Article
Chemistry, Multidisciplinary
Fabian M. Schuett, Sven J. Zeller, Maximilian J. Eckl, Felix M. Matzik, Maren-Kathrin Heubach, Tanja Geng, Johannes M. Hermann, Matthias Uhl, Ludwig A. Kibler, Albert K. Engstfeld, Timo Jacob
Summary: A simple method for fabricating stable 3D-printed micro-reference electrodes using polyvinylidene fluoride is proposed in this study, showing good chemical inertness in strong acids, bases, and non-aqueous solvents. Experimental results demonstrate the versatility and stability of this new class of micro-reference electrodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Yu Ren, Haoyu Li, Yuan Rao, Haoshen Zhou, Shaohua Guo
Summary: Rechargeable aqueous MnO2-based batteries have gained extensive attention due to their low cost, high safety, and competitive specific capacity. However, the complexity in the reaction mechanism and capacity evolution caused by MnO2 dissolution/deposition chemistry poses challenges for commercial applications. Batteries driven by exclusive MnO2 dissolution/deposition reaction offer high energy density and desirable theoretical potential, but face several key challenges.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zengming Qin, Yu Song, Duo Yang, Ming-Yue Zhang, Hua-Yu Shi, Cuicui Li, Xiaoqi Sun, Xiao-Xia Liu
Summary: A new Zn-MnO2 hybrid battery using Al3+ in the sulfate-based electrolyte is proposed, which exhibits excellent electrochemical performance and cycle life while avoiding environmental hazards and corrosion of the Zn anodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Electrochemistry
Oliver Fitz, Christian Bischoff, Manuel Bauer, Harald Gentischer, Kai Peter Birke, Hans-Martin Henning, Daniel Biro
Summary: This study investigates the reaction mechanisms during cycling of aqueous rechargeable Zn//MnO2 batteries through different acidic electrolyte compositions and their pH behavior, showing the significance of pH-relevant ions and zinc hydroxide sulfate precipitation. The innovative approach of coupled cyclic voltammetry and pH measurements provides insights into the redox peaks and chemical reactions during cycling, contributing to the debate of RMs in ARZIBs and other aqueous battery chemistries.
Article
Chemistry, Multidisciplinary
Milica M. Vasic, Milos Milovic, Danica Bajuk-Bogdanovic, Tamara Petrovic, Milica J. Vujkovic
Summary: Vanadium-oxide-based materials with various oxidation states have been studied for their potential applications in rechargeable magnesium ion batteries, showing different performance based on phase composition and metal ion insertion behavior. The sluggish Mg2+ ion kinetics in MgV2O6 was attributed to poor electronic and ionic wiring, leading to complex redox behavior in the materials. Addition of carbon was found to enhance the charge storage behavior of MgV2O6, demonstrating an effective dual strategy for improving performance.
Article
Chemistry, Analytical
Jaime F. Martinez Suarez, Ana M. Gennaro, Maria V. Mirifico
Summary: This article aims to characterize and identify reaction intermediates and final products of cathodic electrolysis of alizarin in different solvents with supporting electrolytes, using various techniques such as CV, UV-Vis, FTIR, NMR, ESR, elemental analysis, and quantum chemical computations. The results confirm some aspects of the reaction mechanism previously published, modify some details, and provide new insights. The identification of intermediates and reaction products, such as AH-CH3 and AH-Na, supports the self-protonation reaction of AH2 center dot - and the occurrence of ion pair formation between AH2? and Na+.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ting Jin, Xiao Ji, Peng-Fei Wang, Kunjie Zhu, Jiaxun Zhang, Longsheng Cao, Long Chen, Chunyu Cui, Tao Deng, Sufu Liu, Nan Piao, Yongchang Liu, Chao Shen, Keyu Xie, Lifang Jiao, Chunsheng Wang
Summary: Water-in-salt electrolytes have expanded the electrochemical stability window, but the cost remains a concern. The low-cost 19 m bi-salts WISE showed promising performance in high-capacity anodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Junjie Zheng, Pei Shi, Chi Chen, Xin Chen, Yi Gan, Jingying Li, Jia Yao, Yin Yang, Lin Lv, Guokun Ma, Li Tao, Hanbin Wang, Jun Zhang, Liangping Shen, Houzhao Wan, Hao Wang
