Article
Chemistry, Physical
Zhaolong Wang, Hanxiang Chen, Jian Bao, Yanhua Song, Xiaojie She, Guoai Lv, Jiujun Deng, Huaming Li, Hui Xu
Summary: The development of a bifunctional electrode material with amorphous NiFeMo films grown on a conductive nickel foam substrate has significantly improved the overall water splitting performance, allowing for efficient hydrogen production to alleviate carbon emissions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mingxuan Fu, Guyang Ning, Jiaxian Liu, Qi Zhang, Yuena Sun, Xinyu Fan, Haiyang Wang, Haijun Lu, Yufan Zhang, Huan Wang
Summary: The study focused on developing high-activity and durable dual-functional electrocatalysts for hydrogen and oxygen evolution reactions. By preparing core-shell structured nanocubes, the catalyst showed enhanced catalytic activity and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mengjin Wen, Zihan Li, Rui Wang, Zhengmin Li, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: A new type of superior activity and highly cost-effective amorphous electrocatalyst Co-Mo-Fe on nickel foam supports was prepared by facile one-step rapid electrodeposition. The doping of Fe significantly improved the oxygen evolution capacity of the Co-Mo-Fe system, and the synergistic effect of the three metals and the doping of the third metal iron increased the oxygen evolution active sites of the whole system significantly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Chengjiao Zhao, Jiawang Li, Muzi Yang, Jian Chen, Fangyan Xie, Nan Wang, Yanshuo Jin, Xiang Yu, Hui Meng
Summary: In this paper, researchers reported a method to generate a large amount of active NiFeOOH through surface reconstruction. These active sites can efficiently catalyze the oxygen evolution reaction (OER) and exhibit excellent catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Lakshya Kumar, Bindu Antil, Ankur Kumar, Manash R. Das, Omar Lopez-Estrada, Samira Siahrostami, Sasanka Deka
Summary: In this study, novel nonprecious transition-metal phosphide nanoparticles were developed as efficient electrocatalysts for hydrogen and oxygen evolution reaction and overall water splitting. The surface chemistry of these nanoparticles was explored to understand the reaction mechanism. The optimized catalyst exhibited attractive catalytic activities and durability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Xuejie Cao, Tongzhou Wang, Lifang Jiao
Summary: Electrochemical water splitting is a promising technology for sustainable hydrogen production that relies on efficient electrocatalysts like transition-metal-based materials. Fibrous electrocatalysts, with their unique structure and advantages, have shown great potential in accelerating hydrogen and oxygen evolution reactions. Iron, cobalt, and nickel-based nanofiber electrocatalysts are particularly promising for future applications in water splitting.
ADVANCED FIBER MATERIALS
(2021)
Article
Chemistry, Physical
Xue Bai, Yong Fan, Changmin Hou, Tianmi Tang, Jingqi Guan
Summary: Cobalt-iron oxyhydroxide demonstrates excellent OER activity with appropriate crystallization, the active sites being di-mu-oxo bridged Fe-Co. Partial crystallization accelerates the OER process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Xiaohong Gao, Jieli Chen, Yanhui Yu, Fangyuan Wang, Xiao Wu, Xingbo Wang, Weihua Mao, Jing Li, Wei Huang, Qi Chen, Ruisong Li, Chenghang You, Shaolei Wang, Xinlong Tian, Zhenye Kang
Summary: In this work, core-shell structured nanoarrays (NiTe@FeOOH) were designed and constructed for efficient overall seawater splitting. The catalyst exhibited superior performance in both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), with low overpotentials and excellent durability. The strong interactions between NiTe and FeOOH, as well as the surface charge effect, contribute to its high activity and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Busra Mete, Naeimeh Sadat Peighambardoust, Samet Aydin, Ebrahim Sadeghi, Umut Aydemir
Summary: Research on earth-abundant and efficient electrocatalysts for water splitting has surged in recent years. ZrB2-based catalysts with metal substitution, particularly Zr0.8Ni0.2B2 and Zr0.8Co0.2B2, show remarkable performance in oxygen and hydrogen evolution reactions with excellent catalytic durability.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
