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
Physics, Condensed Matter
Sadegh Azizi, Majid Seifi, Mohammad Bagher Askari
Summary: The research focused on synthesizing iron and nickel nanoparticles and their hybrid with reduced graphene oxide (rGO) for supercapacitor electrodes. The NiFe/rGO hybrid showed promising performance with a specific capacitance of 1224 F/g and a discharge time of 351 s. The cyclic stability of the electrode composed of both NiFe and rGO was enhanced up to 7%.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Energy & Fuels
J. Bonastre, J. Molina, F. Cases
Summary: Flexible textile supercapacitors were fabricated on jute fabrics by converting insulating jute fibers into electrically conducting material using an optimized reduced graphene oxide (rGO) deposition method. The supercapacitors were composed of jute fabric and polypyrrole (PPy) as the conducting polymer. The use of rGO improved the electrical behavior of the PPy-jute supercapacitors, which exhibited high capacitance values in both 3-electrode and 2-electrode systems. The obtained jute supercapacitors are eco-friendly, low cost, flexible, and exhibit competitive energy-storage performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Nomxolisi Dywili, Afroditi Ntziouni, Miranda M. Ndipingwi, Chinwe Ikpo, Assumpta C. Nwanya, Konstantinos Kordatos, Emmanuel Iwuoha
Summary: GO was synthesized using the modified Hummers method and further reduced to rGO. The rGO showed higher specific capacitance and power compared to GO, making it suitable for supercapacitor applications.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Nurul Hazwani Aminuddin Rosli, Kam Sheng Lau, Tan Winie, Siew Xian Chin, Chin Hua Chia
Summary: In this study, the modification of rGO with sulfur via microwave-assisted synthesis was successfully achieved, resulting in improved electrochemical performance. S-rGO-0.25 exhibited excellent specific capacitance and capacitance retention, showing promising potential for supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
S. Veeresh, H. Ganesha, Y. S. Nagaraju, H. Vijeth, H. Devendrappa
Summary: In this study, novel nanocomposites of activated carbon/graphene oxide/tin oxide (AC/GO/SnO2) and activated carbon/graphene oxide/titanium-zinc acetate dehydrate (AC/GO/TiO2-Zn) were synthesized using hydrothermal method. The structural phase change, morphology, and microstructural arrangement in the nanocomposites were characterized using various techniques. Symmetry supercapacitor electrode devices were fabricated using the nanocomposites and their electrochemical properties were evaluated. The AC/GO/TiO2-Zn electrode demonstrated high specific capacity and cycle stability, indicating its suitability for supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Eslam Aboelazm, Cheng Seong Khe, M. F. Shukur, Kwok Feng Chong, Mohamed Shuaib Mohamed Saheed, Mohamed Barakat Zakaria Hegazy
Summary: CoNi-carbide/reduced graphene oxide hybrids were synthesized by annealing CoNi-cyanide bridged coordination polymers under a nitrogen atmosphere. The hybrids exhibited exceptional electrochemical performance, surpassing the individual components. By optimizing the CoNi-C/rGO ratio, the highest specific capacitance was achieved. Furthermore, a coin cell constructed using CoNi-C/rGO-2 as the positive electrode showed excellent performance and capacitive retention over 8000 charging cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Gbenro Folaranmi, Mikhael Bechelany, Philippe Sistat, Marc Cretin, Francois Zaviska
Summary: The combination of reduced graphene oxide and activated carbon in varying compositions for electrodes showed improved performance in brackish water desalination, with AC/RGO-5 containing 5% RGO exhibiting the highest specific capacitance and salt adsorption capacity. This approach offers a potential way of fabricating electrodes with enhanced electronic conductivity for CDI technology.
Article
Chemistry, Physical
Jiuzeng Jin, NaiYi Wang, Yi Wang, Yuhong Wang, Ting Sun
Summary: In this study, Zn/Ni-MOF/rGO composites were successfully synthesized through a one-step solvothermal method. The synergistic effect of MOF/rGO compounds was proven to play a vital role in promoting the electrochemical performance of supercapacitors via XRD, Raman and FTIR. This work provides a research approach for the design and manufacture of high-performance supercapacitors.
APPLIED SURFACE SCIENCE
(2023)
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
Energy & Fuels
V. N. Kitenge, D. J. Tarimo, K. O. Oyedotun, G. Rutavi, N. Manyala
Summary: This study investigates the effect of different activating agents, temperatures, and impregnation ratios on the porosity of mangosteen shell-derived activated carbons. The synthesized activated carbon shows high specific surface area and specific capacitance, indicating its potential in energy storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Soo Hyun Park, Taelin Kim, Abhijit N. Kadam, Chinna Bathula, Ayman A. Ghfar, Hansang Kim, Sang-Wha Lee
Summary: The rational design of a Z-scheme heterojunction is of great significance for efficient charge separation and solar-light harvesting. In this study, C-Fe2O3@rGO@g-C3N4 was synthesized via hydrothermal and solvothermal reactions, and it exhibited significantly enhanced photocatalytic efficiency in the presence of a hole scavenger.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Yi Sun, Yudan Yuan, Xianwei Geng, Chi Han, Shenkai Lu, Ivona Mitrovic, Li Yang, Pengfei Song, Cezhou Zhao
Summary: This study presents a simple hydrothermal reaction method to adjust the pore size of activated biomass materials for enhanced specific capacitance. The Ti3C2Tx and rGO nanosheets hydrogel demonstrates the best specific capacitance of 403 F g(-1) at 2 mV s(-1), which is approximately 1.5 times higher than pure activated pleumtus eryngii. Additionally, this work provides a technological strategy to reuse commercial activated biochar and has broad industrial applications.
Article
Chemistry, Physical
Xiaoxiao Qu, Sangheon Jeon, Jeonghwa Jeong, Weiwei Kang, Baolin Xing, Chuanxiang Zhang, Suck Won Hong
Summary: As advanced energy storage devices for commercial applications, hybrid supercapacitors (HSCs) assembled with electric double-layer capacitive- and battery-type electrodes combine the advantages of electric double-layer capacitors and batteries. Therefore, it offers very high potential as well as higher energy density with sufficient durability than other energy storage devices. However, the selection of electrodes has a considerable determining effect on the performance of HSCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)