Article
Chemistry, Multidisciplinary
Hsiu-Fen Lin, Si-Ting Cheng, De-Zhen Chen, Nian-Ying Wu, Zong-Xiao Jiang, Chun-Ting Chang
Summary: In this study, a new nanolayer coating material, LiCoMnO4, was proposed to modify the surface of lithium cathode oxide. The designed cathode with nanolayer spinel coating exhibited excellent electrochemical performance, including reversible capacity, rate capability, and cycling ability.
Article
Chemistry, Multidisciplinary
You Jin Kim, So Yeon Ko, Suji Kim, Kyung Min Choi, Won-Hee Ryu
Summary: This study proposes a method to fabricate dual functional coating materials using metal-organic polyhedra (MOP) for stabilizing the surface of lithium-ion battery cathodes and facilitating ion diffusion. The results show that the MOPAC-coated Ni-rich layered cathode exhibits better cycle retention and enhanced kinetic properties compared to the pristine and MOP-coated cathodes.
Article
Chemistry, Physical
Ryan Brow, Anthony Donakowski, Alex Mesnier, Drew J. Pereira, K. Xerxes Steirer, Shriram Santhanagopalan, Arumugam Manthiram
Summary: Nickel-rich cathode materials, despite being a promising choice for electric vehicles, face challenges related to long-term cycle life retention and air stability. This study investigates the use of surface treatments, specifically the coating of LiNi0.9Mn0.05Al0.05O2 cathode materials with lithium phosphate, to improve their performance. The results show that low concentration phosphoric acid coating leads to delayed voltage decay and enhanced discharge capacity during high-voltage cycling.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Jianxiong Lin, Hui Guo, Kun Sun, Liang Fang
Summary: In this study, a simple dry-coating method was used to modify the nickel (Ni)-rich layered oxide cathode in lithium batteries with a dual conductive compound of dot-like Nb12WO33 and film-like lithium boron oxide (Li-B-O). The coating improved the initial efficiency and cycle stability by segregating the cathode from the electrolyte, while the Nb12WO33 provided a fast Li-ion transition channel, enhancing the rate performance of the Ni-rich oxide layer. The modified cathode exhibited significantly improved electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Jing Wang, Qiang Yuan, Zhixin Ren, Chunhao Sun, Junfan Zhang, Ran Wang, Mengmeng Qian, Qi Shi, Ruiwen Shao, Daobin Mu, Yuefeng Su, Jing Xie, Feng Wu, Guoqiang Tan
Summary: This study proposes a thermochemical cyclization strategy to enhance the microstructural and electrochemical stabilities of Ni-rich layered oxides. The cathode design based on this strategy significantly improves the cycling performance and rate capability of LiNi0.8Co0.1Mn0.1O2, making it potentially viable for commercialization in high-energy Li-ion batteries.
Article
Nanoscience & Nanotechnology
John Holoubek, Haodong Liu, Qizhang Yan, Zhaohui Wu, Bao Qiu, Minghao Zhang, Sicen Yu, Shen Wang, Jianbin Zhou, Tod A. Pascal, Jian Luo, Zhaoping Liu, Ying Shirley Meng, Ping Liu
Summary: This study demonstrates the reversible performance of a localized-high-concentration electrolyte (LHCE) based on ether solvents for Li||LMR batteries, improving the cycling performance and cathode-electrolyte interphase chemistry.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Zhonghui Wu, Xinjian He, Junli Zhou, Xiongzhi Yang, Linghao Sun, Hehong Li, Yuede Pan, Lin Yu
Summary: This study presents a novel Ni(OH)2/C/PP separator modification approach for lithium-sulfur batteries, which effectively alleviates the shuttle effect and enhances the electrochemical performance of the batteries, including capacity, rate performance, and cyclability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Mohammad H. Tahmasebi, Lituo Zheng, T. D. Hatchard, M. N. Obrovac
Summary: Layered lithium nickel manganese cobalt oxide or NMC type cathode materials are widely used in lithium-ion batteries. However, the traditional production method requires large amounts of water and can generate waste. An alternative all-dry synthesis method using thermal interdiffusion is presented, which allows for atomic scale mixing and greatly reduces preparation time and cost. The complications and applicability of using a thermally synthesized precursor for layered cathode material are discussed.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Review
Energy & Fuels
Annam Butt, Ghulam Ali, Khadija Tul Kubra, Rehana Sharif, Ayesha Salman, Muzaffar Bashir, Sidra Jamil
Summary: Ni-rich cathode materials have been recognized for their advantages in high energy Li-ion batteries, but their commercialization is hindered by electrochemical cycling issues. Various methods such as doping, coating, and comodification have been adopted to overcome these challenges.
