ELECTROCHIMICA ACTA
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2026
·
IF 5.8
Xin Li,Wenpo Li,Rong Wang,Chunliu Xu,Lei Guo,Jawza A. Almutairi,Hanan Alghibiwi,Bochuan Tan
[N₁₈₈₈][NTf₂] serves as a bifunctional electrolyte additive for Mg–air batteries. • [N₁₈₈₈][NTf₂] forms a hydrophobic, MgF₂-containing interfacial layer on Mg. • DFT and MD simulations reveal preferential and stable adsorption on Mg(0001). • The protective effect is concentration-dependent, with an optimum at 1 mM. • The cell delivers 1853.3 Wh·kg⁻¹ and a discharge duration of 123.3 h. Mg-air batteries are limited by severe self-corrosion of the magnesium anode and accumulation of discharge products, leading to reduced anode utilization and discharge voltage. This study introduces the ionic liquid [N₁₈₈₈][NTf₂] as a bifunctional electrolyte additive to regulate the magnesium/electrolyte interface. The long alkyl chain of [N₁₈₈₈]⁺ forms a hydrophobic barrier, restricting water access to the magnesium surface and inhibiting magnesium self-corrosion; [NTf₂]⁻ coordinates with Mg²⁺, slowing the accumulation of discharge products. This complementary cation-anion regulation achieves a balance between inhibiting corrosion and maintaining effective dissolution of the magnesium anode. The full cell achieved a discharge voltage of 1.45 V and a specific energy of 1853.3 Wh·kg⁻¹ at 5 mA·cm⁻²; at 10 mA·cm⁻², the discharge time reached 123.3 h, approximately seven times that of the blank electrolyte. This work provides an ion-specific interface regulation strategy for improving magnesium anode utilization and the discharge performance of MABs. Download: Download high-res image (331KB) Download: Download full-size image
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Yijie Cai,Bingxi Song,Chaoyang Liu,Xingyu Wang,Long Liu,Lei Chen,Zongjie Li,Yingying Cao,Yanqiang Zhang
In this study, a novel sulfonic acid-functionalized ionic liquid N,N,N-triethyl-4-sulfobutan-1-aminium nitrate ([Btem-SO3H][NO3]) was synthesized as a nitrating agent. The cation and anion of [Btem-SO3H][NO3], respectively, provide an acidic environment and a nitro source, enabling green nitration of TMETN (Trimethylolethane trinitrate). It was found that [Btem-SO3H][NO3] exhibited good thermal stability up to 170 °C. The acidity of [Btem-SO3H][NO3] increases with a decrease in the water content. When the water content is lower than 9%, the nitration efficiency remains unchanged. The [Btem-SO3H][NO3] system exhibited a ΔTad of 57.62 °C and an MTSR of 30.54 °C, which are significantly lower than 88.15 and 36.96 °C of the fuming HNO3 system. Under optimized conditions, a TMETN yield of 95% was achieved, and the ionic liquid maintained ideal activity after five recycling cycles, outperforming fuming nitric acid (89% yield, poor recyclability). Mechanism analysis showed that the reaction of [Btem-SO3H][NO3] with Ac2O to form acetyl nitrate (CH3COONO2) is a key step in the entire nitration reaction. These findings demonstrate that [Btem-SO3H][NO3] reduces waste acid emissions and improves thermal safety and reusability while maintaining high nitration efficiency, providing a promising strategy for replacing traditional nitric acid systems and achieving green and sustainable synthesis of nitrate esters.
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APPLIED CATALYSIS A-GENERAL
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2026
·
IF 4.8
Youwei Wu,Ning Zhou,Tingyan Peng,Weixin Ma,Lili Qiu,Fei Xue,Zhifeng Dai,Yubing Xiong
Poly(ionic liquids) (PILs) offer many inherent advantages in material design, owing to their tunable structure, polarity, and versatile functionalization capability. These properties make PILs highly promising candidates for heterogeneous catalysis, especially carbon dioxide (CO 2 ) conversion and utilization. In this work, a triazine-functionalized isocyanate monomer and an amino-functionalized imidazolium-based PIL were designed and synthesized. Through the addition polymerization, a family of novel urea- and triazine-functionalized porous PIL heterogeneous catalysts (denoted as p-PIL-x) were prepared. The resulting materials were thoroughly characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and CO 2 adsorption measurements. The catalysis evaluation revealed that p-PIL-x promotes efficient CO 2 conversion via intramolecular synergy among the urea, triazine, and imidazole motifs, all of which are rich in nitrogen species. Under optimized conditions (0.1 MPa, 80 °C, 24 h), the catalyst achieved a cyclic carbonate yield of 94.33% with 99% selectivity. The reaction mechanism was further elucidated through density functional theory (DFT) calculations and in situ FT-IR measurement, which highlighted the cooperative role of hydrogen-bond donors and bromide ions in activating both the epoxide substrate and CO 2 . The synthesized p-PIL-x catalyst exhibits excellent heterogeneity, stability, and recyclability, offering a promising platform for the development of multifunctional heterogeneous catalysts toward efficient and sustainable CO 2 conversion.
