CERAMICS INTERNATIONAL
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2021
·Vol. 47
·期 22
·32025-32032
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IF 4.527
ChanQin Duan,Kanghui Tian,Xinglong Li,Dan Wang,Hongyu Sun,Runguo Zheng,Zhiyuan Wang,Yanguo Liu
High-entropy oxides (HEOs) with numerous functional features such as high structure stability and superionic conductivity are considered as promising candidates of electrode materials for lithium-ion batteries (LIBs). In this study, a series of single-phase spinel-structured high-entropy oxides (FeCoNiCrMnXLi) 3 O 4 (X = Cu, Mg, Zn) consisted of seven metal elements at equal molar ratio were synthesized by solid phase method. In-situ high-temperature XRD technique was used to investigate the structure evolution of (FeCoNiCrMnZnLi) 3 O 4 and a single-phase HEO was acquired at 900 °C. As the anode of LIBs, all the HEOs (FeCoNiCrMnXLi) 3 O 4 display excellent cyclic stability and rate capability owe to the expedite three-dimensional Li + transport pathways of spinel structure, the entropy-dominated phase stabilization effect together with the abundant oxygen vacancies introduced by the incorporation of Li + . In comparison, the (FeCoNiCrMnZnLi) 3 O 4 anode containing electrochemical active Zn with tetrahedral coordination structure shows better electrochemical lithium storage performances among the three samples. The ex-situ XRD of (FeCoNiCrMnZnLi) 3 O 4 during the discharge/charge procedure shows an amorphous state structure after the first lithiation process and it retained for the de-lithiation process. This work provides a new strategy to design high-entropy energy-storage material and pave the way for understanding the storage mechanism of HEOs.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.7
Yaqian Dong,Shuyu Yue,Kai Wang,Taotao Li,Tiehua Ma,Dong Guo,Yuxiang Wu,Zhibo Wu,Yaohui Zhang,Liang junfei
The sluggish kinetics of the oxygen reduction reaction (ORR) pose a critical bottleneck in the energy conversion efficiency of fuel cells and metal–air batteries. Developing non-precious metal catalysts with pH-universal adaptability and high cost-effectiveness is an urgent need in the field. In this study, we introduce an innovative biomass pyrolysis-driven nano-confinement strategy. Expired milk powder and g-C 3 N 4 are utilized as dual-function carbon sources to successfully construct a composite structure of nitrogen-doped carbon nanotubes (NCNTs) encapsulating FeCo alloy nanoparticles (FeCo@NCNT). During high-temperature pyrolysis, the decomposition products of milk powder deposit onto the molten FeCo particles, forming carbon nanotubes, while the decomposition of g-C 3 N 4 provides nitrogen doping and induces periodic distortions in the carbon lattice, resulting in nanoconfined morphology of FeCo@NCNT. This structure formed by N-doped carbon nanotubes encapsulating FeCo alloy enables the catalyst to achieve half-wave potentials of 0.83 V, 0.71 V, and 0.60 V in 0.1 mol·L −1 KOH, 0.5 mol·L −1 H 2 SO 4 , and 0.1 mol·L −1 PBS electrolytes, respectively. The assembled zinc–air battery exhibits an open-circuit voltage of 1.51 V and a peak power density of 169 mW∙cm –2 . This approach provides a new paradigm for biomass waste resource utilization and the design of energy catalysts for pH-universal applications.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Xue Liu,Miao Wang,Dongyang Xie,Hongyan Zhuo,Wenmiao Chen,Yuexing Zhang,Yanli Chen
