Article
Chemistry, Physical
Mohammad Bagher Askari, Parisa Salarizadeh, Majid Seifi, Mohammad Hassan Ramezan Zadeh, Antonio Di Bartolomeo
Summary: Binary transition metal oxides (BTMOs) show potential for supercapacitor applications due to high theoretical capacity, with zinc and iron-based BTMOs being investigated in this study. Nano-engineering ZnFe2O4-rGO improved electrode performance, increasing capacitance and cyclic stability for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Jacob Strimaitis, Samuel Adjepong Danquah, Clifford F. Denize, Sangram K. Pradhan, Messaoud Bahoura
Summary: Researchers incorporated synthesized GO and rGO in AC electrodes and found that they moderately enhance the rate resistance and capacity. However, the overall ineffectiveness of GO and rGO is attributed to their isolation and infrequent distribution method.
Article
Energy & Fuels
Qana A. Alsulami, Laila M. Alharbi, Sherif M. A. S. Keshk
Summary: This study successfully synthesized a ternary composite electrode material consisting of graphene oxide, spinel zinc ferrite, and polyaniline, which exhibited significantly enhanced capacitance. The intercalation of polyaniline through in situ polymerization played a crucial role in improving the electrochemical properties of the material.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Jemini Jose, J. Vigneshwaran, Anjana Baby, Raja Viswanathan, Sujin P. Jose, P. B. Sreeja
Summary: A three dimensional hybrid nanoarchitecture consisting of two-dimensional reduced graphene oxide, one-dimensional multiwalled carbon nanotube, and zero-dimensional zirconium oxide nanoparticles was synthesized for high performance supercapacitors. The synergistic effect of different dimensional materials in the composite structure led to excellent capacitance and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Weiwen Chen, Chunfeng Hao, Zenghui Qiu, Xin Zhang, Haijun Xu, Bingzhe Yu, Shaowei Chen
Summary: In this study, a 3D layered Ti3C2TX@NiO-RGO heterostructured hydrogel with ultrahigh specific capacitance was successfully synthesized. It was found that a defective RGO hydrogel exhibited a higher specific capacitance. The combination of these two materials as electrode in an ASC showed a large operating voltage, high energy density, and remarkable cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Sang Hwa Lee, Jungjun Lee, Jaemin Jung, A. Ra Cho, Jae Ryeol Jeong, Cu Dang Van, Junghyo Nah, Min Hyung Lee
Summary: The evolution of smart life requires microscale energy storage devices with high power and energy density to integrate IoT devices with sustainable power generators. Pseudocapacitors are considered efficient energy storage devices due to their longer cyclability and high-power density compared to Li-ion batteries, but there are difficulties in patterning microscale electrodes using conventional methods. A one-step fabrication method of micro-supercapacitors was developed through the in situ formation of Co metals and reduced graphene oxides in a one-pot laser scribing process, resulting in a Co/rGO MSC with four times higher capacitance than rGO MSC.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Lan-Juan Zhou, Xi-Xi Zhang, Wen-Yuan Zhang
Summary: In this study, ZnFe2O4 nanorods were prepared using Zn/Fe metal organic framework (MOF) as precursors, and a ZnFe2O4/reduced graphene oxide (rGO) composite was prepared by hydrothermal method. The composite exhibited better SO2 gas sensing performance at room temperature.
