Article
Chemistry, Physical
Haoxuan Wu, Xiaoqiang Yang, Honglong Shen, Haiwen Gao, Zongdeng Wu, Longgang Lu, Fubin Pei, Xiang Wu, Guangyu He, Qingli Hao, Wu Lei
Summary: In this research, Ni(Co)MoO4 hybrid materials with nanoneedle and nanosheet structure were successfully prepared on nickel foam by the hydrothermal method for high-stability supercapacitors. The presence of Co was found to increase the growth of nanoneedles on the surface of NiMoO4/NF, leading to improved cycling performance and capacitance retention. By controlling the molar ratio of Co, better electrochemical performance was achieved, resulting in a high energy density and power density in the asymmetric supercapacitor device. The good performance of the hybrid electrode is attributed to the mutual doping of Ni and Co with a mixed morphology.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Jiwan Acharya, Gunendra Prasad Ojha, Byoung-Suhk Kim, Bishweshwar Pant, Mira Park
Summary: A cost-effective synthesis method involving hydrothermal growth and MOF-mediated sulfidation has been utilized to fabricate Ni-Co-S nanomaterial-integrated hollow and porous NiMoO4 nanotubes coated with rGO for supercapacitor applications. The resulting electrode material shows high specific capacity, excellent cyclic performance, and satisfactory energy density in both a three-electrode configuration and an asymmetric supercapacitor device.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Coatings & Films
M. S. Mahdi, S. Sanjabi
Summary: To improve the interface in Ni/WC infiltration brazed coatings, a thin shell of Cu/Co-P was employed. The proposed coating had very low porosity, resulting in a dense free porosity coating with a homogenous distribution of WC. The coating exhibited a reduced growth rate of WC and improved wear property and hardness compared to conventional WC/NiCrBSi coatings.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Electrochemistry
Lu Luo, Shirui Wang, Yalan Zhou, Wen Yan, Haili Gao, Lingcong Luo, Jianping Deng, Guanben Du, Mizi Fan, Weigang Zhao
Summary: In this study, activated carbon fibers (ACFs) were prepared from discarded fir wood and composites composed of these ACFs and Ni, Co-layered double hydroxides (NiCo-LDH@ACF) were synthesized using a microwave-assistant hydrothermal strategy. The resulting core-shell structures with sheet-or microsphere-like morphologies provide a large surface area and numerous active sites for efficient charge and mass transfer. The NiCoLDH@ACFs were used to construct high-performance supercapacitors, and an asymmetric supercapacitor was also assembled using activated carbon derived from fir bark. The resulting devices exhibited excellent capacitance, energy density, and cycle life.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Environmental
Weijing Liu, Fangfang Zhu, Baoxin Ge, Lin Sun, Yu Liu, Weidong Shi
Summary: The research focuses on achieving a high energy density of nickel cobalt bimetallic selenide electrode materials through the construction of porous materials and control of the appropriate proportion of active materials. By designing a well-structured ZnO/C@(Ni,Co)Se2 core-shell nanostructure, the electrode exhibits superior specific capacity and energy density, while maintaining cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ren Xie, Shucheng Liu, Yongchao Rao, Abdou Karim, Xiaosi Qi, Haifu Huang, Haicheng Xuan
Summary: By constructing core/shell heterostructure, Ni-Co-X/Co(OH)(2) composites achieved enhanced electrochemical performance, with NiCoP/Co(OH)(2) composite showing excellent catalytic activity and charge storage capability. The composite exhibited low overpotential, low Tafel slope, long-term stability, high specific capacitance, remarkable rate capability, and cyclic stability, attributed to enriched active sites, enhanced electronic conductivity, and strong synergistic effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Ping Yang, Lina Feng, Shaohua Wang, Jianjun Shi, Honglong Xing
Summary: The core-shell structured Ni@Ni3S2@NiCo2O4 nanoflakes synthesized using a universal strategy exhibit excellent electrochemical performance with high specific capacitance and cycling stability. Assembling a hybrid supercapacitor with these nanoflakes as positive electrode, activated carbon as negative electrode, and KOH as electrolyte results in a device with high energy density, power density, and good cycling stability.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
