Article
Materials Science, Composites
Fangyan Zhu, Samson Ho-Sum Cheng, Yi Xu, Wenchao Liao, Kangqiang He, Dazhu Chen, Chengzhu Liao, Xin Cheng, Jiaoning Tang, Robert K. Y. Li, Chen Liu
Summary: By designing a dual-salt solid composite electrolyte with superior performance through adjusting components and additives, this research enhances the safety and stability of solid-state lithium metal batteries, leading to longer cycling life and higher capacity retention rates.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yun Guang Zhu, Graham Leverick, Alessandra Accogli, Kiarash Gordiz, Yirui Zhang, Yang Shao-Horn
Summary: In this study, a molten-salt Na-O-2 battery operating at 443 K was demonstrated to have high areal energy and power densities, high energy efficiency, and stable cycling. The dominant discharge product was found to be Na2O2, and the redox activity of nitrate anions in the molten salt was critical for the formation of Na2O2.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Alex Mesnier, Arumugam Manthiram
Summary: Single-crystalline layered oxide cathodes have attracted great research interest due to their improved mechanical strength and chemical stability. However, they suffer from worsened lithium-diffusion kinetics. Doping with foreign elements, such as titanium and tellurium, has been shown to greatly improve ion diffusion. By addressing the kinetic limitations with tellurium doping and surface degradation with aluminum and a localized high concentration electrolyte, stable cycling with a high accessible capacity can be achieved.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Haiping Wu, Peiyuan Gao, Hao Jia, Lianfeng Zou, Linchao Zhang, Xia Cao, Mark H. Engelhard, Mark E. Bowden, Michael S. Ding, Jiangtao Hu, Dehong Hu, Sarah D. Burton, Kang Xu, Chongmin Wang, Ji-Guang Zhang, Wu Xu
Summary: The newly developed polymer-in-salt electrolyte (PISE) provides a method to improve the oxidative stability of lithium metal polymer batteries (LMPBs) while maintaining high charge capacity. The solid-state PISEs prepared with a special process exhibit excellent performance, offering a promising pathway towards high-voltage stable LMPBs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wen-Qiang Ding, Fei Lv, Ning Xu, Meng-Tao Wu, Jian Liu, Xue-Ping Gao
Summary: Solid-state polymer electrolytes are considered the most promising electrolytes for next-generation high-energy rechargeable lithium batteries due to their high safety, good mechanical flexibility, and easy film-formation ability. Researchers have been working to increase the ion conductivity and mechanical properties of PEO at room temperature using the technology strategy of composite polymer electrolytes.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Sheng Zhao, Shenghan Song, Yingqi Wang, Jong Keum, Jiadeng Zhu, Yi He, Alexei P. Sokolov, Peng-Fei Cao
Summary: Single-ion conducting polymer electrolytes (SICPEs) are considered an advanced electrolyte system with high energy efficiency for battery applications, but their relatively low ionic conductivity remains a major bottleneck. Polyethylene oxide (PEO) is recognized as a benchmark for solid polymer electrolytes due to its high salt solubility and reasonable ionic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Xu Xing, Yingzhi Bao, Zhengwei Zhang, Chao Deng, Hao Huang, Zhengsong Lou, Lixia Sun, Zhongcheng Song
Summary: In this research, the cycling stability and rate performance of metal oxides as battery anodes are improved by reducing the particle size of the material. The synthesized nanometer-sized ZnFe2O4 using a molten salt method exhibits a lamellar structure and maintains high capacity and cycle stability as an anode material for lithium-ion batteries.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Alex Mesnier, Arumugam Manthiram
Summary: In the pursuit of Li-ion batteries with higher energy density, ultrahigh-nickel layered oxides are a leading candidate for next-generation cathode materials. Single-crystalline morphology offers a solution to the poor stability of ultrahigh-Ni cathodes. Molten-salt synthesis is an alternative method for obtaining single crystals, accelerating grain growth through the presence of a molten flux without the need for increased temperature. This work provides guidelines for molten-salt synthesis and aims to engender more rigorous investigation into the nature and applications of single-crystal layered oxide cathodes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Jinjin Chen, Qianqian Jin, Youbing Li, Hui Shao, Pengcheng Liu, Ying Liu, Pierre-Louis Taberna, Qing Huang, Zifeng Lin, Patrice Simon