Article
Materials Science, Ceramics
Dharshini Mohanadas, Nur Hawa Nabilah Azman, Jaafar Abdullah, Nor Azam Endot, Yusran Sulaiman
Summary: A novel bifunctional ternary oxide/reduced graphene oxide composite was developed for asymmetric electrochromic supercapacitor application, showing excellent distribution and high specific capacitance, as well as outstanding electrochromic and supercapacitive performance.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Bo-wen Deng, Yi Yang, Yu-xin Liu, Bo Yin, Ming-bo Yang
Summary: This work presents a hierarchical structure design of mixed holey graphene oxide (HGO) and Ni (OH)(2) active material layer for creating an asymmetric solid supercapacitor (ASC) device with flexible and high electrochemical performance. The effects of hydrothermal treatment and ice-template freezing parameters on electrochemical stability under repeated deformation are discussed, and the optimal parameters result in a high areal capacitance of 479.8 mF/cm(2). The use of porous HGO and oriented GO aerogel synergistically contribute to high energy and power density, as well as excellent electrochemical performance retention under repeated deformation. The electrode assembly provides guidance for future supercapacitor design.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(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
Hamid Reza Naderi, Pooya Nadri, Amir Mohammad Sorouri, Mohammad Reza Ganjali, Hermann Ehrlich, Mehdi Rahimi-Nasrabadi, Farhad Ahmadi
Summary: For the first time, Eu-2(WO4)(3) nanoparticles (EWNPs) were successfully fabricated and anchored on reduced graphene oxide (RGO) to form EWNP/RGO nano-composites. The resulting nanostructured material exhibited high specific capacitance and good supercapacitive behavior, with relatively high capacitance retention after cycling tests.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Taegun Kim, Edmund P. Samuel, Chanwoo Park, Yong-Il Kim, Ali Aldalbahi, Faisal Alotaibi, Sam S. Yoon
Summary: In this study, wearable supercapacitor textiles were produced by depositing rGO and SnO2 on fabric using supersonic spraying, investigating the synergistic effect of the two materials on electrochemical performance. The combination of rGO and SnO2 enhanced charge transport within the composite electrode, while the porous structure of the fabric allowed for sufficient electrolyte diffusion. The optimized sample exhibited high specific capacitance and capacitance retention, confirming the mechanical durability of the wearable supercapacitor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Arijit Kapuria, Tapas Kumar Mondal, Bikash Kumar Shaw, Yan-Kuin Su, Shyamal K. Saha
Summary: Functionalized carbon based 2D materials show promise as low cost and environmentally friendly electrocatalysts for hydrogen evolution reaction (HER) and supercapacitor applications. Metal free polysulfide functionalized reduced graphene oxide (GPS) is successfully synthesized as an efficient HER electrocatalyst and energy storage device. The material exhibits high current density and specific capacitance due to the synergistic effect of the graphene network and polysulfide functionalizations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Dharshini Mohanadas, Nur Hawa Nabilah Azman, Yusran Sulaiman
Summary: A ternary nickel oxide/vanadium oxide/reduced graphene oxide electrode was developed, demonstrating outstanding specific capacitance and excellent cycling stability. The device also allowed for visual detection of energy storage through color changes. Therefore, it shows promising potential for future applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Biomaterials
Longyi Chen, Songlin Yang, Michelle Dotzert, C. W. James Melling, Jin Zhang
Summary: A hybrid rGO-based MR sensor has been developed to monitor blood glucose levels and quickly detect hypoglycemia. The sensor shows a large negative MR at room temperature under a small magnetic field. A two-step process using a sandwich structural MR sensor has been developed to quickly detect low concentration of glucose in a small amount of blood. The sensor has demonstrated accuracy in measuring low concentration of plasma glucose.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Nanoscience & Nanotechnology
Yuewen Shao, Junzhe Wang, Kai Sun, Guoming Gao, Mengjiao Fan, Chao Li, Cong Ming, Lijun Zhang, Shu Zhang, Xun Hu
Summary: Cu-based nanocatalysts derived from Mg-Al layered double hydroxides were used to catalyze the conversion of HMF to 1,2-HDO. The introduction of Mg species facilitated the formation of Cu nanoparticles with a smaller size, mesoporous structures, abundant basic sites, and more surface area of metallic Cu sites, resulting in superior catalytic behavior and reusability.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yuewen Shao, Kai Sun, Mengjiao Fan, Guoming Gao, Junzhe Wang, Lijun Zhang, Shu Zhang, Xun Hu
Summary: This study adopted alloying Cu with Ni and Zn to suppress sintering of copper species in aqueous phase reactions. The CuNiZn alloy and Bronsted acidic sites exhibited synergy, leading to enhanced activity and catalytic stability for the production of cyclopentanone and cyclopentanol from furfural. The formation of the ternary CuNiZn alloy weakened the adsorption of C=C bond in furfural, while enhancing the activation of C=O and C-O-C bonds, avoiding deep hydrogenation of the furan ring and facilitating the rearrangement of furfuryl alcohol to cyclopentanone.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Wenran Gao, Zixiang Lin, Shanshan Yan, Yaxuan Gao, Hong Zhang, Xun Hu, Hongqi Sun, Shu Zhang
Summary: Biochar was prepared by hybrid doping of N, O, and S using one-pot pyrolysis of poplar wood and S-containing urea formaldehyde. This hybrid doping significantly enhanced the removal efficiency of tetracycline in wastewater. The adsorption process was dominated by chemisorption and the adsorption capacity was related to the concentration of graphitic N and oxidized N and S.
