Article
Energy & Fuels
Esmail Sohouli, Koroush Adib, Bozorgmehr Maddah, Mostafa Najafi
Summary: This work reports a facile synthesis of a new supercapacitor electrode based on carbon nano-onions/manganese dioxide/iron oxide (CNO/MnO2/Fe3O4) nanocomposite. The prepared nanomaterials were characterized by various techniques, confirming the successful synthesis. The nanocomposite showed suitable supercapacitor properties with a rectangular shape, and exhibited good stability and specific capacitance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
M. Vorokhta, J. Novakova, M. Dopita, I. Khalakhan, V. Kopecky, M. Svabova
Summary: This study demonstrates that the microporosity of three-dimensionally ordered micromesoporous carbon (3DOmm) can be increased by physical activation, leading to improved CO2 capture performance. The activated 3DOmm carbon exhibits a highly porous amorphous structure with increased micropore and mesopore volumes and a higher specific surface area. Furthermore, the activated 3DOmm carbon shows excellent CO2 adsorption performance over a wide pressure range, with fast kinetics and high selectivity for CO2 over N2.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Materials Science, Ceramics
Hilal Pecenek, Sevda Yetiman, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study investigates the effect of carbon nanomaterials and MXene addition on MnO2 based supercapacitor electrodes, and finds that MXene based composite materials exhibit the highest specific capacitance and exceptional cycling efficiency. The favorable interaction between MnO2 and nanoscale materials enhances conductivity and surface area, leading to superior supercapacitor efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Dazhi Zhang, Peng Yang, Yixin Zhang, Honglai Liu, Yunhui Xu, Jianjun Wu, Peipei Li
Summary: Coupling carbon materials and metal oxide has been proven effective in promoting the energy storage performance of supercapacitor electrode materials. In this study, a novel pompon-like activated carbon/manganese dioxide nanosheet composite was successfully prepared via a facile and cost-efficient strategy. The as-prepared composite exhibited excellent electrochemical performance and showed great potential for practical applications in supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Inorganic & Nuclear
Ali Rastegarpanah, Yuxi Liu, Jiguang Deng, Lin Jing, Wenbo Pei, Xing Zhang, Zhiquan Hou, Mehran Rezaei, Hongxing Dai
Summary: The three-dimensionally ordered macroporous (3DOM) nickel-copper mixed oxides prepared using the dual-templating method exhibited high catalytic activity and stability for CO oxidation, attributed to their large surface area, high oxygen adspecies concentration, good low-temperature reducibility, and unique nanovoid 3DOM structure.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Kai Lei, Juan Xie, Chenjie Wang, Jiake Xu, Penghui Bai, Hu Wang
Summary: The study enhanced the photocatalytic performance of TiO2 catalysts for degrading methylene blue by synthesizing and modifying with nickel. The 3DOM structured TiO2 achieved a degradation rate of 82% in 60 minutes, while the Ni-modified 3DOM TiO2 reached 94% in 30 minutes. The impact of microstructure and Ni modification on photocatalytic performance was also discussed.