Summary: MXenes are two-dimensional transition metal carbides and/or nitrides with unique physiochemical properties that have attracted extensive interest in various fields. However, current synthesis methods face limitations such as hazardous conditions, high costs, and difficulties in large-scale production. Therefore, the development of a general, safe, cost-effective, and scalable synthesis method for MXenes is crucial. In this study, a fast synthesis method called molten salt-shielded synthesis (MS3) was reported, which successfully synthesized carbide and nitride MXenes. The MS3 method demonstrated flexibility in large-scale production and the prepared MXenes showed excellent electrochemical properties for high-rate Li-ion storage.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Anthony Engler, Habin Park, Nian Liu, Paul A. Kohl
Summary: A series of carbonate-based single-ion conducting, solid polymer electrolytes were synthesized and exhibited high conductivity and stability. The copolymers contained carbonate groups, which provided complexation sites and crosslinking sites to aid Li+ dissociation and improve mechanical properties. The polymer electrolyte with dicarbonate acrylate (DCA) and trifluoromethane sulfonimide methacrylate (MTFSI), UV-cured with a polyethylene oxide crosslinker and plasticized with vinylene carbonate (VC), showed excellent compatibility and stability with lithium, and a lithium metal/lithium iron phosphate full cell with VC demonstrated higher capacity and cycling stability compared to a cell with conventional plasticizers.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Huihui Gan, Yong Zhang, Shaoqiao Li, Wen Zhu, Jirong Wang, Zhigang Xue
Summary: We report a novel gel-state single-ion conducting composite polymer membrane electrolyte with high ionic conductivity, wide electrochemical stability window, and high lithium-ion transference number. It shows effective prevention of dendrite growth and good cyclic stability and rate discharge ability in lithium metal batteries.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Chemical
Yazhou Chen, Chen Li, Dezhan Ye, Yunfeng Zhang, Haifeng Bao, Hansong Cheng
Summary: A gel single-ion composite electrolyte was developed by incorporating Li1.5Al0.5Ge1.5(PO4)(3) nanoparticles to enhance ion conductivity, stability and safety for rechargeable lithium metal batteries. The electrolyte showed increased ionic conductivity and Li+ transference number, leading to homogenously Li+ deposition for dendrite suppression and stable cycle performance in Li symmetric cells.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Dong Ding, Yuta Maeyoshi, Masaaki Kubota, Jungo Wakasugi, Koshin Takemoto, Kiyoshi Kanamura, Hidetoshi Abe
Summary: The study demonstrates a cost-effective synthesis approach of lithium-ion conducting glass ceramic/reduced graphene oxide composite, forming a sandwich-like structure that enhances the rate and cycle performances of the electrodes. The combination of LICGC and rGO provides ultrafast Li-ion and electron pathways, leading to improved rate capability and cyclability for the electrodes.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Kaibo Fan, Xianxin Lai, Zhiqi Zhang, Lili Chai, Qingchao Yang, Guanghao He, Song Liu, Ling Sun, Yong Zhao, Zhengguang Hu, Li Wang
Summary: In this study, dual-salt modification of PVDF-based polymer electrolytes was proposed to enhance lithium ion transport channels, leading to improved ionic conductivity and good application prospects in solid-state lithium metal batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Fei Lv, Yimin Zhang, Mengtao Wu, Yuzong Gu
Summary: A novel LiOH-LiNO3-H3BO3 molten-salt method is proposed to synthesize single-crystal LiNi0.92Co0.06Mn0.02O2 with improved crystal growth and stability. The optimal electrode demonstrates superior electrochemical performance.
