Article
Electrochemistry
Hwang Sheng Lee, Vishwanathan Ramar, Saravanan Kuppan, Mangayarkarasi Nagarathinam, Markas Law, Chen Wang, Abhinav Tripathi, Palani Balaya
Summary: The one-pot soft template synthesis of alpha-Li3V2(PO4)(3)/C shows excellent storage and rate performances, with unique morphology and long cycle life. This cathode material demonstrates high discharge capacities and better rate performance compared to known cathode materials for lithium-ion batteries.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Siyuan Chen, Ni Wen, Chunmao Huang, Youzhong Dong, Quan Kuang, Qinghua Fan, Yanming Zhao
Summary: This study demonstrates for the first time a feasible rechargeable organic nickel ion battery using an ether-based electrolyte, Li3V2(PO4)(3) as cathode, and nickel foam as anode materials. The battery exhibits high reversible specific capacity and stable cycle performance, and the reversible insertion and extraction of Ni2+ ions into the cathode structure are confirmed by experimental methods. Additionally, the reaction mechanism and structural changes during the cycle process are analyzed in detail using in-situ X-ray diffraction technology and Rietveld refinement.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Qinyan Yang, Xiang Yao, Hualing Tian, Yanjun Cai, Zhi Su
Summary: The introduction of fast ion conductor LVP into LVOP enhances electronic conductivity and first discharge specific capacity of the composite material, leading to improved cycle performance. The presence of both LVOP and LVP phases with carbon coating in the synthesized material contributes to the increase in Li+ pervasion channels and acceleration of Li+ transmission speed, further boosting electrochemical performance.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Fei Wang, Xiaoyu Liu, Zhuang Liu, Yanming Wang
Summary: The high-activity Li3V2(PO4)3/C composite cathode prepared using dual carbon sources of poly(acrylic acid) and soluble starch exhibits excellent physical and electrochemical properties, achieving large discharge capacities and stable cyclability at high C-rates. The porous structure induced by poly(acrylic acid) and highly conductive carbon from soluble starch contribute to the enhancement of electrochemical performances of the composite.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Jie Lu, Yiqin Wang, Fuyu Song, Zepeng Zhang, Qiuwei Lu, Yi Cheng, Yehan Tao, Jian Du, Haisong Wang
Summary: In this study, a carbonaceous layer rich in oxygen-containing functional groups was successfully synthesized from N-doped lignin waste liquor and used as an armor layer to decorate the LVP cathode material, thereby improving the capacity and lifespan of lithium-ion batteries. The champion device exhibited a high initial discharge capacity and excellent capacity retention at high rates.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Lulu Mo, Limin Zhu, Lingling Xie, Xiaoyu Cao
Summary: This study reports the preparation of Cu-coated Li3V2(PO4)3/C composites via a chemical precipitation and self-reduction method. The optimized Cu coating content significantly enhances the electrochemical properties, leading to higher initial discharge capacity and improved cycling stability. Enhanced performance is attributed to the uniform coating of Cu on the surface of LVPC, promoting electron transfer and Li+ ion extraction/insertion.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Analytical
Duyoung Choi, Ji-Yeon Shim, Sungwoong Choi, Sangmin Park, Harok Jeong, Min -Su Kim, Jungpil Kim, Junghoon Yang
Summary: Alkali vanadium phosphates are promising electrode materials for next-generation ion batteries, but suffer from low electronic conductivity due to phosphate group. In this study, a method of building an effective carbon backbone in alkali vanadium phosphate and carbon composite is proposed to overcome this issue. The carbon backbone not only provides electron pathways but also suppresses particle agglomeration, resulting in efficient ion diffusion and electron transfer. The importance of efficient carbon composite materials for phosphate-based electrode materials is demonstrated by investigating the rhombohedral Li3V2(PO4)3 material as a cathode and anode for lithium-ion batteries, which is a different phase from the well-known monoclinic Li3V2(PO4)3.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Dexing Zhao, Lulu Mo, Qing Han, Lingling Xie, Limin Zhu, Xiaoyu Cao
Summary: The study synthesized a series of novel N-doped carbon-coated Li3V2(PO4)(3) composites by rheological phase method, with N-doping improving the structural stability and electrochemical performance of LVPC. The best properties were achieved when the ratio of citric acid to melamine was 5:3.
