INDUSTRIAL CROPS AND PRODUCTS
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2022
·
IF 6.449
Jiang-Meng Yuan,Ke Wang,Ting-Ting Su,Bing-Yu Chi,Wen-Feng Ren,Run-Cang Sun
Lithium (Li) metal batteries are deemed to an outstanding candidate of next-generation energy storage instruments due to their low electrochemical potential as well as high theoretical capacity. Nonetheless, the uncontrolled dendrite growth of Li and side reaction occurrence of Li metal anodes hamper their application. In this work, we fabricated an organic corncob lignin /inorganic lithium nitride composite layer by a facile in-situ coating method. For one thing, the organic corncob lignin layer can avoid direct contaction of Li with electrolyte, reduce the occurrence of undesirable reactions, and enhance the stability of electrode/electrolyte interface. For another, the component of inorganic lithium nitride in the composite layer can facilitate the ion transportation between electrolyte and Li metal anodes, increase mechanical properties of the film, decrease the nucleation overpotential, and eventually suppress the growth of Li dendrite. The Li metal anodes with composite protective layers exhibit good cycling property of 2000 h at 1.5 mA cm −2 with 1.5 mAh cm -2 . The Li-S full batteries assembled with Li metal anodes coated by composite protective layers show good cycling performance of 513.7 mAh g -1 after 300 cycles in contrast to bare Li. This study provides a simple coating method to fabricate artificial solid electrolyte interphase layer and promotes to realizing stable and safe Li-metal batteries and recycling the lignin from industrial waste.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xiangxiang Fu,Huanhuan Duan,Shiwei Zhang,Ran Bi,Yuanfu Deng,Guohua Chen
Lithium (Li) metal is considered as one of the attractive anodes for next-generation high-energy-density batteries due to its ultrahigh theoretical specific capacity and low potential. However, many great challenges including uncontrolled dendrite growth and undesired side reactions during repeated cycling still seriously hinder its practical application in Li metal secondary batteries. Herein, we report the hexachloro-1,3-butadiene (HCBD) molecule as a functional additive to stabilize the Li anode by forming a stable solid electrolyte interface (SEI) layer with high Li ion conductivity via in situ surface and electrochemical reactions. Density functional theory calculations demonstrate that HCBD can preferentially react with the Li anode, which generates an ionic conducting species (LiCl) into an SEI layer. The LiCl-rich SEI layer effectively regulates Li+ deposition/stripping kinetics and then induces uniform nucleation of Li+ and reduces the side reactions between the Li anode and electrolyte. With an optimal amount of HCBD in an ether-based electrolyte, an excellent cycling lifespan (7000 h) was achieved with a low hysteresis voltage of ∼10 mV at 1.0 mA cm–2 in a Li||Li symmetrical cell. Furthermore, the LiFePO4-based cell with the additive-functionalized Li anode displays obviously improved cycling stability (with a high specific capacity of 141.1 mAh g–1 after 350 cycles at 1 C).
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xian Zhang,Yuhang Yang,Simin Xia,Zhengru Huang,Jiage Yu,Yuqiang Pi,Feng Wang,Yu Ding
Si possesses a high theoretical specific capacity as anode material for Li-ion batteries. However, it has poor electrical conductivity and severe volume effect during charge-discharge processes, resulting in substantial internal resistance and significantly reduced available capacity. These issues can be greatly mitigated by encapsulating Si nanoparticles within a carbonous material. Hence, network precursors are synthesised herein to encapsulate Si nanoparticles by in situ polymerisation of acrylic acid and melamine. After freeze-drying, the precursors are pyrolysed under Ar atmosphere to obtain homogeneous N-rich porous Si@SiO x /NC composites. A fibrous network structure is acquired by using appropriate amounts of polyacrylic acid and Si. Such a structure provides an outstanding electron transmission network and effectively buffers the volume change of Si to maintain a stable electrode structure. The results show that when the content of Si nanoparticles in the composite is 35.2 wt%, the prepared Si@SiO x /NC−2 composite has abundant micropores (267.90 m 2 g −1 ) and mesopores (17.48 m 2 g −1 ). The material shows an initial discharge-specific capacity of 1833.6 mAh g −1 and Coulombic efficiency of 65%. After 150 cycles at 0.1 A g −1 , the discharge-specific capacity is still as high as 922.8 mAh g −1 . The excellent electrochemical performance of the Si@SiO x /NC composites is due to the three-dimensional conductive structure. The unique construction could play an important role in expanding the commercial application of Si-based anode materials in Li-ion batteries.