As a promising energy storage technology, zinc-air/iodide hybrid batteries (ZAIHBs) require efficient bifunctional catalysts capable of simultaneously mediating both oxygen reduction reaction (ORR) and iodide oxidation reaction (IOR). Herein, we demonstrate a spin-orbital and hybridized energy level strategy by constructing heteroatom-doped carbon nanotube-supported iron phthalocyanine polymers (S/N-CNT@PFePc). Zero-field cooling (ZFC) measurements reveal that both S and N-doping on the axial position induces a spin-state transition from low-spin to intermediate-spin in the Fe centers, stemming from the broken symmetry of crystal field. Moreover, density functional theory (DFT) calculations justify that axial S coordination causing a closer energy level between the intermediates (*OH and *I) and Fe 3dz2 orbital, enabling promoted electron transfer compared to N-doping. As a result, the spin-orbital regulation in S-CNT@PFePc achieved a record-low charge–discharge voltage gap ORR-IOR potential gap of 0.34 V (ΔE = Ej=10IOR- E1/2ORR). Impressively, when implemented in ZAIHBs, the S-CNT@PFePc-based cathode delivers an exceptional energy efficiency of 70% with remarkable stability, retaining 66% efficiency after 500 hours - among the best performances reported for hybrid battery systems. Furthermore, the flexible solid-state ZAIHBs incorporating this catalyst demonstrate excellent mechanical robustness and cycling stability, underscoring their practical applicability.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Shuhan Chen,Jichang Sun,Pengyu Meng,Liansheng Li,Qinghua Liang
Aqueous zinc ion hybrid capacitors (ZIHCs) typically pair a battery-type Zn anode with a capacitor-type porous carbon cathode. Their capacity is conventionally thought to be limited by the intrinsic electric double-layer (EDL) capacitance and pseudocapacitance arising from the porous structure and surface chemistry of the cathode. This longstanding view has constrained the achievable energy density of ZIHCs. In this work, we challenge this paradigm by demonstrating that charging at high voltage substantially enhances the capacity of commercial cathodes in a 2 M ZnSO 4 electrolyte. Leveraging this insight, we develop two simple strategies to significantly increase the energy density of ZIHCs. An ex situ approach nearly doubles the capacity of a commercial cathode, yielding an order of magnitude increase in the specific energy E total based on the total active mass of anode and cathode when integrated into a Zn-limited configuration. Alternatively, an in situ strategy, which directly charges the device to a high voltage, achieves comparable enhancement while simplifying fabrication. Both strategies deliver exceptional cycling stability (over 60,000 cycles at 5.0 A g −1 ) and are successfully validated in pouch cell prototypes. Overall, this work provides a deeper mechanistic understanding and offers simple, low-cost routes to high-energy-density aqueous ZIHCs.
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ADVANCED POWDER TECHNOLOGY
·
2026
·Vol. 37
·期 9
·105408
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IF 4.5
Xiaoying Huang,Mingliang Xiang,Xiao Jin,Min Nie,Wei Xu,Rie Umetsu,Qing Yang,Yanan Chen,Jun-Qiang Wang,Yan Zhang
With the rapid advancement of power electronics toward high-frequency and miniaturization, there is an urgent demand for soft magnetic composites (SMCs) that possess both high permeability and low core loss. Herein, a novel Cr-O&(Ni,Zn)Fe 2 O 4 synergistic hybrid insulation was synthesized on FeSiBCCr amorphous powders via sequential hydrothermal and chemical co-precipitation methods. The oxygen partial pressure during annealing was optimized using 0.8 wt.% carbon powder to enhance the crystallinity and magnetic properties of the ferrite insulating coating. The resulting SMCs exhibited a saturation magnetization ( M s ) of 140.0 emu/g and an effective permeability ( μ e ) of 35.03. Notably, the core loss P 50mT/1MHz was reduced to 2143.10 mW/cm 3 , which is 50.72% lower than that of the core sample prepared by using raw powder without ferrite insulating coating. This synergistic hybrid insulation effectively suppresses inter-particle eddy currents and reduces domain wall pinning, offering a high-performance solution for high-frequency power electronics.
