Article
Chemistry, Physical
Gihan Kwon, Seo Hyoung Chang, Jin Eun Heo, Kyeong Jun Lee, Jin-Kwang Kim, Byeong-Gwan Cho, Tae Yeong Koo, B. J. Kim, Chanseok Kim, Jun Hee Lee, Seong-Min Bak, Kevin A. Beyer, Hui Zhong, Robert J. Koch, Sooyeon Hwang, Lisa M. Utschig, Xiaojing Huang, Gongfang Hu, Gary W. Brudvig, David M. Tiede, Jungho Kim
Summary: The study experimentally verifies the atomic structures and electronic states of amorphous iridium oxide catalysts using RIXS and PDF measurements. The results show distinct differences in electronic and coordination structures between IrOx and IrBL.
Article
Chemistry, Applied
Xiangrong Ren, Yujin Ji, Yiyue Zhai, Ningyi Yuan, Jianning Ding, Youyong Li, Junqing Yan, Shengzhong Frank Liu
Summary: Efficient charge transfer through the interface between the semiconductor and co-catalyst is essential for photoelectrocatalytic (PEC) energy conversion. A novel and facile electrochemical activation method was used to load the amorphous CoOOH layer onto TiO2, resulting in a 6% CoOOH-TiO2 photoelectrode with superior PEC performance. The interface between CoOOH and TiO2 enhances the homogeneity of effective d-orbital electronic-transfer ability among Co sites, shedding light on the design of more favorable PEC co-catalysts.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Shuo Li, Yahui Li, Juan Zhang, Xiutao Liu, Kaixin Zhang, Yu Zhang, Xi-ming Song
Summary: A CoOOH cocatalyst overlayer is electrochemically deposited on the BiVO4 surface, and thermal annealing converted CoOOH to Co3O4 in situ. The primary difference between the two cocatalysts lies in their electrolyte permeabilities, resulting in significant differences in their thermodynamic effects on enhancing the photo-electrochemical water oxidation performance. We proved that the CoOOH cocatalyst is unable to achieve true chemical passivation of the surface states of the BiVO4 photoanode, whereas the Co3O4 cocatalyst can chemically passivate the surface states. Nevertheless, the CoOOH cocatalyst still exhibits better water oxidation performance than Co3O4, which is attributed to the permeable CoOOH cocatalyst can accumulate more photogenerated holes in its bulk phase and offer more active sites.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yifeng Huang, Teodora Gancheva, Basil D. Favis, Abdelnasser Abidli, Jun Wang, Chul B. Park
Summary: By utilizing hierarchically porous polypropylene instead of increasing pumping pressure or enlarging primary pores, the oil removal throughput can be significantly enhanced without compromising oil/water separation selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Se-Yong Park, Soon-Ho Rho, Hwan-Seok Lee, Kyoung-Min Kim, Hee-Chul Lee
Summary: Porous films of metals and metal oxides have gained attention due to their larger surface areas and higher reactivities. This study utilized a modified direct current magnetron sputtering method to form porous Zn-ZnO composite films, followed by a wet post-oxidation process to fabricate pure porous ZnO films. Optimal conditions for forming the composite films included an oxygen ratio of 0.3% in the argon gas flow and a process pressure of 14 mTorr. The resulting porous ZnO films had 26% porosity when oxidized at 500°C for 5 minutes.
Article
Chemistry, Multidisciplinary
Kexin Wang, Yali Wang, Bin Yang, Zhongjian Li, Xuetao Qin, Qinghua Zhang, Lecheng Lei, Ming Qiu, Gang Wu, Yang Hou
Summary: Designing acid-stable oxygen evolution reaction (OER) electrocatalysts with low noble-metal content is crucial for green hydrogen generation. In this study, a rutile-structured ruthenium-manganese solid solution oxide with oxygen vacancies (Mn0.73Ru0.27O2-delta) was developed using an electron-feeding modulation strategy. The catalyst exhibited optimal electronic structure and enhanced electrical conductivity, leading to low overpotential and improved OER kinetics. The incorporation of Mn components and O vacancies modulated the adsorption and desorption energy barriers, improving the overall OER kinetics.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shenzhen Chang, Yanhong Chen, Haiyan An, Qingshan Zhu, Huiyun Luo, Yaohui Huang
Summary: Two new polyoxometalate-based supramolecular porous frameworks were synthesized and characterized, showing high efficiency as heterogeneous catalysts for the selective oxidation of substituted phenols to prepare value-added p-BQs. Both compounds exhibited excellent catalytic performance in the oxidation reaction under mild conditions, with high turnover frequencies.
