Article
Chemistry, Multidisciplinary
Rajesh Rajagopal, Yuvaraj Subramanian, Kwang-Sun Ryu
Summary: In this study, the efficiency of different particle-sized sulfide solid electrolyte-based cathode composites was investigated. Li7P2S8I solid electrolytes with different particle sizes were prepared and their structural details, surface morphologies, and ionic conductivity were analyzed. A LiNi0.8Co0.1Mn0.1O2 (NCM 811) based cathode composite was prepared and its electrochemical performance in all-solid-state lithium batteries was studied. The results showed that sulfide solid electrolytes with mixed particle size exhibited higher specific capacitance and better electrochemical performance.
Review
Chemistry, Multidisciplinary
Anirudha Jena, Behrouz Bazri, Zizheng Tong, Kevin Iputera, Jheng-Yi Huang, Da-Hua Wei, Shu-Fen Hu, Ru-Shi Liu
Summary: This review focuses on the use of high-voltage cathode materials in all-solid-state batteries, where the redox peak of the cathode components extends beyond 4.7 V. Li-Ni-Mn-O systems are currently being investigated as cathodes for high-voltage cells. Additionally, the compatibility between electrodes and electrolytes at such high potentials is discussed, as well as the importance of controlling anode thickness to reduce solid-electrolyte interphase formation and dendrite growth. The review also discusses strategies for optimizing cell components to minimize electrode-electrolyte impedance and facilitate ion transportation during battery cycling.
Article
Chemistry, Physical
Dongsu Park, Kwangnam Kim, Gin Hyung Chun, Brandon C. Wood, Joon Hyung Shim, Seungho Yu
Summary: This study provides a material design insight for the development of sodium chloride solid electrolytes through systematic assessment. Na3MCl6 exhibits different phases and their stability depends on the type and ionic radius of M. Introducing defects can considerably increase the ionic conductivity of Na3MCl6, showing potential for developing superionic Na chloride solid electrolytes.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Yoshiaki Tanaka, Koki Ueno, Keita Mizuno, Kaori Takeuchi, Tetsuya Asano, Akihiro Sakai
Summary: All-solid-state batteries (ASSBs) with inorganic solid electrolytes (SEs) are attractive for next-generation energy storage. However, the ionic conductivities of halide SEs are not as high as those of other SEs. This study discovers new lithium-metal-oxy-halide materials with extremely high ionic conductivities, comparable to or surpassing those of organic liquid electrolytes. These oxyhalides show promising potential as SE candidates for practical applications of ASSBs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Chun Yuen Kwok, Shiqi Xu, Ivan Kochetkov, Laidong Zhou, Linda F. F. Nazar
Summary: A Li2S/LiVS2 core-shell cathode architecture design is reported for all-solid-state Li-S batteries, which improves the kinetics of Li2S cathode by using the shell as a charge-carrier transport vehicle and electron transfer mediator. The solid-state Li2S cell exhibits good rate capability and capacity retention at room temperature, and high active material loading is demonstrated with stable capacity retention. However, the cycle life is limited under high active material loading.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Kwangnam Kim, Dongsu Park, Hun-Gi Jung, Kyung Yoon Chung, Joon Hyung Shim, Brandon C. Wood, Seungho Yu
Summary: This study systematically investigates the performance and stability of lithium halides Li3MX6 as solid electrolytes for high-voltage all-solid-state Li-ion batteries. The findings suggest that chlorides exhibit high oxidation potential and stability, making them suitable for high-voltage cathode materials.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Wei Weng, Gaozhan Liu, Lin Shen, Xiayin Yao
Summary: The Ti-doped Na(11+x)Sn(2)Sb(1-x)TixS(12) materials showed significantly improved room temperature ionic conductivity compared to the pristine Na11Sn2SbS12, with the highest achieved when x=0.5. This doping strategy also prevented impurity formation and exhibited good air stability and electrochemical stability. Furthermore, all-solid-state sodium batteries using Na11.5Sn2Sb0.5Ti0.5S12 demonstrated high reversible capacity and stable cyclic performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ju Young Kim, Seungwon Jung, Seok Hun Kang, Myeong Ju Lee, Dahee Jin, Dong Ok Shin, Young-Gi Lee, Yong Min Lee
Summary: The study introduces a novel hybrid all-solid-state electrode concept, combining the advantages of composite electrode and diffusion-dependent electrode to achieve high energy density while simplifying the fabrication process. Through the active utilization of lithium-ion transports via percolated solid electrolyte particles and interparticle diffusion of active material particles, the electrode demonstrates significant capacity and energy density, setting a new standard for all-solid-state batteries.
