Article
Nanoscience & Nanotechnology
Usman Ghani, Nousheen Iqbal, Ahmed A. Aboalhassan, Chenxin Zhou, Bowen Liu, Jinghan Li, Yan Fang, Tabish Aftab, Jiajun Gu, Qinglei Liu
Summary: The integration of porous hard carbons with carbon nanofibers can address the issues of irregular and irreversible solid electrolyte interfaces in sodium-ion batteries, improving ionic and electronic mobility and initial Coulombic efficiency. The integrated electrodes demonstrate good conductivity, diffusion kinetics, and cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Sukhyung Lee, Bonhyeop Koo, Seokbum Kang, Hongkyung Lee, Hochun Lee
Summary: By developing a Na+ ion concentrated LNCIL electrolyte, the voltage stability and Na dendrite protection of Na metal batteries have been successfully improved. The addition of HFE lowers viscosity, improves separator wettability, facilitates Na+ ion transport, and promotes the involvement of dual anions to suppress Na dendrite growth.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Electrochemistry
Zheng Tang, Siyu Zhou, Yuancheng Huang, Hong Wang, Rui Zhang, Qi Wang, Dan Sun, Yougen Tang, Haiyan Wang
Summary: Carbonaceous materials are promising candidates for lithium (sodium)-ion batteries due to their wide availability, renewable nature, and low cost. However, the low initial Coulombic efficiency (ICE) of high-capacity carbonaceous materials has hindered their practical applications. This review provides a comprehensive analysis of the structural differences and ion storage mechanisms of various carbonaceous materials, identifies the factors contributing to low ICE, and summarizes the strategies to overcome these challenges. The insights and perspectives discussed in this review will greatly contribute to the commercialization of carbonaceous anodes for high-energy Li/Na-ion batteries.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Bing Zhao, Yiqian Liu, Xiaofeng Hu, Yanwei Ding, Xiaoyu Liu, Shoushuang Huang, Wenrong Li, Jiujun Zhang, Yong Jiang
Summary: SnS2/reduced graphite oxide (rGO) composite materials are promising anode candidates for sodium-ion batteries (SIBs) due to their high specific capacities and power densities. However, the formation/decomposition of the solid electrolyte interface (SEI) layer leads to the loss of sodium cations, resulting in poor Coulombic efficiency and decreasing specific capacity. To address this issue, a facile presodiation strategy using sodium-biphenyl/tetrahydrofuran (Na-Bp/THF) and sodium-naphthylamine/dimethoxyethane (Na-Naph/DME) as chemical presodiation reagents has been proposed. The presodiated SnS2/rGO anode shows excellent electrochemical performance, with a high initial Coulombic efficiency (ICE) of 95.6% and an ultrahigh specific capacity of 879.2 mAh g-1 after 300 cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xiuqing Lu, Ping Xu, Weijie Song, Peng Zhou, Mingdong Liao, Guang Zeng, Xiebo Hu, Jianxin Li, Mingyu Zhang, Qizhong Huang, Zhean Su
Summary: A silicon/graphite/reduced graphene oxide (Si/Gt/RGO) composite was prepared, where silicon nanoparticles were embedded in a graphite matrix and wrapped by reduced graphene oxide. The dual carbon (graphite and RGO) protected the silicon nanoparticles and ensured electronic contact, leading to superior electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Guiying Tian, Yuanyuan Song, Xianlin Luo, Zijian Zhao, Fanfan Han, Jiali Chen, Huaming Huang, Na Tang, Sonia Dsoke
Summary: Zinc sulfide (ZnS) embedded in N-doped porous carbon xerogel (ZnS/N-CX) shows improved cycling stability and capacity retention for sodium-ion batteries. The porous N-CX enhances the conductivity of ZnS nanoparticles, leading to higher reversible capacity and longer cycling life. The synergistic approach of supporting/coating N-CX in metal sulfides demonstrates enhanced performance in terms of Na+ storage capacity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Ming Chen, Ping Xiao, Ke Yang, Boxu Dong, Dong Xu, Changyu Yan, Xuejiao Liu, Jiantao Zai, CheeTong John Low, Xuefeng Qian
Summary: A yolk-shell structured Sn/FeSn2@C is constructed by designing an intermetallic FeSn2 layer via thermal reduction of polymer-Fe2O3 coated hollow SnO2 spheres. The FeSn2 layer relieves internal stress, prevents Sn agglomeration, and enables fast electron conduction, resulting in improved electrochemical dynamics and long-term stability. The Sn/FeSn2@C anode exhibits high initial Coulombic efficiency (93.8%) and a high reversible capacity of 409 mAh g(-1) after 1500 cycles at 1 A g(-1), with 80% capacity retention. Additionally, the NVP//Sn/FeSn2@C sodium-ion full cell shows outstanding cycle stability (89.7% capacity retention after 200 cycles at 1 C).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Lei Yan, Jing Wang, Qingjuan Ren, Linlin Fan, Binhua Liu, Lijun Zhang, Liang He, Xiaoxian Mei, Zhiqiang Shi