Article
Chemistry, Physical
Donghun Lee, Ki-Duk Kim, Yong-Kul Lee
Summary: Bimetallic CoWS2 catalysts were synthesized during slurry phase hydrocracking (HCK) of vacuum residue (VR) using W(CO)6 and Co-octoate as oil-soluble precursors. The dispersed catalysts were characterized by TEM and XAS, showing that the CoWS2 catalyst formed well-dispersed monolayers. This catalyst exhibited higher TOF and C7-ASP conversions compared to monometallic WS2 or Co9S8 catalysts in the VR HCK.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Hangyu Liu, Liyu Chen, Chun-Chao Hou, Yong-Sheng Wei, Qiang Xu
Summary: The study successfully encapsulated metal nanoparticles into soluble porous carbon cages using a silica-shelled metal-organic framework pyrolysis approach, showing high solubilities and excellent dispersibilities in solvents (water and alcohol), with excellent O-2 and H-2 generation rates. The as-prepared catalysts exhibit top-level turnover frequencies in hydrogen peroxide and ammonia borane hydrolysis, demonstrating excellent stability and durability due to the stable structure and effective confinement of SPCCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Ruifeng Chong, Zhenzhen Wang, Jiaqi Lv, Jiayue Rong, Ling Zhang, Yushuai Jia, Li Wang, Zhixian Chang, Xiang Wang
Summary: The roles of graphene oxide and cobalt (oxy)hydroxide in the study contribute to enhancing the photoelectrochemical performance of Fe2O3. The rational design and facile fabrication strategy show great potential for high efficiency in other PEC systems.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Rukiye Babacan Tosun, Kadriye Ozlem Hamaloglu, Cengiz Kavakli, Pinar Akkas Kavakli, Ali Tuncel
Summary: A reusable catalyst with dual active center was synthesized for the first time, using iridium oxide nanoparticles immobilized on monodisperse porous manganese oxide microspheres. The catalyst showed maximum activity in water oxidation when synthesized with Mn5O8 microspheres, and the catalytic activity was correlated with the oxidation states of manganese oxide. Oxygen evolution up to 244 mmol was achieved in 30 min, with maximum TON and TOF numbers obtained as 298 and 557 h(-1) respectively, demonstrating excellent reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
I. Pacheco, M. Bouvier, O. M. Magnussen, P. Allongue, F. Maroun
Summary: In this study, ultrathin crystalline films of cobalt oxides were grown on Au(111) substrate by electrodeposition. The structure and morphology of the films were investigated, and the influence of the substrate on the morphology of Co3O4 films was studied.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Jingzhou Wang, Huachao Xie, Yuanqing Wang, Runhai Ouyang
Summary: In this study, a method of sign-constrained multi-task learning was used to distill accurate descriptors from multi-source experimental data for accelerated catalyst discovery. A new 2D descriptor (dB, nB) based on 13 experimental data sets was obtained, showing great universality, predictive accuracy, and bulk-surface correspondence. Hundreds of unreported candidate perovskites with activity greater than the benchmark catalyst Ba0.5Sr0.5Co0.8Fe0.2O3 were identified, and experimental validations confirmed the high activity of three perovskite catalysts. This work provides an important new approach for dealing with inconsistent multi-source data in data-driven catalysis and beyond.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Dan Wang, Xiangping Feng, Huan He, Zhiyuan Wang, Runguo Zheng, Hongyu Sun, Yanguo Liu, Chunli Liu
Summary: An amorphous FeCoNiBOx catalyst, fabricated through low-temperature chemical-reduction, exhibits remarkable oxygen evolution reaction (OER) electrocatalytic properties due to the synergistic effects of multiple elements, amorphous nanostructure, and in situ reconstructed surface triggered by borate leaching.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Minhan Li, Yuanyuan Ma, Jun Chen, Robert Lawrence, Wei Luo, Marco Sacchi, Wan Jiang, Jianping Yang
Summary: In this study, a chlorine-doped porous copper electrocatalyst with high C2+ Faradaic efficiency was developed, showing outstanding catalytic stability over a long-term period. The stable cationic Cu-0/Cu+ species induced by chlorine and the well-preserved structure with abundant active sites were found critical to achieving high FE of C2+ in electrochemical CO2 reduction over time.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Yu Luo, Xilong Wang, Weiming Hu, Yan Peng, Chaoqin Wang, Ting Yu, Sidi Cheng, Jing Li, Yimiao He, Chunfang Gan, Shuang Luo, Qiang Zhu
Summary: In this study, inherently chiral 6,7-diphenyldibenzo[e,g][1,4]diazocine (DDD) was synthesized enantioselectively for the first time using chiral phosphoric acid (CPA) as a catalyst. The reaction yielded 82% of the desired product with a 98% enantiomeric excess. The method could also be applied to racemic biaryl diamines through kinetic resolution. DDD's high energy barriers and chemical stability make it an ideal platform for developing new chiral ligands and catalysts.