Article
Chemistry, Physical
Zhenghua Zhang, Jiugang Hu, Yang Hu, Hongmei Wang, Huiping Hu
Summary: This work investigates the effect of an advanced electrolyte additive on the performance of Ni-rich LiNixCoyMn1-x-yO2/graphite batteries. The results show that the additive induces the formation of robust electrolyte/electrode interphase, significantly improving the cycling performance and reducing the cell impedance. The capacity retention rate of the cells with the additive-based electrolyte can reach 90% after 600 cycles, which is considerably better than that of baseline batteries (70%). Mechanistic studies reveal that the additive suppresses the formation of fragile Li2CO3 and promotes the formation of more stable LiF, LixPOyFz, and additional organic phosphorus species on the electrode surface, thereby preventing cation disorder and irreversible phase transitions.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Chaeeun Song, Hyeongyu Moon, Kyungeun Baek, Chorong Shin, Kwansoo Lee, Seok Ju Kang, Nam-Soon Choi
Summary: Nickel-rich layered oxides have high potential as cathode materials for high-energy Li-ion batteries, but practical applications are hindered by issues such as metal dissolution and reactive compound formation. This study demonstrates that the supplementation of electrolyte with tert-butyldimethylsilyl glycidyl ether (tBS-GE) can inhibit the interfacial degradation of LiNi0.9CoxMnyAlzO2 (NCMA) cathode and graphite (Gr) anode caused by HF. The tBS-GE scavenges HF and stabilizes the electrode surfaces, while its reaction with CO2 suppresses battery swelling. Adding 0.1 wt% tBS-GE to the electrolyte leads to improved capacity retention and discharge capacity of the NCMA/Gr full cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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
Xinhua Zhai, Panpan Zhang, Hui Huang, Jianfeng Zhou, Xiaobo Li, Buming Chen, Yapeng He, Zhongcheng Guo
Summary: Li-rich layered cathode prepared by co-precipitation and surface modified with amorphous Fe2O3 coating showed improved performance in terms of initial coulomb efficiency, cycle stability, and rate capacity. The Fe2O3 coating also stabilized the electrode/electrolyte interface and lowered the charge transfer resistance, contributing to higher structural integrity and cycling stability of the cathode material.
SOLID STATE IONICS
(2021)
Article
Engineering, Environmental
Feng Wu, Qi Shi, Lai Chen, Jinyang Dong, Jiayu Zhao, Haoyu Wang, Fei Gao, Jing Liu, Hongyun Zhang, Ning Li, Yun Lu, Yuefeng Su
Summary: Researchers propose an economic powder dry coating strategy assisted by a high-energy mixer for the cathode material LiNi0.8Co0.1Mn0.1O2 in lithium ion batteries. By elucidating the specific mechanism nuances between samples under different coating amounts, they reveal the distinct chemical evolution on the cathode surface, leading to significant improvements in cycling stability, rate capability, ambient storage stability, and thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Lixin Xiong, Neil Qiang Su, Wei-Hai Fang
Summary: This study systematically investigates the self-catalytic effect of in-situ electrochemical cobalt doping of Li2O2 and reveals its potential mechanism for enhancing the performance of lithium-oxygen batteries. Theoretical calculations show that Co impurities in the discharge products serve as active sites to promote the formation of Li3O4, switching the nucleation mechanism. Through a comprehensive investigation of the properties of Co-doped Li2O2 and Li3O4 compounds, it is found that Li3O4 exhibits better charge/mass transport and lower overpotential, leading to improved battery performance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Multidisciplinary
Wen Yang, Fei Zhou, Yuchen Liu, Xing Chen
Summary: This study establishes and verifies the electro-thermal model and preheating model of LIBs at low temperatures, finding that the internal resistance of the battery decreases with temperature increase. Additionally, a battery module with polyimide flexible heating film is proposed, which can quickly preheat the battery to the desired temperature.
