Article
Chemistry, Physical
Zeqi Shi, Xuetao Shen, Zhe Zhang, Xi Wang, Ning Gao, Zhanwei Xu, Xueying Chen, Xinyue Liu
Summary: A facile template-free method was reported for the preparation of novel urchin-like hollow nickel cobalt sulfide, which significantly improved specific capacitance and accommodated structural collapse caused by electrochemical reactions. The resulting hollow spheres demonstrated impressive capacitance and cycling stability, making progress on efficient supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zhichao Jiao, Yuanqing Chen, Miao Du, Muslum Demir, Fuxue Yan, Weimin Xia, Ying Zhang, Cheng Wang, Mengmeng Gu, Xiaoxuan Zhang, Juntao Zou
Summary: The research on the structure of advanced electrode materials is significant in the field of supercapacitors. A novel 3D/3D composite structure is proposed for the first time, which combines 3D hollow NiCo LDH nanocages with 3D sea urchin-like CoO microspheres. The hybrid structure exhibits excellent electrical conductivity, electrochemical reaction kinetics, and long cycling stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Electrochemistry
K. Ajith Kumar, B. Gnanavel, J. Richards Joshua, Amal BaQais, V. Sharmila, Mir Waqas Alam
Summary: In this study, we have synthesized NiCoP covered with WSe2@ZnS using the hydrothermal approach. The resulting hybrid supercapacitor electrode exhibits high specific capacity, excellent cycling stability, and promising electrochemical properties, making it a potential candidate for energy storage applications.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Pandeng Zhao, Shaqi Fu, Xue Wang, Zheng Jiao, Lingli Cheng
Summary: Complex hollow structure nanostructure, specifically the ZnS/NiS/NiS2 composite with a distinctive hierarchical hollow porous urchin-like structure, has shown excellent electrochemical performance as an anode material for lithium-ion batteries. The composite exhibits high porosity, large specific surface area, and a strong synergetic interaction between ZnS and NiS/NiS2, enabling efficient lithium-ion transfer and maintaining mechanical stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Rui Yang, Yu Zhang, Xian Huang, Huiqun Yin, Yiyan Mo, Kaiyou Zhang, Aimiao Qin, Shuoping Chen, Shuge Dai
Summary: The electrochemical performance of the electrode material for supercapacitor can be improved by a specific morphology. NiCo2Se4 with a hollow nanobamboo shoot structure is prepared and it exhibits high specific capacitance and cycling stability. The designed NiCo2Se4//AC supercapacitor shows a high energy density at a certain power density.
Article
Chemistry, Analytical
Hao Zhang, Jianghan Hu, Mingwei Li, Zhenhua Li, Ye Yuan, Xueli Yang, Lanlan Guo
Summary: A facile solvothermal method was employed to synthesize hollow urchin-like core-shell spinel structured ZnO/ZnFe2O4 composite and pure ZnFe2O4 sensing material. Different ratios of Zn to Fe in the precursor resulted in different final components of the products. Gas sensors based on these materials exhibited high gas response to toluene, with the pure ZnFe2O4 sensor showing a lower operating temperature and higher gas response. The sensing mechanism was analyzed in detail in combination with BET and XPS results.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Agricultural Engineering
Lu Luo, Yalan Zhou, Wen Yan, Lingcong Luo, Jianping Deng, Guanben Du, Mizi Fan, Weigang Zhao
Summary: Activated carbon fiber (ACF) from Chinese fir wood powder by melt-spinning was used to prepare a NiCo-LDH@ACF composite material via a microwave-assisted synthesis method, which shows great potential as electrode materials for energy storage devices. The Ni1Co1-LDH@ACF composite exhibits the largest specific capacitance and high rate performance at a molar ratio of Ni2+/Co2+ of 1:1. Moreover, the assembled asymmetric supercapacitor device with NiCo-LDH@ACF composites and fir bark-based activated carbons demonstrates superior energy density and cycle life.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Physical
Meng Wu, Lei Rao, Lu Liu, Yuexia Li, Yuan Zhang, Ziying Ji, Guobing Ying
Summary: The development of lightweight microwave stealth materials for aerospace flying vehicles requires the use of lightweight absorbers with low density and high thermal stability. In this study, a hollow spherical structure with a uniform carbon shell around the urchin-like Fe3O4 core was synthesized. The Fe3O4@C absorber showed strong reflection loss and a maximum effective absorption bandwidth. The proposed core-shell structure provided good impedance matching and electromagnetic loss ability, and the urchin-like structure improved polarization, relaxation, and multiple scattering attenuations of electromagnetic waves.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Shuai Jia, Yanyan Lv, Jie Wei, Jie Guan, Yan Zhai, Ziqiang Shao
Summary: Tailoring architecture and multi-composition of electrode materials is important for developing energy storage devices. In this study, hierarchical nickel cobalt hydroxysulfide hollow spheres with amorphous nanosheets and dual-ligands were synthesized. The resulting material exhibited enhanced conductivity and enlarged specific surface area, leading to desirable electrochemical performance. When used in a hybrid device with porous activated carbon, it achieved a high energy density and cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Pingping Gao, Meilian Gao, Ting Lei, Zhongping Ren, Jun Luo, Zhonghua Huang, Anru Wu
Summary: A novel self-supported hollow urchin-like iron phosphide (h-FeP) on carbon paper (h-FeP/CP) is synthesized from selective etching treatment of FeAlOOH precursor. The as-obtained h-FeP/CP catalyst exhibits larger surface areas and more active sites, showing the most prominent catalytic activity for the hydrogen evolution reaction (HER).