E. Hatami, A. Toghraei, Ghasem Barati Darband
Summary: The usage of active electrocatalysts is beneficial for accelerating the kinetics of electrochemical reactions and enhancing water splitting efficiency. A novel Ni-Fe micro/nano urchin-like structure with activity for both HER and OER has been reported in this study. This cost-effective fabrication method shows promising potential for applications in the field of water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Qinggang Du, Panpan Su, Zezhong Cao, Jie Yang, Cameron Alexander Hurd Price, Jian Liu
Summary: This study successfully prepared N and Fe co-doped CoO nanoparticles with high OER activity at low cost, originating from oxygen vacancies and interface effects, providing new insights into the active sites of Co-based catalysts.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Xinyu Wei, Changwu Wan, Yi Zhang, Qin Zhong, Hongxia Qu
Summary: A core-shell structure composed of Ni-SnO2 as the core and NiBO as the shell was formed through a redox reaction, which optimized the electronic structure of Ni and enhanced the hydrogen adsorption performance. This core-shell synergy significantly improved the performance of the hydrogen evolution reaction (HER).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Ting Zhang, Jingyi Han, Tianmi Tang, Jianrui Sun, Jingqi Guan
Summary: SnFeSxOy/NF is synthesized using a solvothermal method, exhibiting low overpotentials and high catalytic activity for water electrolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Bo Jiang, Zhe Wan, Yunqing Kang, Yanna Guo, Joel Henzie, Jongbeom Na, Hexing Li, Shengyao Wang, Yoshio Bando, Yoshio Sakka, Yusuke Yamauchi
Summary: Researchers have developed a new type of porous metallic aerogels with a core-shell structure, exhibiting high conductivity and surface area for catalysis. By utilizing an auto-programmed synthesis method, they successfully generated a trimetallic core-shell Cu@Fe@Ni metallic aerogel with highly active catalytic properties.
Article
Chemistry, Physical
Hyogyun Roh, Hyeonjung Jung, Hyuntae Choi, Jeong Woo Han, Taiho Park, Sangkuk Kim, Kijung Yong
Summary: Metal phosphide nanowires grown directly on porous electrodes show enhanced catalytic activity for water splitting. Fe-doped Ni2P nanowires exhibit the best oxygen evolution reaction performance, while Mo-doped Ni2P nanowires show excellent hydrogen evolution reaction activity. DFT calculations support the experimental results, and combining NiMoP/NiFeP for overall water splitting requires a low potential of 1.57 V to generate 10 mA cm-2 current density. The assembled PV-EC system achieves a high solar-to-hydrogen conversion efficiency of 14%.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Electrochemistry
Jiajun Wang, Lei Alexander Zhang, Yanmei Ren, Ping Wang
Summary: Fluorine (F) anion doping is a promising approach for enhancing the activity of earth-abundant metal catalysts for the oxygen evolution reaction (OER). In this study, a F-NiOOH/Ni(OH)2/NF catalyst was fabricated and it exhibited significantly improved OER activity due to the substitution of fluoride anions for hydroxyl groups in the NiOOH surface layer. Moreover, this F-doping method showed excellent stability when operated in a fluoride-containing electrolyte, and it can be applied to other transition metal oxide/hydroxide catalysts for boosting OER activity.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Minjie Hu, Jordi Sardans, Ruibing Yan, Hui Wu, Ranxu Ni, Josep Penuelas, Chuan Tong
Summary: The conversion of wetlands to aquaculture ponds alters phosphorus (P) cycling and its budget balance, leading to increased P release into water and exacerbating water quality degradation and eutrophication in coastal areas. This study investigates the availability and mobilization mechanisms of P in natural coastal wetlands and converted aquaculture ponds using advanced techniques, revealing that the conversion weakens the dependence of sediment P mobilization on iron and sulfur reactions. The findings emphasize the urgent need for specific actions to alleviate internal P-loading in aquaculture.
