Article
Nanoscience & Nanotechnology
Jihyun Jang, Jun H. Ku, Seung M. Oh, Taeho Yoon
Summary: This study presents a novel strategy to increase the reversible capacity of electrode materials by altering the lithiation mechanism of transition metal oxides, exemplified by the conversion of MoO2 to CoMoO3. X-ray absorption spectroscopy and X-ray diffraction revealed the amorphization of the host structure due to the conversion of CoO to Co and Li2O. The high initial Coulombic efficiency of CoMoO3 is attributed to the highly conductive Co and MoO2, enhancing electronic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Andrzej P. Nowak, Maria Gazda, Marcin Lapinski, Zuzanna Zarach, Konrad Trzcinski, Mariusz Szkoda, Szymon Mania, Jinjin Li, Robert Tylingo
Summary: A new composite material consisting of SnO2 and a carbonaceous matrix was fabricated, showing promising electrochemical performance with higher specific capacity and stability, potentially suitable as a replacement for graphite in lithium-ion batteries.
Article
Chemistry, Physical
Weilong Ai, Niall Kirkaldy, Yang Jiang, Gregory Offer, Huizhi Wang, Billy Wu
Summary: In this study, an electrochemical composite electrode model was developed and validated for lithium-ion batteries with a silicon/graphite anode. The model was able to reproduce voltage hysteresis and demonstrate the interactions between graphite and silicon. This research revealed the effects of silicon additives and the impact of different composite electrodes on the performance of lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Michael Yi, Andrei Dolocan, Arumugam Manthiram
Summary: High-nickel layered oxide cathodes, such as NMC and NCA, are widely used in high-energy-density lithium-ion batteries. However, the inclusion of cobalt in these cathodes raises concerns about its sourcing. This study presents a cobalt-free ultrahigh-nickel cathode, NBM, with a modified composition that exhibits improved performance and stability in full cell configurations. By reducing active lithium inventory loss and preventing crossover reactions to the anode, the NBM cathode shows promising potential for industrial feasibility.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Zhuo Wang, Cuiying Dai, Kongyao Chen, Yanjie Wang, Qi Liu, Yonggang Liu, Baiwei Ma, Liwei Mi, Weiguo Mao
Summary: This article discusses the correlation between thick electrode design and electrochemical performance, analyzing the factors that affect electron-ion transfer and mechanical stability. It summarizes the main design strategies for producing thick electrodes with excellent electrochemo-mechanical properties, reviews state-of-the-art fabrication techniques, and discusses their potential development directions. Challenges and feasible tendencies associated with developing thick electrodes are analyzed and proposed.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Xuli Ding, Daowei Liang, Xin Ai, Hongda Zhao, Ning Zhang, Xiaojing Chen, Jiahao Xu, Hui Yang
Summary: By optimizing the molar ratio of SiO2/Sn to 10:1, the synergistic effect of Li storage between SiO2 and Sn can lead to the simultaneous achievement of improved Li kinetics and ensured mechanical integrity, contributing to the excellent electrochemical performance of the composite with a large reversible capacity of 613 mAh g(-1) at 100 mA g(-1), a remarkable rate capability of 450 mAh retained at 1000 mA g(-1), and long-term cycling durability with similar to 95% capacity retention over 200 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Florent Mohimont, Ronan Le Ruyet, Reza Younesi, Andrew J. J. Naylor
Summary: Alloy electrodes with high energy density are gaining interest in the field of Li-ion batteries, but they suffer from rapid pulverization and disconnection due to large volume changes. Ga-based liquid alloys, such as galinstan, have been studied as self-healing electrodes due to their ability to store Li and remain in a liquid state at room temperature. However, the lithiation mechanism and practical capacity of galinstan are still unknown. This study used electrochemical measurements, XRD, and SEM analyses to investigate the redox processes and structural properties of galinstan as an electrode material.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Sanjay Pindar, Nikhil Dhawan
Summary: This study focused on utilizing discarded lithium-ion batteries for valuable metal and graphite resources through processes like microwave treatment and froth flotation, achieving successful separation and recovery with high metal and graphite value recovery rates.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Review
Chemistry, Multidisciplinary
Hoon-Hee Ryu, H. Hohyun Sun, Seung-Taek Myung, Chong S. Yoon, Yang-Kook Sun
Summary: The increase in global sales of electric vehicles is attributed to high energy-density lithium-ion batteries, with a focus on reducing the use of cobalt in cathodes. A comparison of different cathode types in terms of performance and cost efficiency is made to evaluate their commercial viability for future electric vehicles, highlighting the challenges and strategies for developing advanced cathodes.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
C. A. Velasquez, F. A. Vasquez, M. Alvarez-Lainez, A. Zapata-Gonzalez, J. A. Calderon
Summary: The development of E-textiles relies on portable energy storage devices that maintain comfort and functionality. A flexible carbon electrode, impregnated with magnetite nanoparticles, was developed for lithium batteries and showed improved electrochemical performance. Despite a slight reduction in capacity retention at high C-rates due to lower electronic conductivity, the composite material achieved a higher initial discharge capacity and coulombic efficiency compared to pure carbon nanofibers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Richard Sim, Laisuo Su, Arumugam Manthiram
Summary: This study demonstrates the use of a localized saturated electrolyte (LSE) to enable stable cycling of a cobalt-free, low-nickel layered-oxide cathode LiNi0.7Mn0.25Al0.05O2 (NMA-70) to higher voltages (4.6 V) in a lithium-metal battery. Compared to the baseline LP57 electrolyte, the LSE extends the cycle life from approximately 100 cycles to approximately 400 cycles before reaching 80% capacity retention. The use of LSE reduces active material loss, overpotential growth, and gas evolution, thereby improving the safety characteristics of the cell.
ADVANCED ENERGY MATERIALS
(2023)
Review
Engineering, Environmental
Gautam Mishra, Rohit Jha, Arunabh Meshram, Kamalesh K. Singh
Summary: This article focuses on metal recovery from spent LIBs by utilizing various recycling routes, including conventional hydrometallurgy and pyrometallurgy methods, as well as modern trends like pyro-hydrometallurgy and bio-metallurgy. The structured discussion highlights the extraction routes, sorting, pre-treatment, and processes employed in metal recovery. Various leaching and recovery processes are illustrated to provide a holistic idea of material recycling, with a review of published works in the past two decades on recovering metals such as lithium and cobalt from spent LIBs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Mehrdad Dorri, Cyrus Zamani, Alireza Babaei
Summary: The mechanism of non-stoichiometric MnCo2O4+delta to stoichiometric MnCo2O4 structural transformation in the calcination temperature range of 350-650 degrees C and its morphology evolution from nanoplates with {112} facets to quasi nanoplates with {110} facets in the preferential orientation of [220] direction is investigated. By understanding this mechanism, MnCo2O4 with controlled structure and morphology was synthesized as the anode for Li-ion batteries to overcome capacity fading issue. The optimized electrode exhibited high initial discharge capacity, excellent rate capability, and outstanding cycling performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Multidisciplinary
Ye Cheng, Chengrui Wang, Feiyu Kang, Yan-Bing He
Summary: This review summarizes the mechanisms and applications of self-healing strategies in lithium-ion batteries, highlighting the enhanced cycle stability through the use of self-healing materials.
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)