Article
Chemistry, Physical
Sergii A. Sergiienko, Daniela Lopes, Gabriel Constantinescu, Marta C. Ferro, Nataliya D. Shchaerban, Obid B. Tursunov, Viacheslav Shkepu, Hanna Pazniak, Nataliya Yu Tabachkova, Enrique Rodriguez Castellon, Jorge R. Frade, Andrei Kovalevsky
Summary: This study explores the processing possibilities of Ni- and Ti3C2Tx-containing composite electrodes through co-pressing, plastic deformation, or etching. Various material design approaches were also explored, including the introduction of additional Al to tune the Ti3C2 interlayer distance. The electrochemical studies focused on hydrogen evolution showed the potential for boosting the electrochemical reaction in Ni and MXene-containing composite electrodes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Yan Wu, Bin Ji, Wei Wang
Summary: This study analyzed the effect and mechanism of saccharin sodium in reducing the internal stress of Fe-Ni magnetic films, demonstrating that saccharin sodium significantly reduced the stress of the iron-nickel magnetic film. Saccharin sodium can form a metal complex with positive charge on the surface of the electrode, preventing hydrogen ions from approaching the cathode, thereby reducing hydrogen evolution and improving the internal stress of the coating.
Article
Nanoscience & Nanotechnology
Byung Keun Kim, Myung Jun Kim, Jae Jeong Kim
Summary: This study found that increasing the hydrophilicity of the electrocatalyst surface helps reduce the size of gas bubbles and shorten their duration, promoting the hydrogen evolution reaction and lowering the overpotential at a given current density.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Lei Chen, Hao-Yu Wang, Wen-Wen Tian, Lei Wang, Ming-Lei Sun, Jin-Tao Ren, Zhong-Yong Yuan
Summary: This study introduces an internal electric field strategy for the engineering of heterogeneous nickel-vanadium oxide nanosheet arrays as efficient bifunctional electrocatalysts for hydrogen electrocatalysis. The interface internal electric field effect fosters asymmetrical charge distributions, elevating the overall efficiency of hydrogen adsorption and improving the performance of both hydrogen evolution reaction and hydrogen oxidation reaction.
Article
Chemistry, Analytical
Qinyi Wei, Peilin Wang, Yongsong Ma, Kaifa Du, Huayi Yin, Hua Zhu, Dihua Wang
Summary: This study systematically investigated the effects of applied current density and electrolysis time on the hydrogen evolution reaction (HER) performance of nickel (Ni) electrodes in alkaline solutions. It was found that after serving as a HER electrode, the intensity of the XRD diffraction peak of the Ni (111) facet increased, while the HER performance decreased. Reversing the applied current at the used Ni electrode reduced the intensity of the XRD diffraction peak of the Ni (111) facet and increased the HER performance. Combining surface changes and density functional theory (DFT) analysis, it was revealed that the HER performance of the Ni electrode was related to the intensity of the Ni (111) facet.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Aleksey N. Kuznetsov, Olga V. Cherstiouk, Vladimir I. Zaikovskii, Nina A. Rudina, Ren I. Kvon, Alexandr G. Oshchepkov
Summary: Glassy carbon supported Ni/GC and amorphous Ni-P/GC electrodes were prepared and characterized. The effect of electrochemical oxidation on the electrochemical behavior was investigated. The oxidation treatment significantly affected the properties of Ni/GC electrode, while had little impact on the performance of Ni-P/GC sample.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Yanhui Song, Wenbo Sha, Meixiu Song, Peizhi Liu, Jiakang Tian, Hong Wei, Xiaodong Hao, Bingshe Xu, Junjie Guo, Jianguo Liang
Summary: The defect engineering and element doping in metal nanomeshes play an important role in improving the performance of electrocatalytic water splitting. The study demonstrates that P-doped NiMoO4 exhibits excellent hydrogen and oxygen evolution reaction properties, highlighting the synergistic effect between defect engineering and element doping in enhancing catalytic activity.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
F. Ganci, B. Buccheri, B. Patella, E. Cannata, G. Aiello, P. Mandin, R. Inguanta
Summary: Over the past decade, there has been a significant increase in interest in green hydrogen production due to global decarbonization efforts. This study investigates the fabrication of electrodes using nickel-zinc alloys with nanowires morphology for efficient and affordable electrolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yu Tan, Siyu Liu, Jiawen Sun, Xiaoke Dong, Yike Wei, Kexin Liang, Shenghan Zhang
Summary: This study presents a novel PtNBs/NiNRs heterojunction catalyst with superior catalytic activity for hydrogen evolution reaction (HER) in an alkaline condition. The PtNBs/NiNRs electrodes show lower hydrogen overpotential, decreased charge transfer resistance, and increased charge capacitance compared to traditional Pt electrodes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Shuo Zhang, Qingwen Zhou, Zihan Shen, Xin Jin, Yuchen Zhang, Man Shi, Jian Zhou, Jianguo Liu, Zhenda Lu, Yong-Ning Zhou, Huigang Zhang
Summary: The research reports a sulfophobic phenomenon of electrocatalysts weakly interacting with sulfur species, developing a self-cleaning NiS2 electrode to avoid passivation issues, and engineering sulfur vacancies to synthesize v-NiS2 for efficient hydrogen evolution reaction.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jeongmin Mo, Younji Ko, Young Soo Yun, June Huh, Jinhan Cho
Summary: We have developed high-performance water-splitting electrodes with extremely low overpotentials and high operational stability using a carbonization/interfacial assembly-induced electroplating approach. These electrodes exhibit significantly better performance than conventional non-noble metal-based electrodes in alkaline media.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Kota Ando, Yoshiharu Uchimoto, Takashi Nakajima
Summary: The irradiation of a single laser pulse onto the electrode assists the formation of bubbles, which can be used to probe the dissolved gas concentration on the electrode. The obtained concentrations agree well with inferred values through linear extrapolation of gas concentration in proximity to the electrode to the electrode surface.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Acoustics
Faranak Foroughi, Alaa Y. Faid, Svein Sunde, Bruno G. Pollet
Summary: This research utilizes ultrasound to activate the surface of metallic nickel, enhancing its activity in the oxygen evolution reaction (OER) in alkaline media. The sonoactivated Ni exhibits lower potential and charge transfer resistance after ultrasound treatment, which can be attributed to the formation of free OH\dot{\ }} radicals resulting from cavitation bubbles collapsing. However, ultrasound has minimal effects on the electrochemical surface area and Tafel slopes.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Chemistry, Physical
Zakiullah Kamlesh, Zakiullah Zaidi, Manish Mudgal, Avanish Kumar Srivastava, Archana Singh
Summary: This study demonstrates a strategy for using electronic waste from nickel-metal hydride batteries as bifunctional electrocatalyst materials for the oxygen evolution reaction and hydrogen evolution reaction. The recycled steel-based electrodes show higher activity than commercial catalysts and have the potential for the development of economical and efficient electrodes from waste.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Esteban A. Franceschini, Victoria Benavente Llorente, Anabel E. Lanterna
Summary: This study demonstrates the superior hydrogen generation activity of nickel composite electrodes modified with engineered semiconductor heterojunctions based on earth-abundant transition metals in the presence of a non-toxic electrolyte. Small amounts of cobalt or copper oxides can enhance the reactivity of the composite electrodes, and modified niobium-based semiconductors show better performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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)