Article
Nanoscience & Nanotechnology
Xiaolong Li, Limin Guo, Jing Li, Erkang Wang, Tianfu Liu, Guoxiong Wang, Ke Sun, Chuntai Liu, Zhangquan Peng
Summary: As an important invention, the lithium-ion battery has changed human life, a new additive has been discovered to improve the electrolyte performance, bringing hope for the use of PC electrolyte in LIBs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Alexander Nickol, Christian Heubner, Michael Schneider, Alexander Michaelis
Summary: This study provides a comprehensive analysis of performance limitations in Li-ion batteries at low temperatures, using a LiNi0.5Co0.2Mn0.3O2-based cathode as an example. By decomposing the complex system and investigating individual aspects, the researchers reveal the relationship between performance limitations and operating conditions. This knowledge can be used for optimization and simulation of battery behavior.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yuxin Jiang, Xinyuan Zhang, Xianzhen Xu, Shida Gong, Zonghua Wang, Yu Zhou
Summary: Studies have shown that mixing two or more ionic liquids (IL) to form IL mixtures has become a new research hotspot for designing ILs with desirable properties. However, there have been fewer fundamental studies on the interactions and mixing behaviors of IL mixtures. In this work, two ILs containing the same cation [EMIM]+ were used to prepare IL mixtures, and their mixing behavior was investigated through experimental methods and quantum chemical calculations. The main conclusions are: (1) DMSO forms stronger hydrogen bonds with EMIMTFSI than with EMIMBF4. (2) The addition of EMIMBF4 weakens the hydrogen bonding interactions in the EMIMTFSI-EMIMBF4 system and strengthens the coulombic interactions. (3) With dilution, the C2-H bond experiences the smallest changes, suggesting that it remains the main interaction site. (4) New formation complexes between EMIMBF4 and EMIMTFSI were confirmed through excess infrared spectra.
Article
Chemistry, Physical
Mesut Yilmazoglu, Fatih Bayiroglu, Hamit Erdemi, Ufuk Abaci, H. Yuksel Guney
Summary: In this study, the dielectric properties of SPEEK solid polymer electrolytes containing room-temperature molten salt were investigated, with ionic liquid addition causing changes in crystalline structure and surface morphology of the electrolytes. The addition of IL led to the formation of amorphous character, creating proton conduction paths with enhanced conductivity. Among the composite electrolytes, SPEEK-30 x 2IM showed significantly higher ionic conductivity compared to pure SPEEK-30.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Xuan Luo, Shiyong Jiang, Xiaodan Yan, Cheng Chen, Shuchang Liu, Shiying Zhan, Lingzhi Zhang
Summary: This study reports an electrolyte additive, DSON, that can improve the electrochemical performance of LiMn2O4 batteries at high temperatures. LiMn2O4/graphite cells using DSON additive show higher capacity retention and effective suppression of manganese dissolution.