Article
Chemistry, Physical
Jiajun Wang, Yanmei Ren, Ping Wang
Summary: This study demonstrates the significant effect of anion-cation co-doping in the oxyhydroxide phase on the oxygen evolution reaction (OER) performance. By electrooxidation of Ni foam-supported NiO nanosheets in an electrolyte containing Fe2+ and F-, an (Fe, F) co-doped NiOOH amorphous surface layer was formed. The Ni1-xFexO(OH)(1-y)F-y/NiO/NF catalyst exhibited excellent catalytic performance for the alkaline OER with an overpotential of 186 mV to achieve 10 mA/cm² and a potential fluctuation of only +/- 15 mV over 100 h constant-current measurement at 500 mA/cm² in a F-containing electrolyte. It shows great potential for water-splitting application.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Hui Wu, Wei Zhou, Terrence J. Udovic, Robert C. Bowman, Bjorn C. Hauback
Summary: Since the initial assessment four decades ago, research on the hydrogen-storage applications of zirconium diberyllide, ZrBe2, has mainly focused on its hydride composition, ZrBe2H1.5. However, recent studies using neutron techniques have revealed the existence of two other ordered phases of ZrBe2Hx with lower hydrogen contents (x < 1.5) at low temperatures. These phases have different structural symmetries, H-sublattice orderings, and undergo higher-temperature phase transitions. This study provides a more complete understanding of the ZrBe2Hx phase diagram.
Article
Chemistry, Multidisciplinary
Yang Yu, Jintao Wang, Zhaoxian Qin, Yingtong Lv, Qijun Pei, Khai Chen Tan, Tengfei Zhang, Anan Wu, Teng He, Hui Wu, Andrew S. Lipton, Ping Chen
Summary: Replacing liquid electrolytes with solid-state electrolytes can solve the safety issues in sodium-ion batteries. However, challenges still exist in finding solid-state electrolytes with high ionic conductivity and stability. Researchers have fabricated sodium carbazolide and its THF-coordinated derivatives as fast sodium conductors with excellent interfacial stability. The evaporation of THF is found to play a crucial role in facilitating the migration of sodium ions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Yili Cao, Takeshi Matsukawa, Alexandra Gibbs, Maxim Avdeev, Chin-Wei Wang, Hui Wu, Qing-zhen Huang, Kenji Ohoyama, Toru Ishigaki, Haowei Zhou, Qiang Li, Jun Miao, Kun Lin, Xianran Xing
Summary: To achieve zero thermal expansion (ZTE), negative thermal expansion is typically used through chemical substitutions, but it often requires trial and error. In this study, we explored the quantification of thermal expansion using magnetic ordering in a specific intermetallic compound, which accurately determined the ZTE composition using existing databases. This research provides insight into high throughput searches for ZTE materials and has potential applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Radovan Cerny, Matteo Brighi, Hui Wu, Wei Zhou, Mirjana Dimitrievska, Fabrizio Murgia, Valerio Gulino, Petra E. de Jongh, Benjamin A. Trump, Terrence J. Udovic
Summary: This study investigates the thermal polymorphism in CsCB11H12 and discovers the existence of two polymorphs: the ordered R3 polymorph at around 313K and the disordered I43d polymorph at around 353K. Additionally, it identifies a disordered Fm3 polymorph appearing from the disordered I43d polymorph at 513K and transforming into a high-temperature P6(3)mc polymorph. Neutron scattering results show isotropic rotational diffusion of CB11H12- anions in the disordered phase at 560K.
Article
Chemistry, Physical
Haofei Zhao, Ziwen Zhou, Xuenan Feng, Chao Liu, Hui Wu, Wei Zhou, Hailong Wang
Summary: This study establishes a hydrogen-bonded organic framework that can be used for red light photocatalysis. By introducing ethylamino groups to the core molecule, the material is able to absorb red light at 619 nm and generate singlet oxygen, thereby enhancing the oxidation rate of sulfides.
