Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Woosung Choi, Jaesang Yoon, Eunkang Lee, Won-Sub Yoon
Summary: The study synthesized four different MnO2 polymorphs with controlled morphology to investigate their influences in conversion-based materials. Experimental results showed that spinel-phased MnO2 was formed during charge storage reactions for all samples, but the electrochemical performance varied based on the initial crystal structure. Among the polymorphs, lambda-MnO2 exhibited the highest reversible capacity of around 1270 mAh g(-1) due to its faster kinetics and structural similarity between cycled and pristine states. These findings suggest that polymorphs are an important factor in designing high-performance materials for next-generation rechargeable batteries.
Article
Chemistry, Multidisciplinary
Jiang Cui, Hongkui Zheng, Kai He
Summary: Conversion-type materials are being explored as potential high-energy-density alternatives for rechargeable ion batteries, with in situ TEM being extensively employed to provide mechanistic insights into the behavior of battery materials. This review comprehensively summarizes recent developments in in situ TEM techniques for investigating dynamic phase transformation and associated structural, morphological, and chemical evolutions during conversion reactions with alkali ions in secondary batteries, with a special emphasis on spinel metal oxides and 2D metal chalcogenides. Unique scientific findings obtained through in situ TEM are highlighted, addressing fundamental questions and practical issues related to phase transformation, structural evolution, electrochemical redox, reaction mechanism, kinetics, and degradation.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shuang Li, Yipeng Sun, Ning Li, Wei Tong, Xueliang Sun, Charles T. Black, Sooyeon Hwang
Summary: In this study, two different types of porous structures in high-voltage lithium, manganese-rich layered cathodes are revealed, along with the significance of the interface between the cathode and electrolyte in solid-state batteries. Nanopores are found near the interface, while nanovoids are formed during in situ Li+ extraction. Despite the development of nanovoids, the layered structure is preserved.
Article
Chemistry, Multidisciplinary
Mylene Hendrickx, Andreas Paulus, Maria A. Kirsanova, Marlies K. Van Bael, Artem M. Abakumov, An Hardy, Joke Hadermann
Summary: The morphology and nanostructure of cathode materials in lithium-ion batteries have a significant impact on their electrochemical performance. By selecting an appropriate synthesis strategy, the particle morphology and structure can be controlled, leading to improved battery performance.
Article
Chemistry, Physical
Kae E. Fink, Bryant J. Polzin, John T. Vaughey, Joshua J. Major, Alison R. Dunlop, Stephen E. Trask, Gerald T. Jeka, Jeffrey S. Spangenberger, Matthew A. Keyser
Summary: This study evaluates the impact of metallic impurities on the practical performance of both anode and cathode materials in lithium-ion batteries through a synergistic combination of electrochemical and thermal analysis. It is found that metallic contaminants may disrupt performance through direct reaction with lithium and accelerate electrolyte degradation, as well as interfere with the formation of solid electrolyte interface at the cathode during formation cycling. Coupled electrochemical and thermal analysis is suggested as a method to identify contaminants and elucidate specific mechanisms of reactivity for metallic impurities under anodic and cathodic conditions.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Sergey Yu. Luchkin, Maria A. Kirsanova, Dmitry A. Aksyonov, Svetlana A. Lipovskikh, Victoria A. Nikitina, Artem M. Abakumov, Keith J. Stevenson
Summary: Li-rich layered metal oxides have been extensively studied as potential positive electrode materials for Li-ion batteries. This research investigates the cycling-driven electrochemical activation process in Li-rich materials, which leads to an increase in reversible capacity. The activation process involves oxidation and reduction reactions, with the rate being influenced by the cycling rate.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Katja Lahtinen, Eeva-Leena Rautama, Hua Jiang, Samuli Rasanen, Tanja Kallio
Summary: The study found that the structure and capacity of aged LiCoO2 can be restored through re-lithiation, providing a new method for the recycling of used batteries.