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Materials Today Energy
·
2023
·
IF 9.3
Jian Wang,Yifan Liu,Guilu Qin,BaoShan Wu,Zongkai Yan,Nasir Mahmood,Xian Jian,Huakun Liu
The low intrinsic conductivity of carbon monofluoride (CF x ) extremely limits the high-power application of lithium/carbon monofluoride (Li/CF x ) primary batteries. Herein, silver nanowires were grown in situ on the surface of CF x material by an aldehyde reduction method in polyhydric alcohol. The interface interaction between silver nanowires (Ag NWs) and the surface of CF x material was studied. Ag NWs@CF x hybrids modulate the electronic structure of CF x and enhance the electrochemical activity of C–F bonds, thus increasing the availability of F atoms to participate in the discharge reaction. The electrochemical performance results show that the voltage platform, specific capacity, and energy density of the Li/CF x batteries were enhanced with a certain concentration of Ag NWs on the CF x surface. The 10% Ag NWs@CF x sample achieved a power density of 10376.09 W/kg and an energy density of 840 Wh/Kg at a discharge rate of 8C, which is significantly better than the pristine CF x . The performance of Li/CF x batteries is improved by building an Ag conductivity chain and enhancing the electrochemical activity of C–F bonds through a simple hydrothermal method , which effectively expands the application prospects of Li/CF x batteries in the field of high-power devices.
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高影响因子
Frontiers in Pharmacology
·
2023
·
IF 5.6
Li Jingyan,Wu Bingmin,Zeng Lishan,Lin Ying,Chen Qiuhe,Wang Haixia,An Lin,Zhang Jiajun,Chen Siyan,Huang Junying,Zhan Ruoting,Zhang Guifang
Background: The present study aimed to investigate the protective effect of the water extract of Amydrium sinense (Engl.) H. Li (ASWE) against hepatic fibrosis (HF) and clarify the underlying mechanism.Methods: The chemical components of ASWE were analysed by a Q-Orbitrap high-resolution mass spectrometer. In our study, an in vivo hepatic fibrosis mouse model was established via an intraperitoneal injection of olive oil containing 20% CCl4. In vitro experiments were conducted using a hepatic stellate cell line (HSC-T6) and RAW 264.7 cell line. A CCK-8 assay was performed to assess the cell viability of HSC-T6 and RAW264.7 cells treated with ASWE. Immunofluorescence staining was used to examine the intracellular localization of signal transducer and activator of transcription 3 (Stat3). Stat3 was overexpressed to analyse the role of Stat3 in the effect of ASWE on HF.Results: Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses showed that candidate targets of ASWE, associated with protective effects against hepatic fibrosis, were related to inflammation response. ASWE ameliorated CCl4-induced liver pathological damage and reduced the liver index and alanine transaminase (ALT) and aspartate transaminase (AST) levels. ASWE also decreased the serum levels of collagen Ⅰ (Col Ⅰ) and hydroxyproline (Hyp) in CCl4-treated mice. In addition, the expression of fibrosis markers, including α-SMA protein and Acta2, Col1a1, and Col3a1 mRNA, was downregulated by ASWE treatment in vivo. The expression of these fibrosis markers was also decreased by treatment with ASWE in HSC-T6 cells. Moreover, ASWE decreased the expression of inflammatory markers, including the Tnf-α, Il6 and Il1β, in RAW264.7 cells. ASWE decreased the phosphorylation of Stat3 and total Stat3 expression and reduced the mRNA expression of the Stat3 gene in vivo and in vitro. ASWE also inhibited the nuclear shuttling of Stat3. Overexpression of Stat3 weakened the therapeutic effect of ASWE and accelerated the progression of HF.Conclusion: The results show that ASWE protects against CCl4-induced liver injury by suppressing fibrosis, inflammation, HSC activation and the Stat3 signaling pathway, which might lead to a new approach for preventing HF.
