Nature Communications
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2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Wu Han,Fu Zhanzhao,Chang Jiangwei,Hu Zhiang,Li Jian,Wang Siyang,Yu Jingkun,Yong Xue,Waterhouse Geoffrey I. N.,Tang Zhiyong,Chang Junbiao,Lu Siyu
Designing efficient acidic oxygen evolution catalysts for proton exchange membrane water electrolyzers is challenging due to a trade-off between activity and stability. In this work, we construct high-density microcrystalline grain boundaries (GBs) with V-dopant in RuO 2 matrix (GB-V-RuO 2 ). Our theoretical and experimental results indicate this is a highly active and acid-resistant OER catalyst. Specifically, the GB-V-RuO 2 requires low overpotentials of 159, 222, and 300 mV to reach 10, 100, and 1500 mA cm -2 geo in 0.5 M H 2 SO 4 , respectively. Operando EIS, ATR-SEIRAS FTIR and DEMS measurements reveal the importance of GBs in stabilizing lattice oxygen and thus inhibiting the lattice oxygen mediated OER pathway. As a result, the adsorbate evolution mechanism pathway becomes dominant, even at high current densities. Density functional theory analyses confirm that GBs can stabilize V dopant and that the synergy between them modulates the electronic structure of RuO 2 , thus optimizing the adsorption of OER intermediate species and enhancing electrocatalyst stability. Our work demonstrates a rational strategy for overcoming the traditional activity/stability dilemma, offering good prospects of developing high-performance acidic OER catalysts.
研究领域:
材料科学
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电化学
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催化科学
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Shifan Zhu,Yicheng Tang,Yuqiao Wang
Delta manganese dioxide (δ-MnO 2 ) has emerged as a promising material for electrochemical energy storage due to its layered structure and high theoretical capacity. However, its practical application is hindered by poor rate performance and structural instability caused by low electronic conductivity and Jahn-Teller distortion. In this study, we demonstrate a vanadium-doped δ-MnO 2 composite anchored on exfoliated graphene (V-MnO 2 @EG) via a one-step electrodeposition method for planar micro-supercapacitors (PMSCs). Vanadium doping modulates the micromorphology of δ-MnO 2 from nanoflower to a coral-like architecture, enhancing specific surface area (125.84 m 2 g −1 vs. 95.86 m 2 g −1 for pristine MnO 2 @EG) and electrolyte diffusion kinetics. Density functional theory (DFT) calculations reveal that V-doping introduces oxygen vacancies, suppresses Jahn-Teller distortion, and improves electronic conductivity and Li + adsorption energy. The V-MnO 2 @EG electrode delivers a remarkable areal capacitance of 441.2 mF cm −2 at 1 mA cm −2 and retains 97.67 % capacitance after 100,000 cycles. Ex-situ characterizations confirm reversible Li + intercalation/deintercalation as the charge storage mechanism. This work provides a rational strategy for designing high-performance manganese oxide-based micro-energy storage devices.
研究领域:
材料科学
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电化学
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高影响因子
ENVIRONMENTAL POLLUTION
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2025
·
IF 7.3
Qi Huang,Xiaohu Jin,Zirui Hu,Ziwen Zhong,Yitao Cai,Qian Yao,Xiaofei Li,Xueqin Tao,Zhi Dang,Guining Lu
Antimony (Sb) pollution is becoming a non-negligible issue due to its toxic and carcinogenic properties. In mining areas, jarosite is a main host mineral for Sb(V), and its transformation may seriously influence the fate of Sb. In this study, we examined the transformation of Sb(V)-coprecipitated jarosite in the presence of oxalic acid (OA) and Desferrioxamine B (DFOB), and explored the resulting repartition of Sb. Results showed that OA and DFOB retarded jarosite dissolution but promoted Fe(III) and Sb(V) release, playing a combined role in this retardation and promotion. In treatment without OA or DFOB, jarosite transformed into hematite and goethite. In DFOB-only systems, DFOB did not change the jarosite transformation pathway; goethite and hematite were still the dominant products, and aqueous Fe(III)-DFOB complexes were formed. In OA-only systems, the re-adsorption of aqueous Fe(III)-OA complexes on the mineral surface may result in another recrystallization pathway, forming goethite. In OA-DFOB systems, DFOB competed with OA for Fe(III), forming Fe(III)-DFOB complexes and delayed OA-induced jarosite transformation into goethite. By the end of all reactions, more than 99.94 % of total Sb was retained by neo-formed secondary Fe(III) minerals. OA drove more Sb to become phosphate-extractable, and DFOB drove the above phosphate-extractable Sb into poorly crystalline phases or residual phases.
