Article
Chemistry, Physical
Arcangelo Celeste, Mariarosaria Tuccillo, Antonino Santoni, Priscilla Reale, Sergio Brutti, Laura Silvestri
Summary: The study introduces a cobalt-free overlithiated LRLO material with outstanding practical specific capacity and high current rates, prepared through a simple synthesis method. This represents a significant advancement in battery material development towards improved performance and better environmental impact.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Nitin Srivastava, Shishir Kumar Singh, Dipika Meghnani, Raghvendra Mishra, Rupesh Kumar Tiwari, Anupam Patel, Anurag Tiwari, Rajendra Kumar Singh
Summary: A series of cathode materials, Li1.2Mn0.6-xNi0.1Co0.1MoxO2 (x = 0, 0.005, and 0.01), were synthesized via the sol-gel method. The Mo-doped cathode, Li1.2Mn0.59Ni0.1Co0.1Mo0.01O2, showed excellent electrochemical performance with high specific discharge capacity, initial Coulombic efficiency, and cyclic stability. The substitution of Mn4+ by Mo6+ resulted in low charge transfer resistance and enhanced stability of the layered structure, leading to outstanding electrochemical performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Katarzyna Redel, Andrzej Kulka, Katarzyna Walczak, Anna Plewa, Emil Hanc, Mateusz Marzec, Li Lu, Janina Molenda
Summary: This paper discusses the advantages of high-voltage Li-rich oxides as cathode materials for Li-ion batteries, analyzes the relationship between the structure evolution and electrochemical performance of the new Li-Mn-Ni-O group, and examines the origin of the extraordinary reversible capacity of Li [Li0.27Mn0.63Ni0.1]O-2.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Shuang Li, Yipeng Sun, Ning Li, Wei Tong, Xueliang Sun, Charles T. Black, Sooyeon Hwang
Summary: In this study, two different types of porous structures in high-voltage lithium, manganese-rich layered cathodes are revealed, along with the significance of the interface between the cathode and electrolyte in solid-state batteries. Nanopores are found near the interface, while nanovoids are formed during in situ Li+ extraction. Despite the development of nanovoids, the layered structure is preserved.
Review
Engineering, Environmental
Huixian Xie, Jiaxiang Cui, Zhuo Yao, Xiaokai Ding, Zuhao Zhang, Dong Luo, Zhan Lin
Summary: This article systematically reviews the recent progresses of spinel phase on Li-rich Layered Oxides (LLOs) and comprehensively summarizes the effectiveness of proposed strategies in improving the electrochemical performance of LLOs, including surface coating, spinel-layered coherent component, and others. Additionally, barriers to the commercialization of LLOs are discussed, and recommendations for future development of LLOs for high-energy-density LIBs are provided.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yali Yang, Chuan Gao, Tie Luo, Jin Song, Tonghuan Yang, Hangchao Wang, Kun Zhang, Yuxuan Zuo, Wukun Xiao, Zewen Jiang, Tao Chen, Dingguo Xia
Summary: Lithium-rich Mn-based layered oxides with quasi-three-dimensional (quasi-3D) Li-ion diffusion channels achieved through the introduction of twin structures show remarkable rate performance and cycling stability, making them promising cathode materials for high-energy density lithium-ion batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Chong Yin, Xiaohui Wen, Liyang Wan, Zhepu Shi, Zhining Wei, Xiao Li, Qingwen Gu, Bao Qiu, Zhaoping Liu
Summary: Surface doping of B via a molten salt method creates a stable reinforcement layer on Li-rich layered oxides, reducing oxygen release effectively; however, this doping does not inhibit internal oxygen redox reactions. Combining X-ray diffraction and transmission electron microscope analyses confirms enhanced structural stability.