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ACS Applied Polymer Materials
·
2026
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IF 5.2
Yixin Wei,Jiaying Chen,Yaowu Cai,Qiankun Shi,Guosheng Shao,Ruohan Hou,Peng Zhang
Abstract Lithium metal batteries (LMBs) are promising next-generation energy storage systems. However, their practical application remains limited by safety concerns and poor compatibility with high-voltage cathodes, arising from interfacial instability, dendrite growth, and uneven ion transport at the electrode–electrolyte interface. Solid polymer electrolytes (SPEs) improve safety but still suffer from low Li+ transference numbers and insufficient interfacial stability. Herein, a synergistic polymer, ionic liquid, and inorganic composite electrolyte (FALET) is developed to regulate ion transport and interfacial chemistry. The polymer/ionic liquid matrix facilitates Li+ transport, while EMIMTFSI also participates in interfacial electrochemical processes during Li plating/stripping. TiO2 nanofibers further regulate TFSI– anions and promote lithium salt dissociation through Lewis acid interactions. The resulting cooperative regulation of ion transport and interfacial chemistry homogenizes Li+ flux, promotes the formation of a dense inorganic rich SEI, and suppresses dendrite growth. The FALET electrolyte exhibits an ionic conductivity of 6.52 × 10–4 S cm–1, a Li+ transference number of 0.31, and a stability window of 5.01 V. It enables stable Li||Li cycling over 2700 h and a Coulombic efficiency of 96% in Li||Cu cells. Full cells further demonstrate stable cycling, high-voltage compatibility, and enhanced safety with improved flame retardancy and thermal stability. This work provides an effective strategy for developing safe and high-voltage-compatible solid polymer electrolytes.
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ACS Applied Polymer Materials
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2026
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IF 5.2
Guangchao Zhai,Yifan Zhang,Zhi Li,Qingguo Zhang,Zheng Xing
Abstract Conductive polymer hydrogels that integrate mechanical robustness, self-healing, adhesion, ionic conductivity, and long-term stability are highly desirable for flexible electronics. Herein, a machine learning (ML)-guided strategy was developed to design multifunctional polyacrylamide/chitosan dual-network hydrogels incorporating 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and sorbitol. An exploratory ML screening of 31 literature-derived additives prioritized imidazolium-based ionic liquids (ILs) as promising candidates within the investigated chemical space. The optimized hydrogel exhibited a tensile stress of 0.16 MPa, an elongation at break of 688.6%, a tensile-strength recovery of 92.7% after 30 min, an ionic conductivity of 3.2 S m–1, and a broad-range gauge factor (GF) of 4.277. In situ characterizations, component-removal experiments, density functional theory (DFT) calculations, and molecular dynamics (MD) simulations provided complementary evidence that hydrogen bonding, Al3+-mediated coordination, electrostatic interactions, and interfacial interactions collectively contribute to the polymer network and ion-transport behavior. The hydrogel enabled reliable human motion monitoring, handwriting recognition, human-machine interaction (HMI), and flexible supercapacitors with 85% capacitance retention after 10,000 cycles. This work provides a data-driven polymer-network design strategy for multifunctional conductive hydrogels toward flexible electronic applications.
