Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yan Zhou,Cheng Yi,Xiaohui Ning
Liquid metal batteries (LMBs) are emerging as a promising energy storage solution owing to their inherent safety, low cost, and long lifespan. Bismuth (Bi) offers excellent cycle stability but is hindered by sluggish electrode kinetics due to the formation of compact and poorly conductive intermetallics at high rates. Here, we construct an electronically networked architecture to overcome this limitation by incorporating little copper (Cu) into a Bi electrode. This innovative design enhances electrical conductivity and reduces the ion diffusion energy barrier, affording dramatically improved electrochemical performance. Our Li‖Bi96Cu4 cell demonstrates superior high-rate capability, delivering 85.50% of the theoretical capacity at 3C, a substantial improvement compared to 57.50% of the Li‖Bi cell. Furthermore, it exhibits unprecedented cyclability without noticeable capacity degradation over 4000 cycles, a performance unparalleled by other reported LMB chemistries. This facile and effective Cu doping modification provides a transformative approach to enhance Bi electrode kinetics, offering a new paradigm for advanced electrode design for LMBs.
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ELECTROANALYSIS
·
2026
·Vol. 38
·期 1
·e70099
·
IF 2.3
Yang Chen,Xuening Wang,Huimin Si,Zhiping Sun,Qianyun Yu,Xihong Song,Ying Liu,Chuanbo Yan,Kai Yu
The increasing heavy metal pollution in marine environments has highlighted the urgent need for rapid, on-site detection methods. In this study, a reduced graphene oxide (rGO) and carboxylated multiwalled carbon nanotube (MWCNTs-COOH)-modified screen-printed electrode (SPE) was coupled with a portable electrochemical workstation for on-site detection of Pb 2+ and Cd 2+ in seawater. The key influencing factors involved in the detection process, such as deposition potential, deposition time, and pH value, have been systematically optimized. The response surface methodology (RSM) was applied to refine the portable electrochemical workstation parameters, including step potential, frequency, and pulse amplitude. The detection capability for heavy metals was significantly enhanced by using square wave stripping voltammetry (SWASV) with in situ Hg-Bi film plating, achieving detection limits of 0.4 μg/L for Pb 2+ and 0.8 μg/L for Cd 2+ . Finally, the portable workstation together with rGO/MWCNTs-COOH/SPE showed recovery rates of 101.33 ± 3.42% ~ 115.85 ± 3.50% for Pb 2+ and 101.32 ± 2.23% ~ 102.00 ± 2.00% for Cd 2+ in real seawater. The results were in good agreement with those obtained by inductively coupled plasma mass spectrometry (ICP-MS), thereby validating the detection accuracy of this platform.
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ADVANCED MATERIALS
·
2026
·
IF 26.8
Zexiang He,Depeng Wang,Wentao Fan,Songlin Liu,Antonio Gaetano Ricciardulli,Haixia Zhong,Yiyong Mai,Paolo Samorì,Sheng Yang
2D bismuth possesses a unique combination of properties, such as cryogenic-free quantum spin Hall effects and intrinsic single-element ferroelectricity, making it highly promising for next-generation electronic devices. However, the synthesis of 2D bismuth via exfoliation or direct growth is hindered by the low structural anisotropy of bulk bismuth crystals. To address this challenge, we demonstrate an unprecedented ice-confined bottom-up strategy for growing 2D bismuth. This approach involves kinetically controlled nucleation in liquid nitrogen (-196 °C), followed by redox-driven anisotropic growth within the confined space between ice and aluminum surfaces at −20 °C. The surfactant-free process yields solution-processable crystalline 2D bismuth with micrometer-scale lateral dimensions and atomic-level thickness, where 72% of the sheets are 1–3 layers thick. Thanks to its oxophilic surfaces, the as-grown 2D bismuth effectively captures CO 2 molecules and facilitates their conversion to *OCHO intermediates during electrochemical CO 2 reduction, leading to an excellent formate Faraday efficiency of 95.6%. Moreover, this versatile synthetic route can be extended to other functional 2D metals, including silver, copper, and tellurium, thereby opening new avenues for the design of advanced catalysis, electronics, and related technologies.