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ELECTROCHIMICA ACTA
·
2026
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IF 5.8
Fuyu Jiang,Peilin Liu,Yuhang Liu,Xi Chen,Jian Li,Yiyang Bi,Yuchun Wan,Wanqiang Liu
A hydrogen-bond-regulated PVA/CMC quasi-solid-state electrolyte with EG/H 2 O solvent was designed to realize antifreezing and dendrite-free aqueous Zn-ion batteries. • The synergistic polymer network and EG effectively reduced free-water activity, optimized Zn 2+ solvation, and enabled uniform Zn deposition. • COMSOL simulations and experimental analyses confirmed that the quasi-solid-state electrolyte homogenized the interfacial electric field and suppressed dendrite growth. • The Zn||Zn symmetric cell achieved a long cycling lifespan of 1100 h at room temperature and 1700 h at −30 °C. Aqueous zinc-ion batteries (AZIBs) have attracted extensive attention owing to their intrinsic safety, low cost, and environmental benignity. However, the practical application of AZIBs is severely hindered by the freezing of aqueous electrolytes at low temperatures and by uncontrolled Zn 2+ deposition, which induces dendrite growth. Herein, a freeze-resistant quasi-solid-state gel electrolyte is proposed, in which poly (vinyl alcohol) (PVA) and carboxymethyl cellulose (CMC) form a robust three-dimensional network via hydrogen bonding and chain entanglement. Ethylene glycol (EG) regulates the solvation environment by confining free water molecules, thereby depressing the freezing point and stabilizing the Zn 2+ solvation structure, enabling efficient ion transport at low temperatures. COMSOL Multiphysics (COMSOL) further confirms that the quasi-solid-state electrolyte effectively homogenizes the electric field distribution, suppresses dendrite growth, and mitigates interfacial corrosion. Benefiting from these synergistic effects, Zn||Zn symmetric batteries deliver a prolonged cycling lifespan of 1100 h at 1 mA cm –2 and 1 mAh cm –2 , which is 12 times longer than that of the ZnCl 2 electrolyte. Notably, an ultralong lifespan of 1700 h is achieved at -30 °C. Furthermore, the Zn||V 2 O 5 full cell exhibits outstanding cycling stability over 2000 cycles at 1 A g –1 . This work provides a promising strategy for designing antifreezing electrolytes and stabilizing Zn anodes for high-performance AZIBs under extreme conditions. Download: Download high-res image (278KB) Download: Download full-size image
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Nature Communications
·
2026
·
IF 18.1
Ren Lijuan,Hu Xiuli,Wang Shuyu,Shi Jiaqi,Gong Jiaxing,Wang Manyun,Zhou Ji,Wang Jianzu,Lv Xian-Wei,Bielawski Christopher W.,Geng Jianxin
Zinc−air batteries are promising devices for use in safe and cost-effective energy storage applications. However, their practical utility is hindered by sluggish oxygen evolution and oxygen reduction reactions. We show that hybridizing electronically coupled Co single atoms and a CoPd alloy within a three-dimensional macroporous N-doped carbon (CoPd/Co@3D NC) enables high-performance N 2 H 4 -assisted zinc−air batteries, where the oxygen evolution reaction is replaced with the thermodynamically more favorable hydrazine oxidation reaction. Experimental and theoretical data reveal that electronic coupling between the Co single atoms and the CoPd alloy mutually modifies their electronic structures, which, in turn, weakens oxygen adsorption on the Co single atoms and enhances N 2 H 4 adsorption on the Pd sites. The electronic-coupling effect accelerates the rate-limiting steps of the oxygen evolution and hydrazine oxidation reactions. Consequently, N 2 H 4 -assisted zinc−air batteries employing CoPd/Co@3D NC exhibit a small charging/discharging voltage gap of 0.52 V at 100 mA cm −2 , a peak specific power of 151 mW cm −2 , and a specific capacity of 810 mAh g −1 at 10 mA cm −2 ; these values are competitive when compared to those exhibited by conventional zinc−air batteries.