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APPLIED SURFACE SCIENCE
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2025
·
IF 6.9
Long Xie,Yaoyong Dong,Hui Ling,Zhenhua Xiang,Bei Long,Jingwei Wang,Lei Zhao,Xiao Zhou,Wenyuan He,Xuejun Zheng
Herein, we report the rational balancing of hydrogen adsorption/desorption dynamics by employing a synergistic Co and V dual-doping strategy to enhance the hydrogen evolution reaction (HER) performance of MoS 2 . The Co and V dual-doping MoS 2 (Co, V-MoS 2 ) was successfully synthesized in situ on carbon cloth (CC) substrates via a one-pot hydrothermal route, and the XRD, Raman, TEM, XPS, EDS and ICP characterizations validate the substitutional doping of Co and V into the MoS 2 lattice. The optimized Co, V-MoS 2 /CC exhibits significantly enhanced HER performance, requiring only 220.0 mV overpotential to reach −100 mA/cm 2 with a 61.9 mV/dec Tafel slope, surpassing both the Co/V mono-doped MoS 2 /CC and undoped MoS 2 /CC. Moreover, the polarization curve of Co, V-MoS 2 /CC exhibits a negligible potential decay of 8.4 mV at 50 mA/cm 2 after 3000 repeated cyclic voltammogram cycles, demonstrating superior durability. DFT calculations reveal that synergistic Co and V dual-doping in MoS 2 can balance the hydrogen adsorption/desorption kinetics at S sites near dopants, thereby optimizing the hydrogen adsorption free energy and accelerating the charge transfer, thus achieving far super HER performance. Our balancing hydrogen adsorption/desorption strategy enabled by Co, V dual-doping provides a promising avenue for improving the HER performance of TMDs-based electrocatalysts.
研究领域:
材料科学
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电化学
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催化
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能量存储与转换
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纳米材料
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高影响因子
Materials Today
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2025
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IF 22
Liang Li,Tao Yang,Kaixiang Ren,Xinchun Song,Shilin Wu,Hai-Wen Li,Zhipeng Jiang,Mengjun Sun,Yongtao Li
Lithium-LiNi 0.5 Mn 1.5 O 4 (LNMO) batteries are considered promising candidates for high-energy–density storage due to their high operational voltage and low cost. However, existing electrolytes typically fail to balance high-voltage stability with electrode compatibility, thereby limiting their performance under practical conditions. In this study, we present a synergistic inhibition engineering in which silyl additives—triethylsilyl trifluoromethanesulfonate (TESOTf) and tris(trimethylsiloxy)boron (TMSB)—are incorporated into a conventional carbonate electrolyte, leading to stable cycling of Li-LNMO batteries at voltages as high as 4.9 V. Through in situ techniques and theoretical simulations, we demonstrate that TMSB immobilizes free PF 6 − ions in the electrolyte, while TESOTf preferentially consumes trace amounts of water, thereby shifting the hydrolysis reaction pathway of PF 6 − and reducing side reactions at the cathode. Electrochemical tests show that the addition of small quantities of TESOTf and TMSB significantly enhances the rate capability (10C for 85.2 mAh g −1 ), cycling stability (5C for 500 cycles), and high-temperature performance (60 °C, 5C for 300 cycles) of Li-LNMO cells. More importantly, a practical 3 Ah Li-LNMO pouch cell containing these additives demonstrated stable cycling under practical conditions (20 mg cm −2 , 20 μm Li, 2 g Ah −1 ), achieving an energy density exceeding 300 Wh kg −1 .