V Kumar, V Gajraj, K. Gnanasekar, S. Dsoke, S. Indris, H. Ehrenberg, B. Roling, C. R. Mariappan
Summary: The research on mesoporous spinel-analogous Zn-Ni-Co-O nanorods demonstrates that they have a high specific energy density and excellent performance in aqueous supercapacitor devices, indicating great potential for future applications in electrochemical energy storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ying Xue, Xilong Liu, Leiyun Han, Zhengjie Xie, Liangyu Liu, Yixin Li, Yingjie Hua, Chongtai Wang, Xudong Zhao, Xiaoyang Liu
Summary: The present study successfully synthesized a core-shell hybrid structure of NiCo2S4 nanotubes@NiMn-LDH nanosheets on Ni foam. The optimized NiCo2S4 @NiMn-LDH electrode exhibited high specific capacity and excellent cycling stability, making it promising for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ming Zhang, Xuwen Wu, Dongzhi Yang, Liyuan Qin, Shiyi Zhang, Ting Xu, Tianyu Zhao, Zhong-Zhen Yu
Summary: This research successfully prepares high-performance flexible supercapacitors by designing porous carbon nanofibers with attached active materials on their surfaces. These supercapacitors exhibit high specific capacitance and energy density, and maintain stability even after bending, making them suitable for high-performance wearable energy storage devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Diab Khalafallah, Mingjia Zhi, Zhanglian Hong
Summary: In this study, nanostructured bismuth-iron chalcogenide anchored on multiwalled carbon nanotube framework (Bi-Fe chalcogenide/C)-based electrode materials were fabricated with enhanced electrochemical performances. These materials showed high specific capacitance, high-rate capability, and cyclic stability, due to the collaborative effect of multiple components and the structural and amorphous merits. The hybrid device using core-shell Bi-Fe-P@Ni-P as a positive electrode and amorphous Bi-Fe-P/C as a negative electrode delivered a high specific energy density at a power density together with good cyclic characteristics, showing the proficiency of heterostructured multicomponent electrodes for enhancing the electrochemical performance of asymmetric supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jiwan Acharya, Bishweshwar Pant, Gunendra Prasad Ojha, Mira Park
Summary: Researchers have developed high-capacity electrode materials for energy storage devices by integrating transition metal selenide with transition metal oxides on a carbonaceous material substrate. The resulting core-shell structure exhibits excellent electrochemical performance and shows promise for practical applications in energy storage devices and supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Baole Li, Ke Zhang, Shaopeng Qi, Yanmei Guo, Jinxi Chen, Yongbing Lou
Summary: This study successfully improves the cyclic stability of pseudocapacitive materials by constructing a hierarchical ZnCo2O4-ZnO/ZnCo2O4 core-shell microarchitecture composite. The material exhibits high specific capacity, ultra-high rate capability, significant pseudocapacitance contribution, and ultra-long cycle stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Ying Xiao, Ge Ye, Mingjiang Xie, Yan Zhang, Jian Chen, Cheng Du, Liu Wan
Summary: A novel strategy is proposed to improve the energy density and cycling stability of transition metal metaphosphates (TMPOs) for supercapacitors. A core-shell heterostructure of cobalt nickel metaphosphate (Co0.2Ni0.8(PO3)2)@nickel diselenide (NiSe2) is constructed on carbon paper as a flexible electrode. The electrode exhibits a specific capacity of 219.4 mAh/g/0.414 mAh cm-2 at 1 A/g and good cycling stability with capacity retention of 90.7% after 5000 cycles, surpassing previously reported TMPO-based electrodes. An asymmetric supercapacitor (ASC) device assembled with this electrode achieves an energy density of 69.2 Wh kg-1 at 736.0 W kg-1 and maintains a capacity retention of 97.6% after 20,000 charge-discharge cycles.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ning Song, Shihuan Hong, Mengya Xiao, Yan Zuo, Enhui Jiang, Chunmei Li, Hongjun Dong
Summary: This study utilizes a noble-metal-free core-shell modification method to enhance the electrocatalytic activity of NiCo-LDH in the hydrogen evolution reaction, while also improving its electrochemical stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
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)