JOURNAL OF POWER SOURCES
(2022)
Article
Multidisciplinary Sciences
Yun Su, Xiaohui Rong, Ang Gao, Yuan Liu, Jianwei Li, Minglei Mao, Xingguo Qi, Guoliang Chai, Qinghua Zhang, Liumin Suo, Lin Gu, Hong Li, Xuejie Huang, Liquan Chen, Binyuan Liu, Yong-Sheng Hu
Summary: Poly(ethylene oxide)-based solid-state electrolytes are promising for next-generation lithium and sodium metal batteries, but face challenges such as low oxidation resistance and low cation transference number. Researchers propose a fluoropolymer, poly(2,2,2-trifluoroethyl methacrylate), to address these issues. The fluoropolymer improves the electrochemical window stability and transference number of the poly(ethylene oxide)-based electrolyte, leading to improved electrochemical performance.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Hiram Kwak, Shuo Wang, Juhyoun Park, Yunsheng Liu, Kyu Tae Kim, Yeji Choi, Yifei Mo, Yoon Seok Jung
Summary: Halide superionic conductors have emerged as promising solid electrolyte (SE) materials for all-solid-state batteries (ASSBs). This review comprehensively summarizes recent advances in halide Li+- and Na+-conducting SEs, including the ionic diffusion mechanism, design strategies, and electrochemical stabilities. Challenges and issues associated with practical ASSB applications are also discussed, along with a perspective on future research directions.
ACS ENERGY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhen Zeng, Jun Cheng, Yuanyuan Li, Hongqiang Zhang, Deping Li, Hongbin Liu, Fengjun Ji, Qing Sun, Lijie Ci
Summary: All-solid-state lithium battery (ASSLB) is considered as a promising candidate for future energy storage system. Constructing composite cathode can effectively improve the ion transport kinetics and enhance the energy density of ASSLBs. This review evaluates the factors, interfacial stability issues, optimization strategies, and fabrication methods of composite cathodes.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Jiwoong Bae, Xiao Zhang, Xuelin Guo, Guihua Yu
Summary: The development of a high-concentration polymeric interlayer in all-solid-state batteries has shown significant improvement in cycle life and Coulombic efficiency by addressing issues like oxidative vulnerability of solid electrolytes and poor charge transport. The interactions between anions and functional groups in the polymer chain in the high-salt-concentration have led to outstanding physicochemical properties, enabling better utilization of high-energy-density batteries.
Article
Chemistry, Inorganic & Nuclear
Jeyne Lyoo, Hyojeong J. Kim, Jooeun Hyoung, Munseok S. Chae, Seung-Tae Hong
Summary: This study reports on the application of Zinc-substituted Li4P2S6 as a Li-ion conductor, which showed significantly improved ionic conductivity compared to unsubstituted Li4P2S6. The improvement was achieved by generating Li-ion deficiency through Zn substitution, enabling Li ions to hop within the crystal structure. The diffusion pathways of Li ions were found to be mostly two-dimensional in this structure.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Xinran Gao, Zheng Xing, Mingyue Wang, Chuanhao Nie, Zhichao Shang, Zhongchao Bai, Shi Xue Dou, Nana Wang
Summary: All-solid-state sodium-ion batteries (ASSSIBs) are highly regarded as a promising choice for future batteries due to their cost-effectiveness and safety. However, the commercialization of ASSSIBs has been hindered by interface issues, particularly at the electrode/electrolyte interface. This review comprehensively analyzes the problems and solutions related to the electrode/electrolyte interface, providing insights on the fundamental requirements of the solid-state electrolyte and methods for interface engineering.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Mian Liu, Xiang Guan, Hongmei Liu, Xiang Ma, Qingping Wu, Sitong Ge, Haitao Zhang, Jun Xu
Summary: Compared with traditional liquid electrolytes, composite solid electrolytes composed of polymer and inorganic particle fillers exhibit better electrochemical stability and safety in lithium-ion batteries. This study focuses on the development of a flexible anion-immobilized modified ceramic-polymer composite solid electrolyte that significantly increases lithium ion transference number and shows promising performance in all-solid-state batteries. The synthesized garnet-lithium single-ion polymer composite particles have great potential in the next generation of all-solid-state lithium metal batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
F. Baakes, M. Luethe, M. Gerasimov, V Laue, F. Roeder, P. B. Balbuena, U. Krewer
Summary: This study developed a thermal runaway model that rigorously models the thermodynamic properties and reactions of each component within a Li-ion battery, considering the vapor-liquid equilibria of a binary solvent mixture for the first time. Simulations revealed a fragile equilibrium in the early phases of self heating and the influence of autocatalytic cycles and contaminants on thermal runaway.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Chemical