Article
Chemistry, Multidisciplinary
He Zhao, Xinxing Lin, Shengchang Lu, Hui Wu, Xiaxing Zhou, Liulian Huang, Jianguo Li, Jianping Shi, Wenxuan Tong, Hongmei Yuan, Lihui Chen
Summary: To enhance the anti-fouling and anti-mildew properties of Bamboo fiber/polypropylene composites (BPCs), a superhydrophobic modified BPC-TiO2-F was fabricated by introducing titanium dioxide (TiO2) and poly(DOPAm-co-PFOEA) onto the composite surface. The modified composite exhibited excellent self-cleaning properties, resistance to mold growth, and mechanical durability, making it promising for automotive upholstery and building decoration applications.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hui-Min Wen, Chenyi Yu, Miaoyu Liu, Chenyan Lin, Beiyu Zhao, Hui Wu, Wei Zhou, Banglin Chen, Jun Hu
Summary: This study achieves one-step separation of C2H4 from ternary mixtures by constructing negative electrostatic pore environments in a stable, low-cost metal-organic framework (MOF-303). The material exhibits high adsorption capacity and selectivity, and shows exceptional separation performance at ambient conditions. It is highly stable and can be easily synthesized using a water-based green synthesis method.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jing-Qing Le, Fang Yang, Xun-Huan Song, Ke-Ke Feng, Ling-Wu Tong, Meng-Die Yin, Wen-Zhong Zhang, Ying-Qi Lin, Hui Wu, Jing-Wei Shao
Summary: The tumor microenvironment has low pH, high ROS levels, and hypoxia, which facilitate cancer growth. Hypoxia not only promotes tumor angiogenesis and metastasis, but also leads to treatment resistance, which hinders cancer therapy. In this study, a biomimetic nanosystem containing red blood cell-derived hemoglobin, chemotherapy drug sorafenib, sensitizer ursolic acid, and photosensitizer indocyanine green was developed for enhanced chemo-phototherapy of hepatocellular carcinoma. The nanosystem improves chemotherapy efficacy through synergistic effects of ursolic acid and achieves phototherapy using indocyanine green. Additionally, hemoglobin facilitates oxygen delivery to the tumor site and ameliorates the hypoxic environment. This dual-sensitization drug delivery system shows promise in overcoming treatment resistance caused by tumor hypoxia in hepatocellular carcinoma.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Baoqiu Yu, Rui-Biao Lin, Gang Xu, Zhi-Hua Fu, Hui Wu, Wei Zhou, Shanfu Lu, Qian-Wen Li, Yucheng Jin, Jing-Hong Li, Zhenguo Zhang, Hailong Wang, Zier Yan, Xiaolin Liu, Kang Wang, Banglin Chen, Jianzhuang Jiang
Summary: Single-crystal X-ray diffraction demonstrates the single-crystal-to-single-crystal transformations of imine linkages in a flexible covalent organic framework with interpenetrating quartz topology. The material exhibits large anisotropic positive thermal expansion and can undergo structural transformations upon removal of solvent molecules. Redox-induced linkage conversions improve the stability of the COFs towards strong acids and enable high anhydrous proton conductivity.
Article
Multidisciplinary Sciences
Enyu Wu, Xiao-Wen Gu, Di Liu, Xu Zhang, Hui Wu, Wei Zhou, Guodong Qian, Bin Li
Summary: This study reports a strategy of constructing multiple supramolecular binding sites in a MOF for efficient one-step purification of C2H4 from ternary mixtures. The material exhibits high adsorption capacity and selectivity, and can be easily prepared using a green synthesis method and scaled up for industrial production.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Nie Fang, Siquan Zhang, Zhenchuang Xu, Si Chen, Xu Zhang, Hui Wu, Wei Zhou, Yanchuan Zhao
Summary: Building robust porous molecular architectures through van der Waals interactions is promising for catalysis, chemosensing, and separation techniques. This study presents a molecular porous crystal with layered packing and interdigitation of concaved building blocks. Despite the interdigitation, one-dimensional channels emerge due to the irregular shape and size of the constituent building blocks, showing significant structural flexibility and exceptional thermal and chemical stability.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Baoqiu Yu, Wenliang Li, Xiao Wang, Jing-Hong Li, Rui-Biao Lin, Hailong Wang, Xu Ding, Yucheng Jin, Xiya Yang, Hui Wu, Wei Zhou, Jingping Zhang, Jianzhuang Jiang
Summary: This study reveals the formation mechanism of isomers in covalent organic frameworks through experimental and theoretical simulations. Two rare isomers structures are obtained, and the crucial role of flexible molecular configurations of building blocks in isomer formation is demonstrated.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(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)