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ACS Applied Energy Materials
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2026
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IF 5.5
Fuwei Sun,Yao Li,Ziang Huang,Weigang Liu,Chao Liu,Rui Wang,Pengcheng Li,Chen Wang,Bo-Qing Xu,Guangtao Li
Abstract Au/TiO2 is a promising photocatalyst for CO2 reduction, yet its performance is often limited by inefficient light utilization and insufficient local CO2 availability. Here, we present an integrated photocatalytic platform by embedding Au/TiO2 nanoparticles within imidazolium poly(ionic liquid) (PIL) nanocone arrays. The nanocone architecture provides broadband light harvesting with > 99% absorptivity, while the imidazolium PIL enriches CO2 near the catalytic sites, enabling synergistic enhancement of CO2 photoreduction. The intrinsic counter-anion exchangeability of the PIL further enables programmable regulation of the overall catalytic activity and product formation selectivity. By optimizing the counter anion and water supply, the system selectively produces CO (124.89 μmol·g–1·h–1, 94.2% selectivity) or CH4 (137.75 μmol·g–1·h–1, 100% selectivity). Metalloporphyrin counter anions additionally enable C2 product formation, while functional catalytic anions allow cascade conversion of CO2 into polymeric products. This work demonstrates an integrated strategy that couples light management, substrate enrichment, and reaction programmability for efficient and versatile solar-driven CO2 conversion.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Zhang Tianhao,Tian Yuan,Zhang Chong,Yan Tingting,Yan Hanwen,Zhang Guoliang,Li Jie,Li Zengxi,Wang Gang,Li Chunshan,Zhang Suojiang
Electronic properties of active sites profoundly influence catalytic production of value-added chemicals; however, rational description and modulation is still a significant challenge. Herein, we propose an effective metal-ion-chelation strategy guided by density functional theory prediction and in situ Raman observation to structurally tailor and quantitatively correlate the electronic properties of active sites in ionic liquid. Comprehensive characterizations and theoretical calculations, in combination with electronic properties–performance correlations, reveal the electronic peculiarity of nitrogen and oxygen centers can be controllably restructured for remarkable improvement of catalytic performance at near-ambient condition. The turnover frequency is increased by two folds with deactivation rate suppressed by more than one half, while the kilogram-scaled recycling pilot achieves similar performance for the probe methacrolein synthesis. This strategy further exhibits excellent applicability and tolerance in other substrates with representative functional groups. Our work expresses the significance of electronic properties and provides a valid regulation approach for ionic liquid catalysis.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 25
·2112991
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IF 19.924
Jiangning Li,Xianghuan Meng,Zhiheng Wu,Yanyan Duan,Ruxin Guo,Weidong Xiao,Yongshang Zhang,Yukun Li,Yonglong Shen,Wei Zhang,Guosheng Shao
Lead-free Cs 2 AgBiBr 6 double perovskite has received widespread attention because of its non-toxicity and high thermal stability. However, intrinsic bromide ion (Br – ) migration limits continuous operation of Cs 2 AgBiBr 6 -based perovskite solar cells (PSCs). Herein, an operational and simple strategy is carried out to improve the power conversion efficiency (PCE) and long-term stability of Cs 2 AgBiBr 6 -based PSCs by introducing 1-butyl-1-methylpyrrolidinium chloride (BMPyrCl) and 1-butyl-3-methylpyridinium chloride (BMPyCl) ionic liquids (ILs). The higher binding energy between Br – in Cs 2 AgBiBr 6 and cation in IL containing pyrrole can inhibit Br – migration effectively, thereby reducing film defects and improving energy level matching. The optimized PCE of 2.22% is obtained for hole transport layer-free, carbon-based PSC, which hardly degrades at 40% ± 5% relative humidity and 25 °C for 40 days. This work highlights an effective method to mitigate the halide migration in Cs 2 AgBiBr 6 perovskite, thus providing an effective route in promoting the development of lead-free double PSCs.
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 2
·121733
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IF 7.5
Qing Yang,Yanmei Deng,Shuangjiang Li,Xiliang Li,Tingyan Ye,Yi Liu,Yunfei Zhi,Shaoyun Shan
The conversion of CO 2 into cyclic carbonates is crucial for achieving carbon neutrality and enabling resource recycling. Developing efficient heterogeneous catalysts from renewable biomass is a key direction in green catalysis. This study designed a green and efficient heterogeneous catalyst (MCA-PIL) by acetylating bamboo-derived cellulose to construct a porous cellulose acetate support, followed by immobilization of 1-methyl-3-allylimidazolium bromide. The catalyst was systematically characterized using FTIR, XPS, solid-state 13 C NMR etc., which confirmed its chemical structure, hierarchical porosity, and thermal stability. Under optimized conditions (120 ℃, 1.5 MPa CO 2 , 8 h), MCA‑PIL achieved a 99 % yield of chloropropene carbonate from CO 2 and epichlorohydrin without solvent or co-catalyst. The catalyst exhibited broad substrate scope across various epoxides and maintained high activity over five consecutive cycles. Kinetic studies indicated first-order reaction kinetics with an apparent activation energy of 48.35 kJ·mol −1 . Experimental and density functional theory (DFT) analyses revealed a synergistic three-step mechanism: cooperative activation of the epoxide and CO 2 by surface hydroxyl groups and the imidazolium ring, followed by Br - -induced ring-opening, CO 2 insertion, and cyclization to form the product with concurrent catalyst regeneration. This work provides new design principles for biomass‑based catalysts and demonstrates a synergistic strategy integrating CO 2 valorization with renewable material development.