Review
Food Science & Technology
Xilong Wang, Bei Le, Na Zhang, Kathrine H. Bak, Yuhao Zhang, Yu Fu
Summary: Collagen peptides from fish have excellent bioactive and functional properties, making them important functional ingredients in the food industry. However, the off-flavour in fish collagen peptides limits their application. Therefore, researching the removal of off-flavour compounds from fish collagen peptides is of great importance.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Qiong Yang, Yuqing Wang, Ying Liu, Junfeng Liu, Xiurong Hu, Jianmin Ma, Xuejun Wang, Yi Wan, Jianying Hu, Zhaobin Zhang, Xilong Wang, Shu Tao
Summary: The high-speed rail (HSR) network in China has rapidly developed since the 2000s. The future expansion of the railway network and construction of an HSR system will have significant impacts on regional development and air pollutant emissions. This study uses a transportation network-multiregional computable general equilibrium (CGE) model to analyze the dynamic effects of HSR projects on economic growth, regional disparities, and air pollutant emissions in China. The results show that HSR system improvement can stimulate positive economic impact but also increase emissions, and different regions experience varying effects on GDP growth and air pollution emissions due to HSR investment.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Ecology
Yongping Kou, Chaonan Li, Bo Tu, Jiabao Li, Xiangzhen Li
Summary: The assembly mechanisms of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities along an altitudinal gradient were investigated. The study found that the alpha-diversity of AOA communities decreased monotonically with increasing elevation, while a sinusoidal pattern was observed for AOB communities. Mean annual temperature was the most influential factor for the alpha-diversity of AOA communities, while plant richness, soil conductivity, and total nitrogen made comparable contributions to the alpha-diversity of AOB communities. Additionally, beta-diversity of AOA and AOB communities were divided into two distinct clusters by elevation, mainly attributed to soil pH and variations in plant richness. AOB communities contributed more to soil nitrification potential in the low-altitude section, while AOA communities were more important in the high-altitude section.
Article
Engineering, Chemical
Shuai Wang, Yipin Lv, Xilong Wang, Daowei Gao, Aijun Duan, Huaiqing Zhao, Peng Zheng, Guozhu Chen
Summary: A well-designed catalyst with platinum and gold encapsulated in zeolite was studied for semi-hydrogenation reaction. Gold nanoparticles and zeolite surface were identified as the active sites for the reaction, with the gold active site showing preferable selectivity for phenylacetylene and 1,5-cyclooctadiene.
Article
Environmental Sciences
Xian Wang, Yuqing Wang, Ying Liu, Junfeng Liu, Xiurong Hu, Jianying Hu, Yi Wan, Xuejun Wang, Jianmin Ma, Xilong Wang, Shu Tao
Summary: Freight transport in China has become increasingly important in terms of CO2 and air pollutant emissions, but few studies have used consumption-based methods to assess its environmental impact. Using multi-regional input-output tables, this study employs structural path analysis to determine the link between interprovincial trade-related freight turnover and responsible sectors of final consumption. The findings reveal significant growth in interprovincial trade turnover and associated emissions, with final consumption in equipment, construction, service, and food driving the most freight turnover. Optimizing China's industrial geographical layout and trade structure is essential to reduce CO2 emissions associated with the freight transport system.
ENVIRONMENTAL POLLUTION
(2023)
Article
Energy & Fuels
Enhua Wang, Di Hu, Chengkun Xiao, Shaotong Song, Yutong Zou, Siyuan Fu, Kebin Chi, Jian Liu, Aijun Duan, Xilong Wang
Summary: A core-shell Pt/MOR-PMOs-x@MSNs catalyst with hierarchical pore structures and suitable acidities was prepared and showed excellent sulfur resistance in hydrogenation reactions. The catalyst's hierarchical pore structure facilitated accessibility, reduced mass transfer resistance, and enhanced sulfur resistance. The addition of mordenite zeolites increased the catalyst's acid sites and synergistic interaction with Pt nanoparticles, further improving its sulfur tolerance.
Article
Soil Science
Xiaohu Wang, Xiaoming Wang, Wantong Zhao, Ran Yu, Junkang Wu, Yongping Kou, Qing Liu, Wenqiang Zhao
Summary: Soil inorganic nitrogen deficiency restricts forest productivity in subalpine regions. The diversity and abundance of ammonia-oxidizing bacteria greatly affect soil inorganic nitrogen availability in subalpine coniferous forests. The interfacial interactions between bacteria and soil particles have been found to influence the ammonia oxidation process.
