Biomass Conversion and Biorefinery
·
2022
·
IF 4.05
Liu Qian,Zhong Wenqi,Yu Zuowei,Zhou Jun
Recent advances in torrefaction pretreatment technologies have the potential to improve biomass storage, transportation, and combustion. Torrefaction pretreatment, on the other hand, does not address the issue of high alkali metal content in biomass, which can easily lead to ash deposition, slagging, and corrosion on the boiler heating surface. NH 4 H 2 PO 4 , Ca 3 (PO 4 ) 2 , diatomite (primarily SiO 2 ), and calcined kaolin (Al 2 O 3 ·2SiO 2 ) were added to torrefied wheat straw to control the release and transformation of potassium in the process of biomass combustion, and the effects of additives on K precipitation and migration were explored. The results demonstrated that all four additives might limit the release of K from torrefied wheat straw during combustion. Phosphoric acid additives had a better effect than silicon-aluminum additives, with the best result being Ca 3 (PO 4 ) 2 , followed by calcined kaolin. The amount of phosphoric acid additives should be controlled at 10wt%, and the amount of silicon aluminum additives should be maintained at 5wt%, based on the economy and retention impact of K. XRD and chemical fractionation analysis revealed that phosphoric acid additives primarily control the K transformation by forming K–Ca–P salt and ammonium acetate state K, silica-aluminum additives primarily control it by forming K silicates and aluminosilicates, and diatomite also improved the retention of water-soluble K through physical adsorption. Graphical abstract
研究领域:
能源植物学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Boyang Zhang,Xiaola Li,Ziyang Liang,Wenzhao Huang,Yuqing Liu,Chenyu Liu,Zhan Lin,Dong Luo
Lithium-rich manganese-based oxides (LMOs) are regarded as promising cathodes for next-generation high-energy Li-ion batteries due to their ultrahigh discharge capacity (>250 mAh/g) and low cost. However, their practical application is significantly hindered by issues such as transition metal dissolution and structural evolution under high working voltage. In this study, a stable SEI protective film based on carbon phosphorus is successfully constructed by introducing two solid–liquid interface-stabilizing additives, ethylene carbonate (VC) and tri(pentafluorophenyl)borane (TPFPB), into the base electrolyte. This significantly enhances the interface stability between the lithium-rich manganese-based cathode material and the electrolyte, suppresses the generation of harmful HF and the dissolution of transition metals, thereby improving the overall stability of the electrode–electrolyte system. Experimental results indicate that after 200 cycles, the capacity retention of the LMO cathode is increased by 21% due to the significant suppression of nanopore formation and phase transitions. This additive optimization strategy provides promising technical guidance for the application of lithium-rich manganese-based oxide cathode materials in next-generation high-energy-density rechargeable batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Jiatao Xiang,Zhen Zhang,Luning Tian,Qinghua Zhao,Haiping Yang,Xiong Zhang,Jingai Shao,Shihong Zhang,Hanping Chen
In order to enhance wet flue gas desulfurization efficiency and reduce cost, the effects of different series of additives (typical organic acids, organic salts, inorganic salts, organic amines, and their mixture) on the desulfurization properties, including pH buffering characteristics of slurry, dissolution characteristics of CaCO3, oxidation characteristics of CaSO3, desulfurization efficiency, and economic cost were investigated in this work. The results show that the pH buffering capacity is sodium benzoate ≈ Na2SO4 > adipic acid > double oxazine. The dissolution promoting effect of CaCO3 is acetic acid > double oxazine ≈ sodium acetate > MgSO4. The additives that can significantly promote the oxidation of CaSO3 are adipic acid, citric acid, acetic acid, MgSO4, and Na2SO4. Without an additive, the desulfurization efficiency of CaCO3 slurry decreased to 85.87% after 4 h. After the addition of the composite additive (CA-3), the desulfurization efficiency of CaCO3 slurry remained 96.53% for 4 h, increasing by 10.66%. The main reasons for the enhancement in the desulfurization process may be a collection of three factors: the reversible hydrolysis reactions of acetic acid and sodium acetate, the formation of an acid–base conjugate system by sodium benzoate, and the formation of a neutral ion pair MgSO3 by MgSO4 in the slurry. In addition, the composite additive has been used in the Dabie mountain power plant of China. The economic benefit analysis shows that the desulfurization unit of 4 × 640 MW coal-fired power plant can save 1.26 million dollars per year by composite additive.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Li Zhang,Ziqiang Liu,Xiaqing Zhang,Jianze Feng,Hongyun Ma,Wangjun Feng,Xiaoyun Wang,Qian Yue,Weizhe Liu