Summary: In this study, Mo-doped a-MnO2 was chosen as the cathode material and a stable N-H bond reinforced interaction was formed via NH4+ intercalation to stabilize the 2 x 2 tunnel structure of Mo-MnO2. Theoretical and experimental studies demonstrated the improved performance of the cathode in terms of cyclic stability and electrochemical performance. This work provides further understanding of the bond interaction between nonmetallic cations in the main materials of electrodes and contributes to the development of aqueous-based zinc-ion batteries with high energy density and long-term cycling capability.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Yan Xu, Jiale Ma, Taoli Jiang, Honghe Ding, Weiping Wang, Mingming Wang, Xinhua Zheng, Jifei Sun, Yuan Yuan, Mingyan Chuai, Na Chen, Zhenyu Li, Hanlin Hu, Wei Chen
Summary: Tuning the solvation structures of Al3+ cations in concentrated aqueous electrolytes can prevent their intercalation into the MnO2 cathode, ensuring high reversibility and improving the performance of MnO2 cathode in aqueous batteries. This approach opens up new possibilities for the development of highly reversible MnO2 cathodes in multivalent metal/MnO2 batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Hyun-gi Jo, Eoyoon Lee, Seulki Han, Jaehong Lim, Minji Jeong, Jinyeon Hwang, Hee-Dae Lim, Hyung-Seok Kim, Hyung Chul Ham, Si Hyoung Oh
Summary: By implementing an internal electrolyte regeneration mechanism, this self-regulating battery effectively controls the production and elimination of hydrogen gas, thereby suppressing pressure increase and electrolyte depletion. The activation of a water-regenerating chemical reaction between MnO2 and H2 via a Pd catalyst helps relieve the endothermicity of the reaction and reverses the Mn2+ and Zn2+ ions in the electrolyte, thus overcoming the safety challenge posed by hydrogen accumulation.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Kunjie Zhu, Zhiqin Sun, Zhaopeng Li, Pei Liu, Xuchun Chen, Lifang Jiao
Summary: In this study, aqueous electrolytes were modified by introducing a co-solvent formamide (FA), which significantly lowered the freezing point at extremely low temperatures. This modification allowed the aqueous sodium ion hybrid batteries to deliver high capacity and long lifespan, making them suitable for charging smartphones.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mahasweta Chatterjee, Sumanta Sain, Atanu Roy, Sachindranath Das, Swapan Kumar Pradhan
Summary: A facile hydrothermal route was used to synthesize Co3O4 nanocrystals with urchin spine-like morphology. The electrochemical properties of the samples were explored in the presence of different electrolytes, showing that NaOH and Na2SO4 (with Hq) electrolytes resulted in high specific capacitances due to additional pseudocapacitive effects. The EIS plots indicated different semicircle diameters for different electrolytes, highlighting the variations in charge transfer resistance and ion-electrode interactions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Electrochemistry
U. V. Siamionau, Y. M. Aniskevich, G. A. Ragoisha, E. A. Streltsov
Summary: The effects of MnO2 electrodeposition on different MnO2 polymorphs from an aqueous zinc sulfate solution with manganese sulfate additive were studied. The results show that even a few cycles of anodic charge and cathodic discharge are enough to cover the entire electrode surface with an X-ray amorphous deposit, with a minor contribution of gamma-MnO2. The fast electrodeposition of MnO2 is caused by Mn2+ anodic oxidation at potentials above 1.8 V (vs. Zn2+/Zn). The choice of MnO2 polymorph for the positive electrode in aqueous zinc-ion battery is less critical when Mn(II) additive is present in the electrolyte.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Shigang Chen, Pan Sun, John Humphreys, Peimiao Zou, Mengfei Zhang, Georgina Jeerh, Shanwen Tao
Summary: A high energy density and good cyclability aqueous Zn-MnO2 battery has been successfully developed using an 'oversaturated gel electrolyte' (OSGE) prepared by cost-effective acetates and poly(acrylic acid). This battery exhibits high stability and reversibility, running successfully for 2000 cycles.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Rui Su, Haiyan Wang, Yunchang Sun, Peizhi Guo
