INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Li Wang,Zhangmiao Ye,Caihong Lin,Yugao Wang,Jinping Li,Jiangfeng Yang
N2O/CO2 separation in the tail gas of adipic acid presents a significant challenge due to the closely resembling physical characteristics exhibited by CO2 and N2O. Herein, adsorption and separation performances of CO2 and N2O on FAU-type zeolite Y with different cations (Na+ and Ag+) were studied comprehensively. After Ag+ exchange, zeolite Y changes from a CO2-selective adsorbent to a N2O-selective adsorbent. AgY shows high N2O uptake (95.7 cm3/g) but relatively low adsorption heat (23.1 kJ/mol), making it suitable for N2O/CO2 separation. In situ Fourier transform infrared spectrometry indicates that N2O is successfully adsorbed on AgY. The breakthrough experiment reveals that AgY exhibits superior performance in the separation of N2O/CO2 at a flow rate of 20 mL/min while also exhibiting a favorable retention time and ratio of retention time with CO2 breakthrough time, which can reach up to 4.1 min and 0.24, respectively, which makes it an optimum N2O/CO2 separation material reported so far.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xiaopeng Li,Haichao Wang,Qingxiang Ma,Jucang Ke,Xiuyun Jiang,Caixia Zhu,Linlin Zhao,Ao Zhang,Hao Chen,Yao Deng,Xinhua Gao,Guangbo Liu,Tian-Sheng Zhao,Noritatsu Tsubaki
The conversion of CO 2 into ethanol with value-added still exists challenge, especially the CO 2 hydrogenation over Co-based catalysts is still C1 product dominated by CH 4 . Here, we report a xNa-CoMnO catalyst to promoting ethanol synthesis from CO 2 hydrogenation. The experimental results indicated that there was almost no adsorption and conversion of CO 2 on pure Co 0 , and the CO 2 hydrogenation production of the CoMnO catalyst prepared by adding Mn was mainly CH 4 . The loading of Na not only increased the concentration of oxygen defects on the CoMnO catalyst, but also improved the strength of the Co-O in the CoMnO catalyst, which was able to adsorb effectively the undissociated *CO in the reaction process, and promote the C-C coupling between the *CO and the generated *CH x , promoted the synthesis of ethanol. Under optimized reaction conditions (240 °C, 3.0 MPa, GHSV = 1200 mL/g/h), the 2Na-CoMnO catalyst showed ethanol selectivity of 18.89 % and space-time yield of ethanol of 1.27 mmol/g/h, which exceeded most of the reported results. More importantly, beyond delivering an excellent-performance catalytic system, this study also provides fundamental insights for the rational design of Co-based catalysts for selective CO 2 -to-ethanol conversion.
研究领域:
催化化学
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能源化学
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环境化学
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材料化学
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工业催化
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Hao Hu,Xia Zhao,Xiang Mao,Yongrun Dong,Wen Li,Zequan Li,Wei Gao
Room temperature phosphorescence (RTP) provides a longer and tunable afterglow time compared to conventional fluorescence, enabling complex information encryption effects. However, traditional RTP materials have a short afterglow, and acquiring the requisite raw materials is challenging. In this study, RTP carbon dots (CDs) were synthesized using a multifaceted method, achieving an extended lifetime of 743.55 ms. The afterglow duration of 23.5 s under 254 nm excitation. Additionally, the afterglow intensity was enhanced through Na doping. Notably, the B2O3 matrix confine the vibration and rotation of the CDs chromophores. Mechanisms such as hydrogen bonding and covalent bonding collectively mitigate nonradiative decay of the triplet exciton. Furthermore, the potential application of these materials in information encryption is demonstrated. This investigation serves as a valuable reference for enhancing the afterglow properties and applications of RTP-CDs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Guomin Sun,Jiaping Guan,Yu Chen,Litao Lin,Xiaohui Zhu,Xiaogu Huang
As a significant branch of cathodes for sodium-ion batteries (SIBs), the O3-type layered oxide usually receives extensive attention due to its high theoretical capacity. Due to the high tetrahedral site energy of Na+ diffusion transition state, the kinetics of the charge and discharge processes is sluggish. When the concentration of Na+ decreases, the transition metal layers undergo relative slip, leading to layer structure rearrangement and interface degradation, which result in a decrease in performance. In this work, we propose a strategy to optimize the above problem by varying the sodium content to prepare biphasic cathode materials. The prepared Na0.85Fe0.22Ni0.33Mn0.45O2 cathode has an O3/P2 biphasic structure. It shows excellent electrochemical performance, with an initial discharge specific capacity of 121.3 mAh g–1 at 0.1 C and a capacity retention rate of 94.9% after 100 cycles at 0.2 C. A small amount of P2 is introduced into the phase structure of the O3 to improve the diffusion kinetics and enhance the cycling stability. Due to the cooperative effect of O3/P2, the phase transition of O3/P2–O3/P3/P2 occurs in the electrochemical process, and the complex phase transition of O3–O’3 is inhibited. This study provides an idea for the preparation of high-performance cathode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 166