Article
Thermodynamics
Wen Yang, Fei Zhou, Xing Chen, Kangqun Li, Junjie Shen
Summary: This paper studies the thermal performance of air-cooled battery thermal management (BTM) for honeycomb-type cylindrical lithium-ion battery pack. It proposes the design of an air distribution plate (ADP) for improving temperature consistency and analyzes the cooling performance and velocity distribution using computational fluid dynamics (CFD). The results show that the ADP battery module reduces the maximum temperature and temperature difference compared to the normal module, and the temperature difference can be maintained within 2 K with improved ADP structure and bionic heat sinks.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Kangqun Li, Fei Zhou, Xing Chen, Wen Yang, Junjie Shen, Zebin Song
Summary: This study proposes an improved adaptive cubature Kalman filter algorithm for estimating the state of charge of lithium-ion batteries. By using an electro-thermal model and QR decomposition, the accuracy of the SOC estimation is enhanced. Experimental results under different working conditions and temperatures validate the stability and accuracy of the algorithm.
Article
Energy & Fuels
Qingwei Zhai, Xiaobin Xu, Jizhou Kong, Mingguang Liu, Peng Xu, Behzad Heidarshenas, Qianzhi Wang, Fei Zhou, Hongyu Wei
Summary: Temperature and thermal stress greatly influence the working performance and thermal safety of lithium-ion batteries (LIBs). By simulating and analyzing the thermal behavior and thermal stress distribution during a 1C discharge rate, it is found that the temperature distribution inside the battery is mainly affected by the heat exchange surface and the position of the tabs, with a localized high-temperature region occurring at the positive tab. The thermal stress inside the battery increases rapidly at the beginning and end of the discharging process while increasing slowly in the middle.
Article
Thermodynamics
Xiaobin Xu, Xing Chen, Junjie Shen, Jizhou Kong, Hengyun Zhang, Fei Zhou
Summary: In this study, a biomimetic cephalofoil fin coupled with phase change material was proposed for air-cooling thermal management system of prismatic battery module. The numerical model with experimentally measured heat generation rate and specific heat capacity was used to evaluate performance. The results showed that the use of phase change material and cepha-lofoil fin structure can effectively reduce the maximum temperature of the battery module. Optimization of fin structure parameters can further improve temperature consistency. The use of film heaters can preheat the battery module within a short period of time with good temperature consistency.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Lipeng Xu, Chongwang Tian, Chunjiang Bao, Jinsheng Zhao, Xuning Leng
Summary: The phase structure of the precursor plays a crucial role in the microstructure evolution and stability of Ni-rich cathode materials. In this study, cathode electrode materials with different phase structures and a unique core-shell structure were prepared using sodium lactate as a green complexing agent. The influence of the phase structure of the nickel-rich precursor on the cathode electrode materials was deeply examined. The core-shell- alpha beta-NCM811, with alpha-NCM811 as the core and beta-NCM811 as the shell, showed excellent performance in terms of discharge capacity and rate performance.
Article
Materials Science, Multidisciplinary
Jianguo Qian, Fei Zhou, Maoda Zhang, Qianzhi Wang, Jizhou Kong
Summary: This study constructed three composite films, CrSiCN, CrBCN, and CrSiBCN, using closed-field unbalanced magnetron sputtering technology as protective films on silicon wafers and 316L stainless steel substrates to protect wearable device shell materials from corrosion caused by human sweat. The electrochemical behavior of Si and B element doped films under acidic and alkaline artificial sweat was investigated, along with the microstructural changes of the films. The results showed that the corrosion rate of the films was higher in acidic artificial sweat due to higher concentrations of chloride ions, hydrogen ions, and lactic acid corrosive ions, while the doping of boron element decreased the corrosion rate in acidic sweat and the dense and smooth surface of CrSiCN film enhanced its corrosion resistance in alkaline sweat.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Electrochemistry
Yi-Chao Wang, Zhi-Wei Liu, Peng Xu, Zhuo-Qi Hong, Ji-Zhou Kong, Qian-Zhi Wang, Hong-Yu Wei, Fei Zhou
Summary: This study investigates the use of lanthanide elements to modify a layered oxide cathode through solid-state calcination. Based on the findings, the modified cathodes demonstrated enhanced electrochemical performance, as lanthanide modification played dual roles in doping and coating.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Da Lei, Qianzhi Wang, Fei Zhou, Jizhou Kong, Zhifeng Zhou
Summary: To continuously update the prediction model based on expanding data set solely, this study established an elastic weight consolidation (EWC)-based artificial neural network (ANN) model, which demonstrated good performance on both new and old data. The R2 coefficient of the EWC-based ANN model remained high even after training with expanding dataset, indicating its practicality and time-saving advantage.