Article
Chemistry, Multidisciplinary
Yu Luo, Xilong Wang, Qianwen Liu, Yimiao He, Jing Li, Shuang Luo, Qiang Zhu
Summary: An ultramild reaction condition for the hydrocarbonylation of alkynes has been developed using Pd-H generated from Et3SiH instead of strong acid. The reaction showed unusual counteranion-controlled linear and branched selectivity for terminal alkynes, and regioselective products were obtained from terminal and internal alkynes in moderate to excellent yields. Furthermore, enantioselective construction of indolone derivatives with a C-N chiral axis was achieved using TMS-SYNPHOS as the chiral ligand.
Article
Engineering, Environmental
Chuanhao Yan, Xuefeng Yu, Wenyi Jia, Jinglei He, Jing Hu, Meng Zhang, Jianlong Wang, Lin Tang, Junfeng Liu, Xilong Wang
Summary: Electrospinning was used to synthesize a cost-effective fiber mat CS-Glu-Th with superior sorption capacity, sorption rate, and selectivity for Au(III). The sorption mechanism involved electrostatic attraction and coordination interaction with C-N, C--N, and C--S groups, and C-N efficiently reduced sorbed Au(III) to elemental gold. CS-Glu-Th also showed favorable sorption selectivity for Au(III) under the interference of co-existing elements. Cost-benefit analysis demonstrated the profit potential of CS-Glu-Th for gold recovery from industrial applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Zhenrui Zhang, Shaoda Liu, Xilong Wang, Shurui Huang, Ke Sun, Xinghui Xia
Summary: Humic substances (HSs) significantly influence the transport and bioavailability of hydrophobic organic compounds (HOCs) in soils. This study investigated the sorption behavior of HOCs by different HS fractions in soils from different climatic zones. The results showed that HSs from colder climatic zones exhibited higher sorption affinity and different compositions compared to those from warmer climatic zones. The findings highlights the importance of considering the sorption differences of HOCs to HSs among different climatic zones in predicting HOC fates and bioavailability in soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Kai Yang, Xilong Wang, Hefa Cheng, Shu Tao
Summary: The aging processes of biochars in soils can slowly change their physicochemical properties, influencing their interaction with heavy metals. The effects of aging on immobilization of co-existing heavy metals in contaminated soils amended with contrasting biochars remain unclear. This study investigated the effects of wet-dry and freeze-thaw aging on the bioavailability and chemical fractionation of Cd and Pb in contaminated soil amended with chicken manure (CM) biochar and wheat straw (WS) biochar. The results showed that CM biochar effectively reduced the bioavailability of Cd and Pb, while WS biochar only immobilized Pb under freeze-thaw aging. The changes in heavy metal immobilization resulted from aging-induced alterations in biochar surface functional groups, porous structure, and dissolved organic carbon release. These findings are important for selecting suitable biochars for immobilizing multiple heavy metals in co-contaminated soil under changing environmental conditions.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jia Liu, Kai Fang, Yongping Kou, Ruixue Xia, Heliang He, Wenqiang Zhao, Qing Liu
Summary: This study investigated the effects of forest secondary succession on the soil micro-food web and soil carbon and nitrogen mineralization. With forest succession, the total soil microbial biomass and the biomass of each microbial group generally increased. The changes in the soil nematode community were mainly observed in several trophic groups that are sensitive to environmental disturbance. The soil carbon and nitrogen mineralization rates also increased during forest succession, which were positively correlated with the composition and structure of the soil micro-food web.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xuefeng Yu, Chuanhao Yan, Jinglei He, Jinlong Zhang, Hangzhou Lv, Fuqiang Liu, Jianlong Wang, Junfeng Liu, Xilong Wang
Summary: In this study, a magnetic nanomaterial with a core-shell structure was successfully synthesized for effective adsorption of gold ions. The material demonstrated excellent selectivity, one-step reduction, and easy separation, marking a significant breakthrough in the field of gold ion recovery.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xuefeng Yu, Jinglei He, Chuanhao Yan, Yangyang Chu, Jing Hu, Wenyi Jia, Hangzhou Lv, Hanchao Zhang, Peng Wang, David Werner, Xilong Wang
Summary: A novel fibrous material was synthesized by treating carbon nanofibers with ammonia-plasma followed by N-Aminorhodanine assembly, and it was used for the sorption of Au(III). The results showed that the N-Aminorhodanine assembled-carbon nanofibers (N-AMCNFs) had a maximum sorption capacity of 229 mg/g for Au(III), which was 20.6 times higher than that of carbon nanofibers (11 mg/g). The excellent recovery of Au(III) by N-AMCNFs was mainly attributed to its hydrophilic nature, the presence of N- and S-containing soft base moieties, and electrostatic attraction between AuCl4- and N-AMCNFs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
