Article
Chemistry, Physical
Ziwei Gan, Xiaohe Ren, Mengxuan Sun, Yongxiu Sun, Yijun Yan, Baobao Cao, Wenzhong Shen, Zhijie Li, Yongqing Fu
Summary: Due to the synergistic reaction mechanism among Co(OH)2 and Ni3S4 and the increased active sites by the addition of Mn, the Mn-Co(OH)2/Ni3S4 electrode material exhibits excellent electrochemical properties, including a superior specific capacitance of 1107.0 C g-1 and a capacity retention rate of 72.7% at 10 A g-1. When combined with activated carbon, the Mn-Co(OH)2/Ni3S4 compound achieves a specific capacitance of 157.2 F g-1 and retains 88.9% of its original capacity after 35,000 cycles at 8 A g-1. Furthermore, the assembled hybrid supercapacitor device shows an energy storage capacity of 58.8 W h kg-1 at a power density of 410.4 W kg-1, indicating the great application potential of Mn-Co(OH)2/Ni3S4 in the future.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Mervat Ibrahim, Hani Nasser Abdelhamid, Aya Mohamed Abuelftooh, Saad G. Mohamed, Zhen Wen, Xuhui Sun
Summary: This study presents a method for the synthesis of a triazine covalent organic framework/graphene oxide nanocomposite, which is used to synthesize N-doped carbon/reduced graphene oxide. The in-situ synthesized N-doped carbon/reduced graphene oxide shows superior electrochemical performance and is employed as electrode materials for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Energy & Fuels
Irum Shaheen, Iftikhar Hussain, Taghazal Zahra, Muhammad Sufyan Javed, Syed Shoaib Ahmad Shah, Karim Khan, Muhammad Bilal Hanif, Mohammed A. Assiri, Zafar Said, Waqas Ul Arifeen, Bhargav Akkinepally, Kaili Zhang
Summary: This review discusses the sustainable synthesis approaches for metal oxide nanomaterials in supercapacitors, including their morphological, compositional, and supercapacitive properties. It covers the design and types of supercapacitors based on electrode materials, and comprehensively explains metal oxide-based pseudocapacitive/battery-type electrodes. The review aims to provide guidelines for the sustainable fabrication of metal oxide nanomaterial-based supercapacitors and explain their design and functioning.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Polymer Science
Sami Ur Rahman, Philipp Roese, Anwar ul Haq Ali Shah, Ulrike Krewer, Salma Bilal, Shehna Farooq
Summary: This study demonstrates the surface modification of fluorine doped tin oxide (FTO) with sodium phytate doped PANI without any binder for use as a novel current collector in symmetric supercapacitor devices. The electrode without a binder exhibited higher electrocatalytic efficiency, leading to an efficient energy storage device with high specific capacities and excellent cycling stability. The supercapacitor showed remarkably high gravimetric energy and power density, remaining stable as power density increased, highlighting its potential for practical applications.
Article
Materials Science, Multidisciplinary
Yumei Luo, Xu Feng, Dan Wei, Lingling Zhang, Qingyong Wang, Fan Yang, Shujun Qiu, Fen Xu, Yongjin Zou, Lixian Sun, Hailiang Chu
Summary: The study developed a novel electrode material for energy storage devices by designing the structure and improving conductivity and component synergy. A core-shell composite called Ni-Co-O/NiCo-LDH was constructed using a self-template method. The material showed a Chinese chestnut-like structure with nanoneedles. The electrode exhibited improved pseudocapacitance characteristics and high electrochemical performance, reaching a specific capacitance of 1434 F g(-1) at 1 A g(-1). When combined with activated carbon as the negative electrode, the supercapacitor achieved an energy density of 26 Wh kg(-1) at a power density of 807 W kg(-1). The device also demonstrated excellent cycle stability, with 95% capacity retention after 3600 cycles at 6 A g(-1), expanding its potential applications.
