Review
Chemistry, Multidisciplinary
Jun Pu, Kai Zhang, Zhenghua Wang, Chaowei Li, Kaiping Zhu, Yagang Yao, Guo Hong
Summary: Boron nitride, a conventional insulating material, has recently shown significant progress in the field of electrochemistry, with potential applications in advanced electrochemical devices that could stimulate a new energy revolution. Due to its stability and strength, boron nitride can alleviate various inherent problems in electrochemical systems, providing new possibilities in electrochemical energy technologies.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shaohua Chen, Chenyuan Zhu, Haoyang Gu, Li Wang, Jiajie Qi, Lixiang Zhong, Zhibin Zhang, Chunlei Yang, Guoshuai Shi, Siwen Zhao, Shuzhou Li, Kaihui Liu, Liming Zhang
Summary: The study successfully improved the selectivity of CH4 and achieved efficient electrochemical conversion by designing the interface of monolayer hexagonal boron nitride/copper. Experimental and theoretical calculations both demonstrated that the h-BN/Cu interfacial perimeters provide specific chelating sites to accelerate the conversion of CO.
Article
Chemistry, Physical
Stefan Goodwin, Zachary Coldrick, Sebastian Heeg, Bruce Grieve, Aravind Vijayaraghavan, Ernie W. Hill
Summary: This study presents a method for fabricating pristine monolayer graphene ultramicroelectrodes and characterizing their electrochemical properties. The cyclic voltammetry demonstrated expected behavior for ultramicroelectrodes, while reduction of IrCl62- was used to investigate electron transfer characteristics and reproducibility. Raman spectroscopy confirmed reduced charge doping in the graphene ultramicroelectrodes before and after electrochemical measurements.
Article
Materials Science, Multidisciplinary
Tao Jiang, Ying Wang, Shitao Zhang, Shanshan Shi, Zhao Qian, Xinfeng Wu, Kai Sun, Yuantao Zhao, Wenge Li, Jinhong Yu
Summary: An EP/CF-Ni composite thermal conductive material was prepared by combining electroplating and vacuum liquid impregnation, which increased the thermal conductivity and wear resistance of the material.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Zhenbang Zhang, Maohua Li, Yandong Wang, Wen Dai, Linhong Li, Yapeng Chen, Xiangdong Kong, Kang Xu, Rongjie Yang, Ping Gong, Jianxiang Zhang, Tao Cai, Cheng-Te Lin, Kazuhito Nishimura, Hao Nan Li, Nan Jiang, Jinhong Yu
Summary: As power density increases in electronic devices, the need for high-performance thermal interface materials becomes more urgent. Scalable manufacturing of such materials at low cost remains challenging. In this study, a 3D printing method was proposed to align carbon fibers, resulting in thermal interface materials with high thermal conductivity and significantly improved cooling efficiency compared to advanced commercial materials. This work provides valuable insight into the design of highly thermally conductive composites and their practical applications in electronics thermal management.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Xian Wu, Wei Liu, Fa-guo Shi, Chun Zhang
Summary: Constructing continuous filler networks in a polymer matrix significantly improves the thermal conductivity of the composite. This study fabricated porous Al2O3 frameworks as heat conduction pathways and obtained epoxy/Al2O3 frameworks composites with excellent thermal conductivity. The pre-constructed frameworks and sintering reduced interfacial thermal resistance, resulting in a dramatically enhanced thermal conductivity of the composites. The study provides a promising approach for fabricating thermal conductive polymer composites as electronic package materials.