Gregor D. Wehinger, Matteo Ambrosetti, Raffaele Cheula, Zhao-Bin Ding, Martin Isoz, Bjarne Kreitz, Kevin Kuhlmann, Martin Kutscherauer, Kaustav Niyogi, Jeroen Poissonnier, Romain Reocreux, Dominik Rudolf, Janika Wagner, Ronny Zimmermann, Mauro Bracconi, Hannsjoerg Freund, Ulrike Krewer
Summary: This paper reports the results of a perspective workshop discussing the current status and future needs for multiscale modeling in reaction engineering. The research topic is highly challenging and interdisciplinary in the chemical engineering community. The paper highlights recent achievements, challenges, and future needs in various areas such as reactors and cells, heterogeneous catalytic processes, and coupling first-principles kinetic models with CFD simulations.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Electrochemistry
Somayeh Toghyani, Florian Baakes, Ningxin Zhang, Helmut Kuhnelt, Walter Cistjakov, Ulrike Krewer
Summary: As the aircraft industry becomes more focused on sustainable aviation, there is increasing interest in hybrid-electric propulsion systems with batteries that have higher energy density to reduce fuel consumption. Next-generation chemistries like oxide-based all-solid-state Li-battery (ASSB) technologies could benefit future aircrafts. However, it is time- and resource-intensive to experimentally produce and evaluate a wide range of design parameters for maximizing the energy density of ASSB. Physics-based modeling offers a more efficient way to identify optimal designs for battery cells with high energy density.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Electrochemistry
Walter Cistjakov, Vincent Laue, Fridolin Roeder, Ulrike Krewer
Summary: All-solid state lithium polymer batteries offer high safety and energy density, and their success depends on an improved design of cathode manufacturing process. A model-based analysis was conducted to study the impact of cathode particle structure on electrochemical cell performance. The study found that the formation of large agglomerates during production of solid-state cathodes significantly affects transport properties.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Janis Geppert, Philipp Roese, Steffen Czioska, Daniel Escalera-Lopez, Alexey Boubnov, Erisa Saraci, Serhiy Cherevko, Jan-Dierk Grunwaldt, Ulrike Krewer
Summary: The microkinetics of the electrocatalytic oxygen evolution reaction were investigated using a dynamic microkinetic model. The study found that the interaction between water adsorption, deprotonation, and oxygen detachment processes limits the overall reaction turnover. Material changes were identified as the main cause of electrocatalytic activity loss.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Energy & Fuels
Fridolin Roeder, Srivatsan Ramasubramanian
Summary: The reliability of battery state estimation and lifetime prediction is crucial for developing operation strategies that enhance battery lifetime, safety, and sustainability. However, due to complex phenomena such as path dependency of battery aging, power capability, voltage hysteresis, and memory effects, achieving reliability in these areas is challenging. This review discusses these phenomena and the frequently applied test protocols, models, and analysis methods, emphasizing the importance of understanding path dependency for battery operation under realistic conditions. Additionally, challenges and potential future research directions are outlined.
Article
Chemistry, Physical
Hoon Seng Chan, Edmund J. F. Dickinson, Tom P. Heins, Juyeon Park, Miran Gaberscek, Yan Ying Lee, Marco Heinrich, Vanesa Ruiz, Emilio Napolitano, Pertti Kauranen, Ekaterina Fedorovskaya, Joze Moskon, Tanja Kallio, Seyedabolfazl Mousavihashemi, Ulrike Krewer, Gareth Hinds, Steffen Seitz
Summary: Various methods based on impedance and nonlinear frequency response are evaluated for determining the state-of-health (SOH) of commercial lithium-ion cells. Frequency response-based measurements provide a spectral representation of the underlying physicochemical processes in the cell, giving evidence about its internal physical state. These methods can be carried out more rapidly and offer more efficiency in determining the SOH of aged lithium-ion cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Janis Geppert, Philipp Roese, Swantje Pauer, Ulrike Krewer
Summary: The performance of electrocatalytic water splitting in polymer electrolyte membrane electrolysis is determined by the microkinetic processes of the oxygen evolution reaction (OER). The surface of the binary transition metal oxides IrO2 and RuO2 mixtures consists of active sites of both Ir and Ru, which undergo the OER mechanism independently and at different overpotentials. By applying microkinetic modeling and parameterization via cyclic voltammograms, a correlation between performance and the relative Ir content is found, which can be explained by two different deprotonation steps.