·期 3
·A5075
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IF 3.662
Bizhe Su,Jiaolong Zhang,Manabu Fujita,Wenchong Zhou,Patrick H.-L. Sit,Denis Y. W. Yu
Recent experimental and theoretical studies on the family of Li-rich layered materials show that they can deliver much higher capacities than traditional Li-transitional metal oxides. This also leads to great interests in Na-rich layered oxides as alternative positive electrode materials for sodium-ion batteries for large-scale energy storage. Herein, we report a Na-rich material, Na2SeO3 with an unconventional layered structure as a positive electrode material in NIBs for the first time. This material can deliver a discharge capacity of 232 mAh g−1 after activation, one of the highest capacities from sodium-based positive electrode materials. X-ray photoelectron spectroscopy indicates the oxidation state of selenium remains unchanged during the charge process. Theoretical simulation shows that after removal of Na, spin is situated around oxygen atoms near the Na vacancy, and the projected density of state of oxygen electron is close to the Fermi level. These suggest the involvement of oxygen during charge-discharge. This work will propel new searches of high-capacity sodium-based positive electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Guolin Cao,Zhuomin Jin,Yuebing Dong,Qiyong Shi
LiNi0.8Co0.1Mn0.1O2 (NCM811) is considered a cathode material with great commercial potential. However, Li/Ni mixing, residual lithium compounds, and side reaction limited the popularity of Ni-rich batteries. Thus, a simple strategy is employed to realize a comodification of Na+ and Y3+. As demonstrated in the XPS results, the residual lithium compounds (Li2CO3/LiOH) and side reaction products are inhibited. The capacity retention rate of the modified NCM811 is 86.4% after 300 cycles at 1C, 34.5% higher than that of the pristine. Na+ expands the space of the Li+ slab, thereby reducing the charge transfer resistance and inhibiting the mixed discharge of cations. Meanwhile, Y3+ decreased the lattice along c-axis to restrict the movement of cations (Ni2+) into the Li site, with improving the exchange of Li+. The formed LiYO2 coating layer restrains the direct contact between the electrolyte and the electrode material so that side reactions are inhibited, reducing the electrochemical resistance.
研究领域:
材料科学
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电化学
·
储能技术
·
锂离子电池
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2016
·
IF 9.407
Yanlin Han,Minghui Yang,Ye Zhang,Junjie Xie,Dongguang Yin,Chilin Li
Na-ion batteries (NIBs) are becoming more promising owing to potentially better rate performance than Li-ion batteries apart from resource abundance. However, activation of Na-storage electrochemistry remarkably depends on the modification or expansion of existing structure prototypes by adjusting the substituent and linkage of their ligand moieties or the redox transition metals. Recently the natural existence of mineral phases has inspired us to explore more plentiful artificial analogues, most of which possess open framework properties. Here for the first time we propose a novel bronze phase (tetragonal tungsten bronze, TTB) of oxyfluoride (KNb2O5F) as a potential NIB anode. This tunnel-type open framework is achieved by equimolar KF doping into T-Nb2O5 with K and F as channel supporter and ligand substituent, respectively. The improvement of intrinsic conductivity and near-zero strain sodiation enable a highly reversible capacity even by employing undecorated samples of less surface defects. Reduction of Nb5+ may cause a uniform precipitation of fine NbO2 nanoparticles around larger solidated KNb2O5F.
研究领域:
材料科学
·
储能
·
电化学
·
无机化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Waquar Ahmed Khokhar,Ning Zhao,Weilin Huang,Hao Wang,Zhijie Bi,Xiangxin Guo
Solid-state batteries with alkali metals (Li, Na, etc.) as anodes have the potential to achieve high energy density. However, the Li penetration through the garnet occurs without preindication during electrochemical cycling, leading to sudden short circuit and safety concerns. Various improvement strategies are developed but such a problem still exists when the current density exceeds the critical value. In contrast, the electrochemical Na plating/stripping on the β″-alumina ceramic electrolyte (BASE) has been explored with improved interfacial contacts by introducing an Au intermediate layer. When being cycled around the critical current density, the polarization potential of the Na/Au/BASE symmetric cells increases progressively until it stabilizes at a certain value without the sudden short circuit. It is revealed that the increasing polarization originates from a gradual Na penetration into the BASE ceramics from the interface and the subsequent stable cycles correlate with the formation of a sustainable Na/Au/BASE interface. These results disclose the difference in a growth model of metal filaments through Li and Na solid electrolytes, shedding new light on understanding of the metal penetration in solid electrolytes.