Article
Materials Science, Multidisciplinary
Kellen D. Traxel, Amit Bandyopadhyay
Summary: The desire for higher application temperatures and complex geometries for metallic materials has driven significant development in additive manufacturing (AM) of metal-ceramic composites. However, there is limited understanding of the process-microstructure-properties relationships for these materials and processing strategies. In this study, the processing window and high-temperature oxidation performance of an in situ reactive, oxidation-resistant titanium metal-matrix composite reinforced with boron nitride (BN) and boron carbide (B4C) were investigated via selective laser melting (SLM) to understand the effects of processing parameters on the in situ reactive characteristics and their influence on build reliability and high-temperature oxidation performance. Process optimization resulted in composites with high relative density and improved high-temperature oxidation resistance compared to the base material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Yiyang Ma, Bingxuan Ji, Xiaofan Lv, Dongbin Xiong, Xuesong Zhao, Haijiao Xie, Zhenghua Zhang
Summary: In this study, boron nitride (BN)-Co3O4 nanosheet cluster (NC) was fabricated to facilitate PMS activation for the rapid removal of ranitidine (RAN). The BN-Co3O4 NC showed highly efficient catalysis performance and could be applied in a wide pH range. The porous structure of BN-Co3O4 NC enhanced the catalytic performance by providing more channels for RAN and PMS molecules. PMS activation by BN-Co3O4 NC was mainly achieved through reduction via active radicals.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Xinze Yang, Jiajing Zhang, Liangjun Xia, Jiahao Xu, Xuenan Sun, Chunhua Zhang, Xin Liu
Summary: This study presents a method to fabricate BN/PU composites using an improved nonsolvent-induced phase separation method with binary solvents, aiming to improve the thermal performance and flexibility of PU. The BN/PU composites exhibited high thermal conductivity and maintained good integrity after 1000 bending cycles, demonstrating good mechanical and thermal reliability for practical use.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Kellen D. Traxel, Amit Bandyopadhyay
Summary: Through adjusting input processing parameters, a oxidation-resistant titanium matrix composite with reinforced microstructure composed of borides, carbides, and nitrides was successfully developed, showing improved hardness and oxidation resistance compared to commercially pure titanium.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Shafi Ur Rehman, Sana Javaid, Muhammad Shahid, Nasir Mahmood Ahmad, Badar Rashid, Caroline R. Szczepanski, Asim Shahzad
Summary: This study focuses on the fabrication of polystyrene/boron nitride composites and melt extrusion to achieve good thermal stability, increased thermal conductivity, and enhanced mechanical properties. The developed polymeric composites are potentially applicable in the electronic industry, especially in electronic devices used for 5G, heat sink, and other aviation applications.
Review
Biochemical Research Methods
Alejandro Garcia-Miranda Ferrari, Samuel J. Rowley-Neale, Craig E. Banks
Summary: This review challenges the misconception that 2D hexagonal boron nitride (2D-hBN) is non-conductive and highlights its potential as a basis for electroanalytical sensing platforms. Recent developments and trends in utilizing 2D-hBN in electrochemistry are summarized, with a focus on future developments of this often overlooked material.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Composites
Chenyang Xu, Erchun Li, Jinjue Zeng, Yue Wang, Tao Wang, Cong Ge, Chen Zhang, Qi Wang, Tian Gao, Yagang Yao, Xiangfen Jiang, Ya Zhang, Qian Cheng, Xue-Bin Wang
Summary: Plasma activations can effectively functionalize BN and change its hydrophobicity to hydrophilicity, achieving interfacial bonding between plasma-treated BN fillers and polyvinyl alcohol molecules. The BN/polyvinyl alcohol composite material shows a high through-plane thermal conductivity of 2.4 W m(-1) K-1 for a filling fraction of 50 wt% BN treated by N-2 plasma, offering a promising approach for the high-efficiency and low-cost fabrication of BN-based composite materials.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Fanghong Yang, Xiaopeng Sun, Xing Zhang, Zhanhai Yao
Summary: The study shows that by reacting h-BN with sulfonyl chloride at room temperature, active groups can be generated, which can then be used to introduce PEG through a DielsAlder reaction. This improves the dispersibility and compatibility of h-BN in epoxy resin matrix, leading to enhanced thermal conductivity of the composites.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Guandong Liang, Guoxun Sun, Jianqiang Bi, Weili Wang, Xiangning Yang, Yonghan Li
Summary: Uniformly dispersed boron nitride nanosheets (BNNSs) reinforced silicon nitride (Si3N4) composites were prepared using surface modification assisted flocculation combined with SPS sintering, which significantly improved the mechanical properties of the composites. Adding amino-modified boron nitride nanosheets (NH2-BNNSs) can greatly enhance the fracture toughness and bending strength of the composite materials compared to monolithic Si3N4.
CERAMICS INTERNATIONAL
(2021)
Article
Energy & Fuels
Yuan-Bo Yang, Peng Chen, Hong-Shi Li, Qian Zhao, Tian-Tian Li, Yue Wu, Yu Zhang, Xue-Ping Gao, Guo-Ran Li
Summary: This study investigates the long-term stability of HTL-free carbon-based perovskite solar cells in the ambient air environment and discovers a reversible degradation phenomenon. The study also finds that the short-circuit current density and open-circuit voltage are minimally affected, while only the fill factor is reduced. Furthermore, a minute-heating treatment can eliminate the reversible degradation.
