JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·Vol. 172
·期 1
·012505
·
IF 3.3
Shangrun Ma,Fuxing Zhu,Lingxin Kong,Liguo Zhu
Titanium and its alloys are widely used in aerospace and ocean engineering because of their excellent properties. Molten salt electrolysis is a cost-effective and efficient method for producing titanium powder. However, titanium powder prepared via this method contains high oxygen levels. To address this issue, a novel approach for producing low-oxygen titanium powder by molten salt electrolysis containing LaCl3 is proposed in this study. Molten salts were selected and their physicochemical properties determined. The density, viscosity, and surface tension of the molten salt increased with LaCl3 content and decreased with increase in temperature in the NaCl-KCl-MgCl2-LaCl3-TiClx molten salt system. For optimal separation of electrolytic products from the molten salt and electrolytic slag, lower LaCl3 content and higher temperatures are recommended. Electrochemical tests revealed that the Ti precipitation reaction was quasi-reversible and diffusion-controlled. Finally, molten salt electrolysis experiments were conducted, showing that the oxygen content of the titanium powder decreased with increased temperature, LaCl3 concentration, and electrolysis time. At 4 wt% LaCl3, titanium powder with a low oxygen content of 500 mass ppm oxygen was obtained by electrolysis at 850 °C and 2.5 V for 1 h. This study provides theoretical guidance for the low-cost, short-process preparation of low-oxygen titanium powder.
研究领域:
材料科学
·
冶金工程
✓ 已验证
产品关联
DOI
高影响因子
NATURE
·
2023
·Vol. 616
·期 7955
·77-83
·
IF 64.8
Yin Yi-Chen,Yang Jing-Tian,Luo Jin-Da,Lu Gong-Xun,Huang Zhongyuan,Wang Jian-Ping,Li Pai,Li Feng,Wu Ye-Chao,Tian Te,Meng Yu-Feng,Mo Hong-Sheng,Song Yong-Hui,Yang Jun-Nan,Feng Li-Zhe,Ma Tao,Wen Wen,Gong Ke,Wang Lin-Jun,Ju Huan-Xin,Xiao Yinguo,Li Zhenyu,Tao Xinyong,Yao Hong-Bin
Inorganic superionic conductors possess high ionic conductivity and excellent thermal stability but their poor interfacial compatibility with lithium metal electrodes precludes application in all-solid-state lithium metal batteries 1 , 2 . Here we report a LaCl 3 -based lithium superionic conductor possessing excellent interfacial compatibility with lithium metal electrodes. In contrast to a Li 3 MCl 6 (M = Y, In, Sc and Ho) electrolyte lattice 3 , 4 , 5 , 6 , the UCl 3 -type LaCl 3 lattice has large, one-dimensional channels for rapid Li + conduction, interconnected by La vacancies via Ta doping and resulting in a three-dimensional Li + migration network. The optimized Li 0.388 Ta 0.238 La 0.475 Cl 3 electrolyte exhibits Li + conductivity of 3.02 mS cm −1 at 30 °C and a low activation energy of 0.197 eV. It also generates a gradient interfacial passivation layer to stabilize the Li metal electrode for long-term cycling of a Li–Li symmetric cell (1 mAh cm −2 ) for more than 5,000 h. When directly coupled with an uncoated LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode and bare Li metal anode, the Li 0.388 Ta 0.238 La 0.475 Cl 3 electrolyte enables a solid battery to run for more than 100 cycles with a cutoff voltage of 4.35 V and areal capacity of more than 1 mAh cm −2 . We also demonstrate rapid Li + conduction in lanthanide metal chlorides (LnCl 3 ; Ln = La, Ce, Nd, Sm and Gd), suggesting that the LnCl 3 solid electrolyte system could provide further developments in conductivity and utility.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Zirui Lou,Yingchen Yang,Yichen Wang,Chao Qin,Rong Liang,Yanwen Wang,Zhizhen Ye,Liping Zhu
Ta 3 N 5 is a promising candidate for photoelectrochemical (PEC) water splitting. Recently gratifying photocurrents have been reported through various advanced techniques. However, obtaining high performance Ta 3 N 5 photoanode prepared by direct oxidation and nitridation remains challenging. In this work, efficient Ta 3 N 5 photoanode was fabricated on Ta foil by direct oxidation and nitridation method with LaCl 3 flux mediated treatment. The highest photoresponse (8.2 mA cm −2 @ 1.23 V RHE ) for direct oxidized and nitrided Ta 3 N 5 is achieved with the help of LaCl 3 flux, which is nearly doubled compared to the untreated counterparts. Theoretical analysis suggests an interfacial charge transfer in LaTaON 2 /Ta 3 N 5 heterostructure and significant increase in carrier concentration on La doped Ta 3 N 5 surface. The introduction of LaCl 3 flux brings a new look to this traditional method and it may potentially be applied to large area and low cost photoanodes.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 15