Article
Chemistry, Physical
Shuhua Yang, Yanwei Cui, Guangxu Yang, Songfang Zhao, Jieqiang Wang, Degang Zhao, Chao Yang, Xiutong Wang, Bingqiang Cao
Summary: In this study, a hierarchical porous carbon induced by ZnCl2 from corncob cellulose is developed through a single-step activation process. The material exhibits suitable micropores for high energy storage and sufficient mesopores for high-rate performance, thereby improving the performance of zinc-ion hybrid supercapacitors. The optimized hierarchical porous carbon shows high specific capacity, high energy density, and good cycling stability. The assembled quasi-solid-state flexible hybrid supercapacitor also demonstrates high specific capacity, satisfactory mechanical properties, and promising application prospects.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Guangxu Yang, Shuhua Yang, Jian Shen, Yanwei Cui, Jinfeng Sun, Guangbin Duan, Bingqiang Cao, Zongming Liu
Summary: Due to its high safety and low cost, aqueous Zn-ion batteries (AZIBs) have become one of the most promising energy storage devices. In this study, a stable cathode with fast kinetics and high-energy density, KOH-induced oxygen-deficient VO2 (K-VO2), was developed. The K-VO2 cathode achieved improved kinetics and enhanced Zn-ion storage capability through unique morphology, abundant active sites, and oxygen vacancy. The optimized K-VO2-3:4 demonstrated excellent electrochemical performance, indicating the potential of the KOH activation strategy for developing high-energy and stable cathodes.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Felix Merime Bkangmo Kontchouo, Lijun Zhang, Shu Zhang, Guangzhi Hu, Xun Hu
Summary: In steam reforming of oxygen-containing organics and hydrocarbons in a fixed-bed reactor, the distribution of coke formation in different sections of the catalyst bed varied. The intermediates from oxygen-containing organics could only form coke in the upper-layer catalyst, while the hydrocarbon intermediates could easily penetrate and form more coke in the lower-layer catalyst. Insufficient gasification of certain hydrocarbon species resulted in the formation of aromatic coke, while aromatic-ring containing intermediates tended to form less aromatic coke. Steam reforming of oxygen-containing organics also produced coke with higher aliphatic nature, lower C/H ratio, lower crystallinity, and lower thermal stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Food Science & Technology
Haisheng Lin, Yuchen Jiang, Zijun Yi, Lijun Zhang, Shu Zhang, Kuan Ding, Bin Li, Shuang Wang, Xun Hu
Summary: This study investigates the potential involvement of fatty esters in cooking oil in the hydrothermal carbonization (HTC) of food waste. Cooked cabbage and rice were used as feedstock, and their HTC was conducted with vegetable oil and lard. The results show that the presence of cooking oil increases the hydrochar yield and alters its composition, reducing oxygen content and improving combustion performance.
ACS FOOD SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hua Zhang, Zenghui Bi, Pengliang Sun, Anran Chen, Thomas Wagberg, Xun Hu, Xijun Liu, Laiming Jiang, Guangzhi Hu
Summary: We designed a heterophase electrocatalyst with dense heterogeneous interfacial sites to enhance the oxygen evolution reaction (OER) performance. The synergistic effect of high-density crystalline and amorphous heterogeneous interfaces effectively promotes charge redistribution and optimizes the adsorbed oxygen intermediates, leading to increased OER catalytic activity.
