JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 8
·082512
·
IF 4.316
Nan Ji,Tiejian Zhu,Hao Peng,Feng Jiang,Wei Huang,Yu Gong
In the common spent fuels, actinides and fission products are generally in the form of oxide, so direct dealing with oxide will be the most convenient way for spent fuel reprocessing. In this work, the electrolytic reduction of Gd2O3 has been studied in LiCl-KCl-Li2O (1 wt%) melts at different conditions, and the effect of sintering temperature on the porosity of Gd2O3 powder and the electrochemical behavior of Li2O in LiCl-KCl molten salt were investigated, too. The diffusion coefficient of O2− was calculated to be 2.0 × 10−5 cm2·s−1 in LiCl-KCl melts on the Mo electrode at 923 K by cyclic voltammetry (CV). The electrode process of Gd2O3 powder was also analyzed in LiCl-KCl-Li2O (1 wt%) melts, and the formation process of composite oxide LiGdO2 was determined. By the analysis of XRD and oxygen content characterization, it was suggested that after 74 h electrolysis (923 K, 3.40 V), the oxygen content of Gd2O3 cathode decreased from 12.25 wt% to 1.41 wt%, indicating 88.5% Gd2O3 was reduced to metal.
研究领域:
核化学与核燃料循环
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 7
·2919-2928
·
IF 1.754
Jiang Yuqi,Gao Shuaibo,Li Peng,Ma Yongsong,Yin Huayi,Wang Dihua
The waste LiCl–Li 2 O oxide reduction salt was solidified and transformed into sodalite by the spark plasma sintering method. Compared with traditional solidification method, SPS operates at a lower pressure, lower temperature, shorter processing time, and without sintering additive. The SPS-solidified sodalite presents a low porosity of 0.37% and low leaching rates of 2.21 g m –2 d –1 for Cs, 3.05 × 10 –1 g m –2 d –1 for Ba, and 3.12 × 10 –1 g m –2 d –1 for Sr. Overall, the SPS is a promising method to solidify various waste OR salts.
研究领域:
材料科学
·
核废料管理
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Wei Wu,Ranlu Zheng,Yixuan Bai,Qingyi Feng,Bo Li,Yongliang Tang,Hongxiang Deng,Xiaotao Zu,Shuangyue Wang,Xia Xiang
Graphene-based lithium-ion batteries suffer from the poor initial coulombic efficiency and low mass loading. A convenient method is proposed to replenish the Li loss in the first cycle and improve the cycling stability of high mass loading batteries simultaneously in this work. Graphene is modified by introducing LiCl (G/LC) through a wet ball-milling process, which leads to the formation of hybrid solid electrolyte interface. As a result, the half-cells based on high mass loading G/LC electrodes exhibit obviously improved initial coulombic efficiency (>90 %) and high areal specific capacity of 2.53 mAh cm −2 at high current density of 0.55 mA cm −2 . Furthermore, the full-cells based on G/LC anode paired with LiNi 6 Mn 2 Co 2 O 2 cathode deliver a high initial coulombic efficiency of 76.7 %, as well as a high-capacity retention of 97.52 % after 200 cycles, suggesting the potential application of this extend strategy for rechargeable batteries.
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
National Science Review
·
2022
·Vol. 9
·期 7
·
IF 23.178
Zhu Yuanyuan,Zheng Shuanghao,Lu Pengfei,Ma Jiaxin,Das Pratteek,Su Feng,Cheng Hui-Ming,Wu Zhong-Shuai
MXenes are one of the key materials for micro-supercapacitors (MSCs), integrating miniaturized energy-storage components with microelectronics. However, the energy densities of MSCs are greatly hampered by MXenes’ narrow working potential window (typically ≤0.6 V) in aqueous electrolytes. Here, we report the fabrication of high-voltage MXene-MSCs through the efficient regulation of reaction kinetics in 2D Ti3C2Tx MXene microelectrodes using a water-in-LiCl (WIL, 20 m LiCl) salt gel electrolyte. Importantly, the intrinsic energy-storage mechanism of MXene microelectrodes in WIL, which is totally different from traditional electrolytes (1 m LiCl), was revealed through insitu and exsitu characterizations. We validated that the suppression of MXene oxidation at high anodic potential occurred due to the high content of WIL regulating anion intercalation in MXene electrodes, which effectively broadened the voltage window of MXene-MSCs. Remarkably, the symmetric planar MXene-MSCs presented a record operating voltage of 1.6 V, resulting in an exceptionally high volumetric energy density of 31.7 mWh cm−3. With the ultra-high ionic conductivity (69.5 mS cm−1) and ultralow freezing point (−57°C) of the WIL gel electrolyte, our MSCs could be operated in a wide temperature range of −40 to 60°C, and worked for a long duration even at −40°C, demonstrative of its practicality in extreme environments.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Fan Wang,Xieraili Maimaitiyiming
