4.6 Article

Hierarchically porous Li1.2Mn0.6Ni0.2O2 as a high capacity and high rate capability positive electrode material

期刊

NEW JOURNAL OF CHEMISTRY
卷 40, 期 2, 页码 1312-1322

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nj02423d

关键词

-

资金

  1. Department of Science and Technology (DST), Government of India
  2. University Grants Commission (UGC), Government of India

向作者/读者索取更多资源

Layered composite samples of lithium-rich manganese oxide (Li1.2Mn0.6Ni0.2O2) are prepared by a reverse microemutsion route employing a soft polymer template and studied as a positive electrode material. The product samples possess dual porosity with distribution of pores at 3.5 and 60 nm. Pore volume and surface area decrease on increasing the temperature of preparation. Nevertheless, the electrochemical activity of the composite increases with an increase in temperature. The discharge capacity value of the samples prepared at 800 and 900 degrees C is about 240 mA h g(-1) at a specific current of 25 mA g(-1) with a good cycling stability. The composite sample heated at 900 degrees C possesses a high rate capability with a discharge capacity of 100 mA h g(-1) at a specific current of 500 mA g(-1). The high rate capability is attributed to porous nature of the composite sample.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Chemistry, Physical

Organic Solvent Based Synthesis of Gold Nanoparticle-Semiconducting 2H-MoS2 Hybrid Nanosheets

Abhijit Ganguly, Olga Trovato, Shanmughasundaram Duraisamy, John Benson, Yisong Han, Cristina Satriano, Pagona Papakonstantinou

JOURNAL OF PHYSICAL CHEMISTRY C (2019)

Article Engineering, Chemical

Thermally reduced graphene oxide as an electrode for CDI processes: A compromise between performance and scalability?

Ayelet Kalfa, Tirupathi Rao Penki, Izaak Cohen, Netanel Shpigel, Eran Avraham, Doron Aurbach, Dawei Liang, Qinghao Wu, Haining Wang, Yan Xiang

DESALINATION (2020)

Article Chemistry, Physical

MXene conductive binder for improving performance of sodium-ion anodes in water-in-salt electrolyte

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.

NANO ENERGY (2021)

Article Electrochemistry

The effect of synthesis and zirconium doping on the performance of nickel-rich NCM622 cathode materials for Li-ion batteries

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

Na0.44MnO2/Polyimide Aqueous Na-ion Batteries for Large Energy Storage Applications

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

Unraveling the Role of Fluorinated Alkyl Carbonate Additives in Improving Cathode Performance in Sodium-Ion Batteries

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

Influence of Salt Anions on the Reactivity of Polymer Electrolytes in All-Solid-State Sodium Batteries

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)

Correction Chemistry, Multidisciplinary

A cost-effective water-in-salt electrolyte enables highly stable operation of a 2.15-V aqueous lithium-ion battery (vol 3, 100688, 2022)

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

A cost-effective water-in-salt electrolyte enables highly stable operation of a 2.15-V aqueous lithium-ion battery

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

Manganese dioxide nanostructures reinforced epoxy nanocomposites: a study of mechanical properties

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

Combined nanofiltration and advanced oxidation processes with bifunctional carbon nanomembranes

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.

RSC ADVANCES (2021)

Article Nanoscience & Nanotechnology

One-Step Hydrothermal Synthesis of Phase-Engineered MoS2/MoO3 Electrocatalysts for Hydrogen Evolution Reaction

Shanmughasundaram Duraisamy, Abhijit Ganguly, Preetam Kumar Sharma, John Benson, James Davis, Pagona Papakonstantinou

Summary: This work demonstrates a controllable one-step hydrothermal method for the rational design and synthesis of a 3D network of MoS2/MoO3 nanosheets with high 1T-MoS2 metallic yield, simultaneous incorporation of MoO3/MoS2 heterointerfaces, sulfur vacancies, and tuned electrical conductivity. These structures are highly beneficial for clean energy conversion applications and have the potential to be expanded to other two-dimensional TMD materials.

ACS APPLIED NANO MATERIALS (2021)

Article Chemistry, Multidisciplinary

Sustainable existence of solid mercury (Hg) nanoparticles at room temperature and their applications

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.

CHEMICAL SCIENCE (2021)

Article Materials Science, Composites

TENSILE, FLEXURAL AND IMPACT PROPERTIES OF ULTRASMALL TiO2 NANOTUBES REINFORCED EPOXY COMPOSITES

Praveen Kumar Balguri, D. G. Harris Samuel, Chilumala Indira, Govardhan Dussa, Tirupathi Rao Penki, Udayabhaskararao Thumu

COMPOSITES THEORY AND PRACTICE (2020)

Article Chemistry, Physical

Linking structure to performance of Li1.2Mn0.54Ni0.13Co0.13O2 (Li and Mn rich NMC) cathode materials synthesized by different methods

N. Leifer, T. Penki, R. Nanda, J. Grinblat, S. Luski, D. Aurbach, G. Goobes

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2020)

Article Chemistry, Multidisciplinary

Two biomass material-derived self-doped (N/O) porous carbons from waste coriander and lilac with high specific surface areas and high capacitance for supercapacitors

Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang

Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Nitrate anions embedded in rigid and cationic 3D energetic MOFs constructed by the chelating ligand towards insensitive energetic materials

Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu

Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Mangifera indica stone-assisted layered double hydroxide biocomposites: efficient contenders for reactive dye adsorption from aqueous sources

Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti

Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Unlocking the biosynthetic regulation role of polyketide alkaloid lydicamycins

Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin

Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

3D-printing of attapulgite monoliths with superior low-temperature selective catalytic reduction activity: the influence of thermal treatment

Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu

Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Photo-electro concerted catalysis of a highly active Pt/CoP/C nanocomposite for the hydrogen evolution reaction

Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin

Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Synthesis of a water-based TEOS-PDMS sol-gel coating for hydrophobic cotton and polyester fabrics

Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli

Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Non-aqueous electrochemistry of rhodamine B acylhydrazone

Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov

Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Exploring the magnetic, electric and magnetodielectric properties of (1-x)Ba0.9Ni0.1Ti0.9Mn0.1O3-xCo0.9Mn0.1Fe1.9V0.1O4 multiferroic composites

Showket Ahmad Bhat, Mohd Ikram

Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

On the mechanochemical synthesis of C-scorpionates with an oxime moiety and their application in the copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction

Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro

Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Phosphate ions improve the performance of BiFeO3 piezoelectric photoelectrochemical water splitting

Zhihua Liu, Jinzhe Li, Jianguo Zhou

Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Synthesis of p-aminophenol by transfer hydrogenation of nitrobenzene with formic acid as a hydrogen source

Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang

Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

A CuMoO4 nanocatalyst for Csp2-O cross-couplings; easy access to nitrofen derivatives

Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout

Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

A mechanistic study on coupling of CO2 and epoxide mediated by guanidine/TBAI catalysts

Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su

Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.

NEW JOURNAL OF CHEMISTRY (2024)

Article Chemistry, Multidisciplinary

Localized surface plasmon resonance assisted photoredox catalysis using newly fabricated copper-nanorods: a decarboxylative approach towards carbon-hydrogen bond formation under visible light

Saikat Khamarui, Sirshendu Ghosh

Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.

NEW JOURNAL OF CHEMISTRY (2024)