Review
Electrochemistry
Brindha Ramasubramanian, Subramanian Sundarrajan, Vijila Chellappan, M. Reddy, Seeram Ramakrishna, Karim Zaghib
Summary: This review focuses on the importance, current developments, and future possibilities of carbon-LFP (C-LFP) cathodes in lithium-ion batteries. The addition of carbon materials can enhance the performance of cathode materials, while factors such as carbon size, LFP shape, diffusion, etc. also influence the performance of C-LFP cathodes.
Article
Chemistry, Physical
Wang Zhang, Fu-Ye Du, Yang Dai, Jin-Cheng Zheng
Summary: In this study, atomic simulations were conducted to investigate the effects of lattice strains on the Li+ ion migration energy barrier in olivine phosphates. It was found that biaxial tensile strain perpendicular to the migration path is most beneficial in reducing the energy barrier of Li+ ions. SL3 + 1 and SL1 + 3 were identified as the most favorable paths for Li+ ion migration. This work provides valuable insights for cathode materials and battery design.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Keisuke Shigenobu, Frederik Philippi, Seiji Tsuzuki, Hisashi Kokubo, Kaoru Dokko, Masayoshi Watanabe, Kazuhide Ueno
Summary: Electrolytes that transport only Li ions are important in improving charge and discharge properties in Li secondary batteries. However, borate-based Li ionic liquids induce concentration polarisation, resulting in low transference numbers under anion-blocking conditions. This study confirms that the presence of dynamic exchangeable bonds causes electrochemical polarisation and provides a reference for the design of Li ionic liquids with single-ion conducting properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Shaonan Liu, Song Lu, Yangyang Fu, Weitong Ma, Heping Zhang
Summary: In this study, the heat flow behavior of (Ni1/3Co1/3Mn1/3)O-2 (NCM) and LiFePO4 (LFP) batteries during discharge and charge cycles at different ambient temperatures and discharge rates was investigated using a high precision isothermal microcalorimeter (TAM IV) for the first time. The results showed that low temperatures had a greater effect on the heat flow of the batteries. Furthermore, NCM batteries exhibited higher thermal stability during heating and cooling, as well as with increasing discharge rates. The research provides practical insights for the application, monitoring, and optimization of lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Qing Wang, Yafeng Wang, Shao-hua Luo, Pengwei Li, Shengxue Yan, Yahui Zhang, Xin Liu, Wenning Mu, Fei Teng, Yingling Wang, Xuefei Lei
Summary: This paper investigates a secondary carbon coating technology for LiFePO4/C cathode material, overcoated with soluble starch to enhance performance. The results demonstrate that the soluble starch coating can increase graphitization degree and electrical conductivity, leading to improved electrochemical performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
F. A. Vasquez, N. C. Rosero-Navarro, R. Jalem, A. Miura, Y. Goto, Y. Tateyama, J. A. Calderon, K. Tadanaga
Summary: In this study, a simple and practical method to prepare LFP/C-coated LMNO using microwave irradiation was proposed. The coating significantly improved the crystallographic structure and chemical stability of LMNO, and showed better electrochemical performance in lithium-ion batteries.
APPLIED MATERIALS TODAY
(2023)
Review
Chemistry, Physical
Zhaojin Li, Jinxing Yang, Tianjia Guang, Bingbing Fan, Kongjun Zhu, Xiaohui Wang
Summary: This paper summarizes the recent progress in controlled hydrothermal/solvothermal synthesis of LiFePO4 and explores the relationship between the synthesis conditions and the nucleation-and-growth of LiFePO4. The review covers surface decoration, lattice substitution, and defect control, while also discussing new research directions and future trends in the field.