Article
Chemistry, Physical
Bahare Abdolahi, Mohammad Bagher Gholivand, Mojtaba Shamsipur, Masoud Amiri
Summary: In this study, a supercapacitor based on ordered mesoporous carbon/molybdenum carbide (OMC/Mo2C) nanocomposite was successfully manufactured. The electrode exhibited exceptional electrochemical performance, high capacity, and excellent cycling stability. These findings can contribute to the development of high-performance energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mahrokh Nazari, Mohammad S. Rahmanifar, Abolhassan Noori, Weijun Li, Cheng Zhang, Mir F. Mousavi
Summary: Mesoporous carbon nitrides compositing with graphene aerogel exhibit exceptional supercapacitive performance due to their highly conductive metal-free nanocomposite structure. The specific capacitance of the tailored electrode is significantly higher compared to pristine carbon nitride and graphene aerogel electrodes. This nanocomposite shows excellent long-term stability, high specific energy, and outstanding specific power, indicating its potential for future energy storage applications and related technologies.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Anish Desouza, Peter A. Monson
Summary: A coarse grained lattice gas model is proposed for analyzing the thermodynamics and dynamics of adsorption and desorption in three dimensionally ordered mesoporous carbons. The study shows that the model accurately describes experimental behavior, particularly highlighting the important effect of the spherical geometry of the pores on hysteresis behavior.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2021)
Article
Energy & Fuels
Chia-Sheng Liu, Cheng-Liang Huang, Hsing-Chih Fang, Kuo-Yung Hung, Chien-An Su, Yuan-Yao Li
Summary: The study utilized coaxial fiber cables to achieve high specific capacitance in aqueous solution, high energy density, and power density within a linear working range. The binder-free, conductive-medium-free cable mat is foldable and suitable for use in flexible SC devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Electrochemistry
Shaoyun Chen, Yuanfang Zhang, Du Tian, Qingliang You, Min Zhong, Chenglong Hu, Jian Chen
Summary: The binder-free supercapacitors were fabricated by constructing flexible electrodes using polyaniline (PANI)@MnO2@flexible carbon nanofibers (CNFs) composite. The specific capaci-tance of single PANI@MnO2@CNFs electrode was 654 F/g at the scan rate of 10 mV/s in Na2SO4 electrolyte, with a capacitance retention of about 88.8% after 1000 cycles. The as-prepared symmetric super-capacitor exhibited a maximum energy density of 27.9 Wh/kg at the power density of 400 W/kg, surpassing or comparable to previous PANI-based supercapacitors.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Paper & Wood
Jincy Parayangattil Jyothibasu, Ruei-Hong Wang, Kenneth Ong, Juping Hillary Lin Ong, Rong-Ho Lee
Summary: Nanostructured manganese dioxide (MnO2) was homogeneously deposited on a regenerated cellulose/functionalized CNT (f-CNT) matrix through a direct redox reaction between potassium permanganate and carbon nanotubes (CNTs) in an acidic medium. The resulting cellulose/f-CNT/MnO2 composite films showed outstanding electrochemical performance as freestanding electrodes for supercapacitors, with a maximal areal capacitance of 7956 mF cm(-2) achieved for a high MnO2 content composite. The symmetric supercapacitor assembled using the cellulose/f-CNT/MnO2 composite film exhibited high capacitance, energy density, and power density. The simple and environmentally friendly synthetic procedure can be readily scaled up for bulk synthesis.
Article
Biochemistry & Molecular Biology
Kaelan Rorabeck, Igor Zhitomirsky
Summary: In this study, cathodes for supercapacitors were prepared using MnO2 and carbon nanotubes as materials, and catecholate molecules as co-dispersants to improve capacitive properties. The adsorption of dispersants in ethanol facilitated efficient co-dispersion of the nanostructured components, leading to enhanced charge storage properties. The advanced capacitive properties were attributed to the microstructures of the electrodes prepared in the presence of dispersants.
Article
Materials Science, Multidisciplinary
Xuelin Li, Jianfeng Zhu, Wenyu Liang, Igor Zhitomirsky
Summary: The study presents a simple and direct method to design and fabricate Ti3C2Tx-CNT composite electrodes; the optimized electrodes exhibit higher capacitance than literature results in Na2SO4 electrolyte, laying the foundation for the fabrication of asymmetric aqueous devices operating at 1.6 V.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Qasim Abbas, Lianghua Wen, Abdul Mateen, Najam Ul Hassan, Asim Idrees, Zia Ur Rehman, Majed A. Bajaber, Muhammad Sufyan Javed
Summary: This study synthesized hexagonal-phase manganese dioxide nanoparticles on conductive carbon cloth through a simple hydrothermal strategy. The resulting structure showed a large specific surface area and high porosity, making it an excellent candidate for positive electrode materials in high-performance supercapacitors. The electrode exhibited a high specific capacitance and excellent cycling stability.
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)