Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Ravindra N. Bulakhe, Vinayak G. Parale, Jayavant L. Gunjakar
Summary: By using two-dimensional graphene oxide nanosheets as a hybridization matrix, the electrode performance of layered double hydroxides can be improved. The study showed that the hybridized nanohybrids exhibited enhanced specific capacity, high electrical conductivity, and improved charge transfer kinetics. Aqueous and solid-state hybrid supercapacitors fabricated using the optimized nanohybrids demonstrated excellent specific capacitance, energy, and power performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Ravindra N. Bulakhe, Vinayak G. Parale, Jayavant L. Gunjakar
Summary: This study demonstrates the use of conductive graphene oxide as an efficient hybridization matrix to improve the electrode performance of LDHs, leading to enhanced specific capacity and high-rate characteristics in aqueous and all-solid-state hybrid supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Subbiah Vijaya, Piyush Sharma, Belqasem Aljafari, Sambandam Anandan
Summary: In this study, a cobalt-manganese-layered double hydroxide (CoMn-LDH) with desirable electrochemical properties was synthesized via a one-step hydrothermal technique. The nanorod-shaped surface morphology was revealed, and the asymmetric construction approach led to the fabrication of electrodes with high specific capacitance and energy density. Furthermore, the electrodes exhibited high capacity retention at a high current density.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Liuyang Zhang, Pengfei Cai, Zhihao Wei, Tao Liu, Jiaguo Yu, Ahmed A. Al-Ghamdi, S. Wageh
Summary: NiCo-LDH/rGO electrodes were designed with high capacitance and good rate performance, thanks to the incorporation of graphene and NiCo-LDH. Asymmetric supercapacitors assembled with these materials exhibited high energy density and power density, indicating significant application potential.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Prakash Chandra Lohani, Arjun Prasad Tiwari, Kisan Chhetri, Alagan Muthurasu, Bipeen Dahal, Su-Hyeong Chae, Tae Hoon Ko, Jun Youb Lee, Yong Sik Chung, Hak Yong Kim
Summary: In this work, a transition metal-based electrode material with high energy storage capabilities was designed. The material is composed of thin layered double hydroxide (LDH) nanosheets assembled onto polypyrrole tunnels on a carbon cloth. The resulting electrode exhibits excellent specific capacity, rate capability, and cyclic stability, which can be attributed to the strategic organization of the materials. Additionally, an asymmetric supercapacitor device assembled with this electrode material and vanadium phosphate-incorporated carbon nanofiber electrodes shows high specific energy density and power density.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Qindan Xiao, Yuan Yuan, Juncheng Zhu, Zhicheng Shi, Zhong Li, Jiliang Zhu
Summary: A facile chemical co-precipitation method is reported for the preparation of nickel-cobalt layered double hydroxide (Ni, Co-LDH). The controlled introduction of carbonate ions (CO32-) through the addition of NaHCO3 causes the nanosheet structure to bend and inter-connect, increasing the contact area between the electrode and the electrolyte and enhancing the energy storage characteristics. Appropriate CO32- doping effectively increases the specific capacity and rate capability of Ni, Co-LDH.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Wei Yan, Ying Zhang, Ting Zeng, Yuanyuan Zhang, Qijin Wan, Nianjun Yang
Summary: In this study, a hybrid material of nickel-manganese LDH/holey reduced graphene oxide (NiMn-LDH/hrGO) was synthesized using a one-step solvothermal technique. The addition of hrGO improved the conductivity and surface area of the NiMn-LDH/hrGO electrode. The material exhibited high specific capacity and excellent capacity retention in supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Shrikant V. Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Akash S. Patil, Umakant M. Patil, Vikas V. Magdum, Yogesh M. Chitare, Shirin P. Kulkarni, Shital B. Kale, Ravindra N. Bulakhe, Deu S. Bhange, Saji T. Kochuveedu, Jayavant L. Gunjakar
Summary: In this study, porous layer-by-layer self-assembled nanohybrids of Co-Cr-LDH/CCW were prepared using a lattice engineering exfoliation-reassembling route, exhibiting exceptional electrochemical activity. The AHAS and ASHAS devices fabricated using these nanohybrids demonstrated high specific capacitance and excellent cycle stability.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Cheng Jin An
Summary: This research successfully synthesized a novel structure of Ni-Fe layered double hydroxide interconnected nanoweb using wet-chemistry synthesis method at low temperature. The 3D porous structure with interconnected nanowires provides a large surface area and facilitates electron transport, resulting in higher specific capacitance and energy density compared to conventional nanoplate structures. This unique structure offers great potential for high-performance supercapacitor preparation.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Energy & Fuels
Yezeng He, Didi Liu, Houqiang Zhao, Jiemei Wang, Yanwei Sui, Jiqiu Qi, Zheng Chen, Ping Zhang, Changjiu Chen, Dongdong Zhuang
Summary: The study successfully prepared C/NiMn-LDH/Ni3S2 electrode material, which maintained a high capacitance even after 5000 cycles, and the two-electrode device assembled with activated carbon showed excellent specific energy.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Li Yu, Xiaocai Ma, Qin Liang
Summary: The relationship between morphology and supercapacitor performance of layered double hydroxides (LDHs) was studied. It was found that the curly sheets of Ni1Co4-LDH exhibited the best capacitance performance due to the increased conductivity. The Co content also influenced the capacitance performance of NixCoy-LDHs.
Article
Energy & Fuels
Kai Zhao, Zihao Wang, Xiaolin Sun, Hanwen Guo, Hucheng Fu, Zhongqi Lu, Zhen Liu, Jingquan Liu
Summary: The ingenious use of renewable and degradable biomass glucose materials to replace traditional organic synthetic materials can create huge economic benefits and potential ecological environmental protection. In this work, interconnected nano-porous carbon/nickel-cobalt layered double hydroxide (INPC/NiCo-LDH) composites were successfully fabricated through calcination and solvothermal techniques. The obtained INPC/NiCo-LDH composite exhibited high mass capacitance, good rate capability and cycling performance. The assembled INPC/NiCo-LDH//INPC asymmetric supercapacitor (ASC) showed excellent capacitive performance and high energy density.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Woo-Sik Jeon, Chang Hyo Kim, Jae-Hyung Wee, Ji Hoon Kim, Yoong Ahm Kim, Cheol-Min Yang
Summary: A study successfully synthesized porous S-doped graphene spheres and desulfurized graphene spheres with improved electrochemical behavior, higher electrical conductivity, and better surface wettability. The S-doped graphene electrode demonstrated superior electrochemical performance compared to the desulfurized graphene electrode.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Saji T. Kochuveedu, Umakant M. Patil, Akash S. Patil, Ravindra N. Bulakhe, Chandrakant D. Lokhande, Insik In, Rahul R. Salunkhe, Jayavant L. Gunjakar
Summary: An exfoliation-reassembling process was used to develop mesoporous intercalative nanohybrids of cationic 2-D cobalt-chromium-layered double hydroxide nanosheets and polyoxovanadate anions, which exhibited promising performance in asymmetric supercapacitors devices.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Abhijith R. Nair, B. Thanigai Vetrikarasan, Surendra K. Shinde, Dae-Young Kim, Shilpa N. Sawant, Ajay D. Jagadale
Summary: This study presents a facile method for the fabrication of CuO@CoV LDH core-shell structure, which shows potential applications in supercapacitors and electrocatalysis with high specific capacitance, high conductivity, and lower overpotential.
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)