Article
Energy & Fuels
Nitheesha Shaji, Feng Jiang, Jae Yoon Sung, Murugan Nanthagopal, Taehyung Kim, Byeong Jin Jeong, Soon Phil Jung, Chang Woo Lee
Summary: This study focuses on surface modification of LiFePO4 (LFP) cathode material for lithium-ion batteries (LIBs) using heteroatoms-doped carbon. The results demonstrate that the nitrogen and sulfur dual-doped carbon coating layer enhances the electrochemical activity, cycling stability, and rate capability of the NSC@LFP cathode.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yifang Wu, Shaokun Chong, Yuanzhen Chen
Summary: Understanding the mechanism of Li-insertion/extraction in LiFePO4 batteries is crucial for improving their high-power capability or low-temperature performance. This study reveals the existence of Fe2PO5 and (LiPO3)·2H2O phases as intermediate phases, which assist the Li-ion (de)intercalation process. The Fe2PO5 phase with Fe2+ and Fe3+ ions enables electron conduction near the lithium site, leading to enhanced battery performance. This work suggests that electrolyte additives can increase the supersaturation of intermediate phases and potentially improve the rate or low-temperature performance of LiFePO4 batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Taku Sudoh, Shuhei Ikeda, Keisuke Shigenobu, Seiji Tsuzuki, Kaoru Dokko, Masayoshi Watanabe, Wataru Shinoda, Kazuhide Ueno
Summary: In this study, the effects of hydrofluoroether (HFE) dilution on the Li+ transference number and solution structure of sulfolane (SL)-based localized high-concentration electrolytes (LHCEs) were investigated through dynamic ion correlations and molecular dynamics simulations. The addition of HFE resulted in nano-segregation and fragmentation of the polar ion-conducting pathway in SL-based LHCEs. The Li+ exchange/hopping conduction was hindered by non-ion-conducting HFE-rich domains. Further studies on ion transport in LHCEs would provide a design principle for liquid electrolytes with high ionic conductivity and large Li+-ion transference numbers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Shinji Kondou, Yusuke Sakashita, Xiaoxiao Yang, Kei Hashimoto, Kaoru Dokko, Masayoshi Watanabe, Kazuhide Ueno
Summary: The study found that poly(LiSTFSA) exhibited the highest ionic conductivity in the lowest polar mixture at the highest salt concentration, attributed to a unique conduction phenomenon. This provides insights into a new design strategy for nonaqueous liquid electrolytes for LIBs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Taku Sudoh, Keisuke Shigenobu, Kaoru Dokko, Masayoshi Watanabe, Kazuhide Ueno
Summary: The effects of diluents on the Li+ transference number were investigated. It was found that coordinating diluents effectively improve the Li+ transference number, while non-coordinating diluents have no effect on the ion transport mechanism.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Zi-Liang Chen, Yi-Jing Gu, Gui-Yang Luo, Yong-Lin Huo, Fu-Zhong Wu
Summary: The study investigated the simultaneous synthesis of LiFePO4/C and sulfur-modified reduced graphene oxide (SG) through a one-step hydrothermal method. It was found that SG significantly improved the electrochemical performance of the samples, with sample S2 showing the best specific discharge capacity and stability. The results indicate that wrapping LiFePO4/C with SG contributes to enhancing its electrochemical performance.
Article
Electrochemistry
R. Drummond, C. Cheng, P. S. Grant, S. R. Duncan
Summary: Graded electrodes in Li-ion batteries can improve battery performance by reducing degradation rates and increasing capacity at high discharge rates. However, the mechanisms and conditions for achieving these performance benefits are not fully understood. This study develops an electrochemical model and validates it using experimental data, revealing that a localized carbon-enriched region at the electrode/current collector interface can decrease overpotential distribution and improve charge transfer resistance and impedance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Ceramics
Zhenlu Yu, Xingyu Qu, Aichun Dou, Yu Zhou, Mingru Su, Yunjian Liu
Summary: Li-excess cation-disordered rocksalt oxides with both cationic and anionic redox capabilities have raised challenges in large polarization and poor rate performance due to anionic evolution and poor electronic conductivity. A facile strategy of carbon coating using moderate mass ratio of carbon precursor and calcination temperature has been shown to significantly improve the electrochemical properties of Ni-based cation-disordered oxides, leading to enhanced specific capacity and rate performance. The carbon coating process increases tetrahedron height for easy Li diffusion, reduces polarization, protects cathode, retards SEI layer thickening, and enhances electronic conductivity.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Handong Jiao, Shuqiang Jiao, Wei-Li Song, Xiang Xiao, Dongmei She, Na Li, Haosen Chen, Jiguo Tu, Mingyong Wang, Daining Fang
Summary: Rechargeable Al-ion batteries have been developed with a lightweight self-supporting N-doped carbon rod array (NCRA) as a long-life negative electrode, exhibiting lower areal mass density and longer cycle life compared to Al foil. The ideal skeleton of NCRA matrix facilitates regulating Al nucleation and suppressing dendrite growth, resulting in excellent cycling stability even after 120 hours of cycling in AIBs. Additionally, full cells also show long lifespan and increased Coulombic efficiency.
