Article
Energy & Fuels
Qi Zhang, Dafang Wang, Erik Schaltz, Daniel-Ioan Stroe, Alejandro Gismero, Bowen Yang
Summary: This paper proposes a SOC estimation model that does not rely on calendric aging conditions, such as storage SOC and storage temperature, to estimate the State-of-Health (SOH) of a battery cell, whose aging history may not be available. The aging mechanisms of lithium-ion batteries under different calendric aging conditions are analyzed to investigate their effects on battery internal behaviors. A neural network is used to build the SOH estimation model, and the accuracy of the model is tested using SOH indicators obtained at different aging conditions and SOC levels. The results show that the model accuracy is not significantly affected by aging condition differences or SOC differences between trained and tested data sets.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Hector Beltran, Pablo Ayuso, Nuria Vicente, Braulio Beltran-Pitarch, Jorge Garcia-Canadas, Emilio Perez
Summary: This study investigates the aging-induced degradation of commercial Li-ion pouch cells with lithium nickel-manganese-cobalt-oxide-based cathodes and graphite anodes under various operating conditions. The research develops a detailed equivalent electrical circuit model and validates it using in situ electrochemical impedance spectroscopy. The study confirms the dependence of the cells' capacity fade on factors such as temperature and state-of-charge, and highlights the unusual finding that cells held at 95% state-of-charge exhibit lower degradation than those at 70%. The research introduces a high performing calendar aging model that can be useful for battery management systems.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Qi Zhang, Dafang Wang, Erik Schaltz, Daniel-Ioan Stroe, Alejandro Gismero, Bowen Yang
Summary: Electrochemical Impedance Spectroscopy (EIS) is a powerful tool for explaining degradation mechanisms and estimating State-of-Health (SOH) of lithium-ion batteries. This paper introduces the distribution of relaxation times (DRT) method for decoupling the internal behaviors of Li-ion batteries based on EIS data and analyzes degradation mechanisms under different aging conditions. Correlation analyses between SOH and parameters extracted from DRT plots and EIS data are used to achieve highly accurate SOH estimation. The results provide a theoretical basis for developing battery degradation models.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Chusheng Lu, Jian Hu, Yuanyi Zhai, Haibin Hu, Hangyu Zheng
Summary: This paper proposes a SOC estimation method based on the linearization of voltage hysteresis curve (EMBL) and establishes a novel equivalent model of lithium-ion battery based on a linear neural network (LEM). The superior performance of the LEM is verified through intermittent charging and discharging experiments. Furthermore, this paper constructs a SOC estimation method based on the linearization of voltage hysteresis curve and carries out equalization experiments with voltage equalization and SOC equalization. The results demonstrate that SOC equalization can significantly reduce energy consumption compared to voltage equalization, and the EMBL-based SOC equalization slightly outperforms the extended Kalman filter (EKF) algorithm-based SOC equalization in terms of energy consumption reduction.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Sun Woo Park, Hyunju Lee, Yong Sul Won
Summary: This paper proposes a data-driven approach to calculate a new aging parameter for Lithium-ion batteries by combining the ideas of incremental capacity analysis and voltage drops in discrete time. Two forecasting algorithms are built to track the state of charge and state of health of the batteries using this new parameter.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Friedrich von Buelow, Markus Wassermann, Tobias Meisen
Summary: This study surpasses existing battery state of health (SOH) forecasting methods by using battery pack data from real-world vehicle operation. The results show that a state-of-the-art SOH forecasting method based on histogram features works not only on laboratory battery cell data, but also on real-world battery system data.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Bo Yang, Yucun Qian, Qiang Li, Qian Chen, Jiyang Wu, Enbo Luo, Rui Xie, Ruyi Zheng, Yunfeng Yan, Shi Su, Jingbo Wang
Summary: The rapid development of lithium-ion battery technology has led to its widespread use in electric vehicles, aerospace, and mobile electronics. Accurate estimation of the state of health of lithium-ion batteries is a challenging task, and previous reviews have had deficiencies in classification, summary, and evaluation of estimation methods. This comprehensive review investigates and discusses 190 relevant studies, providing a thorough analysis of different perspectives on the definition of state of health, representative battery models, commonly used evaluation criteria, and explicit estimation schemes. The review also addresses the main problems and challenges in state of health estimation, proposes future development trends, and summarizes essential public datasets. Overall, this review offers valuable guidance for researchers and engineers working on state of health estimation and promotes further development in this field.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Energy & Fuels
Yu Guo, Dongfang Yang, Kun Zhao, Kai Wang
Summary: This paper proposes a method that combines bidirectional long short-term memory (BiLSTM) neural network and attention mechanism for estimating the state of health (SOH) of lithium-ion batteries (LIBs). By extracting features from the incremental capacity (IC) curve, the proposed method achieves accurate estimation of battery capacity's SOH. Experimental results show that the method has low root mean square error (RMSE) and mean absolute percentage error (MAPE).