Sodium-based dual-carbon batteries (SDCBs), as a novel energy storage device, have aroused increasing interest due to their low cost and the natural abundance of sodium. However, the application of such devices is currently limited by the low specific capacity and inferior cyclic stability, which is caused by the formation of an unstable anodic interface and significant crosstalk between anions and cations in the electrolyte. Here, we propose a dual-additive strategy employing Na 2 C 2 O 4 as a cathode additive and fluoroethylene carbonate (FEC) as an electrolyte additive that effectively creates a stable anodic interface and suppresses anion-cation crosstalk. The as-constructed SDCBs with dual additives deliver good rate capability (30.9 mAh g −1 at 0.5 A g −1 ), excellent cyclic stability (∼81.9 % retention at 0.1 A g −1 after 280 cycles), and a high energy density of 192.6 Wh kg −1 , which is superior to the performance of SDCBs with only one of the additives or without either additive. The anodic interface on the cycled anode becomes stable and uniform after the addition of the dual additives, and contains more Na-rich inorganic species and fewer organic species. The proposed strategy can improve the electrochemical performances of SDCBs and promote the commercial application of such devices thanks to the low cost, ease of operation, high safety, and environmental friendliness.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Reaction Chemistry & Engineering
·
2024
·Vol. 10
·期 1
·214-223
·
IF 3.4
Weihao Xu,Xipo Ma,Pengbo Lyu,Zhenren Gao,Chunshuang Yan,Chade Lv
Aqueous zinc-ion batteries (AZBs) suffer from poor reversibility and limited lifespan due to parasitic side reactions and dendrite growth induced by active water. Although additives are widely used to address these issues by reducing the water content within the Zn-ion solvation sheaths, the strong interaction between the additives and Zn2+ causes poor de-solvation kinetics. Here, we propose a strategy that introduces an electron-withdrawing halogen group to reduce the polarity of the sugar additive. Theoretical simulations and experimental results demonstrate that a sucralose additive with optimal polarity can decrease the coordinated active water without hindering the de-solvation kinetics of Zn2+. This effectively regulates the overpotential and inhibits side reactions. Meanwhile, the additive can adsorb onto the surface of the Zn metal to modify the direction of zinc deposition and suppress dendrite growth. As a result, the Zn//Zn symmetric cell with the sucralose electrolyte additive exhibits an outstanding cycling life of 2400 h at a current density of 1 mA cm−2. Moreover, when coupled with the V2O5 cathode, the full battery also demonstrates excellent operational stability, achieving 4000 cycles with a retained capacity of 51.84%.
研究领域:
储能材料
·
电化学
·
电池技术
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材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Xiaozhi Zhang,Yaojie Yan,Qi Lu,Baoluo He,Shujuan Liu,Meirong Cai,Qian Ye,Feng Zhou
In this paper, we report the successful synthesis of the zwitterionic polymer PEIS functionalized covalent organic frameworks (COFs), abbreviated as LZU1-PEIS, via two mechanochemical means, namely tribochemical reaction and ball milling , denoted as LZU1-PEIS-TC and LZU1-PEIS-BM, respectively. The LZU1-PEIS can be derived when a mechanochemical-driven Schiff base reaction occurs between the aldehyde-terminated COFs and the rich amino-terminated zwitterionic polymers. On account of their two-dimensional nanoscale structure , easiness to shear, and superior hydration capability, the as-prepared LZU1-PEIS manifested remarkable tribological properties as water lubricant additives . The average friction coefficients were reduced from 0.67 to 0.31 (LZU1-PEIS-TC) and 0.23 (LZU1-PEIS-BM), respectively. Furthermore, the formation of a physical protective film fabricated via deposition of the nano-additives and tribochemical reaction is instrumental in curtailing friction and wear. Our research focuses on the preparation of functionalized COFs as lubrication additives, and offers a credible experience and promising design contemplation toward lubricating materials.
