Article
Chemistry, Multidisciplinary
Zongyuan You, Wei Hua, Na Li, Huanyan Liu, Jian-Gan Wang
Summary: This study provides an in-depth electrochemical and structural investigation on the working principle and degradation mechanism of rechargeable aqueous Zn/MnO2 batteries. The results reveal a two-electron reaction pathway for the Mn2+/Mn4+ redox couple and a reversible precipitation/dissolution of flaky zinc sulfate hydroxide (ZSH). The formation of ZSH layer has a dual role, as it prevents the deep dissolution of MnO2 during discharge but promotes the electrochemical deposition of active MnO2 during charging. The degradation of the battery is primarily caused by the corrosion failure of the metallic zinc anode and the accumulation of irreversible ZnMn2O4 phases on the cathode. The findings of this study contribute to the development of practical Zn/MnO2 batteries.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Siliang Chang, Shuai Han, Sen Ji, Shanshan Liu, Ye Liu, Xin Yang, Kai Feng, Jianjiang Hu
Summary: Niobium-based anode materials show promise for use in lithium-ion batteries due to their high specific capacity and safety. However, their low electronic conductivity limits their performance. In this study, a mixed-valent niobium-based phosphate, K3Nb6P4O26@C, was developed as an anode material. The mixed-valent Nb in KNPO enables multi-electron reactions and higher electronic conductivity. The 3D channels in the crystal structure of KNPO facilitate rapid lithium-ion transport. KNPO@C anode demonstrates a high specific capacity and excellent cycling stability, making it a potential practical material for high-performance LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yang Chen, Wenlong Wang, WenBin Zhao, Jinting Xu, PengHui Shi, YuLin Min
Summary: The study recommends applying a coating of nano-semiconductor material graphitic carbon nitride (g-C3N4) to the surface of zinc metal to prevent dendrite growth. The coating evenly disperses the electric field and inhibits the development of the tip effect. As a result, the zinc symmetrical battery exhibits exceptional long-term cycle stability and can be cycled at high current densities for extended periods.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yunpei Zhu, Yi Cui, Husam N. Alshareef
Summary: Aqueous Zn-based batteries are promising due to their low cost and high capacity, but existing designs use excess Zn which reduces energy density. A new anode-free design utilizing nanocarbon nucleation layer enables uniform Zn electrodeposition with high efficiency and stability across various current densities. This innovation opens up new possibilities for implementing Zn-based batteries in energy storage systems.
Article
Crystallography
Haokun Deng, Thapanee Sarakonsri, Tao Huang, Aishui Yu, Katerina Aifantis
Summary: The study reveals that the capacity decay of SnS nanomaterials is caused by lithiation disrupting their morphology and causing dissolution in the electrolyte. As a result, SnS becomes inactive after cycling, leading to continuous capacity decay. To fully utilize these materials, it is necessary to isolate them completely in a matrix.
Article
Chemistry, Physical
Zhichun Yu, Liuyue Cao, Huabo Liu, Da-Wei Wang
Summary: The study shows that the aqueous Zn/LiCoO2 hybrid battery with mildly alkaline ammonia-containing electrolyte exhibits remarkable cycling stability and excellent rate capability, promising exciting prospects for advanced aqueous zinc-based batteries with high voltage and high energy density.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shengkang Zhan, Yiming Guo, Kai Wu, Fanghua Ning, Xiaoyu Liu, Yuyu Liu, Qian Li, Jiujun Zhang, Shigang Lu, Jin Yi
Summary: By regulating the charge density at the Zn anode-electrolyte interface, the issues of severe dendrites and corrosion in AZIBs can be addressed. This study demonstrates the use of amidinothiourea (ATU) as an interfacial charge modifier to achieve uniform and increased charge distribution at the Zn anode-electrolyte interface, resulting in improved cycling life and Columbic efficiency of Zn||Cu batteries.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Energy & Fuels
Susmi Anna Thomas, Mohan Reddy Pallavolu, Mohammad Ehtisham Khan, Jayesh Cherusseri
Summary: Two-dimensional graphitic carbon nitride (g-C3N4) is similar to graphene and has attracted great interest in electrochemical energy storage. It has unique features such as nitrogen-rich environment, abundant resources, good electronic conductivity, excellent physicochemical stability, fascinating electrochemical stability, and environmental friendliness, making it a promising electrode candidate for high-performance rechargeable batteries. The 2D g-C3N4 electrodes exhibit excellent electrochemical performance in terms of high capacity, high energy density, and long cycle life, which are beneficial for metal-ion batteries. In addition, the large surface area, porous architecture, and thin-layer structural features of these materials are favorable for high performance in metal air batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Wontae Lee, Woosung Choi, Soyeong Yun, Eunkang Lee, Won-Sub Yoon
