Review
Electrochemistry
Guiomar Hernandez, Ronnie Mogensen, Reza Younesi, Jonas Mindemark
Summary: This review outlines the importance of fluorine in battery electrolytes, the problems it causes, and strategies to eliminate it. The examples provided demonstrate the possibility of creating fully fluorine-free electrolytes with similar performance, but improvements are still needed.
BATTERIES & SUPERCAPS
(2022)
Article
Multidisciplinary Sciences
Shobhan Dhir, Ben Jagger, Alen Maguire, Mauro Pasta
Summary: Non-aqueous potassium-ion batteries (KIBs) are a promising alternative to lithium-ion batteries due to the low cost and availability of potassium. This study characterizes the ionic transport and thermodynamic properties of a non-aqueous K-ion electrolyte solution and compares it to the Li-ion counterpart. The results show that KIBs have higher salt diffusion coefficients and cation transference numbers, indicating potential advantages in rate capability.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Mennatalla Elmanzalawy, Elena Sanchez-Ahijon, Ozden Kisacik, Javier Carretero-Gonzalez, Elizabeth Castillo-Martinez
Summary: A solvent-free synthesis method was used to prepare a series of potential polymer electrolytes for K-ion batteries. These electrolytes exhibited good ionic conductivity and chemical stability, allowing for reversible (de)intercalation of K+ ions at lower temperatures.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dan Zhang, Le Li, Weizhuo Zhang, Minghui Cao, Hengwei Qiu, Xiaohui Ji
Summary: Fast-charging is crucial for the successful expansion of electric vehicles. This article provides an overview of the research progress, challenges, and design strategies of the new fast-charging solution system for lithium-ion batteries, focusing on the influence of electrolyte composition on fast-charging performance. It also proposes new insights, directions, and potential solutions for future research on next-generation fast-charging LIB chemistry.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Tianzhao Li, Xuelei Pan, Zhongzhuo Yang, Fang Liu, Kesong Yu, Lin Xu, Liqiang Mai
Summary: In this study, a patternable lithium-ion polymer electrolyte was successfully prepared by modifying SU-8 material. The modified sample exhibited higher ionic conductivity, good thermal stability, and mechanical properties, as well as a larger electrochemical window. Through the fabrication and testing of half-cell and microdevices, the feasibility of integrating batteries on microchips was verified.
Review
Electrochemistry
Jiale Xing, Stoyan Bliznakov, Leonard Bonville, Miodrag Oljaca, Radenka Maric
Summary: This review summarizes the recent progress in the development of nonaqueous electrolytes, binders, and separators for lithium-ion batteries and discusses their impact on battery performance. The importance of the non-electroconductive components in influencing the capacity, safety, charging time, and cycle life of batteries is emphasized.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Ji Ma, Yuankun Li, Xiaojie Wei, Chunting Liu
Summary: Reduction roasting strategy was employed to transform hematite into powerful anode materials to store Li+, Na+, and K+ ions, constructing a porous structure to enhance ion accessibility. The newly-designed anodes were tested for storage capacity, cycling stability, and rate performances, while cyclic voltammetry curves and electrochemical impedance spectra were measured to unveil ion-storage mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Christina Toigo, Milan Kracalik, Elke Bradt, Karl-Heinz Pettinger, Catia Arbizzani
Summary: The rheological properties of electrode slurries have been studied for various combinations of active materials and binders, with a shift towards water-based electrode manufacturing becoming more important. While different solvents offer benefits in terms of sustainability and safety, they also present challenges such as slurry stability issues. Li4Ti5O12 (LTO) active material shows good long-term stability and can be processed in aqueous solutions, but combining it with sodium alginate (SA) as a binder presents challenges in slurry stability. In this study, a comprehensive rheological analysis was conducted on anode slurries consisting of LTO and SA, with the use of surfactants to improve stability compared to surfactant-free slurries.