The synthesis of conductive hydrogels with high mechanical strength, toughness, optimal fracture growth rate and the capability to detect diverse human body movements poses a significant challenge in the realm of flexible electronics. In this study, a one-pot technique utilized effectively to fabricate conductive materials by doping LiCl into a mixture of polyvinyl alcohol (PVA) and gelatin. The PVA/gelatin/LiCl 0.3 (PGL) conductive hydrogel demonstrates exceptional robustness, flexibility, and resistance to deformation, enabling the monitoring of various physiological signals such as temperature and humidity. Additionally, the PGL demonstrates exceptional elongation properties (up to 1111.32 %), high lifting capacity (up to 25 kg), resistance to deformation, and sustained stability of peak signals even after 300 cycles at 50 % strain. The hydrogel electrolyte exhibits a conductivity of 2.114 S/m at 25 °C and a specific capacitance of up to 48.75 F/g, along with favorable mechanical and electrochemical characteristics. These findings suggest that the PVA/gelatin/LiCl 0.3 hydrogel supercapacitor (PGLSC) conductive hydrogel shows significant potential for integration into flexible electronics and wearable technology devices.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
eScience
·
2023
·
IF 0
Yuxuan Wang,Wen Chen,Jingchao Fu,Yueli Liu
Adsorbent-assisted air water harvesting (AWH) may help alleviate the current global freshwater scarcity crisis. However, the weak sorption capacity of various adsorbents and the high energy required to release water are two long-standing problems. Herein, we propose a class of green and clean adsorbent, TpPa-1@LiCl composite, whose sorption capacity is greatly improved to 0.37 and 0.80 g g −1 under 30% and 90% relative humidity (RH), respectively, and which has excellent stability, showing only a slight decrease (0.79%) after 10 sorption–desorption cycles (1400 min). This TpPa-1@LiCl composite can reach equilibrium within 2 h and undergo complete desorption in 30 min under air mass 1.5 G irradiation. A corresponding solar-driven AWH device can complete up to 4 sorption–desorption cycles per day, with each cycle capable of collecting 0.34 g g −1 water without additional energy input, which implies TpPa-1@LiCl composite has the potential for achieving sorption-assisted AWH with high efficiency and rapid cycling.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
INTERNATIONAL JOURNAL OF THERMOPHYSICS
·
2019
·Vol. 40
·期 11
·1-11
·
IF 0.853
He Yijian,Cao Chao,Xu Jiachen,Sun Yue,Chen Zepeng,Chen Guangming
Aqueous LiCl solutions are typical desiccants. Specific thermal capacity data, covering the temperatures range from 233.15 K to 343.15 K and salt mass fractions ranging from 0.15 to 0.45, have been obtained experimentally. The correlating equation proposed reproduces these experimental data with an average absolute deviation of 0.35 %, and a maximum absolute deviation of 1.15 %. Experimental data from the literature, and theory-based calculations, are reproduced by the new equation with a maximum deviation of 16.13 %, and 10.77 %, respectively.
研究领域:
化学工程
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jinghua Wang,Hongyou Cui,Jiangang Wang,Zhihe Li,Ming Wang,Weiming Yi
Conversion of glucose to 5-hydromethyl furfural (HMF) and levulinic acid (LA) was systematically investigated in LiCl·3H 2 O without additional catalyst. Based on the experimental investigations by using glucose, fructose and HMF as the reaction substrate separately, corresponding reaction kinetics in LiCl·3H 2 O were modelled by first-order assumption. Kinetic analysis demonstrates that high temperature favors the formation of LA, while low temperature facilitates to selectively form humins. To achieve high LA yield, at least a temperature of 140 °C is required. Without additional catalyst converting glucose to LA in LiCl·3H 2 O, humins was predominantly derived from glucose and HMF, and glucose isomerization is the reaction rate-determining step. The activation energies of the main reactions are 160.96 kJ/mol (glucose to HMF), 139.20 kJ/mol (fructose to HMF), and 71.81–76.48 kJ/mol (HMF to LA) respectively. The activation energies for humins formation were 23.45 kJ/mol from glucose, 49.54 kJ/mol from fructose, and 42.15–65.85 kJ/mol from HMF, respectively. It is verified that LiCl·3H 2 O, as compared to aqueous medium, is an excellent reaction medium for converting glucose to LA as it can provide the active centers for fructose to HMF reaction and HMF to LA reaction, but lack of highly efficient Lewis acid for glucose isomerization. With the addition of Lewis acid (such as AlCl 3 and FeCl 3 ), as high as 83.4% of LA yield can be obtained respectively when directly converting glucose, with the total selectivities of LA and HMF of 95%.