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ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Wenke Liu,Qingwei Qin,Hailin Zhang,Xing Chen,Ling Luo,Guangqiang Li,Shili Zheng,Ping Li
The conventional neutralization method for removing impurities Fe(III) and Al(III) from spent Li-ion battery (LIB) leaching solutions has encountered problems of low impurity removal efficiency or high loss of valuable metals. In this study, highly selective and effective separation of Fe(III) and Al(III) from spent LIB leaching solutions was achieved by the precipitation–complexation technology. It was found that almost all Fe(III) together with most of the Al(III) could be removed by preferential precipitation using NaHCO3 neutralization under an equilibrium pH of 3.3 at 95 °C. Phytic acid, as a selectively complexing agent, was then introduced to completely remove the residual Al(III) from Fe-removed solutions with an Al/PA molar ratio of 3:1 at 60 °C. As a result, more than 99.5% Fe(III) and 97.08% Al(III) could be removed from the actual solutions, with a total loss of Ni, Co, Mn, and Li of only 1.1%. Furthermore, the obtained Al-phytates could be decomposed to form Al(PO3)3 products at 1000 °C. The whole process not only realized the efficient removal of Al(III) and Fe(III) at low pH with minimal loss of Ni, Co, Mn, and Li but also reduced the emission of wastes and utilized the Al resources.
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IONICS
·
2022
·Vol. 29
·期 1
·183-191
·
IF 2.961
Wang Yang,Liang Xin,Wu Xiaolong,Wang Lulu,Xu Kun,Sun Yi,Wang Jiazhao,Xiang Hongfa
Li–S batteries have been
considered as the most desirable candidate for next-generation batteries because of their high energy density and low cost, although the problems of the insulating nature of S and Li 2 S and the “shuttle effect” of polysulfides in Li–S batteries have to be addressed. In this work, we propose NaCl templates and a solid–liquid coexistence strategy to synthesize an N-doped carbon matrix with interconnected micro-mesoporous structure. Benefiting from the critical state of solid–liquid coexistence at the melting point of NaCl and a pretreatment by pressure, a unique porous structure with an interconnected network of micropores and mesopores is obtained. The micropores can prevent the dissolution of polysulfides, the mesopores can increase the S loading, and the interconnected pore network can significantly improve the usage of active materials. As a result, the cathode with the N-doped carbon matrix shows improved electrochemical performances.
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SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Xiaojian Liao,Maoyou Ye,Jialin Liang,Zhijie Guan,Shoupeng Li,Yanghong Deng,Qiaowei Gan,Zihang Liu,Xiaodi Fang,Shuiyu Sun
The recovery of metals from spent LiCoO 2 batteries (SLBs) is essential to avoid resource wastage and the production of hazardous waste . However, the major challenge in regard to recovering metals from SLBs using traditional bioleaching is the low Co yield. To overcome this issue, a mixed culture of Acidithiobacillus caldus and Sulfobacillus thermosulfidooxidans was designed for use in SLBs leaching in this study. With the assistance of Fe 2+ as a reductant, 99% of Co and 100% of Li were leached using the above mixed-culture bioleaching (MCB) process, thus solving the problem of low metal leaching efficiency from SLBs. Analysis of the underlying mechanism revealed that the effective extraction of metals from SLBs by the Fe 2+ -MCB process relied on Fe 2+ -releasing electrons to reduce refractory Co(III) to Co(II) that can be easily bioleached. Finally, the hazardous SLBs was transformed into a non-toxic material after treatment utilizing the Fe 2+ -MCB process. However, effective SLBs leaching was not achieved by the addition of Fe 0 to the MCB system. Only 25% Co and 31% Li yields were obtained, as the addition of Fe 0 caused acid consumption and bacterial apoptosis. Overall, this study revealed that reductants that cause acid consumption and harm bacteria should be ruled out for use in reductant-assisted bioleaching processes for extracting metals from SLBs.
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CHEMOSPHERE
·
2022
·
IF 8.943
Xueyan Liu,Minshu Cui,Kangping Cui,Yan Ding,Xing Chen,Changbin Chen,Xianbao Nie
As an emerging peroxymonosulfate (PMS) activation catalyst, graphitic carbon nitride (g-C 3 N 4 ) is non-toxic and eco-friendly, while its poor catalytic performance hinders the application of pristine g-C 3 N 4 . Herein, a simple LiCl/KCl molten salts-assisted thermal polymerization method was adopted to promote the photocatalytic performance of g-C 3 N 4 . With the insertion of Li/K dopants and the introduction of surface cyano defects, the modified catalyst exhibited greatly enhanced ability on PMS activation towards acetaminophen removal, observing a 13 times higher rate constant than pristine g-C 3 N 4 (k = 0.0435 min −1 vs. 0.0033 min −1 ). The main reactive oxygen species for pollutant degradation were identified as sulfate radicals and singlet oxygen. The wavefunction analysis at excited states based on density functional theory suggests that the introduction of cyano defects greatly promotes the separation of photo-generated electron-hole pairs, thereby achieving higher photocatalytic efficiency. In addition, the doping of Li/K significantly enhances the interaction between PMS and the catalyst surface, and orients the electron transfer from PMS to catalyst to generate non-radical species singlet oxygen, which improves the catalyst resistance to anions-containing water matrices.