Summary: Research has shown that maximizing the reaction of -OH components by using crystal water can increase the extra capacity obtained from abnormal reactions, further optimizing the development of battery technology.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Heng Lv, Jiali Wang, Xinyu Gao, Yongwen Wang, Yunfei Shen, Ping Liu, Gang Wang, Long Chen, Tiantian Gu
Summary: Aqueous zinc batteries have attracted widespread interest due to their excellent theoretical capacities and high security. Metal-organic frameworks (MOFs) have shown great potential as cathodes for constructing high-performance AZIBs. In this work, ZnMn-SQ MOF was synthesized and demonstrated high capacity and long cycle life as a cathode. Moreover, a modified zinc anode using cubic porous Zn-SQ-3d was used to construct high-performance AZIBs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Heung-Su Kim, Ki-Hun Nam, Cheol-Min Park
Summary: Vanadium diphosphide (VP2) and its graphite-modified composite (VP2@G) were successfully fabricated and evaluated as Li-ion battery (LIB) anodes. The VP2 showed stable cycling performance and high volumetric capacity, while the VP2@G exhibited stable cycling performance, high gravimetric capacity, and fast rate performance, making them promising candidates for superior LIB anodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xinle Cao, Yongjie Cao, Haoyang Peng, Yuanjie Cao, Haifeng Zhu, Nan Wang, Xiaoli Dong, Congxiao Wang, Yao Liu, Jinsong Wu, Yongyao Xia
Summary: A new lithium-niobium germanate LiNbGeO5 material was reported as an anode material for lithium-ion batteries, showing a combination of conversion and alloying mechanisms during discharge/charge process. The anode exhibited good discharge specific capacity, initial Coulombic efficiency, and cycling stability, leading to a full cell with excellent energy density and power density when paired with a specific cathode. This work presents a new reaction mechanism for conversion-type materials in LIBs.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Ceramics
Xian-Sen Lin, Jun-Ru Sun, Lin-Heng Ge, Jun-Wei Xu, Wei-Liang Liu, Man-Man Ren, Fan-Gong Kong, Shou-Juan Wang, Chang-Bin Zhang
Summary: This article introduces a dendrite-free zinc plating material using zinc-modified zeolites as a host and demonstrates its ability to suppress dendrite growth during the plating and stripping process. The novel design improves battery capacity, reduces self-discharge, and enhances cycling stability.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Emre Cevik, Talal F. Qahtan, Sarah M. Asiri, Ayhan Bozkurt
Summary: An intercalation-type Zn-doped Zn-V@Mo-V (ZMV) cathode material is reported, which provides prolonged cycle stability and high storage capacity, addressing the problem of metal oxide cathode dissolution.
ACS APPLIED NANO MATERIALS
(2023)
Article
Mathematics
Cheol-Min Park, Sun Woo Park
Summary: This article discusses the problem of computing the minimal degrees of algebraic numbers in a number field, specifically in degree 4 Galois extensions over Q and triquadratic number fields. The article demonstrates that computing the minimal degrees of non-rational elements in triquadratic number fields is closely connected to solving classical Diophantine problems and understanding various arithmetic properties of elliptic curves.
INTERNATIONAL JOURNAL OF NUMBER THEORY
(2022)
Article
Engineering, Multidisciplinary
In-Su Hwang, Young-Han Lee, Jeong-Myeong Yoon, Yoon Hwa, Cheol-Min Park
Summary: Sodium-ion batteries and potassium-ion batteries are potential candidates for achieving zero-carbon emission as next-generation secondary battery systems. A versatile GaSb nanocomposite anode is introduced, which shows highly reversible initial capacities and superior high-rate capabilities. The nanostructure of the GaSb nanocomposite promotes the electrochemical reaction kinetics and enhances the stability of the electrodes.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Physical
Yunjung Kim, Kyungbae Kim, Hyungeun Seo, Sung-Min Lee, Cheol-Min Park, Jae-Hun Kim
Summary: The study introduces a porous Sn2Nb2O7-graphene oxide composite material as an anode material for both lithium-ion and sodium-ion batteries, showing high reversible capacity and cycling stability. The enhanced electrode performance is attributed to the combination of porous structure and graphene oxide.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Organic
Jeongwoo Sim, Bokyeong Ryou, Minyeong Choi, Changju Lee, Cheol-Min Park
Summary: We describe the electrochemical alpha-amidoalkylation of gamma-lactams based on transition-metal-free cross-coupling via hydrogen atom transfer. The highly selective hydrogen atom transfer process allows for a broad substrate scope and the construction of quaternary centers. Detailed mechanistic studies including experimental and computational studies are provided to support the reaction pathway.
