CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fangyuan Xiao,Xiaoke Wang,Kaitong Sun,Qian Zhao,Cuiping Han,Hai-Feng Li
Corrosion and the formation of by-products resulting from parasitic side reactions, as well as random dendrite growth, pose significant challenges for aqueous zinc-ion batteries (AZIBs). In this study, phytate ammonium is introduced into the traditional dilute Zinc sulfate electrolyte as a multi-functional additive. Leveraging the inherent zincophilic nature of the phytic anion, a protective layer is formed on the surface of the zinc anode. This layer can effectively manipulate the deposition process, mitigate parasitic reactions, and reduce the accumulation of detrimental by-products. Additionally, the competitive deposition between dissociated ammonium ions and Zn 2+ promotes uniform deposition, thereby alleviating dendrite growth. Consequently, the modified electrolyte with a lower volume addition exhibits superior performance. The zinc symmetric battery demonstrates much more reversible plating/stripping, sustaining over 2000 h at 5 mA cm −2 and 1 mA h cm −2 . A high average deposition/stripping efficiency of 99.83 % is achieved, indicating the significant boosting effect and practical potential of our strategy for high-performance aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
PNAS Nexus
·
2024
·Vol. 3
·期 2
·
IF 2.2
Wu Jing-Hang,Yang Tian-Hao,Chen Fei,Yu Han-Qing
Aromatic amines (AAs), ubiquitous in industrial applications, pose significant environmental hazards due to their resistance to conventional wastewater treatments. Peracetic acid (PAA)-based advanced oxidation processes (AOPs) have been proposed as effective strategies for addressing persistent AA contaminants. While the organic radicals generated in these systems are believed to be selective and highly oxidative, acetate residue complicates the evaluation of AA removal efficiency. In this work, we explored transformation pathways of AAs in a representative Co(II)-catalyzed PAA system, revealing five side reactions (i.e. nitrosation, nitration, coupling, dimerization, and acetylation) that yield 17 predominantly stable and toxic by-products. The dominant reactive species was demonstrated as Co–OOC(O)CH3, which hardly facilitated ring-opening reactions. Our findings highlight the potential risks associated with PAA-based AOPs for AA degradation and provide insights into selecting suitable catalytic systems aimed at efficient and by-product-free degradation of pollutants containing aromatic –NH2.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Catalysts
·
2018
·Vol. 8
·期 9
·383
·
IF 3.465
Wenting Fang,Hualei Hu,Zhongsen Ma,Lei Wang,Yajie Zhang
The revealing mechanism of side reactions is crucial for obtaining theoretical yield in industrialization when 2,5-bis(methoxymethyl)furan (BMMF) yield is above 95%. By-products catalyzed by the conventional ZSM-5 (C-ZSM-5) and hierarchical porous ZSM-5 (HP-ZSM-5) catalytic systems were different, and some key by-products were identified. Thus, possible pathways were proposed, which helps to further improve BMMF selectivity. Additionally, HP-ZSM-5 exhibited quicker reaction rate, higher BMMF yield and selectivity, and slower deactivation process. The relatively weak acidity of HP-ZSM-5 suppresses the ring-opening reaction and subsequent side reactions, and introduction of mesopores improves mass transport and slightly increases hydration of 2,5-bis(hydroxymethyl)furan (BHMF).Keywords:etherification;furanic diether;heterogeneous catalysis;side reaction;ZSM-5
研究领域:
化学工程
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2022
·
IF 4.177
Yuhan Zou,Xianzhong Yang,Zaikun Xue,Yiwen Su,Changpeng Qiao,Wenyi Guo,Ziang Chen,Jingyu Sun
The unsatisfactory cycling stability of Zn anode stemming from dendritic growth and side reactions has slowed the rapid development of aqueous Zn-ion batteries (AZIBs). Constructing a three-dimensional (3D) artificial interphase layer is an appealing solution since it could dictate Zn deposition at the interface. Here, the in situ growth of a Cu-based metal–organic framework (Cu-MOF) over commercial Zn foil followed by subsequent selenization endows selenized Cu-MOF (SCM) with a stabilized Zn anode. The 3D SCM coating could homogenize the electric field and function as a reservoir to tolerate the deposited Zn. As a result, both rampant dendritic propagation and the notorious side reactions are concurrently inhibited. The SCM@Zn symmetric cell displays an elongated cyclic life for over 500 h at 2.0 mA cm–2. The assembled AZIB full cell readily realizes high electrochemical reversibility under different current densities. Our investigation offers insights into the design of a protective layer for high-performance Zn anodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Yu Liu,Yongkang An,Lu Wu,Jianguo Sun,Fangyu Xiong,Han Tang,Shulin Chen,Yue Guo,Lei Zhang,Qinyou An,Liqiang Mai
Zn metal is thermodynamically unstable in aqueous electrolytes, which induces dendrite growth and ongoing parasitic reactions at the interface during the plating process and even during shelf time, resulting in rapid battery failure and hindering the practical application of aqueous Zn ion batteries. In this work, glycine, a common multifunctional additive, is utilized to modulate the solvation shell structure and enhance the interfacial stability to guard the reversibility and stability of the Zn anode. Apart from partially replacing the original SO42– in the contact ion pair of Zn2+[H2O]5·OSO32– complexes to suppress the formation of Zn4(OH)6SO4·xH2O byproducts at the interface, glycine molecules can also form a water-poor electrical double layer on the zinc metal surface during resting and be further reduced to build in situ a ZnS-rich solid electrolyte interphase (SEI) layer during cycling, which further suppresses side reactions and the random growth of Zn dendrites in the whole process. As expected, the cycle life of the symmetrical cells reaches over 3200 h in glycine-containing electrolytes. In addition, the Zn//NVO full cell shows exceptional cycling stability for 3000 cycles at 5 A g–1. Given the low-cost superiority of glycine, the proposed strategy for interfacial chemistry modulation shows considerable potential in promoting the commercialization progress of aqueous batteries.