Article
Energy & Fuels
Jialong Liu, Qiangling Duan, Kaixuan Qi, Yujun Liu, Jinhua Sun, Zhirong Wang, Qingsong Wang
Summary: This study investigates the aging mechanisms and state of health prediction of lithium-ion batteries throughout their lifespan. Battery capacity fading is divided into three stages: stable fading, fast fading, and repetition between capacity increase and decrease. Incremental capacity analysis and electrochemical impedance spectroscopy are used to study relevant aging mechanisms. In the first stage, aging mechanisms include loss of lithium and active material at both electrodes. In the second stage, aging mechanisms are loss of lithium and active material at the negative electrode. In the third stage, the loss of lithium is recovered to increase capacity. Finally, a back propagation neural network optimized by genetic algorithm is used to predict the state of health of lithium-ion batteries, including cycle life, second-life use, and residual capacity.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Lei Feng, Lihua Jiang, Jialong Liu, Zhaoyu Wang, Zesen Wei, Qingsong Wang
Summary: This study investigated the thermal behavior of commercial lithium ion batteries under overcharging in different states of health, finding that thermal runaway is triggered by the melting of separator leading to internal short circuit, and safety decreases with aging due to loss of lithium ions and negative capacity change. Monitoring temperature, voltage and duration changes before thermal runaway can provide warning for thermal runaway risk.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Luca Tendera, Dominik Wycisk, Carlos Gonzalez, Jochen Stadler, Kai Peter Birke
Summary: Battery aging affects the inner structure of cells and alters the through-plane thermal conductivity. However, there is limited information on the correlation between thermal conductivity and aging in the literature. This study extracts 14 cells from sophisticated aging test cycles to simulate field aging and evaluates the thermal conductivity under different aging mechanisms. The results show that a reduced state of health leads to a linearly declining thermal conductivity of up to -40%, with electrolyte loss being the most significant factor.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Bowen Yang, Dafang Wang, Bi Zhang, Shiqin Chen, Xu Sun, Tao Wang
Summary: Based on microscopic morphological changes, this paper proposes the evolving agglomerate fracture and growing SEI film as key factors driving the aging of lithium-ion batteries. The aging and impedance changes are represented by the fracture expansion of secondary particles and thickness growth of the SEI layer, resulting in an impedance model capable of approximating the electrochemical impedance spectrum. The parameters related to the state of health (SOH), such as fracture depth and SEI film thickness, exhibit correlation with morphological development, providing a convenient method for estimating the SOH of LIB.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jinpeng Tian, Rui Xiong, Weixiang Shen, Fengchun Sun
Summary: The proposed method in this paper utilizes offline OCV test results to estimate aging diagnosis of lithium ion batteries at an electrode level, achieving fast diagnosis. The estimated aging parameters are close to the results obtained by offline tests, enabling reconstruction of OCV-Q curves for battery capacity estimation with high accuracy. The influence of voltage ranges on estimation results is also discussed in the study.
