LANGMUIR
·
2022
·
IF 4.331
Bin Fu,Yingchao Ma,Ruiting Li,Xiaodong Lian,Shenglong Liao,Yapei Wang
In an effort to prevent or minimize icing hazards, techniques and materials for icing inhibition and deicing have always been highly favored throughout human history. This work discovers the integrated anti-icing and deicing effects of poly(styrene-b-butadiene-b-styrene) triblock rubber (SBS) after its easy oxidation in iodine vapor. Iodine oxidation happens on the block of polybutadiene, featured by the conversion of SBS from hydrophobic to amphiphilic and the improved capability of photothermal conversion. The oxidized SBS can serve as a polymer coating, which possesses intriguing abilities to delay the kinetics of icing on its surface and repel the ice under light illumination. According to characterizations of surface chemistry and mechanical performance, iodine oxidation is assumed to involve the processes of iodine coordination to unsaturated bonds, the formation of radical cations as a result of the redox reaction between iodine and unsaturated carbon–carbon bonds, improved light absorption owing to the formation of polyiodide anions, and intermolecular coupling of radical cations. The appearance of polar moieties/species within the oxidized SBS is attributed to the delayed ice nucleation. The significant photothermal capacity in visible and near-infrared windows enables the iodine-oxidized SBS coating to remove the adhered ice by melting under light illumination when the icing process is inevitable, even at an extremely low temperature (−25 °C).
研究领域:
材料科学
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表面化学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Lin Zhou,Na Wang,Yunzhen Chang,Sheng Zhu,Ying Zhang,Wenjing Hou,Yun Zhao,Gaoyi Han
Currently, aqueous rechargeable zinc-iodine (Zn I 2 ) batteries are recognized as promising new energy storage devices due to their significant advantages, including large theoretical capacity, rapid charging and discharging capabilities and high safety. However, the shuttle effect caused by the soluble polyiodide ions leads to low utilization of active iodine and coulombic efficiency (CE). Herein, we use a high-concentration iodine solution as the oxidizing agent to synthesize polypyrrole (PPy/I 2 ) for the first time. Compared with the PPy polymerized by using FeCl 3 as oxidant (PPy/FeCl 3 ), the Zn I 2 battery based on PPy/I 2 cathode demonstrates an extended cycle life (84.2 % after 3800 cycles at 2.0 A g −1 ), high CE (>98 % at 1.0 A g −1 ), and minimal self-discharge (75 % after rest 12 h). The results based on electrochemical testing and characterization indicate that the exceptional performance of PPy/I 2 is primarily attributed to the early insertion of iodine species during the preparation process. This insertion creates reserved space for polyiodide ions, and the positive charge on the main chains of PPy effectively restricts their shuttle during battery operating. Furthermore, due to the ideal shuttle inhibition of PPy/I 2 , the Zn corrosion caused by polyiodide ions is effectively inhibited. The detailed characterizations explore the charge storage mechanism of PPy/I 2 . This research has guiding significance for improving the performance of PPy-based Zn I 2 batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Qi Deng,Fangzhong Liu,Xiongwei Wu,Changzhu Li,Weibin Zhou,Bei Long
The development of aqueous battery with dual mechanisms is now arousing more and more interest. The dual mechanisms of Zn 2+ (de)intercalation and I − /I 2 redox bring unexpected effects. Herein, differing from previous studies using ZnI 2 additive, this work designs an aqueous BiI 3 -Zn battery with self-supplied I − . Ex situ tests reveal the conversion of BiI 3 into Bi (discharge) and BiOI (charge) at the 1st cycle and the dissolved I − in electrolyte. The active I − species enhances the specific capacity and discharge medium voltage of electrode as well as improves the generation of Zn dendrite and by-product. Furthermore, the porous hard carbon is introduced to enhance the electronic/ionic conductivity and adsorb iodine species, proven by experimental and theoretical studies. Accordingly, the well-designed BiI 3 -Zn battery delivers a high reversible capacity of 182 mA h g −1 at 0.2 A g −1 , an excellent rate capability with 88 mA h g −1 at 10 A g −1 , and an impressive cyclability with 63% capacity retention over 20 K cycles at 10 A g −1 . An excellent electrochemical performance is obtained even at a high mass loading of 6 mg cm −2 . Moreover, a flexible quasi-solid-state BiI 3 -Zn battery exhibits satisfactory battery performances. This work provides a new idea for designing high-performance aqueous battery with dual mechanisms.