Article
Nanoscience & Nanotechnology
Lin Jin, Xinyue Liu, Zhao Wang, Jiajun Luo, Longzhi Zheng, Mengjie Zhang, Yuhui Ao
Summary: In this study, a porous reduced graphene oxide encapsulated Cu(OH)(2) core-shell structured electrode was fabricated on a carbon fiber substrate using a low-cost and effective method. The resulting electrode exhibited excellent electrochemical properties and energy storage performance, providing a new approach for the fabrication of wearable CF-based supercapacitors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yaqi Wang, Junwei Yang, Yiheng Song, Quanling Yang, Chuanxi Xiong, Zhuqun Shi
Summary: In this study, bio-based cellulose nanofibers and graphene were used to fabricate 3D carbon aerogels with excellent conductivity. The carbonized aerogels showed a specific capacitance of 134.09 F/g at a current density of 0.5 A/g and retained 98.89% capacitance after 5000 cycles. When the temperature increased to 1100 degrees C, the electrochemical performance of the carbonized cellulose nanofiber aerogel significantly improved, with a specific capacitance of 361.74 F/g and a capacitance retention of 99.3% after 5000 cycles. These bio-based cellulose nanofibers hold great promise in the field of supercapacitors.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Yue Sun, Shan Xue, Jinhua Sun, Xingxing Li, Yuchen Ou, Baohuan Zhu, Muslum Demir
Summary: Supercapacitors are attracting attention in energy storage fields due to their safety, cost-effectiveness, and environmental friendliness. Pore carbon materials derived from renewable biomass materials are important and cost-effective electrode materials for supercapacitors. However, the low ionic conductivity of biomass materials limits their electrochemical performance. This study introduces an immiscible liquid-mediated method to improve the ionic conductivity of silk-derived nitrogen-doped porous carbon electrodes. The addition of organic liquid promotes ion transport in the electrode pores, resulting in a specific capacitance of 565.3 F g-1 at a current density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohammad Yeganeh Ghotbi, Fatemeh Abbasi
Summary: In the study of EDLCs, researchers have focused on increasing the accessible surface area and porosity content of carbon electrode materials to improve the energy density. This study discovered that a second heat treatment on synthetic carbon materials reduces surface area and porosity, removes surface functional groups, but increases capacitance due to increased conductivity. These findings suggest that activating the carbon surface and creating more porosity may not necessarily increase capacitance.
SOLID STATE SCIENCES
(2022)
Article
Energy & Fuels
Melih Besir Arvas, Hurmus Guersu, Metin Gencten, Yucel Sahin
Summary: This study investigated the supercapacitor performances of phosphorus-containing functional groups doped graphene electrodes synthesized in one step and environmentally by Yucel's method. Graphene layers in the mesopore structure were observed, and functional phosphorus and phosphorus including functional groups formed on the electrode surface were characterized. Electrochemical characterization and cyclic charge-discharge tests were performed to determine the cyclic stability and capacitive properties of the electrodes. Results showed an increase in the number of different molecular functional groups on the electrode surface with the number of cycles, and the capacity increase in contrary to expectations due to the formation of polyphosphate structures. The highest areal capacitance was determined as 301.3 mF.cm(-2) for P3-GE50 at 10 mA.cm(-2) current density in sulfuric acid solution.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
Yuan Jia, Dan Yang, Lei Zhang, Ying Shi, Jianjun Xie, Fang Lei, Lingcong Fan
Summary: Ionic conductivity is a critical factor affecting the electrochemical performance of double layer capacitor. This study focused on introducing additional ion transport channels using Nafion as binder in electrodes and comparing it with PVDF binder. The results showed that the electrode with Nafion exhibited higher specific capacitance in H2SO4 electrolyte.