Summary: In this study, two types of MnO2 nanosheets were synthesized and characterized for their electrochemical performance in different electrolytes. It was found that the ultrathin MnO2-NS-N nanosheets exhibited superior capacitance in Na2SO4 electrolyte, while the thick MnO2-NS-K nanosheets showed reasonable performance in both Na2SO4 and MgSO4 electrolytes. Surface capacitance played a significant role in the capacitive behavior of the MnO2 nanosheets.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Pratigya Sharma, Manickam Minakshi Sundaram, Deobrat Singh, Rajeev Ahuja
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Pratigya Sharma, Manickam Minakshi, Jonathan Whale, Annelise Jean-Fulcrand, Georg Garnweitner
Summary: Nickel-based bimetallic oxides, such as NiMoO4 and NiWO4, were synthesized and characterized for their electrochemical properties in pseudo-capacitors. NiMoO4 exhibited superior charge storage performance and better capacity retention after 1000 cycles compared to NiWO4, which was attributed to the reversible redox behavior of NiMoO4 and the formation of a passivation layer composed of WO3 on the electrode in the case of NiWO4.
Article
Materials Science, Multidisciplinary
Ehsan Mohammadpour, Willey Yun Hsien Liew, Nik Radevski, Sunghwan Lee, Nicholas Mondinos, Mohammednoor Altarawneh, Manickam Minakshi, Amun Amri, Matthew R. Rowles, Hong Ngee Lim, Zhong-Tao Jiang
Summary: The study investigated the structural and mechanical properties of coatings at high temperatures using experimental and simulation methods. It was found that Si doping can enhance the hardness and elastic modulus of the coatings, while the addition of Ni reduces these properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Kethaki Wickramaarachchi, Manickam Minakshi Sundaram, David J. Henry, Xiangpeng Gao
Summary: Electrolytic manganese dioxide (EMD) synthesized with alginate as a biopolymer additive demonstrated enhanced energy storage capability for electrochemical supercapacitors. The presence of alginate in higher concentrations altered the morphology and particle size of the EMD composites, resulting in a more favorable condition for binding Mn2+ ions and improving capacitance. When coupled with activated carbon, the EMD composite exhibited excellent capacitance retention over 5000 cycles, showing promising potential for energy storage applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Pratigya Sharma, Manickam Minakshi Sundaram, Teeraphat Watcharatharapong, Sirichok Jungthawan, Rajeev Ahuja
Summary: This study presents the tuning of interfacial region in core-shell nanocomposites with surface energy (de)stabilization, showcasing surface reconstruction in Zn-doped NiMoO4@AWO(4) structures. Experimental results demonstrate superior performance of the asymmetric device composed of Zn-doped NiMoO4 and CoWO4 in supercapacitors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Tondepu Subbaiah, Ponnam Vijetha, Barsha Marandi, Kali Sanjay, Manickam Minakshi
Summary: Current density is crucial in electrorefining cells, and by using turbulence promoters and adjusting flow rate, mass transfer coefficient and overall efficiency can be improved.
Article
Chemistry, Multidisciplinary
Pratigya Sharma, Deobrat Singh, Manickam Minakshi, Saleha Quadsia, Rajeev Ahuja
Summary: Wheat straw-derived carbon was chemically activated using acid or base treatment, resulting in increased electron/hole mobility and capacitance. Acid-treated wheat straw showed a 34.5% increase in capacitance compared to base-treated wheat straw, attributed to the synergistic effects between surface functional groups, electrolyte ions, and the porous electrode.
Article
Chemistry, Multidisciplinary
Kethaki Wickramaarachchi, Manickam Minakshi, S. Assa Aravindh, Rukshima Dabare, Xiangpeng Gao, Zhong-Tao Jiang, Kok Wai Wong
Summary: Porous carbon derived from grape marc was synthesized and activated using KOH, which showed potential for use as supercapacitor. The presence of nitrogen dopant in the activation process enhanced the performance of the carbon material. The study also revealed that the KOH-activated carbon had better morphology, hierarchical pore structure, and larger surface area compared to the ZnCl2-activated carbon.