Review
Electrochemistry
Yao Liu, Wei Li, Yongyao Xia
Summary: While carbon, oxide, and silicon-based materials have limitations in current LIB applications, polyanionic compounds have gained attention for their ability to stabilize structures, adjust redox couples, and provide migration channels for guest ions, leading to electrode materials with long-term cycling, high energy density, and outstanding rate capability.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Wenxiu Hou, Chao Yan, Panrun Shao, Kun Dai, Jun Yang
Summary: This study investigates the application of Prussian blue analogues (PBAs) as electrode materials for aqueous ammonium ion batteries (AAIBs). A PANI/Na0.73Ni[Fe(CN)(6)](0.88) hybrid (PNFF) is synthesized using a covalent bond assisted engineering with in situ polyaniline (PANI) polymerization, combining the high conductivity of PANI and the stability of PBAs. It is found that the PANI content affects the electrochemical performance of PNFF, and an optimized PANI content results in enhanced reversible capacity and cycling stability. The ammonium storage mechanism of PNFF is investigated using in situ Raman and ex situ XPS/FTIR analysis, and a durable aqueous NH4+ full cell is assembled using a polyimide@MXene anode.
Article
Energy & Fuels
Xu Dong, Xu Liu, Jin Han, Zhen Chen, Huang Zhang, Stefano Passerini, Dominic Bresser
Summary: A two-step synthesis of sodium (2,3,5,6-tetrafluorophenoxy) diethane sulfonate (Na-TFP) is reported, and its application in sodium-ion batteries is studied. By modifying the electrolyte, higher ionic conductivity and electrochemical stability can be achieved.
Article
Engineering, Environmental
Guilong Liu, Lifang Xu, Yuqing Li, Donglei Guo, Naiteng Wu, Changzhou Yuan, Aimiao Qin, Ang Cao, Xianming Liu
Summary: The fabricated anatase-rutile heterostructure TiO2 electrode with abundant oxygen vacancies exhibited enhanced electronic/ionic transport and improved pseudo-capacitive behaviors. The theoretical calculation confirmed that the heterostructure favored the connection between TiO2 and carbon layers, leading to improved electronic conductivity and lower migration energy barriers for Li+ and Na+.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Huajun Tian, Guangxia Feng, Qi Wang, Zhao Li, Wei Zhang, Marcos Lucero, Zhenxing Feng, Zi-Le Wang, Yuning Zhang, Cheng Zhen, Meng Gu, Xiaonan Shan, Yang Yang
Summary: Aqueous zinc-ion batteries have received much attention due to their high safety, environmental benignity, and low cost. However, the interface instability issues caused by detrimental side reactions impede their practical applications. In this study, an interface material consisting of a zinc-copper alloy with engineered surfaces is designed to regulate the zinc plating/stripping processes, leading to high-performance aqueous zinc-ion batteries. This work enhances the fundamental understanding of dual-cation intercalation chemistry in aqueous electrochemical systems and provides guidance for exploring high-performance aqueous zinc-ion batteries and beyond.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Shao-Fei Wang, Bao-Tian Wang, Tao Bo, Jun-Rong Zhang, Fang-Wei Wang
Summary: The Ti2B monolayer, based on first-principles calculations, shows high capacity and low diffusion barriers compared with other materials, indicating high structural stability and steady metallic character. The magnetic effects in the ground state of ferromagnetism impact thermal stability, charge transfer, ion diffusion, operating voltage and storage capacity.
APPLIED SURFACE SCIENCE
(2021)
Review
Energy & Fuels
Susmi Anna Thomas, Mohan Reddy Pallavolu, Mohammad Ehtisham Khan, Jayesh Cherusseri
Summary: Two-dimensional graphitic carbon nitride (g-C3N4) is similar to graphene and has attracted great interest in electrochemical energy storage. It has unique features such as nitrogen-rich environment, abundant resources, good electronic conductivity, excellent physicochemical stability, fascinating electrochemical stability, and environmental friendliness, making it a promising electrode candidate for high-performance rechargeable batteries. The 2D g-C3N4 electrodes exhibit excellent electrochemical performance in terms of high capacity, high energy density, and long cycle life, which are beneficial for metal-ion batteries. In addition, the large surface area, porous architecture, and thin-layer structural features of these materials are favorable for high performance in metal air batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Hiroaki Kobayashi, Yu Fukumi, Hiroto Watanabe, Reona Iimura, Naomi Nishimura, Toshihiko Mandai, Yoichi Tominaga, Masanobu Nakayama, Tetsu Ichitsubo, Itaru Honma, Hiroaki Imai
Summary: Ultraporous and ultrasmall cubic spinel MgMn2O4 (MMO) is fabricated through a freeze-dry assisted room-temperature alcohol reduction process. Heat-treatment removes surface hydroxy groups and activates MMO, increasing its discharge capacity from 160 mAh g(-1) to 270 mAh g(-1), close to the theoretical value. The ultraporous, ultrasmall particles stabilize the metastable cubic spinel phase, promoting Mg2+ insertion/deintercalation and reversible transformation between cubic spinel and cubic rock-salt phases.