Article
Chemistry, Physical
C. Justin Raj, Ramu Manikandan, Murugesan Rajesh, Periyasamy Sivakumar, Hyun Jung, S. Jerome Das, Byung Chul Kim
Summary: In this study, a supercapacitor utilizing activated carbon from cornhusk and seawater as the electrolyte was designed, with the Ti-based electrode showing the best electrochemical performance and stability. The supercapacitor exhibited high specific capacitance, energy density, and stability in seawater electrolyte.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Yu Song, Hong Wu, Biemin Sun, Min Liu, Wucui Ren, Yanqin Xu, Yuan Cao, Changguo Chen
Summary: Folded nanotubes were grown directly on Ni foam using a two-step hydrothermal method to form activated carbon (AC) and NiCo2S4 composite material with a unique nano-urchin structure. The morphology and structure could be controlled by the duration of the hydrothermal reaction. Characterization of the samples was done using XRD, XPS, EDS, and SEM. The electrochemical tests showed that the 12-hour hydrothermal composites (AC@NiCo2S4-2) had a complete folded nanotube structure, a large number of reactive sites, and better electrochemical properties compared to the 6-hour and 24-hour composites. The AC@NiCo2S4-2 also exhibited a high specific capacitance of 653.9 C g-1 at a current density of 1 A g-1, compared to the capacitance of NiCo2S4 (456.14 C g-1). Furthermore, the AC@NiCo2S4-2 showed improved electrochemical performance and cycle stability after combining with AC, with a capacitance retention rate of 62.84% at 10 A g-1 compared to 1 A g-1 and retaining 84.96% of the initial capacitance after 3000 cycles. Additionally, the hybrid supercapacitor (HSC) based on AC@NiCo2S4-2 and AC electrodes achieved a high energy density of 29.75 Wh kg-1 at a power density of 700 W kg-1 and maintained an energy density of 16.86 Wh kg-1 at a high power density of 7000 W kg-1.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Shuai Zhang, Ying Huang, Jiaming Wang, Song Zhang, Xiaopeng Han, Xu Sun
Summary: With the development of electronic technology, there is an increasing demand for flexible power supplies in portable and wearable electronics. Researchers have developed MXene and Co-TCPP nanosheet composites (CoMX) with excellent electrochemical properties through electrostatic self-assembly. The CoMX film electrodes exhibit high specific capacitance and excellent cycling stability, making them promising for flexible energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Sangram Gite, R. S. Ambekar, S. B. Abrish Aaditya, Sarang Joshi, P. B. Karandikar
Summary: Energy primarily exists in the form of electricity for human use, requiring energy storage devices for its storage. Asymmetrical supercapacitors, with horizontally configured electrodes, show promise to replace traditional energy storage devices. This paper analyzes the performance of asymmetrical supercapacitors through statistical modeling, providing insights into how electrode parameters interact and impact specific capacitance. The findings can serve as a basis for studying other electrical energy storage devices such as batteries and fuel cells.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Physical
M. Anne Sawhney, Malik Wahid, Santanu Muhkerjee, Rebecca Griffin, Alexander Roberts, Satishchandra Ogale, Jenny Baker
Summary: Before assessing the feasibility of a cell formulation for commercial sodium ion batteries, the validity and optimization of cell production processes need to be confirmed. This review summarizes the steps involved in constructing sodium ion cells at a research scale, highlighting parameters and techniques that may impact measured cycling performance. The importance of processing on battery performance outcomes suggests the need for further investigation into mechanistic changes of cell components during and after production, in order to inform future designs of these promising batteries.
Article
Chemistry, Analytical
Christopher Gardner, Elin Langhammer, Wenjia Du, Dan J. L. Brett, Paul R. Shearing, Alexander J. Roberts, Tazdin Amietszajew
Summary: This paper investigates the use of plasmonic-based optical fibre sensors as a real-time and in-situ diagnostic technique for lithium-ion batteries. The successful implementation of the fibre sensors inside pouch cells is reported, showing a promising correlation with battery state without impacting cell performance. The research provides insights into the sensor and analyte interaction mechanisms and suggests further developments for opto-electrochemical diagnostic techniques.