研究领域:
电化学
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能源材料
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电池技术
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界面化学
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功能材料
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高影响因子
ACS Applied Energy Materials
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2024
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IF 5.4
Leshuai Qiao,Yang Chen,Xuanxuan Zhang,Xiangxin Cheng,Wanfu Liang,Yuyu Li,Jingchao Chai,Ming Xie,Dianbo Ruan,Zhihong Liu
Water-based binders in lithium-ion batteries have garnered increasing attention owing to their environmental benignity and cost effectiveness. In this research, a waterborne poly(lithium acrylate-co-acrylonitrile) copolymer, P(LiAA-AN), was prepared and utilized as a high-performance binder for 4.5 V LiCoO2 in a lithium-ion battery. This copolymer binder integrates characteristics of both polyacrylic lithium and polyacrylonitrile. It has the ability to compensate for additional Li ions and engage in the formation of a stable cathode solid electrolyte interface (CEI) on the surface of 4.5 V LiCoO2. Consequently, in comparison with poly(vinylidene fluoride) (PVDF) and LiPAA binders, the water-based P(LiAA-AN) binder leads the 4.5 V LCO/Li battery to superior rate performance and high cycle stability. When the cell was cycled under a current density of 0.5 C (1 C = 185 mAh g–1) and a cutoff voltage of 3.0–4.5 V (vs Li+/Li), a high capacity retention ratio of 91.5% was achieved after 200 cycles. In addition, the P(LiAA-AN) binder demonstrates an excellent electrolyte absorption and a reduced charge transfer impedance. These results substantiate the effectiveness of the P(LiAA-AN) water-based binder in enhancing the electrochemical performance of the high-voltage LiCoO2 cathode.
研究领域:
材料科学
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电化学
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能源存储
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高影响因子
Nano-Micro Letters
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2025
·Vol. 17
·期 1
·1-20
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IF 36.3
Mu Yongbiao,Liao Zifan,Chu Youqi,Zhang Qing,Zou Lingfeng,Yang Lin,Feng Yitian,Ren Haixiang,Han Meisheng,Zeng Lin
High-voltage lithium (Li) metal batteries (LMBs) face substantial challenges, including Li dendrite growth and instability in high-voltage cathodes such as LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811), which impede their practical applications and long-term stability. To address these challenges, tris(pentafluorophenyl)borane additive as an electron acceptor is introduced into an ethyl methyl carbonate/fluoroethylene carbonate-based electrolyte. This approach effectively engineers robust dual interfaces on the Li metal anode and the NCM811 cathode, thereby mitigating dendritic growth of Li and enhancing the stability of the cathode. This additive-driven strategy enables LMBs to operate at ultra-high voltages up to 4.7 V. Consequently, Li||Cu cells achieve a coulombic efficiency of 98.96%, and Li||Li symmetric cells extend their cycle life to an impressive 4000 h. Li||NCM811 full cells maintain a high capacity retention of 87.8% after 100 cycles at 4.7 V. Additionally, Li||LNMO full cells exhibit exceptional rate capability, delivering 132.2 mAh g −1 at 10 C and retaining 95.0% capacity after 250 cycles at 1 C and 5 V. As a result, NCM811||graphite pouch cells maintain a 93.4% capacity retention after 1100 cycles at 1 C. These findings underscore the efficacy of additive engineering in addressing Li dendrite formation and instability of cathode under high voltage, thereby paving the road for durable, high-performance LMBs.