Summary: This study prepares hard carbon@graphene carbon microspheres as an anode material for sodium-ion batteries and potassium ion batteries using spray drying-direct pyrolysis. The material exhibits high initial Coulombic efficiency and excellent rate performance, making it a promising candidate for commercial applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zeyu Deng, Vipin Kumar, Felix T. Bolle, Fernando Caro, Alejandro A. Franco, Ivano E. Castelli, Pieremanuele Canepa, Zhi Wei Seh
Summary: Battery research often relies on trial-and-error, but understanding of battery interfaces is lacking. To transform research methods, theory and computation can be used together to guide targeted experiments. Automated and intelligent computational tools have been developed to accelerate material description.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Review
Chemistry, Physical
Minghao Zhang, Yu Li, Feng Wu, Ying Bai, Chuan Wu
Summary: Sodium-ion batteries with hard carbon electrodes have potential for large-scale energy storage due to their low cost and inexhaustible sodium reserves. However, the insufficient initial Coulombic efficiency of hard carbon hinders its practical commercialization, with strategies such as structure modification and electrolyte optimization being effective in improving it.
Article
Materials Science, Multidisciplinary
Xiao Yu, Ling Xin, Xianwei Li, Zhenqian Wu, Yong Liu
Summary: By using specific graphite template-induced conditions, we have achieved the growth of completely crystalline carbon from a hard carbon precursor. This carbon shows high initial coulombic efficiency and reversible capacity in NIBs, similar to Li-graphite.
Article
Chemistry, Physical
Yuming Xi, Yangcheng Lu
Summary: This work investigates the irreversible transformation of sodium positions in iron hexacyanoferrate during electrochemical cycling, with electron transfer between high spin and low spin iron states contributing to stabilizing the framework. The study focuses on finding an operating window with minimal transformation to achieve high cycling stability for sodium-rich iron hexacyanoferrate.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Shi Li, Xin-Yu Shi, Zheng-Peng Tang, De-Xin Li, Yu-Chao Zhang, Yao Xiao, Yang Song, Zhuo Zheng, Yan-Jun Zhong, Zhen-Guo Wu, Ben-He Zhong, Xiao-Dong Guo
Summary: By preparing Si@C@graphite materials, the initial Coulombic efficiency (ICE) and cycling performance of silicon-based lithium-ion batteries are simultaneously improved. The carbon layer derived from biopolymer binders with N, O heteroatoms shows the best improvement in Li+ transport kinetics and electrochemical properties, while artificial graphite significantly enhances the overall ICE and reversible capacity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xianwei Li, Jingying Sun, Wenxia Zhao, Yongjian Lai, Xiao Yu, Yong Liu
Summary: This study reports a new phenomenon of graphite-like crystals in hard carbon and indicates that these crystals exhibit extremely high initial coulombic efficiency and reversible capacity in sodium-ion batteries. This breakthrough potentially provides a new pathway for obtaining novel crystalline carbon allotropes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Yihua Tang, Xinxin Wang, Jingjing Chen, Dajian Wang, Zhiyong Mao
Summary: This study presents a novel approach to achieve simultaneous presodiation and B, N co-doping within carbon materials, leading to promising Na+ storage capability and enhanced initial Coulombic efficiency (ICE) up to 96.1%.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yi Feng, Xiaoli Jiang, Lin Tang, Dunmin Lin, Yu Huo, Fengyu Xie, Qiaoji Zheng
Summary: In this study, MNF@Co(OH)2/NF electrocatalysts with core-shell structure were constructed by growing Co(OH)2 nanoarrays in situ on Mn-doped NiFe LDH nanosheets. The optimized electronic structure and high density of active sites induced excellent OER performances in MNF@Co(OH)2/NF, with ultralow overpotentials and small Tafel slope, offering a new perspective for efficient OER electrocatalysts with multi-dimensional nanostructures.