Article
Chemistry, Physical
Sakshi Kansal, Paulomi Singh, Sudipta Biswas, Ananya Chowdhury, Debabrata Mandal, Surbhi Priya, Trilok Singh, Amreesh Chandra
Summary: Ni-Co layered double-hydroxides (LDHs) with their lamellar morphology and higher number of active sites show efficient charge transfer, making them highly useful for catalytic applications. A bimetallic LDH catalyst is reported for efficient hydrogenation of p-nitrophenol, a common toxic and carcinogenic pollutant in industrial wastewater. The catalyst demonstrates high performance and a facile synthesis protocol. The catalytic performance at higher temperatures is discussed, and the advantage of Ni-Co LDH as an electrocatalyst for the hydrogen evolution reaction (HER) is explored, indicating potential large-scale industrial use.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Seemita Banerjee, Ananya Chowdhury, Amreesh Chandra, V. Grover
Summary: This study investigates the Ni1-xCoxO system and its potential for energy storage application. The system exhibits interesting phase transitions and Ni0.5Co0.5O shows enhanced electrochemical performance due to its richer redox chemistry.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Puja De, Joyanti Halder, Surbhi Priya, Alok Kumar Srivastava, Amreesh Chandra
Summary: An interconnected sheet-like morphology of low-cost V2O5 is used as a cathode material for aluminum-ion batteries to improve their capacity, rate capability, and cycling stability. The V2O5-based cathode shows excellent performance, with an initial discharge capacity of around 140 mA h g-1 and a capacity retention of 96% after 1000 cycles. The fast intercalation and deintercalation of Al3+ within the stacked layers of V2O5 contribute to these high-performance characteristics, which have been previously ignored in aluminum-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Puja De, Debabrata Mandal, Sudipta Biswas, Abhishek Kumar, Surbhi Priya, Brajesh Kumar Dubey, Alok Kumar Srivastava, Amreesh Chandra
Summary: The slow kinetic nature and poor cycling performance of bulk Na2Ti3O7 (NTO) can be improved by fabricating hierarchical nanostructures. The interconnected 1D nanotubular particles show a much higher electrochemical performance compared to 2D flakes or 3D pillar-like morphologies. High-performance Na-ion supercapacitors can be fabricated using these materials.
Article
Environmental Sciences
D. Mandal, P. De, S. Khatun, A. N. Gupta, A. Chandra
Summary: A high photoluminescence nanosensor based on graphene quantum dots was developed for the detection of toxic ions and compounds in water. The GQDs/Fe(III) complexes showed a high fluorescent quenching efficiency for the hydrophobic surface of the GQDs, enabling the detection of Fe(III) with a concentration of 40 +/- 2 nM. This method is facile, sensitive, and fast, making it ideal for water quality detection in rivers, ponds, or industrial wastes.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Wuttichai Somyanonthanakun, Agata Greszta, Alexander J. Roberts, Sirikanjana Thongmee
Summary: Sugarcane bagasse-based activated carbon was successfully synthesized and used for lead removal from an aqueous solution. The physical and chemical properties of the activated carbon were analyzed, and the adsorption behavior was studied. The Langmuir equation described the adsorption process well, and the adsorption capacity reached 60.24 mg g(-1) with AC850. The activated carbon also showed potential in energy storage applications. Further optimization is needed to improve its lifetime and specific capacitance.
Article
Electrochemistry
Puja De, Lalit Bharti, Joyanti Halder, Surbhi Priya, Amreesh Chandra
Summary: This study reports the use of Mn3O4 nanostructures as cathode materials for aqueous AIBs to enhance specific capacity, rate capability, and cycling stability. Mn3O4 cathode in AlCl3 aqueous electrolyte exhibits the highest initial discharge capacity and excellent capacity retention and cycling stability.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Electrical & Electronic
Sourav Das, Sourabh Pal, Debabrata Mandal, Pallab Banerji, Amreesh Chandra, Rabaya Basori
Summary: Recently, metal-dichalcogenides (MDs) have attracted much attention for future optoelectronic devices due to their unique electronic and optical properties. However, the presence of structural defects hinders the application of MDs in device integration by trapping free charge carriers. In this study, ultraviolet (UV) treatment was used to successfully passivate defects in SnS2, resulting in significant improvement in the performance of the photodetector. The UV-treated SnS2 exhibited higher responsivity, external quantum efficiency, and faster response speed compared to the untreated SnS2.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Physical
Joyanti Halder, Sudipta Biswas, Ananya Chowdhury, Debabrata Mandal, Sakshi Kansal, Surbhi Priya, Puja De, Alok Kumar Srivastava, Amreesh Chandra