Article
Chemistry, Physical
In-Su Hwang, Young-Han Lee, Vinoth Ganesan, Yoon Hwa, Cheol-Min Park
Summary: This study introduces a new type of GaSb compound anode and optimized nanocomposite fabrication route for improving the performance of lithium-ion batteries. The reaction mechanism of GaSb with Li ions is analyzed using advanced analysis tools, and the electrochemical performance of different nanocomposites is compared. The results show that the GaSb/a-C nanocomposite exhibits superior performance, surpassing conventional graphite anodes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Applied
Eunsoo Yu, Hyungguk Kim, Cheol-Min Park
Summary: The synthesis of heterocycles from 1,2-diarylalkene derivatives through electrosynthesis under metal- and oxidant-free conditions has been discovered. Reactive radical intermediates formed through cathodic reduction or anodic oxidation of specific compounds lead to the formation of various heterocyclic products with good functional group tolerance and high yields. Solvent-dependent chemoselectivity was observed, and mechanistic investigations helped elucidate the reaction mechanisms.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Engineering, Environmental
Dong-Hun Lee, Do-Hyeon Kim, Heechul Jung, Cheol-Min Park
Summary: Germanium is a highly researched anode material for Li-ion batteries due to its high Li storage capacity and electrical conductivity. The Li reaction pathways in germanium have been demonstrated through the analysis of nanocrystalline germanium. The electrochemical performance of a germanium-based nanocomposite, Ge/Al2O3/C, has been enhanced for better Li storage characteristics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Ecology
Sang-Hee Lee, Cheol-Min Park, Sang-Bin Lee
Summary: This article discusses the search and transport efficiency of tunneling patterns in termites from an evolutionary perspective. Using an individual-based model, the study explores the impact of four variables on food transport efficiency and discusses potential optimization strategies and improvements for the model.
ECOLOGICAL MODELLING
(2022)
Article
Chemistry, Organic
Venkatesh Murugesh, Bokyeong Ryou, Cheol-Min Park
Summary: This paper describes the synthesis of unsymmetrical dithioacetals based on gold catalysis. While many methods have been developed for the preparation of symmetrical dithioacetals, methods for accessing unsymmetrical ones are still limited. The authors report a mild synthetic method with a broad substrate scope. Screening of various gold catalysts identified a catalyst that allows for efficient hydrothiolation of both activated and unactivated vinyl sulfides, and the reaction is compatible with both aryl and aliphatic thiols.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Physical
Ki-Hun Nam, Do-Hyeon Kim, Young-Han Lee, Su Choel Han, Jeong-Hee Choi, Yoon-Cheol Ha, Cheol-Min Park
Summary: Layered materials, especially silicon disulfide (SiS2), have received significant attention due to their diverse properties and potential applications. This study demonstrates a simple large-scale synthesis method for layered SiS2 and evaluates its performance as an anode material for Li-ion batteries. The SiS2 nanocomposite exhibits high Li-storage capacity, excellent cycling stability, and good rate capability. Furthermore, when incorporated into a Li-argyrodite solid-state electrolyte, SiS2 shows commendable air/moisture stability and high ionic conductivity. These findings suggest that layered SiS2 has great potential for various applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Hien Duy Mai, Sangmin Jeong, Gi-Nam Bae, Ngoc Minh Tran, Jong-Sang Youn, Cheol-Min Park, Ki-Joon Jeon
Summary: Sulfidation of Pd species on monolayer MoS2 enhances the 1T-phase degree, leading to maximized metal utilization efficiency and exposure of active surface atoms. The resulting PdxSy/1T-MoS2 catalyst exhibits unprecedented high mass activity (-3444 A mg(Pd)(-1)) and turnover frequency (1892 s(-1)), three orders of magnitude higher than commercial Pt/C 10 wt%. The sulfidation-assisted 1T-phase enrichment has significant implications for the design of efficient electrocatalysts through MoS2 phase engineering.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Vinoth Ganesan, Young-Han Lee, Heechul Jung, Cheol-Min Park
Summary: In this study, a nanostructured porous polyhedral carbon (PPC) was synthesized as a carbon matrix for high-capacity Li/Na/K-alloy-based anode materials. The PPC matrix exhibited large initial reversible capacity, fast rate capability, better cyclic performance, high ionic diffusivity, and excellent structural robustness in Li/Na/K-ion batteries, indicating its potential usage in high-capacity alloy-based anode materials.
Article
Energy & Fuels
Young-Han Lee, In-Su Hwang, Jeong-Hee Choi, Cheol-Min Park
Summary: The electrochemical Li/Na/K-ion reaction pathways in Ga for high-performance Ga anodes in alkali-ion batteries are thoroughly elucidated using ex situ analytical tools. Ga exhibits a high Li-ion storage reaction, forming Li2Ga, but poor Na- and K-ion storage reactions, forming NaGa4 and K3Ga13, respectively. An amorphous Ga composite (Ga/C) is fabricated, showing high reversible capacity, long-term Li-ion storage stability, and high rate capability. Three-step confinement of amorphous Ga in the composite during cycling is demonstrated as an enhancement mechanism for high-performance Ga/C anodes for LIBs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jeong-Myeong Yoon, Young-Han Lee, Cheol-Min Park
Summary: This study investigates the use of two structural types of Ga as anodes for Li-ion batteries (LIBs) and develops an optimized Ga-based nanocomposite using a solid-state alloying-dealloying process. The nanocomposite effectively addresses the melting and agglomeration issues of Ga, improving the cycling stability and electrochemical performance of LIBs.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Vinoth Ganesan, Ki-Hun Nam, Jae-Hun Kim, Cheol-Min Park
Summary: A ternary Fe2GeS4 compound has been synthesized and applied as versatile electrodes for rechargeable batteries. The compound exhibits high electrochemical performance and can be used in various battery systems.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