Article
Chemistry, Physical
Mengyi Tang, Yu Liu, Heng Cao, Qiaoji Zheng, Xijun Wei, Kwok Ho Lam, Dunmin Lin
Summary: In this study, efficient Cu2S/Ni3S2 catalysts were synthesized to reduce the overpotential of oxygen evolution reaction (OER), leading to excellent electrochemical performance and durability. This research provides important insights into the application of economically-friendly Cu-based sulfide catalysts in OER electrosynthesis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Xiao Liu, Ransha Deng, Xijun Wei, Zhuo Chen, Qiaoji Zheng, Chenggang Xu, Dunmin Lin
Summary: The bimetallic doped Na3V2-x(Mg0.5Mn0.5)(x)(PO4)(3) material showed high initial discharge capacity, rate capability, and cycling performance, indicating that the Me2+ and Mn2+ co-doped strategy effectively enhances the electrochemical properties of Na3V2(PO4)(3) for high performance sodium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xiao Liu, Juan Gong, Xijun Wei, Ling Ni, Houyang Chen, Qiaoji Zheng, Chenggang Xu, Dunmin Lin
Summary: The MoO42- doped sodium vanadium phosphate material showed high initial capacity, excellent capacity retention, and good rate capability. The doping significantly enhanced structural stability and electronic conductivity, promoting a highly reversible phase transition process during the electrochemical reaction of the material. This study provides new insights into the design of advanced cathodes for high-performance sodium-ion batteries through unique anion doping strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yu Xiang, Qingping Li, Xijun Wei, Xiaoyan Li, Qiaoji Zheng, Yu Huo, Dunmin Lin
Summary: The NiS2/NiSe2 heteroboxes as anodes for SIBs exhibit advantages of exposing more active sites at phase boundaries, accelerating sodium storage kinetics, and maintaining ultralong reversible capacity and good rate capability. This rational construction of phase boundary with unique structure provides guidance for the development of advanced SIBs anode materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Zeng-Xi Yang, Xue-Wei Liang, Dunmin Lin, Qiaoji Zheng, Yu Huo
Summary: Two series of lanthanoid-containing polyoxometalates were synthesized, including neutral organic-inorganic hybrid molecules with Ln6(ampH)4 cores sandwiched by PW11O39 units (1 and 2), and compounds with extended 2D networks where adjacent Ln6 clusters were connected by SiW11O39 moieties (3 and 4). The luminescence performances and magnetic properties of these compounds were systematically investigated, showing characteristic emissions of Ln components and energy transfer from POM segments to Ln3+ centers in 1 and 3. Moreover, all compounds exhibited high stability and electrocatalytic activity towards nitrite reduction.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaoqiu Yue, Yingxia Dong, Heng Cao, Xijun Wei, Qiaoji Zheng, Wei Sun, Dunmin Lin
Summary: Layered double hydroxides (LDHs) with high theoretical capacity have great potential in energy storage applications. In this study, Co2+-doped nickel aluminum layered double hydroxides were designed and prepared, with a multicomponent layer structure that enhances charge transfer kinetics and accelerates ion de-intercalation. The prepared material exhibits excellent performance in terms of specific capacity, energy density, and cycle life, thanks to its unique microstructure and Co2+ doping effect.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yujie Miao, Qiuping Huang, Dan Wen, Dongling Xie, Bo Huang, Dunmin Lin, Chenggang Xu, Wen Zeng, Fengyu Xie
Summary: Designing and developing earth-abundant electrocatalysts with high catalytic activity in alkaline media for the oxygen evolution reaction (OER) is crucial for sustainable energy development. In this study, MIL-53(Fe-Ni)/NF-2200Gs was synthesized under an external magnetic field, exhibiting exceptional catalytic activity with an overpotential of only 174 mV to achieve a geometrical catalytic current density of 10 mA cm(-2) in 1.0 M KOH, surpassing RuO2 and most Fe, Ni-based electrocatalysts.