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Ahmad Umar, Ahmed A. Ibrahim, H. Y. Ammar, Umesh T. Nakate, Hasan B. Albargi, Y. B. Hahn
Summary: The synthesis, characterizations and gas sensor application of nano-textured urchin like CuO hollow microspheres were reported. The fabricated CuO sensor device showed elevated response towards ethanol with high selectivity after optimization of operating temperature and concentration. The developed gas sensor devices demonstrated outstanding selectivity towards ethanol gas and the ethanol sensing mechanism was elucidated using density functional theory computational quantum modeling.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yufa Feng, Youxiang Shao, Xiaodong Chen, Yadong Zhang, Quanbing Liu, Mingyang He, Hao Li
Summary: In this study, sea-urchin-like hollow CuMoO4-CoMoO4 hybrid microspheres were prepared by a template-free approach and exhibited ultrahigh catalytic performance in hydrolyzing ammonia borane for H-2 production. A synergistic effect was experimentally confirmed between CoMoO4 and CuMoO4, leading to a significant decrease in energy barrier in the rate-determining step of AB hydrolysis. These findings offer new insights for designing cheap hybrid catalysts with high performance in AB hydrolysis.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xiaojuan Zhao, Houzhao Wan, Pei Liang, Nengze Wang, Cong Wang, Yi Gan, Xu Chen, Qiuyang Tan, Xiang Liu, Jun Zhang, Yi Wang, Hanbin Wang, Hao Wang
Summary: In this study, a core-shell structure of HMCS/NiSe2 electrode material was successfully constructed, showing excellent performance at high current densities and cycling stability. The modification of NiSe2 with HMCS was confirmed to enhance its rate capability through both theoretical calculations and experimental results. This work provides a feasible electrode material for high energy density and power density energy storage devices.
Article
Crystallography
Yuanzhao Wu, Mingjie Chen, Haohao Bai, Binjie Wang, Jiye Wang, Yazhou Qin, Weixuan Yao
Summary: In this article, hollow urchin-like Au nanocrystals were prepared using HAuCl4·3H2O and AgNO3 as precursors and ascorbic acid as the reducing agent. The prepared Au nanocrystals exhibited different surface morphologies depending on the amount of HAuCl4·3H2O used. The hollow urchin-like Au nanocrystals were characterized and used in surface-enhanced Raman spectroscopy (SERS) and photocatalytic reactions.
Article
Engineering, Electrical & Electronic
Tao Zhu, Rongchen Wang, Jinbo Yang, Changsheng Wang, Wei Wang, Wenyun Yang
Summary: In this study, the hollow urchin-like structure of manganese dioxide (MnO2) was successfully synthesized via a one-step hydrothermal strategy, showing exceptional microwave absorption properties. The hollow urchin-like alpha/gamma-MnO2 exhibited excellent microwave absorption with a minimum reflection loss of -53.3 dB at 14.17 GHz and an effective absorption bandwidth of 5.45 GHz. The study provides valuable insights for the development of environmentally friendly, cost-effective, and high-performance materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Zhi Zou, Lei Wu, Fangqi Yang, Chenliang Cao, Qiangguo Meng, Junhui Luo, Weizhen Zhou, Zhikun Tong, Jingwen Chen, Shixia Chen, Shaodong Zhou, Jun Wang, Shuguang Deng
Summary: In this study, hollow NiCo-LDH nanocages were successfully prepared and their relationship between structure and electrocatalytic performance was investigated. By revealing the synergetic mechanisms of Ni and Co ions and proposing optimized catalytic sites, high NH3 yield and faradaic efficiency in N-2 electroreduction were achieved.