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Journal of Energy Storage
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2026
·
IF 10.7
Han Wang,Yan Wang,Shixiong Sun,Ming Li,Junwei Lang,Jianmin Zhang
Poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) are considered commercially promising for lithium metal batteries (LMBs) due to their high lithium-salt solubility, flexibility, electrochemical stability, and interfacial compatibility. Nevertheless, their practical application is hindered by the high crystallinity of PEO, which leads to low ionic conductivity of PEO at room temperature. In this work, a dicationic ionic liquid, Butyl-3-dimethylpyrrolidine bis[(trifluoromethanesulfonyl)imide] (C 4 PyTFSI), is incorporated as a functional filler into PEO-LiTFSI matrix to form a composite SPE. The C 4 Py 2+ boosts ion conductivity by both disrupting PEO crystallinity via spatial hindrance and promoting Li + ion dissociation through charge shielding. The optimized electrolyte with 5wt%C 4 PyTFSI exhibit a high lithium-ion transference number ( t Li + ) of 0.61, a wide electrochemical stability window of up to 4.5 V , and superior lithium plating/stripping stability exceeding 550 h at 0.1 mA cm −2 . Consequently, the LFP|SPE-5|Li cell delivered excellent rate performance at 30 °C, specific discharge capacities of 162, 154.6, 152.1, 147.6, and 130.2 mAh g −1 were achieved at 0.1C, 0.2C, 0.3C, 0.5C, and 1.0C, respectively. At 40 °C, the cell maintained robust performance with capacities of 159.1, 158.4, 157.1, 154.6, and 147 mAh g −1 at the same rates. Moreover, the cell exhibited remarkable cycling stability, retaining 95% of its capacity after 100 cycles at 0.5C and 30 °C, and maintaining 80% even after 120 cycles under the more demanding conditions of 1C and 40 °C. This work provides new insights into the application of PEO-based SPEs in LMBs.
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Applied Sciences-Basel
·
2020
·Vol. 10
·期 10
·3625
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IF 2.474
Feng Feng,Yanxia Sun,Jiayao Rui,Lu Yu,Jiamei Liu,Ning Zhang,Mingxing Zhao,Linwei Wei,Chunshan Lu,Jia Zhao,Qunfeng Zhang,Xiaonian Li
Featured ApplicationThis work can be applied to the recovery of precious metals in WEEE and waste catalyst.The extraction of precious metals is of significant importance for recycling valuable precious metal resources, however, most of the current methods for extraction are inefficient, energy-intensive, or environmentally unfriendly. Herein, we report a new chemical dissolution system for precious metals employing the trichloroisocyanuric acid (TCCA) as an oxidant and tributyl monomethyl ammonium chloride (N4441Cl) as a complexant. The leaching yield was achieving 100 wt% for the metals of Au, Pd, Cu, and Ag at 25 °C, and the average dissolution rate of gold was reaching 375 mg/h, 107.1 times higher than that of traditional cyanide method. Based on the analysis of UV-Vis and XPS results, a possible reaction mechanism was proposed: the precious metals were probably oxidized by TCCA, then the formed precious metal ions coordinate with N4441Cl strongly to promote the dissolution process. Applied to gold dissolution from ores, waste electronic and electrical equipment (WEEE) and waste catalysts, the leaching yield of the TCCA-N4441Cl coordinative composite reached 97, 100, and 100 wt%, respectively, demonstrating that this method is not only efficient and environmentally friendly, but also with great adaptability and high potential for real applications.
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RSC Advances
·
2026
·Vol. 16
·期 9
·7844-7853
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IF 6.1
Yufan Wang,Yue Wang,Li Qin,Zhuo Zhang,Yang Yu
The incorporation of microstructural designs into flexible sensors has emerged as a potent strategy to enhance the capability of capturing fine information. Herein, an ionic liquid microemulsion-template strategy is presented to fabricate conductive heterogels with a bicontinuous structure of interpenetrating hydrophilic and hydrophobic phases, in which the hydrophilic ionic liquid domain functions as ion-rich channels and provides conductivity. The hydrophobic polymer domain serves as a supporting skeleton. Amphiphilic zwitterions anchored at the phase interface serve as effective ion transport sites to improve ion conduction. The bicontinuous structure enhances the mechanical performance, anti-swelling, thermal stability and ion conductivity of the heterogels. The assembled flexible sensor exhibits the sensitive detection of subtle muscle movements and specific recognition of speech, weight and temperature. This study is expected to provide innovative insights into the design and regulation of ion channels in flexible sensing devices.
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