研究领域:
电化学
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能源材料
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储能技术
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无机化学
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纳米材料
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jingjing Zhao,Zhong Liu,Zhiyong Ji,Xiaowei An,Xiao Du,Fengfeng Gao,Xiaogang Hao,Jun Li
An electrochemically induced bismuth iodine oxide/multiwalled carbon nanotubes/polyvinyl alcohol (BiOI/MWCNTs/PVA) composite membrane electrode with iodide ion trap (I − -trap) was fabricated by prerelease of I − under reduction potential. The I − -trap BiOI/MWCNTs/PVA composite membrane with unique lattice confinement structures was used for the selective extraction of I − in an electrochemically switched ion permselective (ESIP) process. In the ESIP system, the direct uptake and release of I − were realized by applying a cell voltage-pulse potential (CV-PP) coupling circuit on the membranes to switch the oxidation/reduction state. The I − -trap BiOI/MWCNTs/PVA composite membrane exhibited a maximum flux of 8.32 mg·m −2 ·min −1 and superior electrochemical stability. The separation factors of I − /Br − , I − /Cl − , I − /NO 3 − , and I − /SO 4 2− in the mixed solutions were 2.67, 3.71, 3.82, and 6.70 respectively. Therefore, such a novel I − -trap BiOI/MWCNTs/PVA composite membrane could be used in the ESIP system for the selective extraction of I − ions from low concentration solutions.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Bin Qiao,Jing Zhang,Xuhui Li,Xingming Ning,Zhongwei An,Xinbing Chen,Yu Chen,Pei Chen
As a promising energy conversion and storage device, recently, rechargeable zinc-air batteries (ZABs) have developed rapidly, and the exploitation of excellent electrode catalysts to improve the energy efficiency and long-term performance of ZABs has become a focus of current research. Herein, the Co 5.47 N nanocrystals embedded in porous carbon nanofibers (Co 5.47 N PCNFs) were designed to act as a bifunctional electrocatalyst for the oxygen reduction reaction (ORR) and iodide oxidation reaction (IOR), which occur on the electrode in the charging-discharging process of ZABs. The electrochemistry results showed that the ORR activity of Co 5.47 N PCNFs is comparable to the commercial Pt/C electrocatalyst, and the IOR activity and stability are higher than those of the Pt/C electrocatalyst. Importantly, Co 5.47 N PCNFs electrocatalyst endows ZABs with a low charge–discharge voltage difference (0.49 V), a high round-trip energy efficiency (72.1 %), as well as a large specific capacity (791.5 mAh g Zn −1 ), surpassing the performance of Pt/C electrocatalyst. Density functional theory calculation demonstrates that Co 5.47 N PCNFs have lower Gibbs free energy for the formation of IOR intermediate species, thereby displaying outstanding IOR catalytic performance compared to that of Pt/C electrocatalyst. These findings offer crucial insights into the rational design of cobalt nitride-based electrocatalysts for application in ZABs with high energy efficiency.
研究领域:
材料科学
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电化学
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能源存储与转换
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Yong Wang,Shikai Xue,Yuhao Liao,Haiyan Wang,Qiujun Lu,Ningli Tang,Fuyou Du
In this study, Ag/Bi 2 O 3 /Bi 5 O 7 I with s-scheme heterostructures were successfully synthesized in situ by nano-silver modification of CUA-17 and halogenated hydrolysis.The growth rate of Bi 2 O 3 crystals was effectively controlled by adjusting the doping amount of Ag, resulting in the formation of a facet-coupling heterojunctions . Through the investigation of the microstructure and compositional of catalysts, it has been confirmed that an intimate facet coupling between the Bi 2 O 3 (120) facet and the Bi 5 O 7 I (312) facet, which provides robust support for charge transfer. Under visible light irradiation, the AgBOI.3 heterojunction photocatalyst exhibited an outstanding degradation rate of 98.2% for Bisphenol A (BPA) with excellent stability. Further characterization using optical, electrochemical, impedance spectroscopy, and electron spin resonance techniques revealed significantly enhanced efficiency in photogenerated charge separation and transfer, and confirming the s-scheme structure of the photocatalyst. Density functional theory calculations was employed to elucidate the mechanism of BPA degradation and the degradation pathway of BPA was investigated by LC-MS. Finally, the toxicity of the degradation intermediates was evaluated using T.E.S.T software.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yang Wang,Yuzhen Zhang,Huan Li,Yajie Feng,Jiangping Ma,Chaogang Ban,Andrejs Cesnokovs,Xiaoxing Wang,Lujie Ruan,Shaojie Jing,Linyu Cao,Yisen Niu,Yimin Chen,Chonggeng Ma
Contact-electro-catalysis (CEC) offers a promising mechanochemical pathway for harvesting ubiquitous mechanical energy to drive hydrogen evolution. Bismuth oxyhalides are attractive CEC candidates owing to their layered polar structures and strong internal electric fields, yet their performance is limited by weak interactions between surface sites and adsorbates. Here, we combine density functional theory screening with experimental validation to investigate transition-metal-doped Bi 5 O 7 I as vibration-driven hydrogen evolution catalysts. Ten dopants ( M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) were systematically evaluated with respect to doping feasibility, water adsorption, and electronic characteristics. Among them, Fe-doped Bi 5 O 7 I was identified as a representative system offering a favorable balance of activity, abundance, and cost. Guided by theoretical insights, Fe/Bi 5 O 7 I nanorods were synthesized and demonstrated a hydrogen evolution rate of 2004.11 μmol·g −1 ·h −1 under ultrasonic stimuli. Mechanistic analyses further revealed that Fe doping enriches the electronic states near the Fermi level, enhances water adsorption, and reduces reaction barriers, while strain introduced by mechanical stimulation provides additional electronic modulation. This work establishes a theory-assisted framework for designing transition-metal-doped Bi 5 O 7 I catalysts and highlights the potential of CEC as a sustainable approach to hydrogen production.