研究领域:
电化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2014
·
IF 2.235
Yanwei Zhang,Pingan Peng,Zhi Ying,Qiaoqiao Zhu,Junhu Zhou,Zhihua Wang,Jianzhong Liu,Kefa Cen
The effects of SO2 flow rate, SO2 mole fraction, iodine content and water content on the Bunsen reaction were experimentally studied for the thermochemical iodine–sulfur cycle for hydrogen production. One multistage reaction mechanism on the Bunsen reaction has been hypothesized, considering the kinetic characteristics. The appearance of a liquid–liquid equilibrium (LLE) phase separation was in the range of 20–40 min in the apparatus we chose. An increase in iodine content and a decrease in water content improved LLE separation characteristics to the H2SO4 phase and HIx phase. The H2S formation side reaction easily occurred with the increase in water content and decrease in iodine content. The optimal operating condition that the inlet SO2 mole fraction exceeds 0.12 coupled with initial I2/H2O molar ratio exceeding 0.284 has been proposed based on the experimental results, for the criteria of improving the separation characteristics and preventing side reactions.
研究领域:
化学工程
·
氢能研究
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Yaqi Chen,Xieyu Xu,Jianli Cheng,Xuyang Wang,Dawei Wang,Yongjing Wang,XingXing Jiao,Jian Chen,Shizhao Xiong,Zhongxiao Song,Yangyang Liu
All-solid-sate batteries (ASSBs) with a NASICON-type solid-state electrolyte (SSE) of Li1.3Al0.3Ti1.7(PO4)3 (LATP) can be accepted as a promising candidate to significantly improve safety and energy density due to their high oxidation potential and high ionic conductivity. However, thermodynamic instability between the cathode and LATP is scarcely investigated during cosintering preparation for the integrated configuration of ASSBs. Herein, the structural compatibility between commercially layered LiNi0.5Co0.2Mn0.3O2 (NCM523) and LATP SSE was systematically investigated by cosintering at 600 °C. It is noticeable that an extreme side reaction between Li from NCM523 and phosphate from LATP happens during its cosintering process, leading to a severe phase transition from a layered to a spinel structure with high Li/Ni mixing. Consequently, the capacity of NCM523 is lost during the preparation of the NCM523–LATP composite cathode. Based on this, we suggested that the interface modification of the NCM523/LATP interface is valued significantly to inhibit this extreme side reaction, quickening the application of LATP-based ASSBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Zhejiang University-SCIENCE A
·
2013
·Vol. 14
·期 4
·300-306
·
IF 0.527
Zhu Qiao-qiao,Zhang Yan-wei,Ying Zhi,Zhou Jun-hu,Wang Zhi-hua,Cen Ke-fa
This study aimed to establish a closed-cycle operation technology with high thermal efficiency in the thermochemical sulfur-iodine cycle for large-scale hydrogen production. A series of experimental studies were performed to investigate the occurrence of side reactions in both the H 2 SO 4 and HI
x
phases from the H 2 SO 4 /HI/I 2 /H 2 O quaternary system within a constant temperature range of 323–363 K. The effects of iodine content, water content and reaction temperature on the side reactions were evaluated. The results showed that an increase in the reaction temperature promoted the side reactions. However, they were prevented as the iodine or water content increased. The occurrence of side reactions was faster in kinetics and more intense in the H 2 SO 4 phase than in the HI
x
phase. The sulfur or hydrogen sulfide formation reaction or the reverse Bunsen reaction was validated under certain conditions.