Article
Chemistry, Applied
Xuefeng Zhang, Mingyong Wang, Jiguo Tu, Shuqiang Jiao
Summary: In order to improve the electrochemical performance of aluminum batteries, a nitrogen-doped porous carbon (N-PC) derived from zeolite imidazolate framework (ZIF-67) is used as an effective host for tellurium to suppress the undesirable shuttle effect. The introduction of reduced graphene oxide (rGO) nanosheets helps to stabilize tellurium by inhibiting the volume expansion of N-PC during charge/discharge cycles, achieving physical encapsulation and chemical confinement of soluble tellurium species. The N-PC-rGO-Te positive electrode demonstrates improved initial specific capacity and long-term cycling performance, showcasing a promising design strategy for inhibiting the chemical and electrochemical dissolution of tellurium in aluminum batteries.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Yang Du, Mingyin Kou, Jiguo Tu, Mingyong Wang, Shuqiang Jiao
Summary: The electrochemical behavior of TiB2 anode in molten CaCl2-CaO was investigated, revealing the formation of a passivation film on the surface of the TiB2 anode during anodic polarization process leading to higher pitting potential than Pt electrode. The corrosion rate of TiB2 anode after 100 h potentiostatic electrolysis was found to be as low as 1.38 x 10(-3) g cm(-2) h(-1), with the passivation film formation mechanism determined as TiB2 + O2- -> Ti(BO3) + O2- -> TiO2 + CaO -> CaTiO3.
Article
Materials Science, Multidisciplinary
Yi-wa Luo, Ming-yong Wang, Ji-guo Tu, Yu Jiang, Shu-qiang Jiao
Summary: The in situ method developed to reduce residual stress and improve mechanical strength of porous Ti alloys during laser additive manufacturing involves double laser scanning immediately after solidification of the molten powder. Rescanning with reduced energy density can lead to significant reductions in residual stress and improved bonding conditions for the alloy. Adjusting the rescanning laser power is necessary to ensure dimensional accuracy when preparing porous Ti with thick cell walls.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Jiguo Tu, Wei-Li Song, Haiping Lei, Zhijing Yu, Li-Li Chen, Mingyong Wang, Shuqiang Jiao
Summary: Rechargeable aluminum batteries (RABs) have attracted increasing attention for their potential advantages of low cost and high safety, although they are still in the early stages of development. Challenges remain in advancing RAB technology and addressing fundamental issues to promote practical applications.