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Shen Jiafu,Huang Xi,Dai Yu,Zhang Xiaojin,Xia Fan
Low-grade heat is abundant and ubiquitous, but it is generally discarded due to the lack of cost-effective recovery technologies. Ion thermoelectric cells are an affordable and straightforward approach of converting low-grade heat into usable electricity for sustainable power. Despite their potential, ion thermoelectric cells face challenges such as limited Seebeck coefficient and required series integration. Here, we demonstrate that the N-type and P-type conversion of ion thermoelectric cells can be achieved through the phase transition of temperature-sensitive hydrogel containing the triiodide/iodide redox couple. Through the strong interaction between the hydrophobic region of the hydrogel and triiodide, the hydrophobic side selectively captures triiodide and the hydrophilic side repels triiodide, raising the concentration difference of triiodide and thereby increasing the Seebeck coefficient. Specifically, the Seebeck coefficient of the N-type ion thermoelectric cells is 7.7 mV K −1 , and the Seebeck coefficient of P-type ion thermoelectric cells is −6.3 mV K −1 (Δ T = 15 K). By connecting 10 pairs of the N-type and P-type ion thermoelectric cells, we achieve a voltage of 1.8 V and an output power of 85 μW, surpassing the reported triiodide/iodide-based ion thermoelectric cells. Our work proposes a phase transition strategy for the N-P conversion of ion thermoelectric cells, and highlights the prospect of series integrated hydrogel ion thermoelectric cells for low-grade heat harvesting.
研究领域:
材料科学
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能源技术
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化学工程
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产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Jie Chen,Wanfang Li,Ruoxuan Sun,Lei Yan,Shikun Li,Zhuying Xu,Xuezhi Zeng,Yong Hu
Neutral Zn–air batteries offer advantages in dendrite suppression and carbonation resistance, however, their performance is limited by high overpotentials resulting from insulating discharge products and sluggish oxygen kinetics. Herein, a closed-loop iodide-oxygen cycle mechanism for a neutral aqueous Zn–air/iodide hybrid battery (ZAIB), integrating oxygen and iodide redox chemistry, is proposed. A multifunctional electrocatalyst, featuring FeN nanoparticles anchored on a hierarchically porous carbon matrix, is designed to drives oxygen reduction reactions (ORR) and iodide oxidation/reduction reactions (IOR/IRR). This catalyst spatially confines zinc hydroxyacetate dihydrate (ZHA) precipitates within its honeycomb meso-macroporous framework, thereby preserving triple-phase boundaries. During discharge, I – generated from I 3 – reduction enhances the kinetics, thereby increasing discharge voltage. Concurrently, OH – formed during ORR reacts with the electrolyte to produce ZHA. Upon charging, thermodynamically favored low-potential IOR dominates, regenerating I 3 – from I – and decomposing ZHA to release OH – . The released OH – then spontaneously reacts with I 3 – to regenerate I – and evolve O 2 , resulting in a reduced charge voltage. Consequently, the neutral ZAIB achieves a low charge/discharge voltage gap (640.1 mV), high energy efficiency (54.0%), and exceptional stability (>1800 h at 2 mA cm −2 ). This synergistic mediator-catalyst codesign strategy offers a viable pathway to high-performance neutral metal–air systems.