Article
Materials Science, Multidisciplinary
Zhenyu Wang, Hailun Ge, Sheng Liu, Guoran Li, Xueping Gao
Summary: This study introduces a high-entropy alloy as a catalytic host to activate the electrochemical performance of the sulfur cathode in lithium-sulfur batteries, enhancing the utilization of sulfur. The high-entropy alloy nanocrystallites on nitrogen-doped carbon exhibit high electrocatalytic activity, promoting the conversion of solid sulfur to soluble intermediate products and increasing the reversible capacity of the battery when the whole cathode is used as the active material.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Electrochemistry
Shao-Lun Cui, Dan Feng, Zhen-Xue Xiao, Sheng Liu, Xue-Ping Gao, Guo-Ran Li
Summary: This study proposes a method of improving the cycle stability and structural stability of Ni-rich layered cathode materials by using Eu2O3-doped Li4SiO4 as a coating layer. The doping of Eu2O3 increases the ion conductivity and stability of the coating layer. The optimal cycle and rate performance are achieved when the doping amount of Eu2O3 is 10 mol% of Li4SiO4.
ELECTROCHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Xue Liu, Jian Liu, Guo-Ran Li, Sheng Liu, Xue-Ping Gao
Summary: In this study, a dimensionally stable Li-Mg/Cu composite electrode was fabricated, which showed long-term stability in terms of dimensional change and surface morphology. The use of Cu foam and Li-Mg alloy contributed to the stable structure and uniform Li plating within the composite.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Ying-Jun Zhang, Hue-Min Wang, Xue Liu, Chang Zhou, Guo-Ran Li, Sheng Liu, Xue-Ping Gao
Summary: In this study, a lithium alloy-based composite electrode was successfully fabricated, which exhibited structural stability and improved performance in secondary lithium batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Hui-Min Wang, Zhen-Yu Wang, Chang Zhou, Guo-Ran Li, Sheng Liu, Xue-Ping Gao
Summary: In this study, researchers developed a functional gel polymer electrolyte for lithium-sulfur batteries. The electrolyte consists of a PVDF-HFP polymer matrix and a gamma-Al2O3 three-dimensional skeleton, providing structural and thermal stability. PVDF-HFP facilitates lithium-ion transport, while gamma-Al2O3 suppresses the shuttling of LiPs through strong interactions. Furthermore, gamma-Al2O3 improves ionic conductivity. This research offers a promising strategy for fabricating multifunctional gel electrolytes for high-energy lithium-sulfur batteries.
SCIENCE CHINA-MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shao-Lun Cui, Zhen-Xue Xiao, Bai-Chuan Cui, Sheng Liu, Xue-Ping Gao, Guo-Ran Li
Summary: A Li-rich Mn-based layered oxide cathode (LLO) is a promising cathode material for high-energy lithium-ion batteries. However, it faces challenges such as sluggish kinetics, oxygen evolution, and structural degradation. In this study, an interfacial optimization of primary particles is proposed to improve ion and electron transport simultaneously. The modified interface containing AlPO4 and carbon enhances Li+ diffusion and reduces charge-transfer resistance, leading to improved charge-transport kinetics. The optimized LLO cathode exhibits a high initial Coulombic efficiency of 87.3% and superior high-rate stability with 88.2% capacity retention after 300 cycles at a 5C high rate.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Shuo Wang, Qian Zhao, Abhijit Hazarika, Simiao Li, Yue Wu, Yaxin Zhai, Xihan Chen, Joseph M. Luther, Guoran Li
Summary: A detailed picture of temperature dependent behavior of Cs(x)FA(1-x)PbI(3) perovskite quantum dots is constructed by in situ optical spectroscopic and structural measurements. The thermal degradation mechanism depends on both the exact chemical composition and the ligand binding energy. Cs-rich quantum dots undergo a phase transition from black gamma-phase to yellow delta-phase, while FA-rich quantum dots directly decompose into PbI2. Quantum dot growth is observed at elevated temperatures. FA-rich quantum dots exhibit stronger electron-longitudinal optical phonon coupling, leading to a higher probability of exciton dissociation compared to Cs-rich quantum dots. Surface ligand-induced strain enables full-range A-site tuning.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Baichuan Cui, Zhenxue Xiao, Shaolun Cui, Shuai Hao, Sheng Liu, Xueping Gao, Guoran Li
