Article
Engineering, Environmental
Daixiang Wei, Wei Wang, Longjin Jiang, Zhidong Chang, Hira Anwar, Hualei Zhou, Bin Dong, Dekun Gao, Hao Lei, Zhiyi Chen, Wenjun Li
Summary: In this study, a strategy for the preferential extraction and regeneration of spent lithium-ion battery cathodes was proposed, leading to the successful recovery of a high percentage of lithium and cobalt. This method offers an effective solution for the recycling and utilization of spent lithium-ion batteries.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
Seong-Nam Lee, Deok-Hye Park, Ji-Hwan Kim, Sang-Hyun Moon, Jae-Sung Jang, Sung-Beom Kim, Jae-Hoon Shin, Yu-Yeon Park, Kyung-Won Park
Summary: Fe-doped truncated octahedral LiMn2O4 (LMO) cathodes were synthesized in this study to improve the stability of LMO in Li-ion batteries (LIBs). The results showed that the Fe-doped LMO cathode with an appropriate amount of dopant exhibited the best LIB performance, with the highest Li+ ion diffusivity.
Article
Chemistry, Multidisciplinary
Chao Sun, Bing Zhao, Jing Mao, Ke-Hua Dai, Zhen-yu Wang, Lin-bo Tang, He-zhang Chen, Xia-hui Zhang, Jun-chao Zheng
Summary: LiCoO2 plays a crucial role in energy storage devices. However, increasing the charging cut-off voltage to improve the volumetric energy density of LiCoO2 causes increased interface resistance and damage to the cathode. A solution to this problem is the use of MXenes as an interlayer to inhibit the interfacial catalytic activity of LiCoO2, effectively mitigating the decomposition of the electrolyte and LiPF6. This study provides a new and universal strategy for stabilizing the cathode interface, supporting the development of high energy density lithium-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Electrochemistry
Pan He, Yuanxue Zhang, Meng Li, Yuehua Wen, Yue Wang, Jingyi Qiu, Hai Ming
Summary: The functionalization of nano SiO2 was achieved by using dopamine self polymerization coating, and it was uniformly coated onto LiCoO2 cathode through rotary steaming. The functional nanocoating showed a homogeneous distribution on the surface of LiCoO2 particles. The interaction between nano SiO2 coating and LiCoO2 particles enhanced the function of solid superacid formed by fumed SiO2, leading to improved interface stability and ionic conductivity of LiCoO2 cathodes at high voltage. The modified LiCoO2 cathode with functionalized nano-SiO2 exhibited a reversible capacity of around 190 mAh g(-1) with good capacity retention after cycles at room temperature and elevated temperature.
ELECTROCHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Evilus Rada, Enio Lima, Fabricio Ruiz, Sergio Moreno
Summary: The synthesis of small hollow porous LiMn2O4 nanostructures has been shown to improve contact area with electrolyte, leading to enhanced discharge capacity retention and Li+ diffusion coefficient compared to bulk LiMn2O4.
Article
Chemistry, Multidisciplinary
Honglei Liu, Fangli Yang, Junming Guo, Mingwu Xiang, Hongli Bai, Rui Wang, Changwei Su
Summary: Amorphous Al2O3-coated spinel LiMn2O4 cathode materials were prepared via a simple combustion method using glucose as a fuel at a low temperature. The Al2O3-coating improved the cycling and high current rate performance of the LiMn2O4, resulting in high initial discharge capacity and good cycling stability.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Hongxiang Ji, Liubin Ben, Shan Wang, Zhongzhu Liu, Robson Monteiro, Rogerio Ribas, Hailong Yu, Peng Gao, Yongming Zhu, Xuejie Huang
Summary: The research demonstrates that by precisely controlling the coating concentration and temperature, Nb2O5 can effectively bond to the surface of LiMn2O4 spinel cathode material, significantly improving the electrochemical performance. However, at high coating concentrations, Nb5+ ions diffuse into the cathode structure, leading to a decrease in cycling performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jonas Hedman, Fredrik Bjorefors
Summary: This study demonstrated the use of fiber optic evanescent wave sensors for monitoring composite cathodes in lithium-ion batteries, showing improved cycling performance and electrochemical properties. The optical response correlated well with capacity, and the response at different rates was not influenced by salt concentration in the electrolyte.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kai Huang, Jinxia Zhou, Huili Yang, Tianzheng Xie, Tu Lan, Suichang Ong, Heng Jiang, Yibo Zeng, Hang Guo, Ying Zhang
Summary: This study finds that the cycling performance of NCM622 cathode materials can be improved by one-step coating with TiO2-LiF. The TiO2-LiF coated NCM622 demonstrates a higher capacity retention compared to pure NCM622 after 200 cycles, suggesting its significance for the application in lithium-ion batteries.
