Article
Materials Science, Multidisciplinary
Israel Leka Lera, Sutripto Khasnabis, Lodrick Makokha Wangatia, Olu Emmanuel Femi, Praveen C. Ramamurthy
Summary: The study focused on modifying conventional nickel phosphide by cobalt doping and dispersing the prepared cobalt nickel phosphide on poly (aniline-co-pyrrole)/reduced graphene oxide to improve the kinetics and stability of direct urea fuel cells. The synthesized catalysts showed superior electrocatalytic performance, indicating potential commercial applications.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
R. Ashwini, M. K. Punith Kumar, M. Y. Rekha, M. S. Santosh, Chandan Srivastava
Summary: Graphene has been successfully engineered with high entropy alloy (HEA) nanoparticles to create nanocomposite catalysts for various applications. Among the different composites produced, the 70:30 HEA-G composite exhibited the best catalytic performance and sensitivity for the non-enzymatic oxidation of urea.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Haseena Koyakutty, J. S. Niranjana, M. Junaid Bushiri
Summary: Defect rich Ni/NiO-graphene heterostructures were developed through a facile method combining electrocatalytically active Ni/NiO nanocomposite with graphene sheets. The heterostructures exhibited enhanced redox activity and glucose oxidative properties. The material demonstrated a wide linear range, high sensitivity, and good anti-interference ability, making it a potential electrode material for cost-effective glucose selective sensors.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Guangya Hou, Zhongwei Shen, Yiping Tang, Qiang Chen, Huibin Zhang, Guoqu Zheng, Jianli Zhang
Summary: Efficient bacterial cellulose (BC)-derived carbon aerogel loaded with Ni-based catalyst and WC nanoparticles co-catalyst was developed for the electrooxidation of methanol and urea. The catalytic electrode exhibits high electrocatalytic activity for methanol and urea electrooxidation due to the synergistic effect between Ni and WC. The electrode shows good durability with significant retention of peak current density after cycling.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Shankar S. Narwade, Shivsharan M. Mali, Akash K. Tapre, Bhaskar R. Sathe
Summary: The non-precious graphene oxide based oxidized multiwalled carbon nanotubes metal-free electrocatalytic system showed excellent performance and stability for the oxidation of hydrogen sulfide to produce hydrogen gas. Heteroatoms acted as promoters between the MWCNTs and GO, leading to a superior current density and better stability for the H2S oxidation reaction. The presence of S atoms was found to facilitate the dissociation of S-H bonds, enhancing the overall efficiency of the system.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Shwetambara Jha, Nadia Hassan, Mohsin Ahmad Bhat, Pravin Popinand Ingole
Summary: Currently, the only practical option for commercial utilization of electrochemical energy conversion devices is to reduce the usage of costly platinum group-based materials while improving their electro-catalytic efficiency. Exploring the suitability of multifunctional catalyst materials could be a promising strategy for this purpose.
Article
Electrochemistry
Shuli Wang, Peixuan Xu, Jingqi Tian, Zong Liu, Ligang Feng
Summary: This study successfully demonstrated phase structure tuning of graphene supported Ni-NiO nanoparticles system to enhance urea oxidation performance. By optimizing the annealing temperature, the sample obtained at 450 degrees Celsius exhibited the highest catalytic activity and stability.
