Article
Electrochemistry
Xiaozhong Wu, Hua Li, Xinping Yang, Xin Wang, Zhichao Miao, Pengfei Zhou, Jinping Zhao, Jin Zhou, Shuping Zhuo
Summary: Reduced graphene oxide hydrogels exhibit high potential resistance in acid electrolyte and can achieve high specific capacitance with the introduction of extra pseudocapacitance through KI, leading to a good supercapacitive performance.
Article
Energy & Fuels
Bhaskar J. Choudhury, Kajal Ingtipi, Vijayanand S. Moholkar
Summary: This study demonstrates an eco-friendly and sustainable approach for developing high-energy-density aqueous supercapacitors. By using reversible electrodes and water-in-salt electrolyte, the energy density of reduced graphene oxide-based aqueous symmetric supercapacitors is significantly increased.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Hsin-Ju Lo, Man-Chen Huang, Yong-Hong Lai, Hsun-Yi Chen
Summary: These studies demonstrate that the Ni(OH)(2)-rGO supercapacitor with lithium-ion GPE can bi-functionally serve as either a battery-like or capacitor-like device, with high specific capacity, energy, and power characteristics.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Boran Tao, Na Zhang, Tian Ye, Pengfei Gao, Hongda Li, Yuanmiao Xie, Jinghua Liu, Guofu Wang, Wenfeng Zhang, Haixin Chang
Summary: A mantis shrimp shell is converted into a 3D bicontinuous porous carbon material with high surface area and pore volume, and the introduction of Fe2+ enhances the specific capacitance and operating voltage of the material. It shows great potential in electrochemical energy storage.
NEW JOURNAL OF CHEMISTRY
(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
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, 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
Electrochemistry
Weiyang Zhang, Yanchun Li, Hongwei Kang, Baocheng Yang, Zhikun Li, Huili Liu
Summary: In this study, 2,6-diaminopyridine (DAP) decorated reduced graphene oxide (RGO) composites were synthesized and demonstrated to have excellent electrochemical properties, including higher specific capacitance, enhanced rate capability, good conductivity, and excellent cycling stability.
ELECTROCHIMICA ACTA
(2022)
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
Chemistry, Multidisciplinary
Manoj Goswami, Mattath Athika, Satendra Kumar, Perumal Elumalai, Netrapal Singh, N. Sathish, Surender Kumar
Summary: This paper investigates the application of metal chalcogenides in sodium ion capacitors, successfully synthesizing CuS and CuS-G electrodes with good ion storage performance.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
V. Uma Shankar, P. Senthil Kumar, D. Govindarajan, P. Nethaji, G. Bharath Balji
Summary: A high-performance symmetric electrochemical capacitor based on ruthenium dioxide anchored on reduced graphene oxide nanostructures was developed and tested in Na2SO4 aqueous electrolyte. The rGO/RuO2 electrode showed a high cyclic efficiency of 96%, considerably higher than pure RuO2.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Electrochemistry
Poonam Siwatch, Kriti Sharma, Navjot Singh, Nirmal Manyani, S. K. Tripathi
Summary: Nanocomposite films of NCO-rGO were prepared using a chemical method, with the specific capacitance of NCO5-rGO(1.5) shown to be significantly higher than rGO alone. An asymmetric supercapacitor was fabricated with a wide potential window, showing promise for the design of high energy density supercapacitors in the future.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Vitaly V. Chaban, Nadezhda A. Andreeva
Summary: This study investigates the electrode-electrolyte interactions at the cathode using molecular dynamics simulations. The results provide important insights for the design of electrolyte compositions and electrode materials for supercapacitors and alkali-ion batteries.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Electrochemistry
S. M. Patil, S. R. Shingte, V. C. Karade, J. H. Kim, R. M. Kulkarni, A. D. Chougale, P. B. Patil
Summary: This study aimed to improve the electrochemical performance of RGO by decorating it with MNPs and evaluated their performance in various aqueous electrolyte solutions. The results showed that MRGO exhibited higher redox peak current and lower peak potential separation in FC-PBS-KCl electrolyte solution. In addition, MRGO demonstrated superior performance in terms of specific capacitance and cyclic stability in KOH compared to Na2SO4 electrolyte solution. The enhanced electrochemical performance of MRGO was attributed to the synergistic effect of RGO conductivity and MNPs redox activity.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Feng Wei, Yaohui Lv, Shouquan Zhang, Jiandong Zheng
Summary: A novel strategy using potassium tetraborate from biomass was developed to construct 3D boron/nitrogen dual doped layered carbon (BNLC) in 3 M Zn(CF3SO3)(2) aqueous electrolyte, achieving a high voltage window of 2 V for supercapacitors. The BNLC showed high specific capacitance, good rate performance, and excellent cycle stability, with an energy density in neutral electrolyte that is 4.4 times higher than in alkaline electrolyte.
