CARBON
·
2023
·
IF 10.9
Ting Xu,Hong Huang,Tianrui Lu,Zheng-Jun Wang,Shaojun Zhu,Huile Jin,Jun Li,Xiaochun Zhou,Jing-Jing Lv,Shun Wang
Due to the recent increase in carbon-based gas diffusion layer (GDL) usage for high-rate electrochemical reactors, the study on mitigating anodic corrosion associated with the GDL is imperative. In this study, the anodic corrosion of a high-rate electrochemical flow cell was evaluated using an on-line universal gas chromatography protocol with iridium oxide supported GDL (IrO 2 /GDL) as a model electrode, and it could be evidently alleviated in the alkaline media (1 M KOH) with an inert gas (Ar or N 2 ) environment within current densities of 500 mA cm −2 . In addition, the quantitative CO 2 /CO formation rate and Faradaic efficiencies results, along with the qualitative hydrophobicity maintenance ability of the anode, revealed that the anodic oxidation reaction could be efficiently suppressed in the carbon support samples with both high graphitization and good oxygen evolution reaction (OER) activity, such as the multi-walled carbon nanotubes. Therefore, further modification of the carbon-based GDL itself may help to prevent its corrosion above 500 mA cm −2 . This work is important for tracing the origin of electrocatalysis deactivation and directing the design of carbon materials for the future electrodes that involving the GDL on a high-rate electrochemical reactor.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Chuqiang Huang,Jinxing Lu,Caifen Zeng,Kai Zhao,Siyuan Yang,Binglu Deng,Yunpeng Liu
Electrochemical valorization of glycerol from industrial biodiesel production offers an alternative route for the supply of high-value chemicals and clean fuel. Even more desirable is that glycerol electrooxidation can be integrated with H2 production for energy-efficient electrolysis. Herein, we present an electrodeposited ternary CuCoMo amorphous alloy as a highly efficient anode catalyst. Systematic electrochemical studies confirm that the CuCoMo alloy allows an attractive performance for glycerol electrooxidation with a low overpotential (100 mA cm–2 at 1.31 V vs. RHE), along with a satisfactory Faraday efficiency of 98.17% and yield of 92.27% toward formate products. The electrochemically generated Cu2+ and Co3+ oxide species of the alloy are responsible for oxidizing glycerol, wherein Mo atoms are induced to regulate the d-band center, thereby synergistically favoring the C–C bond cleavage for formate production. Notably, the Faraday efficiency in the flow cell of the integrated system remains about 90% during the continuous upgrading of glycerol to formate and H2, significantly reducing the electricity consumption. This work not only highlights the potential of ternary alloy catalysts for selective glycerol electrooxidation but also presents a convenient avenue for low-cost and sustainable energy conversion.
研究领域:
电化学
·
催化
·
能量转换
·
材料科学
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Miao Wang,Yating Gu,Jiarui Li,Huaizhu Wang,Mengfei Zhu,Junchuan Liang,Zuoxiu Tie,Jing Ma,Zhong Jin
In this work, we present a scalable in-situ growth strategy for self-assembling a carbon felt supported Bi 2 O 3 fractal nanostructure (f-Bi 2 O 3 /CF), enabling superior performance towards electrocatalytic CO 2 -to-formate conversion with an optimal Faradaic efficiency of 95.1% at −0.9 V ( vs . RHE) in flow cell. More impressively, the current density reaches an industrially relevant 235.7 mA cm −2 and remains a high FE formate of 87.7%. The enhanced catalytic activity of the f-Bi 2 O 3 /CF model is attributed to the increased adsorption energy of OCHO* intermediate by changing the surface charge distribution according to DFT calculations. Using the aforementioned method, a series of other CF supported metal oxide catalysts (i.e., CuO , In 2 O 3 , and SnO 2 ) are easily obtained. A brief techno-economic analysis (TEA) model demonstrates the economic potential of electrocatalytic hydrogenation of CO 2 into formate in flow cell. Our findings offer a promising pathway for the fabrication of stable and accessible fractal structure, applicable to a wide range of scenarios.
研究领域:
电化学
·
纳米材料
·
能源化学
·
环境催化
·
可持续能源
·
二氧化碳利用
·
电催化转化
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2025
·Vol. 37
·期 7
·e70025
·
IF 2.3
Xiao-Lin Liu,Hao Huang,Heng-Yan Zheng,Yu-Han He,Zhao-Hui Wang
A compact and enclosed optically transparent spectroelectrochemical flow cell was designed specifically for in situ sum frequency generation (SFG) measurements at the charged solid/liquid interface. This thin-layer analysis cell allows the measurement of films on reflective metallic surfaces through a micrometer layer of solution. The cyclic voltammetry and SFG spectrum from an Au working electrode were used to demonstrate the electrochemical and spectroscopic capabilities of the cell. The potential dependent structural changes of the Au electrode and surface molecules were tested to prove the feasibility of the cell for in situ spectroscopy of the electrode processes. The development of this compact spectroelectrochemical flow cell would facilitate future operando studies employing SFG measurements at solid/liquid interfaces.