JOURNAL OF POWER SOURCES
(2021)
Review
Chemistry, Physical
Xin Cao, Yu Qiao, Min Jia, Ping He, Haoshen Zhou
Summary: This study reviews the potential application of Li-rich and Li-excess oxides as cathode materials for next-generation Li-ion batteries, discusses the challenges in using Li-excess oxides, and explores mechanisms to address these issues. Future research directions in the field are also proposed based on advanced characterizations and theory calculations.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Chunying Xu, Jili Li, Jie Sun, Wanzhen Zhang, Baoming Ji
Summary: The Na-doped LLOs single crystal, N-LLNCMO, with the synergistic effect of single crystal structure and Na doping, exhibits improved electrochemical performances compared to undoped analog, showing higher discharge capacity, capacity retention, and superior rate capability in lithium ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jingteng Zhao, Yuan Liang, Xu Zhang, Zihe Zhang, Errui Wang, Shiman He, Boya Wang, Zhijie Han, Jun Lu, Khalil Amine, Haijun Yu
Summary: This study demonstrates an in situ anchoring + pouring synergistic cathode-electrolyte interphase (CEI) construction using HTCN and TMSP electrolyte additives to alleviate the challenges faced by high-energy-density Li-rich layered oxides in conventional electrolytes. The uniform and robust in situ constructed CEI layer suppresses transition metal dissolution, shields the cathode against diverse side reactions, and significantly improves electrochemical performance with minimal discharge voltage decay. Insights into enhancing the performance of high-energy and high-voltage cathode materials through effective, convenient, and economical electrolyte approaches are provided.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yongqiang Shi, Yilin Lin, Fangyuan Kang, Naoki Aratani, Weiwei Huang, Qichun Zhang
Summary: Organic cathode materials have diverse structures and tunable properties, making them attractive for rechargeable lithium-ion batteries. However, it remains challenging to prepare organic cathode materials with high capacities, long cycling life, and high energy densities. In this study, a novel multinitro-decorated organic small molecule was designed and synthesized, which showed promising performance as a cathode candidate for lithium-ion batteries. The introduction of multiple nitro groups effectively reduced the solubility of the molecule in organic electrolytes, resulting in high specific capacity and stable cycling.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shuwei Li, Zepeng Liu, Lu Yang, Xi Shen, Qiuyan Liu, Zhiwei Hu, Qingyu Kong, Jun Ma, Jiedong Li, Hong-Ji Lin, Chien-Te Chen, Xuefeng Wang, Richeng Yu, Zhaoxiang Wang, Liquan Chen
Summary: This study comprehensively investigated the oxygen redox reaction and structural reversibility of the Ni-rich layered oxide during deep delithiation. It was found that the redox reaction is caused by cation mixing upon delithiation, and the migration of transition metals leads to the formation of the I41 structure. These findings provide insights into the origin of the oxygen redox and its impact on structural transformations.
Article
Engineering, Environmental
Zhengbo Liu, Chaojin Zhou, Jun Liu, Lichun Yang, Jiangwen Liu, Min Zhu
Summary: Element doping is a common method for improving the performance of cathode materials in batteries. This study successfully transformed an O3-type cathode into a P2-type cathode using a simple Li/F co-doping route. The modified P2-type cathode showed higher Na content, solid solution reaction in a high-voltage range, and a stronger TM-F bond. This research provides a new idea and reference for synthesizing high-performance P2-type layered oxide cathode materials for sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yu-Jie Guo, Chao-Hui Zhang, Sen Xin, Ji-Lei Shi, Wen-Peng Wang, Min Fan, Yu-Xin Chang, Wei-Huan He, Enhui Wang, Yu-Gang Zou, Xin'an Yang, Fanqi Meng, Yu-Ying Zhang, Zhou-Quan Lei, Ya-Xia Yin, Yu-Guo Guo
Summary: Chemical modification of electrode materials by heteroatom dopants is crucial for improving storage performance in rechargeable batteries. This study investigates the competitive doping chemistry of boron and aluminum in nickel-rich cathode materials. The atomic radii difference between B and Al leads to different spatial configurations of bonding with lattice oxygen. The findings provide insights into stabilizing the structural evolution and surface chemistry of the cathode.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Qin Wang, Meng Yao, Aipeng Zhu, Qian Wang, Hao Wu, Yun Zhang
Summary: A simple surface modification method is designed to solve the performance degradation and structural collapse issues of Li-rich layered oxides (LRLOs). The modified material (LRLO@LMO@LNO) exhibits an ultra-high discharge capacity and very small voltage attenuation, even at high current densities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Shao-Lun Cui, Ming-Yue Gao, Guo-Ran Li, Xue-Ping Gao
Summary: Research on Li-rich cathode materials shows that understanding the phase transformation process from microscopic to macroscopic levels is crucial for solving capacity decline issues. By focusing on the relationship between dimensions and performance, phase transformation evolution, and anion participation in charge-discharge cycling, high-performance energy storage materials can be designed and structural stability enhanced.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Hafiz Muhammad Umair Arshad, Sheng Liu, Guo-Ran Li, Xue-Ping Gao
Summary: In this study, La2MoO6 (LMO) is introduced as a catalyst into sulfur cathodes for the first time. By promoting the reaction kinetics of polysulfides, LMO effectively improves the discharge capacity and cycle stability of sulfur electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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
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
Chemistry, Physical
Xinyuan Shan, Madison Morey, Zhenxi Li, Sheng Zhao, Shenghan Song, Zhenxue Xiao, Hao Feng, Shilun Gao, Guoran Li, Alexei P. Sokolov, Emily Ryan, Kang Xu, Ming Tian, Yi He, Huabin Yang, Peng-Fei Cao
Summary: This study presents a novel approach to design a high cationic transport polymer electrolyte (HTPE) by in situ copolymerization of regular ionic conducting and single-ion conducting monomers in the presence of a lithium salt. The developed HTPE exhibits impressive properties including high cationic transport number, high ionic conductivity, tolerance of high current density, and high anodic stability. A lithium-metal battery constructed with the developed HTPE shows good cycle stability and operates in a wide temperature range.
ACS ENERGY LETTERS
(2022)
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)