Article
Polymer Science
Di Jiang, Na Chu, Yue Zhang, Wei-Dong Wang, Fan-Long Jin, Soo-Jin Park
Summary: A silane coupling agent was used to modify the surface of expanded graphite, which was subsequently used as a thermally conductive filler to fabricate DGEBA/EG composites with high thermal conductivity. The addition of Si@EG significantly improved the thermal conductivity of the composites, but decreased the impact strength.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Hao Sun, Seul-Yi Lee, Soo-Jin Park
Summary: Photocatalytic technology is a promising alternative for water treatments, but its practical application is limited by low efficiency and selectivity. In this study, two-dimensional zinc oxide nanosheets decorated with copper-palladium bimetallic nanoparticles were synthesized for the degradation of organic dyes in water. The prepared composites showed superior photocatalytic performance compared to pristine ZnO nanosheets under visible-light irradiation, attributed to enhanced separation and transfer efficiency of charge carriers. The highest catalytic efficiency was achieved by CuPd/ZnO nanocomposite with 0.5 wt% CuPd, achieving 95.3% removal of methyl orange within 45 minutes. This study provides a new avenue for the design and fabrication of high-performance photocatalysts for water treatments.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Won-Jong Choi, Seul-Yi Lee, Soo-Jin Park
Summary: By using ambient plasma treatment, boron nitride nanosheets (BNNS) can be prepared as fillers in epoxy nanocomposites with high thermal conductivity and fracture toughness.
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: A new Halpin-Tsai model is developed to calculate the modulus of halloysite-nanotube based composites considering the nets of filler and interphase. The calculations match well with experimental facts, and the parametric examinations show acceptable outputs.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Analytical
Ali Mohammadpour-Haratbar, Seyyed Behnam Abdollahi Boraei, Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: Breast cancer is the second most common cancer in the world, and various biosensor strategies, including electrochemical biosensors, have been studied for its recognition. Graphene-based electrochemical biosensors have received increasing attention due to their outstanding mechanical and electrical performances. This review examines the latest advances in graphene-based electrochemical biosensors for breast cancer biosensing, analyzing the detection limit, linear range, and diagnosis techniques for each biosensor, discussing prospects, challenges, and potential strategies for enhancing their performance.
Article
Chemistry, Multidisciplinary
Ari Chae, G. Murali, Seul-Yi Lee, Jeonghwan Gwak, Seon Joon Kim, Yong Jin Jeong, Hansol Kang, Seongmin Park, Albert S. Lee, Dong-Yeun Koh, Insik In, Soo-Jin Park
Summary: Recently, MXene-based wearable hydrogels have become promising candidates for epidermal sensors due to their softness and unique properties. However, it is challenging to achieve reliable sensing performance and prolonged service life due to MXene oxidation in water-containing hydrogels. To address this issue, catechol-functionalized poly(vinyl alcohol) (PVA-CA)-based hydrogels are proposed to inhibit MXene oxidation, resulting in rapid self-healing and superior strain sensing behaviors. The PVA-CA-MXene hydrogel demonstrates potential for real-time motion monitoring and accurate signal classification using deep learning models.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Kugalur Shanmugam Ranjith, Seul-Yi Lee, Seyed Majid Ghoreishian, Nilesh R. Chodankar, Ganji Seeta Rama Raju, Swati J. Patil, Yun Suk Huh, Soo-Jin Park, Young-Kyu Han
Summary: Defect and interface engineering can significantly improve the electrochemical performance of heterostructured electrode materials, as shown in this study on MXene nanosheets-tagged heteroatom-doped graphitic carbons wrapped CoSe2. The composites exhibit excellent performances in hydrogen evolution reaction and supercapacitor applications, with high specific capacity and energy density, as well as superior stability.
Article
Environmental Sciences
Urooj Kamran, Seul-Yi Lee, Kyong Yop Rhee, Soo-Jin Park
Summary: In this study, sustainable nanocomposites were successfully prepared from agriculture waste (rice husk)-derived biochar precursor, and loaded with nickel-doped, base-treated titanium dioxide nanomaterials for efficient lead (Pb2+) removal from aqueous media. The optimized sample (Ni0.01@Na-TiO2/BC) exhibited a high Pb2+ adsorption capability of 122.3 mg g(-1) under the optimum adsorption conditions, attributed to its specific surface area and excess functional sites. The kinetic and isothermal examinations showed that the adsorption of Pb2+ followed pseudo 2nd order and Langmuir models. Furthermore, the optimized sample demonstrated superior adsorption selectivity for Pb2+ ions in a multi-metallic system compared to other ions.