研究领域:
电化学
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储能技术
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材料科学
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电池技术
·
催化
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 31
·25055-25061
·
IF 4.6
Xinrui Luo,Li Tan,Liping Wu,Qiuxia Liu
The use of nano-catalysts to reduce nitroaromatic compounds is a promising wastewater treatment strategy. In this study, melamine foam (MF) is employed as the substrate, and sheet-like bismuth oxide iodide (BiOI) was grown on its surface through a cross-impregnation process involving Bi(NO3)3 and KI solution. As a catalyst, bismuth oxide iodide/melamine foam composite (BiOI/MF) exhibits remarkable catalytic activity and excellent durability in the treatment of continuous flow 4-nitrophenol (4-NP) solutions. The loading capacity of BiOI on a 2 × 2 × 2 cm3 MF substrate is notably low at just 0.13 g, yet it can completely reduce 50 mL 4-NP solution (0.37 mmol L−1) within 32 minutes. After six consecutive cycles, the catalyst maintained a conversion efficiency of over 90%, with the total treatment amount for 4-NP reaching 1.49 × 10−2 mmol. Furthermore, BiOI/MF also exhibited high catalytic reduction activity towards other organic pollutants, such as methylene blue and methyl orange solutions. In this study, we propose an efficient and cost-effective composite catalyst that offers technical guidance for the practical treatment of wastewater and sewage.
研究领域:
环境科学
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催化
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纳米技术
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化学工程
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水处理技术
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Dequan Huang,Cuihong Zeng,Menghao Liu,Xiaorong Chen,Yahao Li,Sijiang Hu,Qichang Pan,Fenghua Zheng,Qingyu Li,Hongqiang Wang
A lithium metal battery (LMBs) is an excellent battery system for advanced electrochemical energy storage. However, the growth of lithium dendrites, the accumulation of inactive lithium, and the side reactions between lithium metal and electrolytes limit the cycling stability of LMBs. Herein, we introduce KI additive into lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/ether-based electrolyte and lithium hexafluorophosphate (LiPF 6 )/ester-based electrolyte for cycling stability improvement of LMBs. Cu-mesh@Ag||Li half-cell with 0.01 M KI additive exhibits a Coulombic efficiency as high as 98.8 % over 200 cycles. The improved performance due to the electrostatic shielding effect formed by K + at low concentration and the rapid recovery of inactive lithium by iodine redox. The corresponding Li||Li symmetrical cell shows an outstanding lifespan of 1400 h at 1.0 mA cm −2 with 1.0 mAh cm −2 . Meanwhile, in the 1 M LiTFSI + 0.01 M KI electrolyte, the Cu-mesh@Ag-Li||LiFePO 4 (LFP) full cell holds capacity retention of 91.7 % over 800cycles at 2.0 C, the Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) full cell possesses much better capacity retention of 54 % after 500 cycles at 1.0 C. This work offers a cost-effective proposal to improve application potential with the electrolyte engineering of rechargeable Li metal batteries.
研究领域:
电化学
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材料科学
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能量存储
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jianmei Jiang,Yaoming Xiao,Wenjing Yang,Chao Wen,Biye Liu,Lidan Wang,Yunpeng Xu,Xue Zhang,Qixin Zhuang,Jinguo Lin,Zisheng Su,Jeng-Yu Lin
Although the efficiency of perovskite solar cells (PSCs) keeps breaking new records, their stability and cost are still limited by using the conventional hole transport material of 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD). Herein, we use 3,4-ethylenedioxythiophene (EDOT) as a solubilizer to enhance the dissolution of lithium bis(trifluoromethane)sulfonylimide (Li-TFSI) and reduce the 4-tert-bultypyridine (TBP) dosage. Then, EDOT undergoes in situ oxidative polymerization to generate PEDOT by an oxidizing agent of iodine (I2). Moreover, I2 can also accelerate the oxidation of Spiro-OMeTAD. Therefore, the generated PEDOT can synergistically enhance hole transport capability with the oxidized Spiro-OMeTAD, and the generated I– ions can compensate for the I vacancies and inhibit the migration of I– in the perovskite film, resulting in an enhanced stability and efficiency of PSCs. A PSC based on the composite hole transport system achieves a power conversion efficiency (PCE) of 24.79%. Moreover, the PSC retains 92% of its initial PCE for over 2000 h under ambient conditions of 25 °C and 35% relative humidity. Furthermore, the quantities of Spiro-OMeTAD and TBP have, respectively, decreased by 24.9 and 37.5% in the composite hole transport system, thereby lowering the production cost of the PSC and facilitating its industrialization development.
研究领域:
材料科学
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光伏技术
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高分子化学
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纳米技术
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）