研究领域:
材料科学
·
机械工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Hanxiao Zhou,Wenjuan Xu,Taohua Liang,Weimei Shi,Gongchang Peng
Fluorosubstituted compounds are widely employed in lithium batteries as electrolyte additives to create stable interfaces. However, the composition of inorganic and organic components in the solid electrolyte interface (SEI) has received limited attention. This study introduces a composite additive consisting of fluoroethylene carbonate (FEC) and N, O-bis(trimethylsily)trifluoroamide (BSTFA). By balancing organic and inorganic constituents in the SEI, a high-performance lithium metal anode is achieved. Besides assessing the performance of lithium metal batteries using a composite additive at a high loading (∼6 mg cm −2 ) and voltage (4.3 V), their performance under more rigorous conditions such as increased loading (∼12 mg cm −2 ), elevated temperature (55 °C), and high voltages (4.6 V, 4.7 V, and 4.8 V), is also evaluated. Furthermore, this approach demonstrates applicability in high-loading lithium nickel manganese oxide (LNMO) battery systems. The synergistic effects of the composite additive are substantiated from various perspectives, offering essential insights and basic data for the commercial application of lithium metal batteries.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2019
·
IF 4.046
Lei Cao,Chun Liu,Hongyan Tian,Dandan Jia,Dongjun Wang,Yang Xu,Jintang Guo
The mechanism of synthetic polymer fluid loss additive (FLA) was based on adsorption of FLA on the surface of hydrating cement particles and the formation of a complex network structure, resulting in decline of cement slurry filtrate. However, due to the complexity of early hydration environment of cement slurry, there was lack of effective and intuitive way to characterize the adsorption interaction between FLA and cement particles. In this study we described our quest in furthering understanding of the adsorption action of fluid loss additive on the cement minerals. By fluorescence staining technique (combined polymer additives with organic fluorescent dyes), we observed that the skin of the hydrated particles was coated with dyed polymer, which led to a successful fluid loss additive. More importantly, the analysis of the fluorescence intensity of luminous polymer in cement pore solution distinguished the respective adsorption capacity of various admixtures (dyed and undyed) on the surface of the cement particles, so as to solve the problem of the traditional method in characterizing the competitive adsorption between polymers, thus gave a convenient way to analyze the interaction mechanism between polymer admixture and cement particles from the theory and technology.
研究领域:
材料科学
·
化学工程
·
土木工程
✓ 已验证
产品关联
DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 10
·1432
·
IF 2.7
Yuke Shen,Shuang Hao,Angqian Suonan,Yanxia Liu,Hangqi Li,Wei Ma,Lin Zhao,Yagang Zhang
Nano-micro calcium carbonate has a small particle size, uniform distribution, and good dispersion performance, offering great research value and development prospects. It has been widely used as a filler material for rubber, paper, ink, pigments, and coatings. Developing an efficient and controllable approach to preparing nano-micro calcium carbonate with adjustable morphology and controllable size has significant economic and environmental benefits. This study reports the controllable synthesis of nano-micro calcium carbonate meditated by additive engineering. The effects of various additives including inorganic acids, organic acids, alcohol, and surfactants on the particle size and morphology of the prepared materials were investigated. SEM, FT-IR and other characterization methods were used to analyze the prepared nano-micro calcium carbonate particle size, dispersion, and uniformity. The results showed that the particle size of calcium carbonate was 4~7 μm with a cubic structure. The particle size of calcium carbonate prepared by adding surfactant additives is in the range of 1~4 μm, and the crystal shape of calcium carbonate changes from calcite to vaterite after adding sodium dodecyl benzene sulfonate. With the aid of additives, the calcium carbonate particles dispersed more evenly. The mechanism of the controllable synthesis of nano-micro calcium carbonate mediated by additive engineering is elucidated and discussed. SDBS was found to be the best additive for preparing nano-micro calcium carbonate, and the synthesis conditions were explored and optimized.Keywords:calcium carbonate;additive;particle size and morphology;energy conservation