Summary: The morphology of the electrode material plays a crucial role in improving the performance of supercapacitors. This study demonstrates the influence of morphology on magnetic supercapacitors by using different morphologies (rod, porous rods, solid spheres, and hollow spheres) of α-Fe2O3 as the negative electrode material. Additionally, a theoretical model is proposed to explain the correlation between the electrochemical response and the diffusion behavior of electrolyte ions. Under a 200 Gauss magnetic field, a 55% increase in specific capacitance is achieved, which is attributed to the change in surface states, as evidenced by the corresponding electrocatalysis performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Sakshi Kansal, Joyanti Halder, Debabrata Mandal, R. Rahul, Surbhi Priya, Puja De, Vikas Sharma, Alok Kumar Srivastava, Trilok Singh, Amreesh Chandra
Summary: Cr2O3 is a promising cathodic material for supercapacitor applications due to its fast redox kinetics, mesoporous structure, and high electrochemical stability. The unique cactus-like morphology of Cr2O3 particles obtained through a one-step synthesis improves the specific surface area and electrolyte ion diffusion, leading to enhanced capacitance values.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Energy & Fuels
Christopher Gardner, Elin Langhammer, Alexander J. Roberts, Tazdin Amietszajew
Summary: This study expands the application of plasmonic based fibre optic sensors in Li-ion NMC111 pouch cells as in-situ diagnostic sensors. The sensors are positioned adjacent to both the negative and the positive electrodes. By analyzing the full cell using incremental capacity analysis and individual electrodes using cyclic voltammetry techniques, the changes in electrode state are identified and their relationship to the plasmonic optical signal is observed. Electrode phase transitions are identified via electrochemical methods and the response of in-situ plasmonic based fibre optic sensors is reported.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Debabrata Mandal, Lalit Bharti, Sudipta Biswas, Amreesh Chandra
Summary: Lithium-ion capacitors (LICs) are becoming useful due to their high energy and power densities. Researchers propose a novel strategy of decorating LiMn2O4 with graphene to improve the electrical conductivity and electrochemical performance of LICs.
Article
Engineering, Electrical & Electronic
Joe Fleming, Tazdin Amietszajew, Alexander Roberts
Summary: Lithium-ion batteries are widely used in high-power, safety-critical applications. However, the current monitoring methods for battery packs have limitations in terms of cost and complexity. This research presents a novel approach of incorporating miniature electronic devices in cells during manufacturing, enabling local data communication without additional wiring. The findings demonstrate that this approach has negligible impact on the cells' performance and offers a new technique for active monitoring of cell conditions.
Article
Physics, Condensed Matter
Shivani Gohri, Jaya Madan, Rahul Pandey
Summary: This study improves the efficiency of SnS-based solar cells by implementing the glancing angle deposition approach and introducing a CZTSSe layer. The findings offer valuable insights for enhancing the design of SnS-based solar cells and making them more efficient.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Mahboubeh Yeganeh, Davoud Vahedi Fakhrabad
Summary: The lattice thermal conductivity of CdO monolayer was investigated, and it was found to be lower than that of bulk CdO due to the lower phonon lifetime and phonon group velocity. As a result, the monolayer exhibits higher thermoelectric efficiency compared to the bulk counterpart.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Shivam Srivastava, Prachi Singh, Anjani K. Pandey, Chandra K. Dixit
Summary: In this research paper, a novel equation of state (EOS) based on finite strain theories is proposed for predicting the thermo elastic properties of various materials. Extensive analysis and comparison with existing models and experimental data demonstrate the validity and effectiveness of the proposed EOS in capturing the unique thermodynamic behavior of nanomaterials, bulk metallic glasses, and superconductors. This research is of great importance in the fields of materials science, nanotechnology, and condensed matter physics.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Subrata Das, Sanjoy Kr Mahatha, Konstantin Glazyrin, R. Ganesan, Suja Elizabeth, Tirthankar Chakraborty
Summary: In this study, we investigated the structural evolution of Tb2Ti2O7 under external pressure and temperature, and confirmed the occurrence of an isostructural phase transition beyond 10 GPa pressure. This transition leads to changes in lattice parameters and mechanical properties, which can be understood in terms of localized rearrangement of atoms.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Hamze Mousavi
Summary: It has been found that undoped graphene sheet has zero states at the Fermi energy level, making it difficult for Cooper pairing to occur in the superconductive state. However, T-graphene, with physical properties similar to graphene, exhibits metallic behavior and has available electron states near the Fermi level. The gap equation for the s-wave superconductive state is derived based on the attractive Hubbard model and the Bogoliubov de Gennes equation for this two-dimensional metallic system. It is found that a nonzero critical temperature, τ, exists for different levels of electron-electron interaction, ǫ. τ has higher values when the system has electronic half band-filling, but decreases when the system does not have half band-filling. However, τ vanishes when ǫ becomes small enough near the band edges.
SOLID STATE COMMUNICATIONS
(2024)