Article
Engineering, Chemical
Ayelet Kalfa, Tirupathi Rao Penki, Izaak Cohen, Netanel Shpigel, Eran Avraham, Doron Aurbach, Dawei Liang, Qinghao Wu, Haining Wang, Yan Xiang
Article
Chemistry, Physical
Fyodor Malchik, Netanel Shpigel, Mikhael D. Levi, Tirupathi Rao Penki, Bar Gavriel, Gil Bergman, Meital Turgeman, Doron Aurbach, Yury Gogotsi
Summary: MXene as an efficient binder for Na-ion anodes in aqueous batteries, providing electronically conductive paths, fast ion transfer, and capacitive contribution to stored charge. Integrated NTP/MXene electrodes show superior electrochemical performance compared to conventional PVDF-bonded electrodes, with high rate capability and cycling efficiency. A full cell with Na-intercalated MXene/NTP anode and FeFe(CN)(6) cathode demonstrates stable performance in NaClO4 electrolyte solution.
Article
Electrochemistry
Tirupathi Rao Penki, Sapir Gilady, Prasant Kumar Nayak, Hadar Sclar, Yuval Elias, Judith Grinblat, Michael Talianker, Boris Markovsky, Christoph Erk, Shalom Luski, Doron Aurbach
Summary: The study compared different synthesis routes and doping methods for NCM622 cathodes, finding that materials prepared by freeze-drying showed superior electrochemical performance. Ex situ Zr4+ doping improved capacity stabilization, while in situ doping helped maintain stable average voltage during prolonged cycling.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Energy & Fuels
Satyanarayana Maddukuri, Amey Nimkar, Munseok S. Chae, Tirupathi Rao Penki, Shalom Luski, Doron Aurbach
Summary: This study demonstrates that concentrated sodium perchlorate as an electrolyte solution can enhance the electrochemical performance and stability of aqueous salt batteries. The NMO/PI full cell in saturated NaClO4 electrolyte showed excellent capacity retention and coulombic efficiency, highlighting the potential of concentrated sodium perchlorate for improving performance in aqueous media.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Amey Nimkar, Netanel Shpigel, Fyodor Malchik, Shaul Bublil, Tianju Fan, Tirupathi Rao Penki, Merav Nadav Tsubery, Doron Aurbach
Summary: The stability of electrolyte solutions and the formation of effective passivation layers on both cathode and anode are crucial for the development of sustainable Na-ion batteries. Fluorine-based additives like FEC have shown promise in improving electrode performance, although their effect in NIBs is different from that in Li-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Gayathri Peta, Hadas Alon-Yehezkel, Shaul Bublil, Tirupathi Rao Penki, Ortal Breuer, Yuval Elias, Miryam Fayena-Greenstein, Doron Aurbach
Summary: This study compares the effects of different salts on the performance of all-solid-state sodium batteries. It is found that using NaClO4 leads to lower interfacial resistance but produces an unstable interface, while using NaPF6 forms a stable interface but produces detrimental by-product HF. However, the addition of TiO2 nanotubes can alleviate the negative effects of HF and improve the performance of solid-state sodium batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Energy & Fuels
Lin Chen, Brij Kishore, Tengfei Song, Marc Walker, Claire Dancer, Emma Kendrick
Summary: In this work, the use of low levels of N, N-diethyltrimethylsilylamine (DETMSA) as an electrolyte additive improves the stability and cycle life of a hard carbon vs. layered oxide sodium-ion battery. Approximately 80% of the capacity is retained after 500 cycles, which is almost double the performance of the standard electrolyte. The additive works by reducing the surface ageing constituents, leading to the observed improvement in cycle life.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Samuel Roberts, Lin Chen, Brij Kishore, Claire E. J. Dancer, Mark J. H. Simmons, Emma Kendrick