Article
Engineering, Manufacturing
Yinhang Zhang, Bin Ye, Gang Zhou, Ling Li, Wenhui Geng, Lei Yao, Fei Zhang, Junwen Xie, Soo-Jin Park, Zhi Yang, Chengzhe Huang
Summary: In this study, carbon nanotubes were intercalated into oriented graphite nanoplatelets to construct conductive networks for multifunctional thermal management materials. The composite film exhibited high in-plane thermal conductivities and remarkable electrothermal and electromagnetic interference (EMI) shielding performances. It showed a temperature of 140 degrees C under an external voltage of 4V and an electromagnetic interference shielding effectiveness of 2537 dB cm^-1.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Chemistry, Physical
Meiying Cui, Li Wei, Soo-Jin Park, Seok Kim
Summary: To increase the capacitance of an inorganic electrode material, CoFe-layered double hydroxide (LDH) was grafted onto the surface of hexagonal-flower-like NiCo2O4. Various composites with different Co/Fe ratios were grown directly on Ni foam using the hydrothermal method. The composite with a Co/Fe molar ratio of 1:2 (NiCo2O4 @Co1Fe2-LDH) exhibited the best electrochemical performance, with a specific capacitance of 2595 F g-1 at a current density of 1 A g-1. The composite prevented aggregation of CoFe-LDH, leading to high specific capacitance and good stability. The electrode was used in a packaging asymmetric capacitor, resulting in a maximum energy density of 27.33 Wh kg-1 at a power density of 800 W kg-1 and an excellent capacitive retention of 96% even after 5000 charge-discharge cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Mostafa Vatani, Yasser Zare, Nima Gharib, Kyong Yop Rhee, Soo-Jin Park
Summary: This article introduces a novel model for predicting the efficient conductivity of graphene-polymer systems. Simple equations are used to determine the percolation start, the share of graphene and interphase pieces in the nets. The resistances of tunneling and interphase parts are correlated to graphene conductivity. Experimental data analysis and calculations validate the correctness of the model.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: The effects of Lc on the depth of the operative interphase, operative filler concentration, and mechanical percolation start are studied. An equation is proposed to determine the strength of HNT composites with an imperfect interphase and an HNT network. The relationships between B and Lc, HNT size, and percolation start are analyzed. The lowest Lc, lowest percolation start point, slimmest and longest HNTs, and highest interfacial shear strength yielded the highest B values and the toughest samples.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
Junhyung Park, Soo-Jin Park, Seok Kim
Summary: To improve the electrochemical performance of Li-S batteries, sulfur composites are prepared through melt-diffusion of sulfur into porous materials such as MOFs. The effect of reactant concentration on particle size distribution of ZIF-67 is studied, and the performance of the product as a sulfur host for Li-S battery cathode is evaluated.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Seong-Hwang Kim, Sang-Jin Park, Seul-Yi Lee, Soo-Jin Park
Summary: To meet the demand for faster and more powerful computing, effective heat dissipation is crucial for the longevity, reliability, and high performance of electronic systems. Graphitic material-loaded polymeric composites (GPCs) with excellent thermal conductivities are highly sought after in the field of modern electronic packaging materials. However, the enhancement efficiency of GPCs is hindered by filler agglomeration and interfacial thermal resistance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Choong-Hee Kim, Seul-Yi Lee, Soo-Jin Park
Summary: This study successfully prepared activated carbons using coffee grounds and potassium oxalate as a biomass precursor and an activating reagent. The activated carbons showed high CO2 adsorption capacity due to their high microporosity, demonstrating the potential for eco-friendly CO2 capture with energy efficiency and mass production.
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)