·2310356
·
IF 27.4
Shijie Xu,Xiaobin Cheng,Shunjin Yang,Yichen Yin,Xinyu Wang,Yuzhe Zhang,Dehang Ren,Yujiang Sun,Xiao Sun,Hongbin Yao,Yongan Yang
Li 6 PS 5 Cl (LPSC) is a very attractive sulfide solid electrolyte for developing high-performance all-solid-state lithium batteries. However, it cannot suppress the growth of lithium dendrites and then can only tolerate a small critical current density (CCD) before getting short-circuited to death. Learning from that a newly-developed LaCl 3 -based electrolyte (LTLC) can afford a very large CCD, a three-layer sandwich-structured electrolyte is designed by inserting LTLC inside LPSC. Remarkably, compared with bland LPSC, this hybrid electrolyte LPSC/LTLC/LPSC presents extraordinary performance improvements: the CCD gets increased from 0.51 to 1.52 mA cm −2 , the lifetime gets prolonged from 7 h to >500 h at the cycling current of 0.5 mA cm −2 in symmetric cells, and the cyclability gets extended from 10 cycles to >200 cycles at the cycling rate of 0.5 C and 30 °C in Li|electrolyte|NCM721 full cells. The enhancing reasons are assigned to the capability of LTLC to scavenge lithium dendrites, forming a passive layer of Ta, La, and LiCl.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2026
·
IF 7
Chao Li,Zhichao Zeng,Wenshuo Zhang,Xiaomeng Shi,Yaping Du
Halide solid state electrolytes (SSEs) have gained substantial attention due to their excellent ionic conductivity. However, their interfacial compatibility has been severely criticized. In this work, we synthesized a series of pliable LiCl-[LaCl3–CeCl3-(2-x)GaF3-xAlF3–TaCl5]0.2 SSEs with UCl3 structure to realize excellent cathode/anode interfacial compatibility while ensuring high ionic conductivity. They possess the ionic conductivity up to 1.54 mS cm–1, such excellent ionic conductivity originates mainly from the fast Li+ transport routes in the highly plastic amorphous matrix and rigid UCl3 crystal framework. Integrating it as an additive to conventional halide SSEs (e.g., Li3YCl6) can improve their Li-metal compatibility and provide solid–solid contact stability with the cathode. In addition, applying it as a LiCoO2 cathode additive can construct void-free, highly stable cold-pressed LiCoO2 particles at high voltages and realize high-speed Li+ migration inside the composite cathode. The all-solid-state lithium-ion batteries (ASSLBs) constructed on this basis have realized over 400 cycles at 0.2 C. This work provides a novel approach for the fabrication of halide SSEs with both high ionic conductivity and excellent interfacial compatibility and enables the development of high-performance ASSLBs.
✓ 已验证
产品关联
DOI
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2025
·Vol. 35
·期 11
·3919-3932
·
IF 4.7
Jia ZHAO,Zhi-tao SONG,Gui-min LU
The alloying process of Mg-La in NaCl-KCl-MgCl 2 -LaCl 3 (NKML) melts during electroreduction was elucidated using electrochemical techniques and deep potential molecular dynamics (DPMD) simulations. In the NKML system, the Mg 2+ /La 3+ electrodeposition on the tungsten (W) electrode at 973 K was found to be a one-step process. The nucleation of metal ions on the electrode surface followed an instantaneous nucleation mode and was not influenced by the alloying process. The redox potential and underpotential deposition behavior of the metal ions in the NKML system were accurately predicted by the DPMD simulations, confirming the alloying process of the Mg-La. Additionally, scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis results confirmed that the cathodic deposits consisted of a bright phase and a dark phase, corresponding to the Mg-La alloys and Mg, respectively. The distribution of electrolytic products suggests that the cathodic deposit initially favors the Mg phase, with the Mg-La alloy forming more easily when the Mg source in the melt is depleted.