研究领域:
电化学
·
光谱学
·
材料科学
·
表面科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Long Cheng,Rong Wang,Ya Wang,Xingxia Yang,Yanxi Deng,Junhua Li
Formic acid (HCOOH) production from direct CO 2 electrolysis is suggested to be one of the most economically viable products. However, its commercial viability remains challenging in highly active and selective electrocatalysts. Here, we report that palladium (Pd) doping has a profound positive impact on the electrocatalytic activity of bismuth oxide (Bi 2 O 3 ). The introduction of Pd increases the current density and Faradaic efficiency of HCOOH (FE HCOOH ) in flow cell system. As a result, the optimized Pd-Bi catalyst exhibits a FE HCOOH of 99.1 % at −0.7 (V vs RHE). Operating experimental studies coupled with theoretical calculations reveal that the Pd modified active sites exhibit near-optimal binding energy for the key *OCHO intermediate, which is more conducive to the generation of formic acid. Furthermore, the use of an asymmetric low-frequency pulsed strategy stabilizes the active sites, ensuring sustained catalytic performance. This study highlights the potential of Pd-doped Bi 2 O 3 as a promising candidate for efficient and selective CO 2 electroreduction to formic acid.
研究领域:
催化化学
·
电化学
·
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Kai Zhu,Zihan Lin,Xinyi Bai,Fangfang Chang,Qing Zhang,Xiaolei Wang,Zhengyu Bai
Electrocatalytic reduction reaction of CO2 (CO2RR) into value-added multicarbon (C2+) products represents a sustainable strategy for mitigating greenhouse gas emissions and enhancing the production of high-value chemicals. Cu-based catalysts are optimal for the CO2RR, facilitating the generation of C2+ products such as ethanol, which have significant industrial applications. However, converting CO2 to C2+ products remains a great challenge, necessitating the simultaneous achievement of high current density, Faradaic efficiency (FE), and operational stability for industrial-scale implementation. Herein, we prepared Cu/Cu2O catalysts with diverse morphologies and the ratio of the Cu+/Cu interface, which was rectified by regulating the interactions between the active interface and the intermediate (*CO). The electrochemical analysis demonstrated that reconstructed Cu/Cu2O nanodendrites with dominant grain boundaries exhibited remarkable performance in generating C2+ products, achieving a Faradaic efficiency (FE) of 71.8%, including 49.7% FE of ethanol and a substantial partial current density of 390.0 mA cm–2 within the flow cell. In situ spectroscopy characterization and theoretical calculations revealed that the increased ethanol selectivity originated from the rectification of the Cu/Cu2O interface by the *CO intermediate, which accelerated H2O dissociation, reduced the free energy for *CO hydrogenation to *COH, and facilitated asymmetric *CO-*COH coupling to preferentially reduce CO2 to ethanol. This study provides profound insights into the C–C coupling pathways and sheds light on the rational design of ethanol-oriented electrocatalysts, contributing to sustainable chemical synthesis and energy utilization.
研究领域:
电催化
·
能量转换
·
材料科学
·
环境化学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2025
·
IF 5.3
Yan Fang,Chengcheng Cai,Hiromi Yamashita,Xufang Qian,Yixin Zhao
Electrocatalytic CO 2 reduction reaction (CRR) to produce value-added chemicals offers a sustainable strategy to address energy crisis and climate change. However, the conventional CRR is always coupled with the anodic oxygen evolution reaction (OER), suffering from large overpotential, and high energy consumption. To overcome this, we proposed an alternative system by pairing CRR with the electrocatalytic oxidation of ethylene glycol (EGOR), a product derived from the depolymerization of polyethylene terephthalate (PET) plastic waste. This novel coupled system enabled the simultaneous production of formate on both electrodes, achieving the dual utilization of plastic waste and CO 2 . In this study, we developed a commercially viable system combining a robust NiOOH electrocatalyst synthesized through a facile electrodeposition for EGOR with a low-cost Bi 2 O 3 electrocatalyst for CRR. The NiOOH electrocatalyst achieved Faradaic efficiencies over 88 % for EG oxidation into formate within a broad potential window (1.4–1.8 V RHE ), while Bi 2 O 3 delivered Faradaic efficiencies more than 90 % for CO 2 -to-formate conversion within −0.8 to −1.2 V RHE . When integrated in a two-electrode configuration, the EGOR/CRR system produced formate at both electrodes with Faradaic efficiencies above 85 % across a wide cell voltage (2.0–2.6 V), requiring a ∼300 mV lower cell potential compared to the OER/CRR system. This coupled system reached commercial-level current densities above 200 mA cm −2 or 400 mA cm −2 at 3.0 V when implemented in the flow cell or the MEA cell, respectively. These results demonstrated the potential to use waste-derived reactants and commercially accessible eletrocatalytsts to realize energy-efficient and scalable conversion into formate.