Article
Chemistry, Multidisciplinary
Buddha Deka Boruah, Bo Wen, Michael De Volder
Summary: A novel photorechargeable lithium-ion battery has been proposed, which can be charged using light. This battery utilizes photocathodes made from vanadium pentoxide nanofibers mixed with P3HT and rGO additives, leading to significant improvements in capacity and conversion efficiency.
Article
Nanoscience & Nanotechnology
Elena Salagre, Pilar Segovia, Miguel Aïngel Gonzalez-Barrio, Matteo Jugovac, Paolo Moras, Igor Pis, Federica Bondino, Justin Pearson, Richmond Shiwei Wang, Ichiro Takeuchi, Elliot J. Fuller, Alec A. Talin, Arantzazu Mascaraque, Enrique G. Michel
Summary: We have developed a novel delithiation process for thin film lithium cobalt oxide cathodes. By using ion sputtering and annealing cycles, we can achieve delithiation without chemical byproducts and electrolyte interaction. This method allows for the identification of the effects of lithium extraction and provides detailed information on the role of oxygen and cobalt atoms in charge compensation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ryan Brow, Anthony Donakowski, Alex Mesnier, Drew J. Pereira, K. Xerxes Steirer, Shriram Santhanagopalan, Arumugam Manthiram
Summary: Nickel-rich cathode materials, despite being a promising choice for electric vehicles, face challenges related to long-term cycle life retention and air stability. This study investigates the use of surface treatments, specifically the coating of LiNi0.9Mn0.05Al0.05O2 cathode materials with lithium phosphate, to improve their performance. The results show that low concentration phosphoric acid coating leads to delayed voltage decay and enhanced discharge capacity during high-voltage cycling.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Badre Larhrib, Georgios Nikiforidis, Meriem Anouti
Summary: A novel non-flammable electrolyte was formulated by adding an ionic liquid to a standard electrolyte, which improved battery safety and performance.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Pallavi Thakur, Khorsed Alam, Prasenjit Sen, Tharangattu N. Narayanan
Summary: By incorporating -OH functionalities into the cathode through polysaccharide addition, the discharge capacity and cyclability of Li-O2 batteries are enhanced. This rational design route provides high capacities for the emergent Li-O2 batteries.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Hongyu Zhang, Yaling Rong, Yali Cao
Summary: This study successfully synthesized rGO/Cu-V2O5 composites as cathode materials for lithium-ion batteries, with high active Cu-V2O5 content and low fraction of rGO. The application of low-fraction rGO enhances the electronic conductivity of the composites, facilitating efficient transfer of electrons and ions for improved cycling stability in batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
T. F. Grigoreva, D. Dudina, S. A. Petrova, S. A. Kovaleva, I. S. Batraev, S. V. Vosmerikov, E. T. Devyatkina, N. Z. Lyakhov
Summary: X-ray analysis and scanning electron microscopy were utilized to study the microstructure and properties of mechanochemically synthesized Al/Cu9Al4 composites and their sintered materials. The research revealed that a composite structure with uniform distribution of particles can be formed even after a short period of mechanical activation. Additionally, the hardness of sintered composites is approximately twice that of pure aluminum without reinforcing additives.