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Small
·
2022
·Vol. 18
·期 44
·2203976
·
IF 15.153
Anding Xu,Qi Zhu,Guilan Li,Caihong Gong,Xue Li,Huaming Chen,Jie Cui,Songping Wu,Zhiguang Xu,Yurong Yan
Metallic Bi, as an alloying-type anode material, has demonstrated tremendous potential for practical application of potassium-ion batteries. However, the giant volume expansion, severe structure pulverization, and sluggish dynamics of Bi-based materials result in unsatisfied rate performance and unstable cycling stability. Here, 2D bismuth@N-doped carbon sheets with Bi O C bond and internal void space (2D Bi@NOC) are successfully fabricated via a self-template strategy to address these issues, which own ultrafast electrochemical kinetics and impressive long-term cycling stability for delivering an admirable capacity of 341.7 mAh g −1 after 1000 cycles at 10 A g −1 and impressive rate capability of 220.6 mAh g −1 at 50 A g −1 . Particularly, the in situ transmission electron microscopy observations visualize the real-time alloying/dealloying process and reveal that plastic carbon shell and void space can availably relieve dramatic volume stress and powerfully maintain structural integrity. Density functional theory calculation and ultraviolet photoelectron spectroscopy test certify that the robust Bi O C bond is thermodynamically and kinetically beneficial for adsorption/diffusion of K + . This work will light on designing advanced high-performance energy materials and provide important evidence for understanding the energy storage mechanism of alloy-based materials.
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DYES AND PIGMENTS
·
2022
·
IF 5.122
Yujiao Tu,Ze Liu,Lei Jiang,Yingying Xiang,Fei Song,Lifen Meng,Xiuling Ji,Lin Yuan
New coccine is one of the most used red colorants in foods. Due to its cytotoxicity, quantitative determination is very necessary. Herein, the ratiometric fluorescent and UV absorption dual-mode nanosensor , derived from fangchinoline and o-phenylenediamine, was successfully prepared by hydrothermal way. The prepared carbon dots with three colors were purified with dialysis, thin layer chromatography and chromatographic column. Highly green fluorescence of Fan,N-CDs was quenched by new coccine with inner filter effect. The dependence of the ratiometric fluorescent response on new coccine concentrations was found linear over the range of 0–12.5 μM and 20–55 μM with LOD of 30.12 nM and 54.85 nm, respectively. The linearity of UV absorption ranged from 0 to 45 μM with of LOD 1.98 nM. In addition, the nanosensor was used to determine new coccine in energy drinks, carbonated beverage, gum and ketchup. It provides a new insight on the detection of new coccine by the dual-mode nanosensor.
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JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Wenjin Ding,Qing Gong,Shengzhi Liang,Ralf Hoffmann,Hao Zhou,Haomiao Li,Kangli Wang,Tianru Zhang,Alfons Weisenburger,Georg Müller,Alexander Bonk
Multi-cationic molten chloride salt mixtures such as LiCl–KCl–NaCl are promising molten salt electrolytes for sodium liquid metal batteries (Na-LMBs). In this work, the melting temperature of LiCl–KCl–NaCl was determined with Differential Scanning Calorimetry (DSC), assisted by FactSage™ simulation and confirmed by a melting point apparatus OptiMelt™. It is founded that the eutectic LiCl–KCl–NaCl can be considered as a pseudo-binary system with LiCl–KCl eutectic (59.2–40.8 mol.%) as the solvent and NaCl as the solute. When NaCl is not more than 9 mol.%, the eutectic LiCl–KCl–NaCl salt mixture has a melting temperature of ∼350 °C as that of LiCl–KCl eutectic. In addition, the exchange reactions between anode Na metal with LiCl–KCl–NaCl molten salt electrolyte were studied at the temperature of 400–500 °C quantitatively. The equilibrium constants of the exchange reactions were determined by chemical analysis on the salt and metal phases with Ion Chromatography (IC). A one ampere-hour (Ah) Na-LMB test cell shows promising energy storage performance. Moreover, the phenomena in the cell test can be explained convincingly, combining the results of exchange reactions and the pseudo-binary-system theory. The findings on the multi-cationic molten salt electrolytes for Na-LMBs in this work could support further development of other liquid metal batteries.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Lvji Yan,Haoyu Deng,Sikpaam Issaka Alhassan,Haiying Gang,Bichao Wu,Dun Wei,Yiyun Cao,Peng Chen,Haiying Wang