Summary: This study focuses on improving the cycling stability and safety of quasi-solid-state lithium metal batteries by synthesizing lithiated phosphoryl cellulose nanocrystals (PCNC-Li) and incorporating them into poly(vinylidene fluoride) (PVDF) gel polymer electrolyte. The PCNC-Li forms a uniform network structure on the surface of PVDF membranes, regulating the transport of lithium ions and enhancing the stability of the lithium anode interface. Additionally, the PCNC-Li coating layer improves the thermal stability and mechanical strength of PVDF membranes, thus enhancing the safety of lithium metal batteries. This work provides a new option for fabricating a better composite gel polymer electrolyte for lithium metal batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yicheng Jiang, Sheng Liu, Xueping Gao, Guoran Li
Summary: In this work, cobalt-edged nickel alloy is designed as a host material for sulfur cathodes in lithium-sulfur batteries to manipulate the behavior and morphology of Li2S deposition. The difference in catalytic kinetic characteristics of Co and Ni and the geometrical effect of Co-edged Ni alloy result in a well-spaced morphology, preventing premature surface passivation and improving sulfur utilization and rate capability of the cathodes. This study provides insights for developing new host materials and understanding the existing works in lithium-sulfur batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Hui-Min Wang, En-De Fu, Guo-Ran Li, Sheng Liu, Xue-Ping Gao
Summary: A multifunctional gel polymer electrolyte (ANPD-GPE) composed of Nafion-coated Al2O3 nanofibers and in-situ polymerized 1,3-dioxolane (DOL) was fabricated to improve the performance of high-energy lithium-sulfur (Li-S) batteries. The ANPD-GPE effectively solves the issues of polysulfide shuttle, unstable lithium anode, and safety hazards in traditional liquid electrolytes. The ANPD-GPE demonstrates improved electrochemical performance in terms of cathode cyclability and lithium anode stability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Ya-Qi Wang, Hui-Min Wang, Yi-Cheng Jiang, Guo-Ran Li, Sheng Liu, Xue-Ping Gao
Summary: In this study, high-entropy oxide (HEO) nanofibers were used as sulfur hosts for the first time, showing good rate capacity and cycling stability due to strong chemical interaction with lithium polysulfides. The tap density of the sulfur/HEO composite was also significantly higher than that of the sulfur/CNT composite, leading to a higher volumetric capacity. This research provides a promising strategy for improving the volumetric energy density and electrochemical performance of lithium-sulfur batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xuewen Wu, Shaolun Cui, Minfei Fei, Sheng Liu, Xueping Gao, Guoran Li
Summary: In this work, an inverse-opal structured TiO2 membrane is designed to regulate the electrodeposition behavior of lithium metal, providing a fundamental solution to the poor cycle stability and lithium dendrite safety problems. Through homogenizing the mass transfer process, reducing the desolvation barrier, and confining the migration of lithium atoms, the electrodeposition process of lithium metal is essentially changed, eliminating the possibility of lithium dendrite formation.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Yang-Yang Wang, Yu-Yang Wang, Sheng Liu, Guo-Ran Li, Zhen Zhou, Ning Xu, Meng-Tao Wu, Xue-Ping Gao
Summary: This study demonstrates a feasible approach to enhance the stability of high-Ni layered oxide cathodes by immobilizing surface oxygen with yttrium and stabilizing bulk oxygen with aluminum. The stabilized oxygen framework reduces structure deterioration, parasitic reactions, and potential polarization during battery operation, leading to high reversible capacity, impressive cycle ability, and improved thermal stability. The synergistic effect of yttrium and aluminum, with strong oxygen affinities, raises the energy barrier for oxygen evolution and contributes to the enhanced electrochemical performance of high-Ni oxide cathodes.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Li Yuan Tian, Ze Zhang, Sheng Liu, Guo-Ran Li, Xue Ping Gao
Summary: The use of high-entropy oxide nanofibers as a catalytic host for sulfur in lithium-sulfur batteries leads to high gravimetric capacities, excellent rate capability, and desirable cycle stability. The composite also demonstrates ideal sulfur utilization and good cycle stability under harsh operating conditions, achieving a high volumetric capacity due to its high tap density.
ENERGY & ENVIRONMENTAL MATERIALS
(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)