ENERGY STORAGE MATERIALS
(2021)
Article
Energy & Fuels
M. Arrinda, M. Oyarbide, L. Lizaso, U. Osa, H. Macicior, H. J. Grande
Summary: This paper proposes a robust aging model generation methodology for lithium-ion batteries with any kind of lab-level aging data availability. The methodology involves four phases and ensures the robustness of the aging model through a verification process.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Chemistry, Applied
Yaqi Li, Jia Guo, Kjeld Pedersen, Leonid Gurevich, Daniel-Ioan Stroe
Summary: This study designs a multi-step fast charging method to extend the lifetime of Li-ion batteries and investigates the aging mechanisms for different charging methods. The results show that one of the designed multi-step charging protocols allows for a 200 full equivalent cycles longer lifetime as compared to the standard charging method, while reducing the charging time by 20%.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Wenhui Wang, Jiaolong Zhang, Chaolin Li, Xiaohang Kou, Baohua Li, Denis Y. W. Yu
Summary: A stable layered structured cathode with high operating voltage and excellent cycling stability has been reported, demonstrating good cycle performance and rate capability. It shows high capacity utilization and capacity retention when the upper cutoff voltage is not higher than 4.2 V.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Wanming Teng, Junxiong Wu, Qinghua Liang, Jiaojiao Deng, Yu Xu, Qiong Liu, Biao Wang, Ting Ma, Ding Nan, Jun Liu, Baohua Li, Qingsong Weng, Xiaoliang Yu
Summary: This review summarizes the recent advancements in electrolytes for alkali metal batteries (lithium, sodium, and potassium batteries), with a special focus on the structure-composition-performance relationships of electrolytes. The review points out the unsuitability of conventional electrolytes for maintaining stability and discusses the role of concentrated and fluorinated electrolytes, as well as functional electrolyte additives, in enhancing the stability of lithium metal batteries. The electrolyte formulations for sodium and potassium metal batteries are also discussed. By highlighting the challenges and research needs in advanced electrolytes for alkali metal batteries, this review sheds light on the principles for the rational design of promising electrolytes and offers new inspirations for developing stable alkali metal batteries with high performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Aihua Ran, Ming Cheng, Shuxiao Chen, Zheng Liang, Zihao Zhou, Guangmin Zhou, Feiyu Kang, Xuan Zhang, Baohua Li, Guodan Wei
Summary: The article introduces a method for effectively estimating the remaining capacity of secondary lithium-ion batteries using real-time short pulse tests combined with data-driven Gaussian process regression algorithm, with an average accuracy of up to 95%. Compared to traditional long charge/discharge tests, this method can greatly reduce testing time.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xianming Deng, Rui Zhang, Kai Zhou, Ziyao Gao, Wei He, Lihan Zhang, Cuiping Han, Feiyu Kang, Baohua Li
Summary: Nickel-rich LiNi1-x-yCoxMnyO2 (NCM) is a promising cathode material due to its high voltage and large capacity. However, polycrystalline NCMs suffer from poor cycle stability. This study compares single crystal and polycrystalline LiNi0.84Co0.07Mn0.09O2 cathodes to understand the relationship between morphology and electrochemical performance. The results show that single crystal samples have lower capacity due to limited Li+ diffusion, but exhibit reduced cracking, side reactions, and Ni/Li mixing. These findings provide insights for developing strategies to improve rate performance and cycling stability.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Zihao Yu, Baohua Li
Summary: Computing the lithium concentration in Li-ion battery electrode particles fast and accurately is crucial in physics-based Li-ion battery models. The algorithm used determines whether this can be achieved when using a high fidelity model. This study develops an algorithm for computing the lithium concentration in Li-ion battery electrode particles with the lithium concentration-stress coupling model. The algorithm can compute the lithium concentration under any load current of Li-ion batteries effectively, given the parameters of the model, as verified through experiments.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Lingyan Ruan, Xianying Qin, Kui Lin, Zijin Yang, Qiuchan Cai, Tong Li, Fangting Wu, Feiyu Kang, Baohua Li
Summary: The TiO2/Cu2O heterostructure on copper mesh is able to enable selective Li nucleation and uniform Li conduction, improving the cycling reversibility and utilization of Li metal anode.
Article
Chemistry, Multidisciplinary
Xiaolu Qin, Xu Zhao, Guobin Zhang, Zhiquan Wei, Linyuan Li, Xiaoke Wang, Chunyi Zhi, Hongfei Li, Cuiping Han, Baohua Li
Summary: An acetonitrile-water hybrid electrolyte has been developed in calcium-ion batteries (CIBs), which greatly improves the transport of bulky Ca2+ and enables large capacity storage of Ca2+ in layered vanadium oxides (CVO). The CVO cathode using this electrolyte shows record-high performance in terms of specific discharge capacity and capacity retention. This work represents a major advance in the development of high-performance Ca-ion batteries.