ELECTROCHIMICA ACTA
(2021)
Article
Biotechnology & Applied Microbiology
Mohamed Taha, Yasser A. Attia, Shymaa S. Medany
Summary: Investigation on the electrocatalytic activity of Ni/NiO microflower-decorated g-C3N4 heterostructure towards urea electrochemical oxidation (UEO) showed that the Ni/NiO 30%/g-C3N4 nanocomposites exhibited the highest electrocatalytic activity and stability.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Ewelina Urbanczyk, Marta Wala, Agata Blacha-Grzechnik, Agnieszka Stolarczyk, Artur Maciej, Wojciech Simka
Summary: This study presents a simple method for preparing electrocatalytic materials for methanol oxidation, utilizing a composite of nickel, cobalt, and graphene. Electrodes prepared through an electrochemical deposition process exhibited stable performance and optimal results were achieved with a specific current density, showing promising catalytic properties for methanol electrooxidation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Shuai Wang, Rui Zhao, Tian Zheng, Zheng Lu, Yuan Fang, Wenjian Wang
Summary: Metal borides have shown potential as alkaline OER catalysts, with amorphous ternary Ni-Ce-B materials displaying superior performance when Ce content is optimized at 5%. The enhanced activity of Ni-Ce-B/NF electrodes is attributed to the synergistic effect between Ni and Ce, as well as the role of CeO2-x in promoting the formation of high-valence nickel species during self-electrooxidation. This study highlights Ce-based metal borides as promising candidates for low-cost and efficient OER catalysis.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Ajay Munde, Balaji B. Mulik, Parag P. Chavan, Vijay S. Sapner, Shankar S. Narwade, Shivsharan M. Mali, Bhaskar R. Sathe
Summary: The study presents a surface modification approach for the fabrication of noble metal-free cobalt-bismuth bimetallic electrocatalysts for enhanced ethanol oxidation reaction. The synthesized Co-Bi@rGO electrocatalysts exhibit high activity, cost-effectiveness, efficiency, and durability, showing superior performance compared to individual counterparts. The synergistic interactions of rGO, Co, and Bi in the electrocatalysts contribute to their enhanced performance in the ethanol oxidation reaction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Sara Sheikhi, Fahimeh Jalali
Summary: In this study, a porous carbon platform containing zirconium oxide was used for dispersing Ni nanoparticles and applied to methanol oxidation. The electrocatalyst showed excellent electrocatalytic behavior towards methanol oxidation in alkaline medium, suggesting its potential as an alternative to Pt-based electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Shaoxiong Bai, Liang Chen, Jingjing Bai, Chenghang Lv, Shoudong Xu, Ding Zhang, Haibin Meng, Chunli Guo, Huimin Yang, Chenjing Shang
Summary: High valence vanadium-doped NiV-layered double hydroxides catalyst is used for the selective oxidation of benzylamine, replacing the oxygen evolution reaction. The introduction of vanadium changes the electronic state and Lewis acidic sites on the surface, promoting the conversion of benzylamine. A NiV-LDH based two-electrode electrolyzer coupled with the benzylamine oxidation reaction and hydrogen evolution reaction can achieve high current density at a lower cell voltage compared to conventional water splitting methods.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Yuhua Xie, Tiantian Xiong, Chen Li, Han Shi, Cong Zhou, Fang Luo, Zehui Yang
Summary: In this study, a robust bifunctional electrocatalyst composed of 2D Ni-organic frameworks (Ni-MOF) and nitrogen doped carbon nanotubes encapsulated Ni nanoparticles (Ni-MOF@Ni-NCNT) was developed for efficient C-N and H-O bonds dissociation. The presence of Ni-NCNT enhanced the adsorption of OH- species and weakened the binding strength with CO2, resulting in improved urea oxidation reaction performance. The alkaline hydrogen evolution reaction (HER) performance of Ni-MOF@Ni-NCNT was also enhanced due to the synergistic effect of Ni-MOF, Ni nanoparticles, and Ni-Nx-C.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhicheng Zheng, Dan Wu, Long Chen, Shuo Chen, Hao Wan, Gen Chen, Ning Zhang, Xiaohe Liu, Renzhi Ma
Summary: Ni-based hydroxides are excellent electrocatalysts for alkaline urea oxidation reaction (UOR), and appropriate Co element doping greatly improves the UOR performance. Only part of NiCo hydroxides are converted to NiCo oxyhydroxides, which drive the subsequent UOR. The UOR on NiCo oxyhydroxides competes with the redox reaction of NiCo hydroxides.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
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)