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 8
·1747
·
IF 3.2
Wei Xu,Yedi Li,Tingjun Wu,Yu Duan,Lei Zhu,Qiang Liu,Yiying Wang,Wenjie Yu
Copper interconnect technology faces limitations due to the electron’s mean free path and electromigration, driving the adoption of cobalt alternatives. This study proposes a novel mechanism to achieve superfilling by tuning the adsorption energy of additive molecules on cobalt surfaces. The adsorption energies of additives are tailored by changing molecular structures with different functional groups. Computational results reveal that carbon–carbon triple bonds critically strengthen adsorption, while ether bonds further enhance binding on distinct cobalt crystallographic planes. Specifically, 1,4-bis(2-hydroxyethoxy)-2-butyne (BEO) containing both triple bonds and ether groups exhibits the highest adsorption energy (−22.62 eV). Replacing ether with hydroxyl groups in 2-butyne-1,4-diol (BOZ) reduces the adsorption energy to −10.39 eV, while eliminating triple bonds in 1,4-butanediol diglycidyl ether (BDE) further decreases it to −8.43 eV. Experimental studies demonstrate that BOZ and BEO preferentially adsorb on the (101) and (110) planes of hexagonal close-packed cobalt (HCP-Co) due to their differential adsorption energies. This selective suppression promotes preferential growth along the densely packed (002) orientation. This leads to a trench-filling process dominated by the most densely packed plane, resulting in better electrical performance. Superfilling is achieved when molecular adsorption energies are in the range of 5–8 eV. The work establishes a functional group design strategy to regulate additive adsorption, enabling crystallographic control for advanced cobalt electrodeposition processes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
An-Nan Chen,Jia-Min Wu,Huan Xiao,Jing-Yan Chen,Xiao-Yan Zhang,Fen Chen,Yi-Xin Ma,Chen-Hui Li,Qing-Song Wei,Yu-Sheng Shi
A novel rapid, uniform and non-contamination in-situ solidification method for alumina suspension by DCC-HVCI method using MgO sintering additive as coagulating agent was reported. MgO was used to release Mg 2+ in suspensions via reaction with acetic acid generated from glycerol diacetate (GDA) at elevated temperature as well as to improve density and suppress grain growth of alumina ceramics during sintering. Influence of adding 0.7 wt% MgO with 2.0 vol% GDA in alumina suspension on coagulation process and properties of green bodies and sintered samples were investigated. It was indicated that the controlled coagulation of the suspension could be achieved after treating at 70 °C for 10 min. Homogeneous composition distribution of Mg element in EDS result indicated the uniform solidification of suspensions. Compressive strength of wet-coagulated bodies is 2.09±0.25 MPa. Dense alumina ceramics with relative density of 99.2% and flexural strength of 354±16 MPa sintered at 1650 °C for 4 h present homogeneous microstructure. The result indicated that the novel DCC-HVCI method via a sintering additive reaction with no contamination, short coagulation time and uniform in-situ solidification is a promising colloidal forming method for preparing high-performance ceramic components with complex shape.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
·
2014
·
IF 2.563
Yuan-Xiang Fu,Zhuo-Xian He,Dong-Chuan Mo,Shu-Shen Lu
Graphene-epoxy thermal conductive adhesive was obtained using few-layer graphene sheets as additives which were fabricated by a re-expansion and exfoliation method. The experimental results show that graphene sheets can effectively enhance the thermal conductivity of epoxy matrix , with 4.01 W m −1 K −1 for the maximum filling loading of weight 10.10%, which is enhanced by more than 22 times of the pure epoxy resin , about 2.2 times higher than that of the same resin with the maximum weight 16.81% filled with graphite nanoflakes, and approximately 2.4 times higher than that of the same resin with the maximum weight 44.3% filled with the natural graphite powder .
研究领域:
材料科学
·
热传导工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）