Summary: Sodium-ion batteries have the potential to be a sustainable alternative to lithium-ion batteries due to the abundance of sodium and cobalt-free cathodes. However, the rheological properties of the composite electrode slurries containing high nickel oxide show time dependency, resulting in the production of inhomogeneous coatings. This study investigated the surface changes of O3-oxide upon exposure to air and their impact on the rheology and stability of inks using electron microscopy and infrared spectroscopy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Correction
Chemistry, Multidisciplinary
Meital Turgeman, Vered Wineman-Fisher, Fyodor Malchik, Arka Saha, Gil Bergman, Bar Gavriel, Tirupathi Rao Penki, Amey Nimkar, Valeriia Baranauskaite, Hagit Aviv, Mikhael D. Levi, Malachi Noked, Dan Thomas Major, Netanel Shpigel, Doron Aurbach
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Meital Turgeman, Vered Wineman-Fisher, Fyodor Malchik, Arka Saha, Gil Bergman, Bar Gavriel, Tirupathi Rao Penki, Amey Nimkar, Valeriia Baranauskaite, Hagit Aviv, Mikhael D. Levi, Malachi Noked, Dan Thomas Major, Netanel Shpigel, Doron Aurbach
Summary: Extensive efforts are being made to develop safe and cost-effective electrolytes for large-scale energy storage. Water-based electrolytes may be a good option, but their narrow electrochemical stability window is a limitation. By adding cesium chloride to the electrolyte, stable operation of a battery consisting of a TiO2 anode and LiMn2O4 cathode is achieved.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Polymer Science
Praveen Kumar Balguri, Harris D. G. Samuel, Chilumala Indira, Tirupathi Rao Penki, Udayabhaskararao Thumu
Summary: The mechanical properties of epoxy composites have been greatly enhanced by the addition of MnO2 nanostructures, with significant improvements in tensile strength, percentage elongation, flexural strength, and impact strength.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Barak Shapira, Tirupathi Rao Penki, Izaak Cohen, Yuval Elias, Raphael Dalpke, Andre Beyer, Armin Golzhauser, Eran Avraham, Doron Aurbach
Summary: Wastewater reclamation has become a global concern due to population growth and industrialization, prompting the development of sustainable cost-effective technologies such as carbon nanomembranes (CNMs). A bifunctional membrane design combining membrane separation and advanced oxidation processes was explored for secondary wastewater treatment, demonstrating a new strategy for wastewater treatment using an integrated membrane.
Article
Chemistry, Multidisciplinary
Villa Krishna Harika, Tirupathi Rao Penki, Boddapati Loukya, Atanu Samanta, Gui-Liang Xu, Cheng-Jun Sun, Ilya Grinberg, Francis Leonard Deepak, Khalil Amine, Doron Aurbach, Aharon Gedanken
Summary: This study reports a simple sonochemical method to obtain solid mercury nanoparticles at ambient conditions for the first time, which exhibit unique properties compared to bulk liquid mercury and show potential applications in electroanalytical chemistry and electrocatalysis. Extensive characterization using various physicochemical techniques revealed the remarkable rhombohedral morphology and crystallinity of the solid Hg nanoparticles at room temperature.
Article
Materials Science, Composites
Praveen Kumar Balguri, D. G. Harris Samuel, Chilumala Indira, Govardhan Dussa, Tirupathi Rao Penki, Udayabhaskararao Thumu
COMPOSITES THEORY AND PRACTICE
(2020)
Review
Engineering, Environmental
Baljeet Singh, Surender Kumar, Brij Kishore, Tharangattu N. Narayanan
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2020)