PHYSICS OF METALS AND METALLOGRAPHY
(2021)
Article
Metallurgy & Metallurgical Engineering
T. F. Grigoreva, S. A. Petrova, S. A. Kovaleva, D. Dudina, I. S. Batraev, T. Yu Kiseleva, S. Zholudev, S. V. Vosmerikov, E. T. Devyatkina, T. A. Udalova, S. N. Polyakov, N. Z. Lyakhov
Summary: The mechanochemically synthesized Cu-20 wt % Al alloys and solid solution of aluminum in copper show unique microstructural characteristics, with small crystallites and low microstrains. The Cu(Al) solid solution produced by spark plasma sintering exhibits low residual porosity and high Vickers hardness.
PHYSICS OF METALS AND METALLOGRAPHY
(2021)
Article
Instruments & Instrumentation
Aleksandra V. Selivanova, Egor E. Aydakov, Andrey A. Saraev, Vasily V. Kaichev
Summary: The adsorption behavior of methanol and ethanol on the Pt (111) surface was studied using PM-IRRAS at different temperatures. Methanol adsorbs as amorphous solid at low temperature and crystallizes at higher temperatures. Ethanol, on the other hand, desorbs completely regardless of the warming temperature.
APPLIED SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Serguei Tikhov, Tatiana Minyukova, Konstantin Valeev, Svetlana Cherepanova, Andrey Saraev, Vasily Kaichev, Egor Aidakov, Oleg Smorygo, Anastasia Vazhnova, Vitali Mikutski
Summary: Mechanochemical alloying and subsequent hydro-thermal treatment and calcination were used to synthesize ceramometal catalysts with Cu + Al and Cu + Fe + Al powders. CuAl + Cufoam and CuFeAl + Cufoam ceramometal catalysts reinforced with Cu foam were also synthesized. CuAl ceramometals showed higher activity in the water-gas shift reaction due to a higher concentration of active sites on their surface. The activity of ceramometal granules was enhanced by the integration with foam Cu, resulting in a higher thermal conductivity and improved catalytic properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Svetlana S. Laletina, Mikhail Mamatkulov, Aleksey M. Shor, Elena A. Shor, Vasily V. Kaichev, Ilya Yudanov
Summary: Methanol dehydrogenation on Pt nanoparticles was studied to investigate the size and structure effects. The results showed that the morphology of nanoparticles affects the adsorption energy of COHx intermediates, and the size of nanoparticles influences the activity of adsorption sites.
Article
Materials Science, Multidisciplinary
Dina Dudina, Tatyana F. Grigoreva, Vyacheslav Kvashnin, Evgeniya T. Devyatkina, Sergey V. Vosmerikov, Arina Ukhina, Aleksey N. Novoselov, Mikhail A. Legan, Maksim A. Esikov, Yaroslav L. Lukyanov, Alexander G. Anisimov, Svetlana A. Kovaleva, Nikolay Z. Lyakhov
Summary: A fabrication route of Cu-10 wt% Al bronze has been proposed using high-energy mechanical milling and spark plasma sintering (SPS). The sintered alloy at 800 degrees C exhibits favorable properties in terms of hardness, strength, deformation capability, and electrical conductivity.
Article
Chemistry, Physical
Elena A. Lashina, Zakhar S. Vinokurov, Andrey A. Saraev, Vasily V. Kaichev
Summary: An experimental study reveals that regular temporal oscillations in the reaction rate can occur during the catalytic oxidation of methane over Pd foil under atmospheric pressure and methane-rich conditions. The oscillations originate from the spontaneous oxidation and reduction of palladium, accompanied by oscillations in catalyst temperature and gas phase species concentrations.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Anna Yu Kurenkova, Anastasiya Yu Yakovleva, Andrey A. Saraev, Evgeny Yu Gerasimov, Ekaterina A. Kozlova, Vasily V. Kaichev
Summary: This study proposes titania-based photocatalysts modified with copper compounds for hydrogen evolution and tests their photocatalytic activity. The synthesized photocatalysts are characterized using various methods, and the results show that the heat-treated and copper oxide deposited photocatalysts exhibit high activity under both UV and visible light irradiation.