Article
Chemistry, Multidisciplinary
Sourav Bhowmick, Mukhtiar Ahmed, Andrei Filippov, Laura C. Loaiza, Faiz Ullah Shah, Patrik Johansson
Summary: In this study, six phosphate-anion-based alkali metal salts (Li/Na/K) that are liquids at room temperature were reported. These salts exhibit high anodic stabilities and deliver battery performance at elevated temperatures. Solvent-free electrolytes based on these salts could pave the way for new Li/Na/K-battery designs.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Yasushi Idemoto, Mina Takamatsu, Chiaki Ishibashi, Naoya Ishida, Toshihiko Mandai, Naoto Kitamura
Summary: Mg1.33V1.67-xMnxO4 (x= 0.1 to 0.4) was synthesized for the first time using a solid-phase method under high vacuum conditions. The crystal structures were confirmed to be spinel with Fd3(-)m space group through powder X-ray diffraction analysis, and the chemical compositions were found to be uniform through STEM observation and elemental analysis. Charge and discharge cycle tests revealed that the discharge capacity depended on the cycle number, Mn composition, and working temperature. Among them, Mg1.33V1.57Mn0.1O4 (x=0.1) exhibited the highest discharge capacity of 256 mAh g(-1) at the 13th cycle, while the initial capacity was only 73 mAh g(-1) at 90 degrees C. The local structure was analyzed using EXAFS spectra, which showed that Mg1.33V1.57Mn0.1O4 had the smallest lattice distortion due to Mn at 16d sites, and XAFS spectra indicated a significant change in the oxidation state of V during the charge/discharge cycles. The particularly stable crystal structure and large contribution of charge compensation by V may contribute to the excellent charge-discharge performance of Mg1.33V1.57Mn0.1O4.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Laura C. Loaiza, Niklas Lindahl, Patrik Johansson
Summary: Aluminium batteries (AlBs) have great potential as a feasible energy storage technology, thanks to their high capacity, low cost, abundance, and recyclability. However, the presence of an insulating oxide layer on the Al metal anode necessitates the use of special non-aqueous acidic electrolytes to enable reversible plating and stripping of Al. The formation of a porous and complex passivation layer under certain conditions poses challenges for stable interfaces and the successful implementation of AlBs.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Toshihiko Mandai, Hiroko Naya, Hyuma Masu
Summary: The electrolyte material for high-energy-density rechargeable batteries should have sufficient stability against metallic negative electrodes. Weakly coordinating anion (WCA)-based electrolytes have shown excellent performance due to their strong interaction with metal cations. In this study, the valency of paired cation species was found to affect the transport properties and electrochemical characteristics of the electrolytes, with divalent electrolytes exhibiting higher conductivity than monovalent electrolytes. The combination of magnesium cations and [B(HFIP)4]- anion showed outstanding performance in ethereal solutions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Toshihiko Mandai, Masaru Yao, Keitaro Sodeyama, Akiko Kagatsume, Yoshitaka Tateyama, Hiroaki Imai
Summary: Rechargeable magnesium batteries (RMBs) have the potential to be a sustainable energy storage technology due to the abundance of magnesium metal and its excellent energy storage properties. However, to compete with lithium-ion batteries, their energy density needs to be improved. This study explores the use of different organic solvent-based electrolytes to design anodically stable ether-based electrolyte solutions for RMB applications. Anodically stable electrolytes were successfully developed by combining suitable fluorinated glyme-based solvents with appropriate conducting salts, achieving a remarkable anodic limit and suppressing corrosion of current collectors. However, these electrolytes were not suitable for RMBs with high-voltage oxide-based cathodes due to catalytic decomposition during charging.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Naomi Nishimura, Kazumasa Masaki, Wei Tan, Reona Iimura, Hiroaki Kobayashi, Kei Nishikawa, Toshihiko Mandai, Hidetoshi Somekawa, Yoichi Tominaga
Summary: To improve the cycle performance of Mg metal batteries, a polymer coating (PSTFSI-Mg) was applied on the surface of spinel-type MgMn2O4 cathode. The polymer coating promoted electron transfer between particles, as confirmed by transmission electron microscopy. Density functional theory calculations revealed that the polymer reduced the energy gap between the valence band maximum of MgMn2O4 and the highest occupied molecular orbital level of the electrolyte, thus suppressing electrolyte degradation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Electrochemistry