研究领域:
生物化学
·
催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Rui-Zhi Cui,Wu Li,Ya-Ping Dong
The phase equilibria relationship between the quaternary system LiCl–KCl–Li2SO4–K2SO4–H2O and its subsystems LiCl–KCl–H2O and LiCl–Li2SO4–H2O was studied by the isothermal dissolution equilibrium method at 288.15 K, and the corresponding phase diagrams were drawn. At 288.15 K, ternary systems LiCl–KCl–H2O and LiCl–Li2SO4–H2O all belong to the simple type. In the phase diagram of the quaternary system LiCl–KCl–Li2SO4–K2SO4–H2O, there are five equilibrium solid phase crystallization fields: LiCl·2H2O, KCl, Li2SO4·H2O, K2SO4, and Li2SO4·K2SO4. Compared with the multitemperature phase diagrams of this system at 288.15–348.15 K, it was found that the basic configuration of the phase diagrams is the same. As the temperature increased, the phase region of double salt Li2SO4·K2SO4 clearly increased, whereas the phase region of single salt KCl and K2SO4 clearly decreased. On the basis of the experiment, the extended Harvie–Weare model of the Pitzer model was used to predict the solubility data of the quaternary system. The simulated and measured values were basically in good agreement.
研究领域:
化学热力学
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 8
·D276
·
IF 3.12
Yu-Ke Zhong,Kui Liu,Ya-Lan Liu,Yue-Xiang Lu,Tai-Qi Yin,Lin Wang,Zhi-fang Chai,Wei-Qun Shi
Uranium-molybdenum (U-Mo) alloys especially the γ-U-Mo phase, with excellent irradiation performance at high temperatures, have been extensively studied as low-enriched-uranium candidate fuels for strengthening nuclear security and nonproliferation worldwide. Herein, we provide a facile method to successfully prepare the γ-U-Mo alloys (U-10Mo and U-8Mo) directly from oxide precursors via electro-reduction by constant cell voltage electrolysis in LiCl molten salt at 986 K. The reduction mechanism was elucidated through cyclic voltammetry using the metallic cavity electrode (MCE) combined with XRD, SEM and EDS characterizations toward the electrolysis products under different conditions. It was found that the reduction of mixed MoO3-UO2 oxides may take place in three steps. Firstly, MoO3 was reduced to Li4Mo5O12, and then Li4Mo5O12 was converted into Mo. Finally, the U-Mo alloys were formed due to the underpotential deposition of U on the pre-formed Mo. In addition, the effects of cell voltage, sintering temperature and mixture composition on the electrochemical reduction were investigated. The results found that the reduction rate increased with the augmentation of applied potential and the decrease of sintering temperature. Moreover, the favorable composition of the mixed precursor varied from 24 at% to 21at%. The reduction conversion rate was determined to be 93.7% by ICP and TGA.
研究领域:
材料科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2022
·
IF 7.72
Xin Du,Shaoqiang Guo,Sheng Wang
Fission product tellurium causes severe embrittlement of nickel alloys in nuclear molten fuel salt systems. This paper investigates the tellurium chemistry in molten LiCl-KCl-Li 2 Te salts and the tellurium reactions at the alloy interface. The reactions for the two-step reduction of Te 0 and the electrochemical formation of nickel tellurides have been identified from cyclic voltammograms. The corrosion of UNS N10003 alloy with different tellurium salt chemistries and applied potentials found that tellurium corrosion attack is only present at potentials more positive than the Ni 1.43 Te / Te 2 − potential. The critical potential is thus suggested for mitigating tellurium embrittlement using the redox control technique.
研究领域:
材料科学
·
核工程
·
电化学
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Feng Wang,Junxiao Wang,Gaofeng Li,Zhihua Guo,Jun Chu,Xinping Ai,Zhiping Song
To improve the energy density of dual-ion batteries (DIBs), for the first time we employ a Cl – -insertable p-type polymer, poly(butyl viologen dichloride) (PBV-Cl 2 ), as cathode material , and low-cost LiCl/DMSO (dimethyl sulfoxide) solution as electrochemically favorable electrolyte. Benefiting from the highest reversible capacity of the PBV-Cl 2 cathode among all p-type polymers (183 mAh g –1 based on the weight involving anion), and greatly lowered Li + /Li potential (by 0.5 V) in DMSO compared to that in conventional ester solvents, the Li–PBV-Cl 2 DIB achieves the highest actual energy density of 470 Wh kg –1 . After adding fluoroethylene carbonate (FEC) additive in the electrolyte for better Li anode compatibility, it also exhibits an excellent cycling stability (88% after 300 cycles) and a superior rate capability (75% at 5000 mA g –1 ). The concepts of Cl – charge carrier, polyviologen cathode, and LiCl-based electrolyte provide significant insights for the development of high-energy, low-cost, and sustainable DIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）