni(H 2 O) 6 ] 2+ and [CoCl 4 ] 2- in the DES-20 % H 2 O system. Furthermore, the K sp differences of the Ni-complex and Co-complex in the C 3 H 2 O 4 2- -rich environment was effectively magnified. These significant differences synergistically enable the generation of C 3 H 2 NiO 4 ·2H 2 O precipitation (∼ 99.9 % purity), achieving a remarkable Ni/Co separation factor of 125, which guarantees sequential separation of all metals. This universal methodology along with in-depth mechanism understanding provides a guideline toward value-added recovery of LIBs.
研究领域:
材料科学
·
化学工程
·
环境科学
·
电化学
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-10
·
IF 12.121
Tai Ziyang,Wei Junjie,Zhou Jie,Liao Yue,Wu Chu,Shang Yinghui,Wang Baofeng,Wang Qigang
With the world’s focus on wearable electronics, the scientific community has anticipated the plasticine-like processability of electrolytes and electrodes. A bioinspired composite of polymer and phase-changing salt with the similar bonding structure to that of natural bones is a suitable electrolyte candidate. Here, we report a water-mediated composite electrolyte by simple thermal mixing of crystallohydrate and polymer. The processable phase-change composites have significantly high mechanical strength and high ionic mobility. The wide operating voltage range and high faradic capacity of the composite both contribute to the maximum energy density. The convenient assembly and high thermal-shock resistance of our device are due to the mechanical interlocking and endothermic phase-change effect. As of now, no other non-liquid electrolytes, including those made from ceramics, polymers, or hydrogels, possess all of these features. Our work provides a universal strategy to fabricate various thermally manageable devices via phase-change electrolytes.
研究领域:
材料科学
·
电化学
·
可穿戴技术
·
复合材料
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）