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Asian Journal of Organic Chemistry
·
2026
·Vol. 15
·期 7
·e70484
·
IF 2.3
Yuwan Yang,Jinhong Xiao,Zhenfeng Feng,Chunyan Deng,Yongjian Qiu,Shuman Chang,Yanxiu Zheng,Lin Lei,Yaju Chen
The integration of CO 2 capture and conversion into a single heterogeneous catalyst represents a pivotal step toward sustainable carbon resource utilization. Herein, we report a facile synthesis of porous hyper-crosslinked polymers (Salen(Zn)-iHCP) containing salen(Zn) complex and multi-ionic sites via a one-pot Friedel–Crafts alkylation and quaternization strategy. This strategy elegantly overcomes the porosity limitations typically encountered during direct polymerization of charged ionic monomers. The resulting Salen(Zn)-iHCP features a high specific surface area, good CO 2 -selective affinity, and a uniform distribution of proximal Lewis acidic Zn(II) centers and nucleophilic Br − sites. Owing to the synergistic effect between the Zn and Br − sites, coupled with a good CO 2 adsorption capacity, Salen(Zn)-iHCP exhibits high catalytic activity for the cycloaddition of CO 2 with various epoxides in the absence of any additives and solvents. At 100°C and 1.0 MPa, Salen(Zn)-iHCP2 achieves 99% conversion of epichlorohydrin with 97% yield of corresponding cyclic carbonate. Notably, Salen(Zn)-iHCP2 maintains high activity even using simulated flue gas (15% CO 2 in 85% N 2 ) as the carbon source and demonstrates robust recyclability over five cycles. This work provides a promising strategy for constructing high‑performance heterogeneous catalysts for integrated CO 2 capture and conversion.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Hongyang Zhao,Sihan Fan,Yulong Xiang,Junfeng Li,Yue Li,Xuelu Wang,Xinjuan Liu,Likun Pan
Asymmetric Ni-N-Cl sites are built by NH 4 Cl vaporization. • Ni-N-Cl overcomes the kinetic challenges and delivers excellent CO 2 reduction performance. • XAFS, DFT and CW-ODMR reveal the asymmetric coordination mechanism. • Cl coordination creates electron-rich Ni centers with shifted d-band. • Ni-N-Cl achieves 86.2% CO Faradaic efficiency and enables durable Zn-CO 2 batteries for 53 h operation. Electrocatalytic CO 2 reduction reaction to value-added chemicals represents a promising pathway for sustainable carbon utilization. However, the symmetric coordination environment of conventional M-N 4 single atom sites restricts electronic structure regulation and limits their intrinsic activity. Herein, we develop an asymmetric Ni-N-Cl coordination structure synthesized via high-temperature NH 4 Cl vaporization assisted strategy. This Cl-mediated asymmetric coordination induces a distinct charge redistribution, generates an electron enriched Ni center and an upward shift of the d-band center closer to the Fermi level. These intrinsic modulations significantly facilitate CO 2 activation and proton transfer to the *COOH, thereby lowering the reaction energy barrier. Consequently, the Ni-N-Cl catalyst achieves a CO Faradaic efficiency of 99.67% at -0.7 V vs. RHE in H cell and 17 h long term stability at -100 mA cm -2 in flow cell. Furthermore, this catalyst delivers a peak power density of 1.62 mW cm -2 and a durability of 53 h. This study provides a general methodology for the rational design of asymmetric single atom catalysts through orbital engineering for high-efficiency energy storage technologies. Download: Download high-res image (199KB) Download: Download full-size image
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Small Methods
·
2026
·
IF 8.7
Enmin Lv,Yilong Wang,Hongtao Yu,Hao Zhang,Xuefeng Zhang,Xinglong Dong
Developing efficient non-precious oxygen reduction reaction (ORR) catalysts is essential for advancing zinc-air batteries (ZABs). This work presents a one-step synthesis of core-shell Cr 3 C 2 @C nanoparticles (NPs) via DC arc-discharge plasma. Precise regulation of cooling dynamics achieves a switch from growth-dominated to nucleation-dominated regimes, enabling controlled preparation of nanoparticles with distinct sizes. The liquid-nitrogen-cooled Cr 3 C 2 @C ln NPs exhibit smaller size and higher surface area, leading to enhanced ORR performance. Subsequent nitrogen doping at 700 °C produces Cr 3 C 2 @C ln (N x ) catalysts with precisely tuned nitrogen content (0.65–1.24 at.%). The optimized Cr 3 C 2 @C ln (N 1.13 ) demonstrates outstanding ORR activity with a half-wave potential ( E 1/2 ) of 0.81 V and superior kinetics, surpassing commercial Pt/C. In situ optical emission spectroscopy (OES) monitors the plasma state and electron temperature, providing fundamental insights into nucleation mechanisms. Density functional theory (DFT) calculations reveal that nitrogen doping optimizes the p -band center of carbon and significantly reduces the energy barrier of the rate-determining step (RDS) (*OH desorption). When applied in both liquid and solid-state flexible zinc-air batteries (FZABs), the Cr 3 C 2 @C ln (N 1.13 )-based cathode delivers exceptional performance, achieving high power densities (230.64 and 164.83 mW·cm −2 , respectively) and remarkable cycling stability. This study offers an efficient strategy for designing high-performance transition metal carbide electrocatalysts through synergistic control of size and electronic structure.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhong Lv,Xiaolu Zhai,Mengtian Cui,Xiangshan Bi,Cun Zhou