Article
Chemistry, Physical
Xiaohan Li, Ning Wang, Tong Su, Yujun Chai
Summary: Three-dimensional carbon network supported LVP and NVP composites were successfully prepared. These composites exhibit good lithium and sodium storage performance. A noticeable solid electrolyte interphase film was detected in the LVP/C electrode during cycling.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xiaopeng Li, Xingyu Du, Yulin Xu, Jianming Li, Yujue Wang, Yan Meng, Dan Xiao
Summary: A three-dimensional holey graphene enwrapped Li3V2(PO4)(3)/N-doped carbon nanocomposite was successfully synthesized, which exhibited excellent electrochemical performance and showed potential for application in Li-ion batteries.
Article
Materials Science, Ceramics
Zan Huang, Peifang Luo, Honghong Zheng
Summary: In this work, a facile method was proposed to fabricate Ti4+-doped Li3V2(PO4)3/C nanofibers, and the Ti4+ doping contributed to the improved electrical conductivity and Li+ diffusion coefficient, resulting in good battery characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Tristram Jenkins, Jose A. Alarco, Bruce Cowie, Ian D. R. Mackinnon
Summary: Alkali vanadium (III) phosphates show promise as positive electrode materials for Li-, Na-, and K-ion batteries. The reversible redox mechanism of Li3V2(PO4)3 and Na3V2(PO4)3 cathodes during charge/discharge vs. Li+/Li0 has been directly observed using Soft X-ray Absorption Spectroscopy. Surface Li+ insertion is observed for both cathodes after exposure to Li+ electrolyte. The observations provide further understanding of atomic and electronic structure changes and charge-discharge mechanisms of high voltage cathode materials for Li-ion battery applications.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Sunkyu Park, Jean-Noel Chotard, Dany Carlier, Iona Moog, Mathieu Duttine, Francois Fauth, Antonella Iadecola, Laurence Croguennec, Christian Masquelier
Summary: This study thoroughly investigates the asymmetric Na+extraction/insertion process in Fe/V-mixed NASICON Na4FeV(PO4)3 electrode material and unveils valuable aspects of the asymmetric behavior during multi-electron reactions.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Haiyan Yan, Minhao Li, Yuqiao Fu, Shujuan Chen, Yi Wang, Bo Zhang
Summary: In this study, a facile method was proposed to fabricate conductive polypyrrole-enhanced LVPO composite, and its morphology, microstructure, phase structure, and battery performance were systematically investigated. The results demonstrate that the composite exhibits superior lithium storage performance due to the synergistic effects of nanosized LVPO particles and conductive polypyrrole film.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Daria O. Semykina, Olga A. Podgornova, Sahana B. Moodakare, Raman Vedarajan, Nina V. Kosova
Summary: In this study, crystal phases in the Li3-xNaxV2(PO4)(3) system were investigated using four synthesis methods. It was found that mechanochemically assisted solid-state and sol-gel synthesis methods failed to produce the single-phase Na3-xLixV2(PO4)(3). In contrast, chemical and electrochemical ion exchange methods achieved deep substitution degrees, especially in the NASICON framework. The Li2NaV2(PO4)(3) phase, formed by replacing 1/3 of Li+ ions with Na+ in the anti-NASICON framework, was shown to be metastable and decomposed into two NASICON-type compounds after high-temperature treatment. The ionic conductivity and contribution of the electronic component to total conductivity were also analyzed.
INORGANIC CHEMISTRY
(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)