Bismuth-based materials as an efficient Cl - storage electrode in capacitive deionization (CDI) technology possess a high affinity for chloride ions. However, their performance is significantly limited owing to the frequent volume expansion of bismuth (Bi) nanoparticles during the electro-sorption process. Herein, a facile synthesis strategy of a self-coated bismuth-carbon composite (BiAC@C) was fabricated through one-step carbonization of commercial bismuth acetate. The yolk-shell nanostructure-like BiAC@C uniformly sandwiched the Bi nanoparticles in the porous carbon framework, which not only provided a reinforcing “carbon skeleton” for constraining Bi nanoparticles in spatial, but also facilitated the ions diffusion and better electronic conductivity, supplying an superior Cl - removal with enhanced ability for water desalination . Results show that a superior Cl - removal capacity of the synthesized BiAC@C composite electrodes was ∼109.63 mg g −1 at 20 mA g −1 , substantially higher than that of the most Cl - capturing electrodes recently reported. Moreover, such a capacity could keep a durability that still retains 80.53 % of its initial capacity after 50 continuous treatment cycles under current density of 30 mA g −1 , and it is much higher than 29.11 % of the pure Bi electrode. It is expected that the prepared BiAC@C composite could be a promising alternative material for the extraction of Cl - from wastewater.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Abubakar Yakubu Haruna,Yubo Luo,Wang Li,Zheng Ma,Tian Xu,Qinghui Jiang,Junyou Yang
Bismuth telluride-based (Bi2Te3) alloys have long been considered the best thermoelectric (TE) materials at room temperature. However, the n-type Bi2Te3 alloys always exhibit poor thermoelectric performance than their p-type counterpart, which severely limits the energy conversion efficiency of thermoelectric devices. Here, we demonstrate that incorporating AgBiSe2 can concurrently regulate the electrical and thermal transport properties as well as improve the mechanical performance of n-type Bi2Te2.69Se0.33Cl0.03 for high thermoelectric performance. Among these, AgBiSe2 effectively enhanced the Seebeck coefficients of n-type Bi2Te2.69Se0.33Cl0.03 due to the reduced carrier concentration and reduced the thermal conductivity of n-type Bi2Te2.69Se0.33Cl0.03 owing to the enhanced phonon scattering by AgBiSe2 as well as its low thermal conductivity nature. Consequently, the simultaneous optimization of electrical and thermal transport properties enables us to achieve a maximum ZT of ∼1.21 (at ∼353 K) and an average ZTave of ∼1.07 (300–433 K) for 3.5 wt % AgBiSe2-incorporated Bi2Te2.69Se0.33Cl0.03, which are ∼25.62 and ∼23.36% larger than those of Bi2Te2.69Se0.33Cl0.03, respectively. This work proves that the incorporation of AgBiSe2 is an efficient way to improve the thermoelectric performance of bismuth telluride-based materials.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·1-8
·
IF 2.8
Xue Lisha,Wang Yuan,Zhu Shuangmei,Mao Qianhui,Jia Xiaopeng,Zhang Yuewen
We have synthesized the quaternary copper selenide Bi x Cu 2−3 x Se 0.95 Te 0.05 compounds by high-pressure followed with ball milling method and investigated their thermoelectric properties. The crystal structure and element doping are characterized and verified by the X-ray diffraction, high-resolution transmission electron microscope and X-ray photoelectron spectroscopy. Compared with other samples, the samples with x = 0.001 and 0.002 have larger layered grain size and smaller grain boundary. This may lead to the reduction of resistivity in a wide temperature range, thus realizing the optimization of electronic characteristics. The dislocation-induced lattice strain fluctuations may cause the abrupt thermal conductivity, which is contrary to the previous results. Eventually, a peak value of zT = 1.03 at 873 K is obtained for Bi 0.001 Cu 1.997 Se 0.95 Te 0.05 and Bi 0.002 Cu 1.994 Se 0.95 Te 0.05 .