Correction
Multidisciplinary Sciences
Ming Liu, Chao Wang, Chenglong Zhao, Eveline van der Maas, Kui Lin, Violetta A. Arszelewska, Baohua Li, Swapna Ganapathy, Marnix Wagemaker
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Yanyan Wang, Zhijie Wang, Wei Kong Pang, Wilford Lie, Jodie A. Yuwono, Gemeng Liang, Sailin Liu, Anita M. D' Angelo, Jiaojiao Deng, Yameng Fan, Kenneth Davey, Baohua Li, Zaiping Guo
Summary: The authors propose a hybrid electrolyte that incorporates strongly polar molecules to strengthen the water O-H bonds, thus reducing water activity and improving the electrochemical performance of aqueous zinc-ion batteries.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Xu Yang, Bao Zhang, Yao Tian, Yao Wang, Zhiqiang Fu, Dong Zhou, Hao Liu, Feiyu Kang, Baohua Li, Chunsheng Wang, Guoxiu Wang
Summary: State-of-the-art electrolytes limit the cycle life of halide-ion batteries. Here, the authors report a fluorinated low-polar gel polymer electrolyte capable of improving the stability of the electrolyte and electrode interphases to boost battery performance.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Chuanhui Luo, Qi Liu, Xianshu Wang, Yao Tian, Zhenfang Liu, Feiyu Kang, Baohua Li
Summary: Electrolyte engineering-controlled interfacial chemistries are crucial for stable lithium-metal batteries. In this study, the introduction of the active difluoroethylene carbonate (DFEC) co-solvent leads to the formation of a local high concentrated electrolyte (LHCE), which enhances interfacial chemistries. The DFEC serves as both additive and diluent, reinforcing the anion-solvation-derived interfacial layers and improving the cycle stability of the Li||LiCoO2 full cell and pouch cells.
Article
Chemistry, Physical
Qi Liu, Jiahao Yu, Weiqian Guo, Yanfang Pan, Cuiping Han, Hong-bo Liu, Baohua Li
Summary: NASCION-type lithium conductors offer opportunities for solid-state lithium batteries with superior safety and high energy density. However, the poor interfacial compatibility has hindered their practical application. By in situ constructing a LiF-enriched solid electrolyte interphase (SEI) layer, the interfacial side reactions are successfully blocked. This robust SEI layer suppresses dendrite growth and enhances interfacial chemistry, enabling record-high critical current density and improved cycling lifespan and rate performance for the battery cells.
Article
Chemistry, Multidisciplinary
Xu Zhao, Linyuan Li, Lirong Zheng, Longlong Fan, Yong Yi, Guobin Zhang, Cuiping Han, Baohua Li
Summary: This study developed model materials of V2O5 pre-intercalated with various transition metal ions M2+ (MNi, Co, Mn) to analyze the coupling effect between guest ions and host material. It was found that M2+ interacts with V-O chain through covalent bonds, and the different covalency degree of M-O bonds can optimize the structure and electronic properties of the material. In terms of cycling performance and ion diffusion, NiVO cathode material showed better performance. This study highlights the influence of layer spacing and physicochemical properties of intercalants on the electrochemical process, which is important for developing high-performance vanadate cathode materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Geography, Physical
Shuai Zhang, Tiegang Li, Zhoufei Yu, Fengming Chang, Sifan Gu, Zhifang Xiong, Heng Liu, Fang Qian, Junru Zhang, Xuhua Cheng, Baohua Li
Summary: In this study, the thermohaline and δ13C variations in the Pacific intermediate water over the past 28,000 years were reconstructed based on sediment core analysis. It was found that during Heinrich Stadial 1, the temperature of intermediate water rapidly increased by approximately 6 degrees C and was accompanied by changes in Southern Ocean surface water, exhibiting typical Antarctic characteristics. The climatic development in the Southern Hemisphere and the advection of the thermal anomaly into the tropical Pacific intermediate water through the Southern Ocean are believed to be closely linked.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Chemistry, Physical
Jian Lu, Yun Zhao, Yuqiong Kang, Chenglei Li, Yawen Liu, Liguang Wang, Hao Du, Meicen Fan, Yunan Zhou, John Wozny, Tao Li, Naser Tavajohi, Feiyu Kang, Baohua Li
Summary: Efficient and economical recycling of lithium-ion batteries is challenging due to low valuation of commodity metals and materials. Utilizing the surplus energy in lithiated graphite to prepare organolithiums significantly improves the economic profitability of LIB recycling.
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)