Article
Multidisciplinary Sciences
Jun Wang, Yan Zhang, Yun Su, Xing Liu, Peixin Zhang, Rui-Biao Lin, Shixia Chen, Qiang Deng, Zheling Zeng, Shuguang Deng, Banglin Chen
Summary: By fine-tuning the pore size at sub-nanometer scale, researchers have achieved efficient separation of acetylene and carbon dioxide. Remarkable adsorption performance enhancement was observed due to subtle structural differences.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Qiangguo Meng, Yunpeng Hou, Fangqi Yang, Chenliang Cao, Zhi Zou, Junhui Luo, Weizhen Zhou, Zhikun Tong, Shixia Chen, Shaodong Zhou, Jun Wang, Shuguang Deng
Summary: This study presents a method to transform cobalt phosphide, which favors the hydrogen evolution reaction, into an electrocatalyst favorable for the nitrogen reduction reaction by modulating surface properties. The oxidized CoP particles encapsulated in carbon nanotubes exhibit high NH3 yield and Faradaic efficiency, while inhibiting the hydrogen evolution reaction and facilitating the nitrogen reduction reaction. In-situ Raman spectra and density functional theory calculations confirm the surface modulation effects.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xinxin Han, Bingjie Lu, Xin Huang, Cheng Liu, Shixia Chen, Jingwen Chen, Zheling Zeng, Shuguang Deng, Jun Wang
Summary: This study reports a layered double hydroxide-based photocatalyst that achieves CO2 photoreduction by utilizing an internally built-in electric field, resulting in a high CO yield rate.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Fangqi Yang, Haoming Yu, Yun Su, Jingwen Chen, Shixia Chen, Zheling Zeng, Shuguang Deng, Jun Wang
Summary: This study presents a novel single atom catalyst formed on curved carbon nanotubes, which shows remarkable electrocatalytic performance and stability for CO2 reduction. In-situ Raman spectroscopy provides insights into the reaction intermediates, and theoretical calculations reveal the underlying catalytic mechanism.
Article
Engineering, Chemical
Yao Zhong, Cuiying Huang, Jianxin Cai, Jun Wang, Zheling Zeng, Qiang Deng
Summary: A two-dimensional metal-organic framework, NUS-8-PhSO3H, with high densities of dual acidic sites has been developed for efficient conversion of saccharides to 5-hydroxymethylfurfural with low activation energy.
Article
Engineering, Chemical
Likang Zhang, Xiang Li, Jun Wang, Zheling Zeng, Weiran Yang, Shuguang Deng, Qiang Deng
Summary: This study reports on the preparation of an iodine-modified Pt-based catalyst, which shows high catalytic efficiency for synthesizing linear diols via the hydrogenative ring-opening route. The yield of linear diols can reach 80%-90%, while the bare Pt catalyst only synthesizes tetrahydrofurans via overhydrogenation. The study provides a feasible and convenient strategy for bifunctional catalysis with iodine-modified noble metals.
Article
Engineering, Chemical
Zhiwei Zhao, Yueyue Liu, Xing Liu, Yuan Liu, Jingwen Chen, Shixia Chen, Shuguang Deng, Jun Wang
Summary: The one-step adsorptive separation of high-purity ethylene (C2H4) from a ternary gas mixture (C2H2/C2H4/CO2) using camphor seeds husk-derived ultramicroporous carbons (CSHs) has been successfully achieved. The optimized CSH-2-700 exhibits high C2H2 adsorption capacity (2.24 mmol g(-1)) and record IAST C2H2/C2H4 selectivity (10.2) among one-step C2H4 purification adsorbents, due to its high heteroatom contents and centered pore size distributions. Moreover, CSH carbons selectively adsorb CO2 over C2H4, with a CO2/C2H4 selectivity of 1.9 under ambient conditions, making them promising adsorbents for one-step C2H4 purification from a three-component gas mixture.
Article
Engineering, Chemical
Xuemeng Hou, Yao Zhong, Jingjing Xiao, Jun Wang, Jianxin Cai, Zheling Zeng, Shuguang Deng, Qiang Deng
Summary: An efficient and facile synthesis of DMF from biomass saccharides has been achieved by designing a powerful 2DMOF-based catalyst with cooperative acid-hydrogenation catalysis.