研究领域:
化学工程
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2021
·Vol. 14
·期 1
·1-13
·
IF 16.419
Xie Shiyin,Li Yang,Li Xu,Zhou Yujun,Dang Ziqi,Rong Jianhua,Dong Liubing
Zn-based electrochemical energy storage (EES) systems have received tremendous attention in recent years, but their zinc anodes are seriously plagued by the issues of zinc dendrite and side reactions (e.g., corrosion and hydrogen evolution). Herein, we report a novel strategy of employing zincophilic Cu nanowire networks to stabilize zinc anodes from multiple aspects. According to experimental results, COMSOL simulation and density functional theory calculations, the Cu nanowire networks covering on zinc anode surface not only homogenize the surface electric field and Zn 2+ concentration field, but also inhibit side reactions through their hydrophobic feature. Meanwhile, facets and edge sites of the Cu nanowires, especially the latter ones, are revealed to be highly zincophilic to induce uniform zinc nucleation/deposition. Consequently, the Cu nanowire networks-protected zinc anodes exhibit an ultralong cycle life of over 2800 h and also can continuously operate for hundreds of hours even at very large charge/discharge currents and areal capacities (e.g., 10 mA cm −2 and 5 mAh cm −2 ), remarkably superior to bare zinc anodes and most of currently reported zinc anodes, thereby enabling Zn-based EES devices to possess high capacity, 16,000-cycle lifespan and rapid charge/discharge ability. This work provides new thoughts to realize long-life and high-rate zinc anodes.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Jianjie Qiang,Weijian Yu,Yuxuan Zhao,Li Zhang,Yelei Chen,Zifan Gao,Yizhou An,Shiru Le,Yachun Mao,Guangyu Zhao
Aqueous zinc ion batteries (AZIB) are considered to be one of the most powerful substitutes for the next generation of energy storage devices due to their high theoretical specific capacity, high safety, and low cost. However, AZIB is limited by Zn dendrites and side reactions during cycling, resulting in low coulombic efficiency and poor cycle stability. In this study, 5 % tetrahydrofuran (THF) was introduced into 2 M ZnSO 4 electrolyte as an electrolyte additive to improve the AZIB performance. Differential capacitance fitting, theoretical calculation and XRD tests show that THF can adsorb on the surface of Zn anodes to regulate the crystal orientation of Zn metal. Raman and FTIR tests show that THF can also inhibit dendrite growth and side reactions by destroying the hydrogen bond network in electrolyte. Therefore, the THF leads to a stable cycle of over 5300 h at a discharge regime of 1 mA cm −2 , 0.5 mAh cm −2 and over 950 h at a higher current density and area capacity of 2 mA cm −2 , 2 mAh cm −2 . Furthermore, the capacity retention rate of δ-MnO 2 ||Zn full battery reaches 93.63% after 1000 cycles under a current density of 1 A g −1 , significantly higher than the 70.55% without THF addition. This strategy provides a simple and low-cost method to solve the common issues of AZIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Li Chuang,Zheng Xueying,Sun Minghao,Tian Fei,Lei Danni,Wang Chengxin
The energy density of batteries can be increased by using high-load cathode material matched with sodium (Na) metal anode. However, the large polarization of the battery under such harsh conditions will promote the growth of Na dendrites and side reactions. Carbon materials are regarded as ideal modify layers on Na metal anode to regulate the Na + plating/stripping behavior and inhibit the Na dendrites and side reactions due to their light weight, high stability and structural adjustability. However, commonly used carbon nanotubes and carbon nanofibers cannot enable these modified Na metal anodes to operate stably in full batteries with a high-load cathode (> 15 mg·cm −2 ). The most fundamental reason is that abundant polar functional groups on the surface bring serious side reactions and agglomerations lead to uneven Na + flow. Here, a proof-of-concept study lies on fabrications of carbon nanospheres with small amount of polar functional groups and sodiophobic components on the surface of Na metal anode, which significantly enhances the uniformity of the Na + plating/stripping. The assembled symmetric battery can cycle stability for 1300 h at 3 mA·cm −2 /3 mAh·cm −2 . The full battery with high-load Na 3 V 2 (PO 4 ) 3 (30 mg·cm −2 ) maintains a Coulombic efficiency of 99.7% after 100 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2011
·Vol. 16
·期 10
·8463-8474
·
IF 1.988
Haibo Xie,Zongbao K. Zhao
A new compound was detected during the production of 5-hydroxymethylfurfural (HMF) from glucose and cellulose in the ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) at high temperatures. Further experiments found that it was derived from the reaction of HMF with [Bmim]Cl. The structure of new compound was established as 1-butyl-2-(5’-methyl-2’-furoyl)imidazole (BMI) based on nuclear magnetic resonance and mass spectrometry analysis, and a possible mechanism for its formation was proposed. Reactions of HMF with other imidazolium-based ionic liquids were performed to check the formation of BMI. Our results provided new insights in terms of side reactions between HMF and imidazolium-based ionic liquids, which should be valuable for designing better processes for the production of furans using biomass and related materials.
研究领域:
化学
·
生物质能
·
有机合成
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）