Article
Materials Science, Multidisciplinary
Ehsan Mohammadpour, Willey Yun Hsien Liew, Nicholas Mondinos, Mohammednoor Altarawneh, Sunghwan Lee, Nik Radevski, Manickam Minakshi, Amun Amri, Hong Ngee Lim, Zhong-Tao Jiang
Summary: This study explores the influence of substrate bias voltage on the mechanical properties of TiSiN coatings, revealing that increasing bias voltage can enhance hardness, Young's modulus, oxidation resistance, and thermal oxidation threshold of the coatings.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Naveed Hassan, Manickam Minakshi, Willey Yun Hsien Liew, Amun Amri, Zhong-Tao Jiang
Summary: This study investigates the thermal properties and stability of a binary salt mixture for thermal energy storage systems. The experimental results show suitable melting point and fusion enthalpy, but significant changes in fusion enthalpy occur over 30 heating-cooling cycles. Thermogravimetric analysis reveals weak thermal stability with considerable mass changes, possibly due to salt decomposition at high temperatures. Therefore, the practical application of this binary salt mixture may be limited.
Article
Automation & Control Systems
Ehsan Razavi, Ali Arefi, David Smith, Gerard Ledwich, Ghavameddin Nourbakhsh, Manickam Minakshi
Summary: This article develops a differential privacy (DP) model for short-term probabilistic energy forecasting at the low-aggregate level. The method first takes probabilistic forecasting elements from a predictor and injects noise into the mean of the forecast based on the Laplace mechanism to guarantee privacy on the mean. The standard deviation is then carefully perturbed (enlarged) to ensure the forecast to be released contains a desirable confidence interval (CI), here 95%.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Chemistry, Physical
Naveed Hassan, Manickam Minakshi, John Ruprecht, Willey Yun Hsien Liew, Zhong-Tao Jiang
Summary: This article investigates the thermophysical properties, thermal repeatability, and thermal decomposition behavior of a binary salt mixture, LiCl-LiOH, as a phase-change material for thermal energy storage. The composition of the binary salt mixture was determined using FactSage software, and its thermophysical properties were studied using a simultaneous thermal analyzer (STA). The results show that the binary salt mixture melts within the range of 269°C to 292°C with a heat of fusion of 379 J/g. Thermal repeatability tests and thermal decomposition analysis demonstrate its good thermal stability. Surface analysis using X-ray photoelectron spectroscopy (XPS) verifies the chemical stability of the binary salt mixture. Overall, this research confirms that the binary salt mixture is a potential candidate for thermal energy storage up to 500°C.
Article
Green & Sustainable Science & Technology
Chinmaya Kumar Sarangi, Abdul Rauf Sheik, Barsha Marandi, Vijetha Ponnam, Malay Kumar Ghosh, Kali Sanjay, Manickam Minakshi, Tondepu Subbaiah
Summary: Tellurium is an important material used in solar cells and thermal imaging devices. It is also used in alloys for electronic applications and as a catalyst in organic compound oxidation. This study developed optimum conditions for recovering tellurium and copper from waste anode slime with high tellurium concentration. The recovery process involves leaching, purification, and electro winning, resulting in high purity tellurium metal that can contribute to a sustainable energy future.
Review
Materials Science, Multidisciplinary
Seema Morab, Manickam Minakshi Sundaram, Almantas Pivrikas
Summary: Organic semiconductors offer a promising solution to overcome the limitations of inorganic semiconductors by providing low-cost, flexible, and lightweight alternatives. This review provides a thorough overview of charge carrier transport in organic semiconductors, focusing on the underlying physical mechanisms and their impact on device performance. Insights into the fundamental principles governing charge carrier behavior in these materials are also presented.
Article
Chemistry, Inorganic & Nuclear
Manickam Minakshi Sundaram, Dominique Appadoo
DALTON TRANSACTIONS
(2020)
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)