Article
Chemistry, Multidisciplinary
Daria V. Chernysheva, Ekaterina A. Sidash, Maksim S. Konstantinov, Victor A. Klushin, Denis V. Tokarev, Veronica E. Andreeva, Evgeny A. Kolesnikov, Vasily V. Kaichev, Nina V. Smirnova, Valentine P. Ananikov
Summary: Sustainable human development requires reducing the cost of energy storage. The conversion of waste materials into high-value-added carbon materials is well developed for solid wastes, but more challenging for liquid wastes. In this study, a new approach was developed to convert liquid waste into solid materials with nitrogen incorporation. The obtained carbon materials for energy storage exhibited superior characteristics under simple process conditions.
Article
Chemistry, Physical
Aleksandra Selivanova, Andrey A. Saraev, Vasily V. Kaichev
Summary: The oxidation of ethanol on a Pt(1 1 1) single crystal surface was investigated using PM-IRRAS at near-ambient pressures. The study monitored reaction intermediates and the main reaction products in the gas phase, as well as adsorbed species on the platinum surface, during stepwise heating from room temperature to 600 K. The results showed that ethanol oxidation starts at 330 K, with acetaldehyde, acetic acid, CO2, and water detected as gas-phase products. Surface intermediates such as adsorbed acetaldehyde and ethoxy-groups were observed at low temperatures, while carbonates were the only surface intermediates at higher temperatures.
APPLIED SURFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Daria Chernysheva, Maksim Konstantinov, Ekaterina Sidash, Tatiana Baranova, Victor Klushin, Denis Tokarev, Veronica Andreeva, Evgeny Kolesnikov, Vasily Kaichev, Mikhail Gorshenkov, Nina Smirnova
Summary: Nowadays, commercial electric double-layer supercapacitors mainly use porous activated carbons obtained from renewable plant biomass. In this study, carbon fibers were prepared using fungi (Fomes fomentarius) as a bio-template. The carbon materials showed good electrochemical properties and excellent stability after 25,000 charge/discharge cycles, making them a prospective candidate for electrode material in symmetrical supercapacitors.
Article
Electrochemistry
Nina V. Kosova, Dmitry Z. Tsydypylov
Summary: TiNb2O7 anode material with Wadsley-Roth crystallographic shear structure was prepared by solid-state synthesis and showed improved electrochemical performance after ball milling, possibly due to the formation of a conductive carbon matrix and uniform distribution of submicron particles.
Article
Engineering, Chemical
Anastasia Tsarenko, Mikhail Gorshenkov, Aleksey Yatsenko, Denis Zhigunov, Vera Butova, Vasily Kaichev, Anna Ulyankina
Summary: This article presents a rapid, convenient, and environmentally friendly method for electrochemical oxidation of metallic tungsten using pulse alternating current in an aqueous solution, producing WO3 nanopowders. It demonstrates that WO3 synthesized in oxalic acid exhibits excellent activity in the photoelectrochemical reforming of organic substances.
Article
Chemistry, Inorganic & Nuclear
Maria Alekseeva (Bykova), Yuliya K. Gulyaeva, Olga A. Bulavchenko, Andrey A. Saraev, Anna M. Kremneva, Sergey A. Stepanenko, Anton P. Koskin, Vasily V. Kaichev, Vadim A. Yakovlev
Summary: The addition of zinc hinders the reducibility of nickel and weakens its interaction with the silica matrix, leading to the formation of solid oxide nickel-zinc solutions. Zn-modified catalysts exhibit significantly better catalytic properties in the dehydrogenation of methylcyclohexane compared to Ni-Cu counterparts. The selectivity towards toluene formation increases noticeably with a decrease in the Ni : Zn mass ratio, attributed to the promoting geometric and electronic effects from the formation of bimetallic Ni-Zn solid solutions.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
T. Yu. Kiseleva, S. A. Kovaleva, T. F. Grigoreva, A. B. Tsepelev, S. I. Zholudev, S. V. Vosmerikov, E. T. Devyatkina, I. P. Ivanenko, O. V. Kostenko, E. V. Yakuta, A. S. Ilyushin, N. Z. Lyakhov
Summary: Differential scanning calorimetry was used to study the effects of electron irradiation on the structural state of composite materials made from precursors of ultrahigh molecular weight polyethylene and boron carbide B4C. The study shows that the composite material is resistant to electron irradiation up to a fluence of 8 x 10(14) cm(-2).
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