Article
Chemistry, Multidisciplinary
Alfonso Pozio, Mariasole Di Carli, Annalisa Aurora, Mauro Falconieri, Livia Della Seta, Pier Paolo Prosini
Summary: Activated hard carbons from waste biomasses were used as active materials for battery electrodes, showing good performance in lithium-sulfur and lithium-ion batteries.
Article
Energy & Fuels
Nesrin Bugday, Emine Altin, Serdar Altin, Sedat Yasar
Summary: The synthesis and characterization of CoS@ZIF-12-C composite anode materials are reported. CoS nanoparticles embedded in N-doped porous carbon were successfully synthesized using a metal-organic framework as the template. The battery performance and structural characteristics of the CoS@ZIF-12-C composite material were studied through battery tests and various analysis methods.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
Daniel Perez-Antolin, Cristina Irastorza, Sara Gonzalez, Rebeca Moreno, Enrique Garcia-Quismondo, Jesus Palma, Julio J. Lado, Edgar Ventosa
Summary: This study proposes a new concept of Regenerative Electrochemical Ion Pumping Cell (REIPC) based on semi-solid electrodes, which allows for simple and cheap cell regeneration. It demonstrates remarkable electrochemical performance and competitive ion separation capability, along with significant cost reduction compared to conventional Electrochemical Ion Pumping Cell (EIPC) systems.
Article
Chemistry, Physical
Fernando Cano-Banda, Ana Gallardo-Gutierrez, Luis Luviano-Ortiz, Abel Hernandez-Guerrero, Ankur Jain, Takayuki Ichikawa
Summary: In this study, different battery compositions were tested for all-solid-state lithium ion batteries operating at temperatures ranging from 30 degrees C to 120 degrees C. The MgH2/3LiBH(4)·LiI/Acetylene Black carbon vertical bar 80Li(2)S-20P(2)S(5) vertical bar Li cell showed the best performance with an initial capacity of 1570 mAh/g at 30 degrees C.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Hussen Maseed, Shaikshavali Petnikota, Vadali V. S. S. Srikanth, Naresh Kumar Rotte, Madhavi Srinivasan, Francesco Bonaccorso, Vittorio Pellegrini, Mogalahalli Reddy
Summary: Highly crystalline few-layered graphene (hcFLG) synthesized using microwave exfoliation of in-house prepared graphene oxide exhibits unique lithiation electrochemistry in Li-ion coin cell. The hcFLG shows enhanced surface lithiation above 0.3 V and diffusion-controlled lithiation below 0.3 V, delivering reversible specific capacities at different current rates. It also demonstrates excellent rate capability and safe in-situ exfoliation, making it a promising candidate for emerging battery technologies like 'All Graphene Battery'.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Dohyeong Seok, Weon Ho Shin, Sang Wook Kang, Hiesang Sohn
Summary: A BaTiO3-coated SnO2 microsphere composite with high porosity was developed as an anode for high-performance Li-ion batteries, exhibiting improved Li+ ion mobility and electrochemical performance due to the synergistic effect of locally polarized piezoelectric fields and high porosity. The composite anode showed much better rate performance and cycle stability compared to control anodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuki Sasaki, Kaname Yoshida, Tadahiro Kawasaki, Akihide Kuwabara, Yoshio Ukyo, Yuichi Ikuhara
Summary: Aqueous zinc-based batteries are expected to be low-cost and high energy density, however, dendrite formation during charging remains a major issue. In situ TEM observations revealed that dendrite growth from the zinc anode causes short-circuiting and cycle degradation in zinc-based batteries. Characterization of electrochemical zinc deposition is crucial for realizing long life rechargeable zinc-based batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Jiliang Zhang, Gi-Hyeok Lee, Vincent Wing-hei Lau, Feng Zou, Yingmin Wang, Xuelian Wu, Xun-Li Wang, Chi-Liang Chen, Chun-Jen Su, Yong-Mook Kang
Summary: The study suggests that rapid conversion reactions in high-rate cycling can lead to reduced crystallite size and the formation of Fe-Fe-Fe medium-range ordering in alpha-Fe2O3 electrodes, resulting in higher capacity and improved performance.