Article
Chemistry, Multidisciplinary
Qian Wang, Jing Wan, Xin Cao, Rui Wen, YuGuo Guo, Wen Liu, Henghui Zhou
Summary: A surface chelation strategy using phytic acid is proposed to create an organophosphorus hybrid flexible solid electrolyte interphase (SEI) layer for lithium metal batteries, improving cycling life and battery performance significantly.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Yunfei Chen, Mingyong Wang, Aijing Lv, Zhonghua Zhao, Jialiang An, Jintao Zhang, Jiguo Tu, Shuqiang Jiao
Summary: High-purity vanadium carbide (VC) was successfully prepared by one-step co-electrolysis of NaVO3 and CO2 in molten salt, offering a novel and green method for the high value-added utilization of vanadium slag and CO2.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Gangyong Li, Mingyin Kou, Jiguo Tu, Yiwa Luo, Mingyong Wang, Shuqiang Jiao
Summary: In this study, a coordination adsorption strategy was employed using CuSe as a positive electrode material to enhance cycling stability and rate capability. Ex situ X-ray photoelectron spectroscopy revealed reversible redox reactions of Cu and Se species, while electron microscopy measurements showed capacity deterioration due to the dissolution of active Cu and Se species. Theoretical calculations identified strong coordination interaction between nitrogen-doped reduced graphene oxide and active species as key in suppressing shuttle effects and achieving excellent cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Jianyang Wu, Tianyi Zhou, Bing Zhong, Qian Wang, Wen Liu, Henghui Zhou
Summary: This research proposes a siloxane-based weakly solvating electrolyte (SiBE) that can regulate the electrolyte/electrode interface (SEI) of Li-metal batteries, leading to dendrite-free Li deposition and long cycle stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Bing Zhong, Jianyang Wu, Longtao Ren, Tianyi Zhou, Zhanjun Zhang, Wen Liu, Henghui Zhou
Summary: This study introduces a stable mixed conductive interphase (MCI) layer on the surface of lithium metal through in-situ surface reaction, effectively inhibiting the growth of lithium metal dendrites and improving the interfacial kinetics. The electrochemical performance of lithium metal batteries is greatly enhanced, with a long lifespan and high capacity retention. This strategy provides a new approach to address dendrite issues and promotes the application of lithium metal batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Miao Zhu, Chen Yin, Qian Wang, Yujing Zhang, Jin Zhang, Henghui Zhou, Lianming Tong, Limin Qi
Summary: This study demonstrates the potential of graphdiyne nanowalls as a stable lithium metal anode in lithium batteries. The vertically aligned GDY nanowalls provide an abundant and evenly distributed lithium nucleation sites, enabling smooth and columnar lithium deposition. The copper-graphdiyne nanowalls electrode exhibits excellent cycling stability and Coulombic efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Qian Wang, Shi Wang, Tiantian Lu, Lixiang Guan, Lifeng Hou, Huayun Du, Huan Wei, Xiaoda Liu, Yinghui Wei, Henghui Zhou
Summary: This review evaluates the advantages and challenges of ultrathin solid polymer electrolytes and summarizes the fundamental requirements for designing and manufacturing high-performance ultrathin SPE. It provides an overview of related cases and critically evaluates the challenges and opportunities in this emerging field.
Article
Chemistry, Physical
Jianyang Wu, Shuping Zhang, Chengkai Yang, Xinxiang Zhang, Mingyue Zhou, Wen Liu, Henghui Zhou
Summary: This study introduces a solvent-based rule to design a multi-component hierarchically-solvating electrolyte, which addresses some challenges in high-energy-density lithium-metal batteries. By adjusting the composition of solvents and salts, this electrolyte achieves high capacity retention and high Coulombic efficiency.
ENERGY STORAGE MATERIALS
(2023)
Proceedings Paper
Metallurgy & Metallurgical Engineering
Yiwa Luo, Yu Jiang, Jun Zhu, Jiguo Tu, Shuqiang Jiao
Summary: The research investigates the effects of laser remelting treatments on a porous Ti-6Al-4V alloy during SLM processes, showing that it can improve the mechanical properties and reduce residual stress. Remelted specimens have lower porosity compared to single-scanned specimens, with the difference increasing with sheet thickness.
TMS 2021 150TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS
(2021)
Article
Chemistry, Inorganic & Nuclear
Haiping Lei, Jiguo Tu, Wei-Li Song, Handong Jiao, Xiang Xiao, Shuqiang Jiao
Summary: The Al-Se battery system shows great promise with a high theoretical specific capacity and average discharge voltage, but suffers from poor reversibility due to Se2Cl2 dissolution leading to capacity fading. By incorporating selenium nanoparticles in mesoporous carbon and modified separators, the Al-Se batteries demonstrate high capacity in initial cycles and good retention over 400 cycles at a high current density.
INORGANIC CHEMISTRY FRONTIERS
(2021)
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)