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JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Yutang Zhou,Yong Jin,Yichao Shen,Liangjie Shi,Long Bai,Rong Zhou
Achieving wide variation ranges and various adjusting modes of the performances for surfactant mixtures is still a significant challenge which limits the extensive application of surfactant mixtures. Herein, we reported the physicochemical properties and performances of hydrocarbon/fluorocarbon surfactant mixtures constituted with an anionic hydrocarbon surfactant, sodium dodecyl sulfate (SDS), and a tri-block nonionic short-chain fluorocarbon surfactant (F 9 EG 13 F 9 ). Meanwhile, the effects of Li + and Mg 2+ on them were investigated. The surface tension and contact angle measurements were adopted to reflect the surface activity and wetting ability of SDS/F 9 EG 13 F 9 mixtures. The data showed that the surface tensions at the critical micelle concentrations and the contact angles on polytetrafluoroethylene film of these surfactant mixtures are 33.5–21.4 mN/m and 118.0–58.7°, respectively, which indicates that their surface activity and wetting ability possess wide variation ranges. Furthermore, the micellization, adsorption and thermodynamics behaviors of mixed surfactants were also analyzed using a series of theoretical parameters based on the regular solution theory, Clint’s model, Maeda’s model, etc. The results approved that Li + and Mg 2+ immensely reduce the electrostatic repulsion effect of SDS and increase the adsorption of SDS at phase interfaces to enhance mixed monolayer packing, in which the effect of Mg 2+ is stronger than that of Li + . Thus, precisely adjustable surface activity and wetting ability can be realized by changing the molar ratio and adding the different cations, which enables SDS/F 9 EG 13 F 9 mixtures to possess tunable performances to meet various practical application requirements.
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Advanced Materials Interfaces
·
2022
·Vol. 9
·期 9
·2102474
·
IF 6.389
Yu Dong,Yueheng Qi,Wenqing Zhao,Shaohui Yuan,Zihao Zeng,Yue Yang,Wei Sun,Peng Ge
As potential candidates, metal sulfides display strong storage abilities but suffer from serious volume swelling and polysulfide shuttling. Especially rich-sulfur materials, inferior reversible conversion reactions (from MS 2 to MS with S) can bring about major formation of sulfur. Herein, cubic-like Sn–Co–S materials with SnO 2 as catalyst are designed with various dimensional carbon. The as-resulted samples display uniform distributed particle size (≈5 µm), while cross-linked Sn–Co–S@carbon is successfully formed due to its rich surficial groups. Significantly, the formation of chemical bonds about Sn/Co–S–C is noted, facilitating ions/e-transfering and architecture enhancing. Meanwhile, owing to the endothermic effect of carbon, SnO 2 finally resulted, effectively limiting the so-called “shuttling effect” of polysulfide. Utilized as sodium-ion anodes, the optimized samples can deliver a capacity of 490 mAh g −1 at 0.5 A g −1 and ≈400 mAh g −1 above at 5.0 A g −1 . Assisted by the detailed kinetic analysis, it can be confirmed that the improvements of surface-controlling behaviors mainly come from the interfacial chemical bonds and strong-polar metal-oxides bonds. This work is expected to illustrate the roles of interfacial design and metal oxide catalysts for advanced energy storage materials.
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Carbon Energy
·
2023
·
IF 20.5
Feiyang Yang,Ying Yao,Yunkai Xu,Cong Wang,Meiling Wang,Jingjie Ren,Cunzhong Zhang,Feng Wu,Jun Lu
Although biomass-derived carbon (biochar) has been widely used in the energy field, the relation between the carbonization condition and the physical/chemical property of the product remains elusive. Here, we revealed the carbonization condition's effect on the morphology, surface property, and electrochemical performance of the obtained carbon. An open slit pore structure with shower-puff-like nanoparticles can be obtained by finely tuning the carbonization temperature, and its unique pore structure and surface properties enable the Li–O 2 battery with cycling longevity (221 cycles with 99.8% Coulombic efficiency at 0.2 mA cm −2 and controlled discharge–charge depths of 500 mAh g −1 ) and high capacity (16,334 mAh g −1 at 0.02 mA cm −2 ). This work provides a greater understanding of the mechanism of the biochar carbonization procedure under various pyrolysis conditions, paving the way for future study of energy storage devices.
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