研究领域:
电化学
·
催化
·
环境科学
·
能量转换
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Plant Science
·
2017
·
IF 4.291
Song Song,Chang Jian,Ma Chongjun,Tan Yan-Wen
Plant-hormone-initiated signaling pathways are extremely vital for plant growth, differentiation, development, and adaptation to environmental stresses. Hormonal perception by receptors induces downstream signal transduction mechanisms that lead to plant responses. However, conventional techniques—such as genetics, biochemistry, and physiology methods—that are applied to elucidate these signaling pathways can only provide qualitative or ensemble-averaged quantitative results, and the intrinsic molecular mechanisms remain unclear. The present study developed novel methodologies based on in vitro single-molecule fluorescence assays to elucidate the complete and detailed mechanisms of plant hormone signal transduction pathways. The proposed methods are based on multicolor total internal reflection fluorescence microscopy and a flow cell model for gas environment control. The methods validate the effectiveness of single-molecule approaches for the extraction of abundant information, including oligomerization, specific gas dependence, and the interaction kinetics of different components.
研究领域:
植物生物学
·
分子生物学
·
生物物理学
·
细胞信号传导
✓ 已验证
DOI
PubMed
高影响因子
Chemical Science
·
2024
·Vol. 15
·期 24
·9173-9182
·
IF 7.6
Jiye Feng,Wenbiao Zhang,Danni Shi,Yingshuai Jia,Yi Tang,Yuying Meng,Qingsheng Gao
Multi-phase interfaces are promising for surmounting the energy barriers of electrochemical CO2 reduction involving multiple electron transfer steps, but challenges still remain in constructing interfacial micro-structures and unraveling their dynamic changes and working mechanism. Herein, highly active Ag/Cu/Cu2O heterostructures are in situ electrochemically restructured from Ag-incorporating HKUST-1, a Cu-based metal–organic framework (MOF), and accomplish efficient CO2-to-C2H4 conversion with a high faradaic efficiency (57.2% at −1.3 V vs. RHE) and satisfactory stability in flow cells, performing among the best of recently reported MOFs and their derivatives. The combination of in/ex situ characterizations and theoretical calculations reveals that Ag plays a crucial role in stabilizing Cu(I) and increasing the CO surface coverage, while the active Cu/Cu2O interfaces significantly reduce the energy barrier of C–C coupling toward the boosted ethylene production. This work not only proves MOFs as feasible precursors to derive efficient electrocatalysts on site, but also provides in-depth understanding on the working interfaces at an atomic level.
研究领域:
材料科学
·
电化学
·
催化
·
能量转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Reaction Chemistry & Engineering
·
2024
·
IF 3.4
Qifeng Yang,Liping Liang,Ning Xu,Yang Li,Zhihui Wang,Dadong Shen,Yiming Mo
Electroorganic synthesis has received significant attention due to its environmentally friendly nature, offering the potential to replace traditional hazardous chemical production routes. However, an in-depth technoeconomic analysis (TEA) of electrosynthesis technology is still necessary to objectively assess the economic viability of this technology as an alternative to the traditional chemical synthesis. In this study, we used the cerium-mediated electrosynthesis of 2-methyl-1,4-naphthoquinone (2-MNQ, also known as vitamin K3) as a case study. The process development was conducted in both small-scale and large-scale electrochemical flow cells with 6.25 cm2 and 208 cm2 electrode sizes, respectively, to investigate the process scalability. Under the optimal conditions, a 66% yield was achieved for 2-MNQ with 90% Faradaic efficiency at 50 mA/cm2 current density. We performed a comprehensive TEA on the key factors influencing electroorganic synthesis, including current density, electrode cost and lifespan, membranes, and electricity price. Furthermore, considering ongoing technological advancements in electrodes, membranes, and renewable electricity generation, we analyzed the trend of future projected cost reductions for electrosynthesis processes.
研究领域:
化学工程
·
电化学
·
可持续化学
·
工艺开发
·
经济分析
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 3
·788-795
·
IF 6.8
Song Dewen,Zhang Shipeng,Ning Hui,Fei Xiang,Wang Mingwang,Wang Xiaoshan,Wu Wenting,Zhao Qingshan,Li Yongzhe,Wu Mingbo
CO 2 electroreduction is an alluring technology for high-value CO 2 utilization and intermittent electrical energy storage. Self-supporting catalysts with high efficiency have clear advantages over powder ones in electrode construction but still lack effective synthesis methods. In this work, a self-supporting BiCu/carbon hybrid nanofiber membrane (BiCu/CHNM) was synthesized by electrospinning-calcination and employed directly as a working electrode in a flow cell for CO 2 electroreduction to formate with a high Faradaic efficiency of 87.67% at a partial current density of 142.9 mA cm −2 . In stability tests, the Faradaic efficiency of formate remained at 80% for 50 h at high partial current densities (>100 mA cm −2 ). In-situ Raman spectra and density functional theory calculations confirmed that copper doping lowers the energy barrier of HCOO − formation on the Bi (012) plane and increases the conductivity of the carbon nanofiber network. Due to the well-designed conductive framework and the highly dispersed BiCu active sites, this hybrid membrane shows high activity, high selectivity, and long stability simultaneously.
研究领域:
电化学
·
纳米材料
·
能量转换
·
环境技术
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）