研究领域:
电化学
·
材料科学
·
熔盐化学
·
计算材料学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Wen-jie Li,Wen-Hao Gu,Jun Guo,Yi-Xin Zhang,Jing Feng,Quan Shan,Zhen-Hua Ge
Both single crystal and polycrystalline SnSe have been widely investigated due to their superior thermoelectric properties in the medium temperature range. Due to its poor mechanical properties and complex and time-consuming synthesis process, single crystal SnSe is difficult to apply commercially. In this work, n-type polycrystalline SnSe with high thermoelectric properties was fabricated by LaCl 3 doping via the melting method combined with the spark plasma sintering (SPS) technique. Surprisingly, it was found that the different doping processes affect the electrical behavior of LaCl 3 -doped polycrystalline SnSe. The sample of LaCl 3 -doped SnSe was p-type when ball milling and the SPS technique were employed in our previous work, and the sample was n-type when the melting method and SPS were employed in this work. The doping mechanism was investigated in detail in this work.
✓ 已验证
DOI
高影响因子
TRANSITION METAL CHEMISTRY
·
2023
·Vol. 48
·期 2
·125-133
·
IF 1.7
Hu Yi,Xu Jingsong,Zhang Tianzhu,Zhong Hang,Chen Jun,Liu Xinai,Pan Qifa,Liu Ruidong,Jiang Chunli,Chen Jun
Electrocatalytic water splitting to produce hydrogen is a promising route to provide green hydrogen on a large scale. To explore non-noble metal electrocatalysts with high performance is still a challenge. Herein, a one-step electrodeposition way is developed to construct the heterostructural (NiO-La 2 O 3 )/(Ni-La)/NiO/Ni electrocatalysts on Ni foam. The dark Ni-La coating was prepared by co-electrodeposition from an aqueous solution containing LaCl 3 and NiCl 2 with a molar concentration ratio of 1:5. Among these heterostructural Ni-based electrocatalysts, an excellent HER activity is achieved: an overpotential of 22 mV at the current density of 10 mA cm −2 in 1 M KOH solution. It is demonstrated that the introduction of La significantly reduces the overpotential for HER. The higher the La content in the Ni-La coating of these electrocatalysts, the better the electrocatalytic HER performance was exhibited. This work provides a facile and inexpensive route to prepare Ni-La coating on electrodes in an aqueous solution.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Changzu Zhu,Tao Jiang,Shilin Jiang,Xinyu Zhang,Ming Cheng,Wentao Zhou,Wei-qun Shi,Yafei Wang
Electrochemical separation of spent fuel utilizing molten salt as a medium is an efficient approach to achieve the sustainable development of nuclear energy. The Lewis acidity and basicity of molten salts are closely related to the local structure of the molten salt and significantly influence its properties. In this study, the acidity–basicity scales of LiCl–KCl–CsCl–LaCl3 molten salts have been quantitatively determined using in situ UV–vis spectrophotometry with Tl+ probes, and the relationship between the acidity–basicity scale and temperature was deduced. The influence of molten salt’s acidity–basicity scale on its structural evolution was investigated through Deep Potential Molecular Dynamics (DPMD) simulations and in situ Raman spectroscopy. As the acidity–basicity scale of molten salt increases, the short-range ordering of the melt diminishes, and the intermediate-range ordering enhances. Moreover, based on the accumulation of data at various temperatures, the relationships between the temperature-dependent acidity–basicity scale and the thermal transport properties were derived. The reduction potential of La was analyzed through electrochemical tests to evaluate the corrosiveness of the salt melt, and it was found that molten salt with a higher acidity–basicity scale exhibited greater corrosivity. This study elucidates the correlation of the acidity–basicity scale with salt structure and properties, providing an effective method for comprehensive assessment and real-time monitoring of salt structure and properties through the direct measurement of the salt acidity–basicity scale.
研究领域:
核能化学
·
材料科学
·
电化学
✓ 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）