SURFACE REVIEW AND LETTERS
(2023)
Article
Engineering, Chemical
Lipeng Xu, Chunjiang Bao, Haobing Zhou, Jun Li
Summary: Nickel-rich ternary cathode materials (NRTCMs) have attracted much attention due to their high energy density and extended cycle life. However, these materials often suffer from poor cycling performance and high-capacity decay rate. This study investigated the modification effect of WO3 on NRTCM lithium batteries and found that the addition of WO3 can effectively reduce the polarization of the material and improve the cycling and rate performance of the battery.
Article
Thermodynamics
Xing Chen, Wen Yang, Junjie Shen, Xiaobin Xu, Fei Zhou
Summary: In order to improve the heat dissipation performance of the battery module, fins are embedded in a hybrid battery thermal management system (BTMS) with phase change material (PCM) and air cooling. The effects of PCM thickness, fin type, airflow velocity, and support frame width on cooling performance and power consumption are investigated. The results show that adding fins significantly decreases the maximum temperature and reduces power consumption. Additionally, the cooling performance of BTMS introducing delayed air cooling is researched, and power consumption is observably reduced.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Analytical
Yi-Chao Wang, Liang Wen, Zhi-Wei Liu, Peng Xu, Si-Lai Zheng, Ming-Guang Liu, Ji-Zhou Kong, Qian-Zhi Wang, Hong-Yu Wei, Fei Zhou, Kostya Ken Ostrikov
Summary: In order to address safety issues, a robust ethanol-based coating process is used to coat LiNi0.8Co0.1Mn0.1O2 cathode material with polyanionic compound TiP2O7. The coating layer improves the Li+ diffusion capability and electrochemical polarization, and protects the electrode from side reactions and dissolution of transition metal ions.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Coatings & Films
Jianguo Qian, Fei Zhou, Kangqun Li, Qianzhi Wang, Jizhou Kong, Zhifeng Zhou
Summary: Nb-Zr-N composite films were successfully deposited on Si (100) wafers and 316 L substrates through DC magnetron sputtering. Orthogonal experiment and mechanical properties optimization were performed to design the deposition parameters. The microstructure and tribological properties of the films were analyzed, revealing a face-centered cubic solid solution mixed structure for the Nb-Zr-N films with Zr concentration ranging from 3 at.% to 14 at.%. The Nb-Zr-N films exhibited high hardness and elastic modulus, with maximum values of 18.2 GPa and 208 GPa, respectively. The film's high yield strength was attributed to solid solution strengthening and grain refining, while the Zr/Nb atomic ratio affected the average grain size and lattice constant. Nb-Zr-N film deposited at the combination parameter (A1B4C4), which had a Zr/Nb atomic ratio of 0.07, showed excellent tribological properties in air.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Jianguo Qian, Fei Zhou, Qianzhi Wang, Jizhou Kong, Zhifeng Zhou
Summary: NbMoSiC gradient films were successfully deposited on 316L stainless steel by adjusting sputtering power of carbon target. The films exhibited a carbon composition gradient and multiphase structures, resulting in improved hardness and corrosion resistance. The enhanced inhibition effect on ion transport during corrosion reaction was also observed. The dense microstructure formed by the carbon composition gradient structure contributed to the improved corrosion resistance of 316L stainless steel.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Energy & Fuels
Yichao Wang, Xiaobin Xu, Zhiwei Liu, Jizhou Kong, Qingwei Zhai, Hossam Zakaria, Qianzhi Wang, Fei Zhou, Hongyu Wei
Summary: In this study, a novel butterfly-shaped channel structure was designed and integrated into the thermal management system of a battery module. The optimal performance of the butterfly-shaped channel was determined through comparison experiments. The study also investigated the effect of coolant mass flow on the thermal performance of the battery module.
JOURNAL OF ENERGY STORAGE
(2023)
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)