Article
Electrochemistry
Ransha Deng, Peng Wang, Yuxiang Chen, Qiaoji Zheng, Dunmin Lin
Summary: Transition metal sulfides (TMSs) are promising anode materials for sodium ion batteries (SIBs) due to their high capacity and electrochemical activity. In this study, nanocubes of carbon-encapsulated NiS2/CoS2 embedded in porous nitrogen-doped carbon matrixes (NiS2/CoS2@NC@C) were synthesized as a high-performance anode. The unique material architecture effectively relieves volume variation and improves conductivity, resulting in excellent electrochemical properties.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Ji Chen, Liping Su, Xiaoqin Zhang, Yuxiang Chen, Peng Wang, Qiaoji Zheng, Dunmin Lin
Summary: In this study, ethylene glycol was intercalated into ammonium vanadate to enhance its performance as a cathode material for aqueous zinc-ion batteries. The intercalation of ethylene glycol expanded the layer spacing of the material, providing a larger interlaminar channel for zinc ion diffusion. It also resulted in the formation of nanoflowers composed of ultrathin nanosheets, exposing more active sites for ion and electron transport. This work provides a feasible strategy to develop high-performance layered V-based cathodes for aqueous zinc-ion batteries by regulating the crystal structure, micromorphology, and redox chemistry.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Dan Wen, Yan Ma, Guomei Mu, Qiuping Huang, Xuefeng Luo, Dunmin Lin, Chenggang Xu, Fengyu Xie, Guangzhao Wang, Wenhan Guo
Summary: Improving the efficiency of the anodic oxygen evolution reaction (OER) is crucial for addressing the global energy crisis and greenhouse gas emissions. This paper presents a method for preparing a MIL-53(Fe)@ZIF-67(Co) composite electrode. The hierarchical structure of MIL-53(Fe) and ZIF-67(Co) provides a pathway for efficient electron and mass transport during the OER process. XPS analysis and DFT calculations demonstrate the rapid charge transfer effect between Fe in MIL-53(Fe) and Co in ZIF-67(Co) through oxygen, validating the effectiveness of this transport pathway. The MIL-53(Fe)@ZIF-67(Co) electrode exhibits significant OER performance, with an overpotential of only 193 mV at a current density of 10 mA cm(-2). This study introduces a novel approach for the rational design of multiphase interfaces and the construction of new MOF channel structures.
DALTON TRANSACTIONS
(2023)
Article
Electrochemistry
Yongbo Gao, Daen Zhao, Bin Xie, Yingxia Dong, Xiaoqiu Yue, Qiaoji Zheng, Dunmin Lin
Summary: In this study, a general magnetic field-assisted strategy has been formulated to enhance the charge storage performance of Ni/Co-MOF by transforming it into porous layered Ni/Co hydroxide. The magnetic dipoles of Ni/Co-containing magnetic materials are modulated in the same direction as the magnetic field during alkaline hydrolysis, optimizing the conductivity and morphology of electrode materials. The resulting Ni0.5Co0.5(OH)2-3c hydroxide exhibits improved specific capacity and a hybrid supercapacitor composed of Ni0.5Co0.5(OH)2-3c and active carbon (AC) shows excellent energy density and cycling stability.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaomin Huang, Bin Xie, Xiaoqin Zhang, Heng Cao, Yu Liu, Qiaoji Zheng, Dunmin Lin
Summary: This study presents a feasible strategy to inhibit zinc dendrites by in-situ growing a hydrophilic-zinophilic ZnCr2O4 interface layer on the surface of Zn anodes. The in-situ grown protective layer constrains the diffusion of Zn2+ and improves the kinetics of Zn2+ plating/stripping, resulting in dense Zn deposition without dendrite growth.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuesha Wang, Yanhong Chen, Daen Zhao, Hua Wang, Qiaoji Zheng, Guifen Fan, Xuemei He, Dunmin Lin
Summary: In this research, energy storage ceramics with enhanced energy storage density and efficiency under a low electric field were designed using grain inhibition and dielectric peak flattening engineering. The strategies of multiple co-doping, ion substitution, and lattice distortion were employed to reduce oxygen vacancies, refine grain size, generate polar nanoregions, and promote temperature/frequency stabilities. The resulting ceramics exhibited high energy storage properties, including ultrahigh efficiency and large power and current densities.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Qiang Hu, Jisong Hu, Yuanxia Li, Xinyi Zhou, Shixiang Ding, Qiaoji Zheng, Dunmin Lin, Jingxin Zhao, Bingang Xu
Summary: This study investigates the corrosion mechanism of Zn metal in slightly acidic electrolytes and proposes a method for co-modification of the Zn anode using ZnO@Cu solid solution interface and TS additive. Experimental results show that the modified Zn anode exhibits low polarization and high cycling stability.
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)