Article
Chemistry, Multidisciplinary
Jingbo Qi, Yanbiao Ren, Lincai Zhang, Xun Hu
Summary: In this study, five types of nano metal oxide supported Ni catalysts were prepared and evaluated for liquid-phase furfural hydrogenation. Among them, Ni/MgO catalyst exhibited superior performance with a high conversion rate of furfural and a high selectivity of furfuryl alcohol. The catalytic characterization results indicated that when MgO was used as the support, a solid solution of NiO-MgO was formed, resulting in highly dispersed amorphous Ni on the support surface, which contributed to the high selectivity of furfuryl alcohol. Additionally, a slight decrease in catalytic activity of Ni/MgO may be attributed to the formation of Mg(OH)2 during cyclic utilization.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Jie Zheng, Shuaitao Li, Yuanrong Zhang, Peng Zheng, Xun Hu, Yanfen Fang, Ran Duan, Qifeng Chen
Summary: The conversion of CO2 into high-value-added chemicals through photocatalysis is significant. Ceria (CeO2) has been extensively studied for this purpose, but its surface oxygen vacancies (V(O)s) are unstable. This study found that the coordination of highly dispersed Ag species can stabilize the V(O)s of CeO2, allowing for selective photocatalytic CO2 conversion. The synergy between Ag species and V(O)s promotes the adsorption, activation, and selectivity of CO2 molecules, leading to enhanced photocatalytic activity.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Chao Li, Yuannian Li, Yuewen Shao, Lijun Zhang, Shu Zhang, Shuang Wang, Bin Li, Zhenhua Cui, Yonggui Tang, Xun Hu
Summary: In the chemical activation of biomass, directly mixing an activating agent and feedstock leads to poor activation efficiency. This study proposed the use of volatilized KOH to activate biomass by placing them in separate beds. The results showed that this method resulted in higher yield and better quality of activated carbon compared to direct activation. It also reduced environmental impact and improved material efficiency.
Article
Chemistry, Multidisciplinary
Yuewen Shao, Mengjiao Fan, Kai Sun, Guoming Gao, Chao Li, Dianqiang Li, Yuchen Jiang, Lijun Zhang, Shu Zhang, Xun Hu
Summary: The selective depolymerization of PET plastics to p-xylene is challenging, but in this study, the modification of Co-Al catalysts by introducing a second metal has successfully achieved high yields of p-xylene. Co-Fe-Al catalyst suppressed the hydrogenation of the benzene ring, while Co-Al and Co-Ni-Al catalyzed the hydrogenation and cleavage of the C-C bond in intermediates. Co-Fe-Al showed better adsorption and activation of oxygen-containing functionalities for deoxygenation reactions.
Article
Chemistry, Multidisciplinary
Liying Yin, Zenglong Xu, Guangxu Yang, Fuhai Guo, Wenhui Guo, Songfang Zhao, Shuhua Yang
Summary: In this work, electrospun VO2/carbon fibers with a three-dimensional network structure were obtained and used as cathode materials for aqueous zinc-ion batteries. The carbon fiber network significantly improved the conductivity and stability of VO2, resulting in a higher specific capacity compared to pure VO2. Excellent capacity retention at high current density was also achieved.
Article
Chemistry, Physical
Guangxu Yang, Shuhua Yang, Jinfeng Sun, Guangbin Duan, Bingqiang Cao, Zongming Liu
Summary: Aqueous Zn-ion batteries (AZIBs) have emerged as a promising energy storage solution due to their high safety and low cost. This study presents a one-step hydrothermal method to develop W-doped VO2 cathodes, which exhibit improved kinetics and long cycle life. The W-VO2 cathode demonstrates high capacity, excellent high-rate capability, and long-term cycling stability, outperforming pure VO2. The W doping strategy proposed in this work offers a promising pathway for developing other high-energy and stable cathodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Guangxu Yang, Shuhua Yang, Jinfeng Sun, Guangbin Duan, Bingqiang Cao, Zongming Liu
Summary: Aqueous Zn-ion batteries (AZIBs) are gaining attention as promising energy storage devices due to their high safety and low cost. This study successfully developed a W-doped VO2 cathode material (W-VO2) through a one-step hydrothermal method, which exhibits improved kinetics, high energy density, and long cycle life. The W doping strategy proposed here also shows potential for developing other high-energy and stable cathodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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)