研究领域:
材料科学
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电化学
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PubMed
高影响因子
Advanced Energy Materials
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2024
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IF 24.4
Yu Chen,Jiajun He,Chengwei Ye,Shaochun Tang
Evaporative hydrovoltaic generators hold significant potential for alleviating water-energy crisis, but low output voltage configurations due to the slow phase transition rate of water molecules and the intricate nature of integration limit their applications. Herein, a lotus-inspired interfacial evaporation-driven hydrovoltaic generators (IEHVG) is developed for efficient generation of water vapor and electricity from seawater instead of freshwater and achieves an ultrahigh voltage output higher than 100-volt level through forested IEHVG integration. The biomimetic hydrogel is developed with specific liquid transport channels, graphene quantum dots/MXene nanocomposites, and gradient hydrophobic interface for highly enhanced photothermal evaporation and electricity generation by mimicking the transpiration process of a “stems-leaves of lotus”. The synergistic thermodiffusion effect leads to the output power density of IEHVG reaches up to 45.6 µW cm −2 and can power electronic devices or charge commercial supercapacitors. The freshwater-electricity cogeneration integrated system consisting of 192 IEHVG units can harvest a record-breaking voltage reaching 105 V and a high freshwater harvesting rate up to 2.0 L m −2 h −1 from seawater in a well-lit outdoor area. This work demonstrates that IEHVG offers a novel concept for modular freshwater and high-voltage power sources access on offshore work platforms.
研究领域:
能源工程
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材料科学
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环境科学
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纳米技术
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高影响因子
Carbon Energy
·
2024
·Vol. 6
·期 9
·e535
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IF 19.5
Zhimin Niu,Yan Gao,Tianhui Wu,Fei Zhang,Ran Zhao,Zijia Chen,Yiming Yuan,Tifeng Jiao,Jianmin Gu,Li Lu,Desong Wang
Rechargeable neutral aqueous zinc−air batteries (ZABs) are a promising type of energy storage device with longer operating life and less corrosiveness compared with conventional alkaline ZABs. However, the neutral ZABs normally possess poor oxygen evolution reactions (OERs) and oxygen reduction reactions performance, resulting in a large charge–discharge voltage gap and low round-trip efficiency. Herein, we demonstrate a sunlight-assisted strategy for achieving an ultralow voltage gap of 0.05 V in neutral ZABs by using the FeOOH-decorated BiVO 4 (Fe-BiVO 4 ) as an oxygen catalyst. Under sunlight, the electrons move from the valence band (VB) of Fe-BiVO 4 to the conduction band producing holes in VB to promote the OER process and hence reduce the overpotential. Meanwhile, the photopotential generated by the Fe-BiVO 4 compensates a part of the charging potential of neutral ZABs. Accordingly, the energy loss of the battery could be compensated via solar energy, leading to a record-low gap of 0.05 V between the charge and discharge voltage with a high round-trip efficiency of 94%. This work offers a simple but efficient pathway for solar-energy utilization in storage devices, further guiding the design of high energy efficiency of neutral aqueous ZABs.
研究领域:
材料科学
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能源存储技术
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电化学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Jinping Mu,Aijia Wei,Xiaohui Li,Rui He,Lijing Sun,Peizhao Liu,Xue Bai,Lihui Zhang,Xi Zhang,Zhenfa Liu,Jing Gao
Tris (trimethylsilyl) phosphate (TMSP) and tris(2,2,2-trifluoroethyl) phosphate (TTFP) was added to carbonate solvent-based electrolytes as dual-additives to enhance the performance of LiNi 0·5 Mn 1·5 O 4 (LNMO). The X-ray photoelectron spectroscopy results revealed that both TMSP with high oxidation ability and TTFP with high oxidation resistance participated in the formation of cathode–electrolyte interphase (CEI) films. Electrochemical impedance spectroscopy confirmed that the constructed CEI films had excellent electronic insulation and ionic conductivity , reducing the interfacial impedance of the LNMO electrode, and improving the electrochemical performance of LNMO/Li half-cells and LNMO/Li 4 Ti 5 O 12 full-cells. As measured by the nuclear magnetic resonance , the incorporation of TMSP and TTFP significantly reduced the HF content in the electrolytes. Therefore, both LNMO/Li half-cells (500 cycles with 95.7% capacity retention) and LNMO/Li 4 Ti 5 O 12 full-cells (200 cycles with 79.9% capacity retention) displayed higher cycling stabilities at 5 C owing to the synergistic effect of TMSP and TTFP. In comparison, capacity retentions of ∼76.5% after 500 cycles and ∼37.2% after 200 cycles were respectively achieved for the LNMO/Li half-cells and LNMO/Li 4 Ti 5 O 12 full-cells with the standard electrolyte at 5 C. This study provides strong evidence that additive combinations can improve the electrochemical performance of high-energy and high-voltage cathode materials .