Carboxylated modified cotton fabrics via a diazotization reaction followed by in-situ growth of Co/Zn bimetallic MOFs. • The coating surface achieved a separation efficiency of over 99% for heavy-density oil/water mixtures and over 97% for light-density oil/water mixtures. • Degradation of most dyes and antibiotics by light and PMS activation synergistic catalysis. • Active sites of molecular structure and ecotoxicity of degradation products were investigated by DFT and T.E.S.T., respectively. In this paper, a diazotization reaction was first used to introduce carboxyl groups on the surface of cotton fabrics, and then Co/Zn bimetallic metal organic frameworks (MOFs)-based ZIF-67/8 were in-situ grown on the carboxylated cotton fabrics. Subsequently, 3-mercaptopropyltriethoxysilane (MPTES) formed a covalent bond with 10-undecenoic acid (UA) through a photo-initiated thiol-ene click reaction, and after the addition of polymethylhydrosiloxane (PMHS), it formed a strong covalent bond with the hydroxyl groups on cotton fibers through a hydrolysis condensation reaction. Hence, a polymer-functionalized Co/Zn bimetallic MOFs-based superwetting cotton fabric coating surface (PMHS/UA/ZIF-67/8-CF) was obtained. Polymer-functionalized MOFs coatings, exhibiting wettability reversible conversion capability, are favorable for the separation of different types of oil/water mixtures and maintaining excellent separation performance. Furthermore, the Co/Zn bimetallic MOFs exhibited efficient degradation by a dual-path mechanism through synergistic light-driven charge separation and PMS (peroxymonosulfate) activation. It exhibited excellent catalytic degradation properties for dyes such as phenothiazines, xanthenes, and azo compounds, as well as tetracene derivative antibiotics. In addition, the active sites of the molecular structure and the catalytic degradation pathways were investigated using density functional theory (DFT) calculations and liquid chromatography-mass spectrometry (LC-MS) analysis, respectively. Ultimately, the toxicity of methylene blue (MB) and its degradation products was evaluated using the toxicity estimation software tool (T.E.S.T.). This work presents a promising research strategy for environmental wastewater treatment, demonstrating the potential of functional coatings with reversible conversion wettability and properties for degrading organic pollutants. Download: Download high-res image (416KB) Download: Download full-size image
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Journal of Energy Storage
·
2026
·
IF 10.7
Wenji Liang,Mengdi Han,Zhenhua Qin,Jinguang Cai,Yun He,Jianfen Li
Exploring highly active, cost-effective, and long-life non-precious metal-based catalysts for the oxygen reduction/evolution reaction (ORR/OER) is extremely important for renewable energy conversion devices. Herein, a facile approach is proposed to fabricate a FeNi nanoparticles decorated 3D N, S, F tri-doped porous carbon nanoflower/nanotubes electrocatalyst (FeNi@NSFC) by a self-assembly pyrolysis process. The ammonium sulfate not only acts as a N and S source but also facilitates the self-assembly of 2D ZnFeNi-ZIF nanosheets into 3D nanoflowers. Meanwhile, the potassium fluoride serves as a F source and regulates the crystal growth as well as pore structure. The 3D nanoflower/nanotube structure benefits the exposure of reactive species and mass/charge transport. The optimized FeNi@NSFC catalyst achieved outstanding bifunctional catalytic performance with an overpotential gap (0.655 V), which was lower than the Pt/C + RuO 2 catalyst (0.670 V). Theoretical findings also revealed that the introduction of N, S and F atoms could tailor the electronic structure of FeNi nanoparticles, thereby enhancing the catalytic activity for ORR. Therefore, the FeNi@NSFC-assembled Zinc-air batteries (ZABs) delivered a peak power density (156.2 mW cm −2 ), and long-term cycle durability (550 h), surpassing Pt/C + RuO 2 -assembled ZABs. This work demonstrates a promising avenue for developing MOF-derived catalysts with well-defined morphology and multi-atom doping.
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