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Journal of Physical Chemistry C
·
2022
·
IF 4.177
Yuyao Zhang,Yu Tian,Wen Chen,Min Zhou,Siyong Ou,Yueli Liu
The CO2 photoreduction process is becoming a promising strategy to solve the energy shortage problem and global warming in recent years. How to promote the separation of photoinduced carriers has attracted attention for the improvement of photocatalytic CO2 reduction. In the present work, an S-scheme heterojunction of Bismuthene/CsPbBr3 quantum dots (Bismuthene/CsPbBr3 QDs) is constructed as the photocatalyst for CO2 conversion. As a result, Bismuthene/CsPbBr3 QDs exhibit an optimal CH4 evolution rate of 43.1 μmol h–1 g–1 with 84.53% selectivity over CH4 under ultraviolet–vis light (UV–vis) irradiation. Construction of the S-scheme heterojunction with a narrow band gap semiconductor is the main factor for improving the photocatalytic performance, as the S-scheme heterojunction can suppress the recombination of photoinduced carriers and retain redox ability. The narrow band gap semiconductor Bismuthene can enhance light absorption abilities. This work probably provides some insights for the designing of heterojunction photocatalysts and the improvement of photocatalytic performance.
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Analytical Methods
·
2022
·Vol. 14
·期 41
·4127-4132
·
IF 3.532
Lei Jiang,Lin Yuan,Ze Liu,Yingying Xiang,Fei Song,Lifen Meng,Yujiao Tu
Colorant tartrazine is widely used in the food industry, but its long-term and excessive consumption is harmful to human health. Therefore, it is necessary to establish a sensitive detection method for tartrazine. Blue fluorescent carbon dots with L-arginine and o-phenylenediamine as precursors, namely L-Arg/oPD-CDs, were prepared via the hydrothermal method. Then, L-Arg/oPD-CDs were further purified by dialysis, thin layer chromatography and column chromatography. A dual-mode nanosensor based on fluorescent and UV absorption was successfully developed. Excellent linear ranges of 0–5 μM and 10–50 μM were obtained with a low detection limit of 42.3 nM based on fluorescence. A good linear range of 0–50 μM was obtained with a low detection limit of 130.15 nM based on UV absorption. The quenching mechanism of tartrazine towards L-Arg/oPD-CDs fluorescence was the inner filter effect. In addition, a dual-mode nanosensor was used for tartrazine determination in millet, maize flour, carbonated drink, and sugar samples. This study provides new insight into the detection of tartrazine by applying a dual-mode nanosensor.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Xinyu Hu,Juntao Wang,Jing Wang,Yao Deng,Huidi Zhang,Tao Xu,Wenlei Wang
In this work, a high-energy β electron beam was applied to promote the generation and directional inward migration of surface oxygen defects. The valence band potential changed to a high potential due to the transfer of surface oxygen vacancies on BiVO 4 /Bi 2 O 3−x . Interface oxygen vacancies have significant advantages in inducing the formation of oxygen vacancy levels and reducing the band gap energy. Surface oxygen vacancy and vacancy levels can prevent the recombination of photogenerated carriers. The electrons enriched in the surface oxygen vacancies can remarkably activate PMS with O−O bonds to degrade ciprofloxacin (CIP). The degradation kinetic constant and CIP mineralization rate of BiVO 4 /Bi 2 O 3−x -450/PMS were 2.09 and 1.51 times higher than those of BiVO 4 /Bi 2 O 3−x /PMS, respectively. BiVO 4 /Bi 2 O 3−x -450 with a lower relative content of surface oxygen vacancies (24.70%) exhibited a stronger activation ability. Obviously, the change of band structure caused by interface oxygen vacancies is the reason for increasing photoactivation efficiency of PMS.
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