研究领域:
材料科学
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电化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Kaige Dong,Yuhang Cheng,Mengmeng Jia,Sakil Mahmud,Manyu Deng,Zhuoran Yi,Weiting Wang,Yimeng Feng,Dahao Lian,Gaosheng Zhang,Zhu Xiong
As (V) poses significant environmental and health risks due to its toxicity, making efficient wastewater treatment technologies essential. In this study, we introduce a novel composite material: MOF-like zirconium (Zr)-doped Prussian blue (PB) analogs decorated on polytetrafluoroethylene microporous membranes (Zr-PBAs x -PDA/PEI-M) for As (V) adsorption. Comprehensive characterization techniques, confirmed the successful incorporation of Zr into PB crystals and its growth on the membrane surface through PDA/PEI interlayers. We systematically explored the effects of varying Fe-Zr modification ratios, finding that Zr-PBAs 3 -PDA/PEI-M (Fe: Zr = 2:3) exhibited the optimal performance for As (V) removal and adsorption capacity, with a more intact and densely distributed crystal structure. It demonstrated that Zr-O bonding plays a crucial role in the adsorption mechanism, forming a double-dentate mononuclear structure with As (V). Moreover, the Zr-PBAs 3 -PDA/PEI-M’s adsorption capacity of As (V) was comprehensively assessed by key factors such as temperature, pH, operating pressure, natural organic matter (NOM), and initial As (V) concentration during wastewater treatment, which exhibited the excellent resistance to interference in removing As (V). Remarkably, Zr-PBAs 3 -PDA/PEI-M retained its high adsorption capacity across three cycles of reuse, highlighting its excellent stability and reusability. When tested on simulated Pearl River water samples containing As (V), the material achieved filtrate concentrations well below 0.5 mg/L, in compliance with China’s Comprehensive Wastewater Discharge Standard. This study presents a promising solution for efficient As (V) removal in wastewater, offering practical insights into its potential application for real-world water treatment challenges.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2024
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IF 8
Na Liu,Ruili Gao,Jingjing Guo,Longwei Fu,Bin Xue,Kun Ma,Chen Lin
The environmental impact of arsenic (As) pollution has been a focal point within environmental science. In arsenic-polluted saline-alkali environment, the addition of exogenous biochar can affect the morphological transformation of As both through direct and indirect mechanisms, with calcium ions (Ca(II)) playing a crucial role. This study investigates the immobilization mechanisms of undissolved biochar (UOB) and dissolved biochar (DOB) on As(V) in the absence and presence of Ca(II) under alkaline conditions and aerobic atmosphere. While UOB and DOB alone are insufficient for As(V) immobilization, their combined action in the presence of Ca(II) achieves remarkable immobilization rates of 91.9% and 98.1%, respectively. Precipitation of calcium arsenate is identified as the primary immobilization pathway in both the UOB-Ca(II)-As(V) and DOB-Ca(II)-As(V) systems. Furthermore, Ca(II) acts as a mediator for As(V) immobilization through the formation of ternary UOB/DOB-Ca-As complexes, which are corroborated by Density Functional Theory (DFT) analysis from a microscopic perspective. Notably, the synergistic immobilization of As by DOB and newly generated CaCO 3 in DOB-Ca(II)-As(V) system is highlighted. Additionally, the increase in Ca(II) concentration (0–100 mM) and solution pH (9.0–12.0) both significantly enhance the immobilization of As(V). An increase in the dosage of UOB (0.4–4 g/L) reduces the immobilization of As(V), while effect of the DOB concentration is insignificant. This study provides new insights into how the release of two biochar fractions into a typical Ca(II)-rich saline-alkali environment may alter the fate and transport of As species.
研究领域:
环境科学
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化学
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土壤学
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PubMed
高影响因子
危险品化学品经营许可证（带存储）