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Ming Li,Xiongwei Gong,Yilong Hu,Yi Shuai,Yunong Zhou,Mingliang Wu,Xiaoyi Huangyang,Jinqi Huang,Yingpeng Wu
Due to the abundant availability of Na resources, Na batteries garner significant attention. Anode-free Na batteries, devoid of active negative materials, are deemed promising candidates for the next generation of high-energy-density Na batteries. The cyclic stability of anode-free Na batteries primarily hinges on the stability of the limited Na supplied by the cathode, and the design of the anode substrate plays a pivotal role. In this study, a cost-effective aluminum–tin eutectic alloy substrate is developed using a straightforward melting process. In eutectic alloy, tin element is present in its metallic form, which facilitates the disruption of the compactness of the Passivation film (Al 2 O 3 ). Besides, tin metal and tin dioxide on the surface of the eutectic alloy show a strong Na affinity (strong binding energy with Na atom and lower Na nucleation barrier), thereby promoting the uniform nucleation of sodium. This eutectic alloy substrate enables highly reversible Na plating/stripping with an average coulombic efficiency of 99.97%, and the cycle life exceeds 4000 cycles. Coupling with Na 3 V 2 (PO 4 ) 3 , the AlSn-2%-NVP full cell exhibits a capacity retention of up to 81% after 100 cycles, significantly outperforming coated carbon aluminum foils and aluminum foils. This study introduces an efficient approach to the anode-free Na battery.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Jianghe Liu,Zijian Ye,Xingcheng Hu,Sultan Ahmed,Shenhua Song
The scarcity of Li along with its uneven distribution in earth has become a great challenge in the field of electrochemical energy storage. Replacing Li with Na may address the above issues, as Na and Li are very similar in electrochemical characteristics, and Na is abundant in nature with low cost. Herein, the Na-ion conducting gel polymer membranes comprising a 2-HEC/EMITf/NaTf system are synthesized by employing the solution-casting method. The effects of NaTf salt and EMITf ionic liquid on the electrical and electrochemical properties of membranes are investigated. It is demonstrated that the salt is dissolved in the polymer matrix, thereby raising its ionic conductivity (IC), which is further raised by ionic liquid incorporation. The optimized membrane (2-HEC:EMITf:NaTf = 1:0.6:0.15 in mass, named as GPE/Na-3) exhibits a high room-temperature IC of 1.11× 10–3 S cm–1 along with a wide electrochemical stability window of 4.8 V. The membrane also displays sound tensile strength and breaking strain (4.5 MPa and 94.4%, respectively). As the electrolyte, the optimized membrane is combined with graphene electrodes to fabricate a supercapacitor. The supercapacitor presents a high capacitive behavior with an appealing cyclic stability. As evident from the above performance, it is believed that the Na-ion conducting gel polymer membrane possesses potential applications in future Na-ion energy storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
He Li,Yunhui Wang,Jiali Jiang,Yiyong Zhang,Yueying Peng,Jinbao Zhao
In this work, CuS microspheres are synthesized by a facile microwave synthesis without any template or additive. As-prepared CuS microspheres display steady reversibility by adopting triethylene glycol dimethyl ether (TEGDME) as the electrolyte solvent and adjusting cut-off voltage to 0.6 − 3.0 V. The discharge capacity stands at 162 mAh g −1 after 200 cycles with the capacity retention of 95.8%. Electrochemical kinetics of CuS electrodes is investigated by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and galvanostatic intermittent titration technique (GITT) tests. Beyond that, electrochemical reactions of CuS electrodes are explored using ex-situ X-ray diffraction (XRD). As far as we know, it is not only the best performance of CuS electrodes in Na-ion batteries (NIBs) but also the first time that the kinetics and reaction mechanism of CuS in NIBs are investigated.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Wenshuai Jiang,Shumin Wang,Fei Lin,Zhenxin Li,Xiang Tian,Ruixia Ti,Chaoxin Zhang,Shaozhe Wang,Guoan Zhao,Wu Ren,Yi Yu
In this paper, we found that the presence of sodium chloride (NaCl) can effectively inhibit the diffusion of graphene oxide (GO) in water. Based on this discovery, we reported a simple preparation method of GO paper regulated by Na ions . By adjusting the drying temperature and the mass fraction of NaCl solution, the preparation and complete stripping of GO paper can be easily completed, thereby obtaining free-standing GO paper. Further, we also found that the introduction of sodium ions would cause changes in the microwave irradiation spectrum of GO paper, and the change was related to the mass fraction of NaCl solution used, which could be used to detect sodium ions and the concentration of NaCl solution. Besides, our study also showed that MWRGO paper with NaCl solution treatment can more effectively remove methylene blue in water, compared with MWRGO paper without NaCl solution treatment. This study provides the possibility of the preparation of GO paper based on seawater and also provides a new method for the detection of sodium ions and determination of sodium chloride solution concentration. It has important application prospects in the preparation of GO paper, sensor and water treatment.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 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）