Article
Chemistry, Physical
Xing Liu, Yunpeng Hou, Fangqi Yang, Yueyue Liu, Haoming Yu, Xinxin Han, Jingwen Chen, Shixia Chen, Shaodong Zhou, Shuguang Deng, Jun Wang
Summary: In this study, novel electrocatalysts Ni@NCNT were synthesized by encapsulating Ni nanoparticles in N-rich carbon nanotubes using chemical vapor deposition method. The optimized Ni@NCNT-700 showed high Faradic efficiency for ethanol synthesis in a wide potential range, with ethanol as the sole liquid product. In-situ Raman and density functional theory calculations revealed that the synergistic effects of Ni nanoparticles and NCNTs lowered the energy barrier for C-C coupling and suppressed *CO desorption.
Article
Chemistry, Multidisciplinary
Xin-Jian Jin, Long Tan, Zhi-Qing Zhao, Meng-Chao Li, Qun-Yi Zhou, Jing-Jian Zhang, Tong-Bao Lv, Qiang Deng, Jun Wang, Zheling Zeng, Shuguang Deng, Gui-Ping Dai
Summary: Dual-emissive graphene quantum dots (GQDs) were synthesized via a one-pot solvothermal method using 2,7-dihydroxynaphthalene (2,7-DHN) and piperazine anhydrous (PA) as raw materials. The obtained GQDs exhibited green and red emission bands, originating from the inner structure and surface functional groups, respectively. The prepared GQDs showed concentration-dependent optical properties and high quantum yields, making them suitable for bioimaging applications.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Qiang Deng, Jialuo Lu, Guan Sheng, Yong-Chao Zhang, Jun Wang, Zheling Zeng, Tatchamapan Yoskamtorn, Shik Chi Edman Tsang
Summary: This study demonstrates the ultraselective hydrodehydroxylation of C-OH groups and excellent catalytic performance in hydrogenative ring-opening reactions using partially sulfur-poisoned Pd catalysts. The elucidation of the catalytic mechanism reveals the heterolytic activation of H-2 on Pd-S and the promotion of bifunctional catalytic reactions.
Article
Chemistry, Physical
Likang Zhang, Yao Zhong, Jun Wang, Zheling Zeng, Shuguang Deng, Ji-Jun Zou, Qiang Deng
Summary: In this study, advanced intermetallic PdZn nanoparticle-supported catalysts were prepared for the tandem hydrogenative rearrangement of furan aldehydes/ketones into cyclopentanones. The catalysts exhibited high catalytic efficiency and generality for synthesizing various cyclopentanones with yields above 90%. Investigations into the catalytic mechanism revealed the involvement of an ionic water-mediated pathway in the heterolytic activation of H2, providing unconventional active sites for the reaction steps.
Article
Chemistry, Physical
Jinze Yao, Zhiwei Zhao, Liang Yu, Jiajin Huang, Shigen Shen, Siyao Zhao, Ying Wu, Xiangyang Tian, Jun Wang, Qibin Xia
Summary: In this study, the effect of metal modulation on the SO2 adsorption and separation performance of MOF materials was investigated. Among the four bimetal PCN-250 materials, PCN-250(Fe2Ni) exhibited the highest SO2 uptake, while PCN-250(Fe2Zn) showed the largest SO2/CO2 selectivity. Dynamic breakthrough experiments showed that PCN-250(Fe2Zn) had the most outstanding separation performance even with water vapor and real flue-gas compositions. Molecular simulations indicated that PCN-250(Fe2Zn) captured SO2 through multiple O-δ···H···δ+-hydrogen bonds.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Xinxin Han, Cheng Liu, Yuan Tang, Qiangguo Meng, Weizhen Zhou, Shixia Chen, Shuguang Deng, Jun Wang
Summary: In this study, a series of iron-cobalt oxyhydroxide hollow nanocages were constructed via controlled Co doping, which exhibited high efficiency and superior NH3 formation rate in electrocatalytic nitrogen reduction reaction. In situ Raman spectra revealed the existence of intermediates and identified the reaction pathway. Density functional theory calculations showed that Co doping could lower the energy barrier and drive NH3 electrosynthesis through preferential proton adsorption on Co sites. Moreover, these hollow nanocages with a suitable Fe/Co ratio could boost N-2 activation.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