Article
Energy & Fuels
Felix Schomburg, Robin Drees, Michael Kurrat, Michael A. Danzer, Fridolin Roeder
Summary: This study introduces a novel method to evaluate the growth of the solid-electrolyte interphase (SEI) during the formation of lithium-ion batteries with low experimental effort. By testing coin cells under pseudo-open-circuit conditions and evaluating the differential voltage, the capacity loss caused by SEI formation in the first cycle is estimated. Various methods are compared to identify the SEI growth curve, which is then used to compare different electrolytes. The results indicate that the SEI growth can be explained by a combination of interstitial diffusion and electron tunneling, with the latter dominating at the beginning of formation, and the transition between these mechanisms is influenced by the electrolyte.
Article
Green & Sustainable Science & Technology
Alexander Barke, Walter Cistjakov, Dominik Steckermeier, Christian Thies, Jan-Linus Popien, Peter Michalowski, Sofia Pinheiro Melo, Felipe Cerdas, Christoph Herrmann, Ulrike Krewer, Arno Kwade, Thomas S. Spengler
Summary: The use of novel battery technologies in short-haul electric aircraft supports the aviation sector's sustainable development goals, but the production of these batteries can have adverse environmental and socio-economic impacts. This paper investigates alternative technologies for lithium-sulfur all-solid-state batteries (LiS-ASSBs) in terms of their contribution to sustainable development goals (SDGs). The study applies a life cycle sustainability assessment approach to analyze four LiS-ASSB configurations and compares them to a benchmark lithium-sulfur battery with a liquid electrolyte. The results show that LiS-ASSB technologies generally have a positive contribution to SDG achievement, but the battery configuration with the best technical characteristics may not be the most promising in terms of SDG achievement. Sensitivity analysis reveals that the results are robust against weighting factors within the SDG quantification method.
JOURNAL OF INDUSTRIAL ECOLOGY
(2023)
Article
Engineering, Environmental
Fabian Kubannek, Avital Zhegur-Khais, Songlin Li, Dario R. Dekel, Ulrike Krewer
Summary: We analyze the transport of anions in anion exchange membranes to understand the decarbonation process and its dynamics. The model covers the diffusive and migrative transport of water, carbonate anions, and hydroxide anions. The results reveal the factors affecting the decarbonation dynamics and provide insights into the properties of AEMs that are critical for electrochemical devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Michail Gerasimov, Fernando A. Soto, Janika Wagner, Florian Baakes, Ningxuan Guo, Francisco Ospina-Acevedo, Fridolin Roeder, Perla B. Balbuena, Ulrike Krewer
Summary: Lithium metal batteries hold great promise for future energy storage, but the formation of a stable and efficient Solid Electrolyte Interphase (SEI) remains a challenge. This study utilizes a combination of molecular dynamics, density functional theory, and 3D-kinetic Monte Carlo simulations to analyze the internal species distribution and geometrical aspects of the native SEI. The simulations confirm the layered structure of the SEI and reveal the prevalence of corrosion processes in the formation of the SEI. This novel modeling approach provides valuable insights for improving battery performance and durability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
David Bernhard, Thomas Kadyk, Sebastian Kirsch, Hannes Scholz, Ulrike Krewer
Summary: This work presents a model for predicting and analyzing voltage losses in proton exchange membrane fuel cells during accelerated stress testing. The model consists of two submodels - one describing the degradation of the catalyst active surface using a statistical physics-based approach, and another incorporating the degradation of catalyst activity. The model allows the description of catalyst surface reduction, changes in Tafel slope and exchange current density, and voltage losses.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Daniel Witt, Fridolin Roeder, Ulrike Krewer
Summary: The quality of lithium-ion batteries is affected by the formation of the solid electrolyte interphase (SEI). Fast and economically scalable SEI diagnostics are essential for understanding its impact on cell performance and aging. Combining physicochemical SEI and cell modeling allows for a detailed analysis of both measurement types, providing insights into the SEI's influence on battery performance.
BATTERIES & SUPERCAPS
(2022)
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)