Article
Chemistry, Multidisciplinary
Bin Wang, Lewis W. Le Fevre, Adam Brookfield, Eric J. L. McInnes, Robert A. W. Dryfe
Summary: In situ electrochemical electron paramagnetic resonance (EPR) spectroscopy is used to study the mixed lithiation/deposition behavior on graphite anodes during charging, providing insights into the conductivity, degree of lithiation, and deposition process. The research also highlights the impact of inhibitors like vinylene carbonate (VC) on the lithiation behavior and suggests a safe cut-off potential limit for anode operating conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
T. Srinivasa Krishna, P. V. V. S. Rama Rao, K. Narendra, D. Bala Karuna Kumar, D. Ramachandran
Summary: This work discusses the densities and speeds of sound of binary mixtures of 1- butyl -3-methylimidazolium Tetrafluroborate ionic liquid with Ethyl acetate at different temperatures. Molecular interactions and the effect of temperature on interactions are analyzed through excess properties such as excess molar volumes, excess isentropic compressibility, excess speeds of sound, excess molar isentropic compressibility, and excess isobaric thermal expansion. The experimental results are adequately fitted with the Redlich-Kister polynomial equation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Jiasheng Lu, Xijun Xu, Weizhen Fan, Yong Xin, Wenlian Wang, Chaojun Fan, Pengfei Cheng, Jingwei Zhao, Jun Liu, Yanping Huo
Summary: LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes paired with a graphite anode have shown promise for power lithium-ion batteries. In this study, phenyl 4-fluorobenzene sulfonate (PFBS) was investigated as an additive to suppress the structural degradation of NCM811 and improve the performance of the battery at different temperatures. Experimental results showed that a 1 wt % PFBS additive significantly improved the cycling performance of the battery and maintained a higher capacity retention. Theoretical calculations and spectroscopy analysis demonstrated the role of PFBS in stabilizing the solid electrolyte interphase and facilitating Li ion diffusion.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Enyou Zhao, Shiqiang Luo, Yixuan Gu, Li Yang, Shin-Ichi Hirano
Summary: The study demonstrates that using in situ gel electrolyte in lithium-ion batteries can significantly improve the cycling performance and stability of silicon-based anodes, effectively suppress volume expansion of the anode, while maintaining good battery performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Dzmitry H. Zaitsau, Maxim Papusha, Wassja A. Kopp, Kai Leonhard
Summary: This study investigates the decomposition pathways of 1-Ethyl-3-methylimidazolium acetate ([C2Mim][OAc]) through a combination of experiments and computations. The activation energy for the decomposition of [C2Mim][OAc] is found to be around 135 kJ & sdot;mol- 1 in experiments and approximately 142-144 kJ & sdot;mol- 1 in computations. The study reveals that the thermal decomposition of [C2Mim][OAc] is primarily dominated by the SN2 pathway.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Ram Kishore Sankaralingam, Satyanarayanan Seshadri, Jaka Sunarso, Anand I. Bhatt, Ajay Kapoor
Summary: This review article explores the parameters that significantly impact the performance of redox flow batteries, with electrode activation and felt compression identified as the most significant. Electrolyte additives and flow field design were found to be reasonably significant, while electrolyte temperature and membrane type were identified as the least significant parameters. This survey outlines a parametric matrix to help researchers focus their efforts on improving redox flow battery performance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Zhihao Liu, Ruirui Li, Tao Deng
Summary: An EC-free electrolyte was designed to enhance the safety and lifespan of lithium-ion batteries. The experimental results showed that the EC-free electrolyte could generate a stable electrode-electrolyte interphase, alleviate electrode cracking and electrode-electrolyte reactions, and maintain high capacity under high voltage conditions.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Sheng S. Zhang
Summary: This article discusses and proposes the design aspects of electrolytes for fast charging of lithium-ion batteries, highlighting how fast charging can exacerbate parasitic reactions and structural degradation of the electrolytes.
Review
Chemistry, Multidisciplinary
Pan Luo, Cheng Zheng, Jiawei He, Xin Tu, Wenping Sun, Hongge Pan, Yanping Zhou, Xianhong Rui, Bing Zhang, Kama Huang
Summary: Graphite-derived carbon materials are widely used in metal-ion batteries for their good mechanical and electrical properties, cost effectiveness, light weight, and environmental friendliness. Various studies have been conducted to enhance the metal-ion storage capability of graphite and its derivatives.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jinbiao Jia, Beibei Shi, Jia Dong, Xu Feng, Yangqing Wu, Bingqiang Cao
Summary: In this work, the introduction of the ionic liquid 1-ethyl-3-methylimidazolium chloride into the triple-cation perovskite light absorption layer improves the crystallinity of the perovskite film, reduces pinholes and defects, and efficiently restrains nonradiative recombination loss, thus accelerating carrier extraction. The device modified with 1-ethyl-3-methylimidazolium chloride achieves a significantly higher power conversion efficiency of 21.54% compared to the control device (18.12%). This work demonstrates the potential of 1-ethyl-3-methylimidazolium chloride as an additive for high-performance perovskite solar cells.
MATERIALS RESEARCH BULLETIN
(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)