Fabian Aren, Rasmus Andersson, Alejandro A. Franco, Patrik Johansson
Summary: Increasing the lithium salt concentration from 1 M to 3-5 M can create highly concentrated electrolytes (HCEs), which are suggested to be a pathway towards safer and more stable lithium batteries. The unique solvation structure of HCEs with insufficient solvent to fully solvate Li+ ions is believed to contribute to their higher stability and lower volatility. However, there is still much to be understood about HCEs.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Sanna Wickerts, Rickard Arvidsson, Anders Nordelof, Magdalena Svanstrom, Patrik Johansson
Summary: Lithium-sulfur (Li-S) batteries have potential as a next-generation battery technology due to their high energy densities and lack of rare metals. This study uses life cycle assessment (LCA) to evaluate the environmental and resource impacts of large-scale Li-S battery production. The results highlight the importance of specific energy density and electrolyte salt type for reducing environmental impacts, as well as the significance of electricity source and cycle life for cradle-to-grave impacts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Electrochemistry
Mikael Paronen, Muhammad E. Abdelhamid, Patrik Johansson
Summary: Direct methanol fuel cells (DMFCs) have not met their full potential due to the solvation of electrons generated at the nano-structured catalyst loaded electrodes into the surrounding electrolyte, resulting in low power densities and high fuel losses. Reconsidering material and catalyst/electrode design can enable the realization of the true potential of DMFCs.
Article
Chemistry, Physical
Marie-Aline Martin-Drumel, Jean-Thibaut Spaniol, Helen Holzel, Marcelino Agundez, Jose Cernicharo, Kasper Moth-Poulsen, Ugo Jacovella
Summary: The NBD molecule has remarkable photoswitching properties and high photostability, which make it promising for solar-thermal energy storage and a potentially important component in the interstellar medium. However, the searches for NBD, CN-NBD, and DCN-NBD in TMC-1 were unsuccessful, indicating that NBD is at least four times less abundant than indene.
FARADAY DISCUSSIONS
(2023)
Article
Materials Science, Biomaterials
Pankaj Bharmoria, Saik Ann Ooi, Andrea Cellini, Daniel Tietze, Michal Maj, Kasper Moth-Poulsen, Alesia A. Tietze
Summary: By cohabitating IgG1 with gelatin in the solid-state at room temperature, long-term stable storage is achieved. The IgG1 remained functionally active for a record 14 months, with no degradation in the gelatin matrix. This method has direct application in treating gastrointestinal microbial infections and provides an energy economic alternative for long-term functional storage of therapeutic proteins at room temperature.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Review
Chemistry, Multidisciplinary
Lukas Naimovicius, Pankaj Bharmoria, Kasper Moth-Poulsen
Summary: Solar energy harvesting is a promising solution for global transition to carbon-neutral energy technologies. Existing technologies like photovoltaics (PV) and emerging concepts like solar fuels and molecular solar thermal energy storage (MOST) are rapidly advancing. However, addressing fundamental losses in solar energy, such as photon transmission, recombination, and thermalization, is crucial to fully exploit their potential.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Paulius Baronas, Jacob Lynge Elholm, Kasper Moth-Poulsen
Summary: A continuous flow degassing system was developed to achieve and monitor ppm-level oxygen concentrations in solutions. The system effectively removed up to 99.9% of ambient oxygen from solvents, but the lower oxygen concentrations were limited by gas permeation in the tubing. Oxygen solubility in solvents was found to play a significant role in efficient degassing. The data presented can be used to optimize experimental parameters for oxygen-sensitive reactions in flow chemistry setups.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Ambra Dreos, Junyue Ge, Francisco Najera, Behabitu Ergette Tebikachew, Ezequiel Perez-Inestrosa, Kasper Moth-Poulsen, Kaj Blennow, Henrik Zetterberg, Joerg Hanrieder
Summary: This study discovered a new fluorescent probe, NBD1, which can effectively diagnose beta amyloid plaques in Alzheimer's disease and studied its spectral and switching properties. This finding opens up new avenues for using NBD-based fluorescent probes for super-resolution or dual-color imaging and multifunctional microscopy to study the heterogeneity of amyloid plaques.
