Article
Chemistry, Multidisciplinary
Yining Ma, Mingchen Wu, Xiaodong Jin, Rui Shu, Chenchen Hu, Tongxiang Xu, Jing Li, Xinyu Meng, Xun Cao
Summary: The study investigated the performance of ammonium vanadium bronze as an anode material for aqueous lithium-ion batteries and Li+/Na+ hybrid ion batteries, showing good rate capability and excellent cycling stability. The capacity retention after 500 cycles was high, indicating potential for applications in rechargeable lithium-ion battery systems.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Meladia E. Purbarani, Jooeun Hyoung, Seung-Tae Hong
Summary: The research presents K0.5V2O5 as a cathode material for CIBs, showing a high reversible discharge capacity at room temperature. The findings demonstrate the potential for developing high-capacity crystal-water-free cathode materials for CIBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yutao Dong, Ran Zhang, Huaiqi Peng, Dandan Han, Xianfu Zheng, Yumiao Han, Jianmin Zhang
Summary: In this study, cobalt-doped vanadium tetrasulfide/reduced graphene oxide composites with an ultrathin layered structure were prepared and showed excellent electrochemical performance as active sulfur-host materials in lithium-sulfur batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Junyan Li, Wei Zhang, Xin Ge, Ming Lu, Xiangxin Xue, Zizhun Wang, Nailin Yue, Junkai Zhang, Xingyou Lang, Qing Jiang, Weitao Zheng
Summary: In this study, a facile one-step hydrothermal method was used to fabricate Mo2CTx-N with superior advantages. The synergistic effects of pillared structure, immobilizing -F groups and unlocking Mo-based redox contributed to its excellent reversible capacity.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Tatsuki Shigedomi, Yushi Fujita, Takuma Kishi, Kota Motohashi, Hirofumi Tsukasaki, Hiroshi Nakajima, Shigeo Mori, Masahiro Tatsumisago, Atsushi Sakuda, Akitoshi Hayashi
Summary: All-solid-state batteries with sulfur-based positive electrode active materials have the advantages of safety and long cycle life. This study developed electrode-electrolyte bifunctional materials in the Li2S-V2S3-LiI system with high ionic and electronic conductivity, offering new solutions for increasing the energy density of all-solid-state batteries.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Environmental
Ke Wang, Ruilong Yuan, Mengjun Li, Ying Huang, Wei Ai, Zhuzhu Du, Pan He, Binwu Wang
Summary: In this study, Al+-intercalated NH4V4O10 nanosheet grown on carbon cloth (Al-NVO@CC) was synthesized via a one-step hydrothermal reaction. The expanded lattice spacing of the synthesized Al-NVO@CC improves the electrochemical stability and facilitates Zn2+ ion intercalation/deintercalation in AZIBs. The material exhibits high reversible capacity, long-term cyclability, and excellent rate performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Etienne Le Calvez, Julio Cesar Espinosa-Angeles, Eric Gautron, Eric Quarez, Olivier Crosnier, Thierry Brousse
Summary: Oxides derived from the ReO3 structure, such as bronzes or Wadsley-Roth phases, have attractive properties as negative electrodes for Li-ion batteries. In this study, the hexagonal bronze Cs0.5Nb2.5W2.5O14 and its protonated H0.25Cs0.25Nb2.5W2.5O14 derivative were investigated. The protonated phase exhibited higher specific capacities and better capacity retention at high currents due to favorable lithium ion diffusion and a solid solution mechanism during lithium insertion.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Environmental
Xu Dong, Yiren Lu, Zhengyu Wu, Xianhua Liu, Yindong Tong
Summary: Understanding photochromism is crucial for developing new ways to modulate the optical responses of materials. In this study, ammonium tungsten bronze (NH4)xWO3 with a unique flower-like hierarchical structure was prepared, leading to a significant advance in photochromism. The large surface area exposed more photoactive sites, resulting in a high color difference. The study also revealed the essential surface structure-breaking behaviors of hydrogen bonds between NH4+ and tunneled WO3 frameworks. Furthermore, the energy-saving window based on hydrogen ammonium tungsten bronze coating showed great potential for reducing indoor air temperature and temperature difference between various indoor areas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Fei Chen, Shuo Wang, Yi-Xuan Li, Kuo Cao, Chun-Hua Chen
Summary: In this study, a hollow sphere structured Co3V2O8 was synthesized and used as a new anode material for potassium ion batteries, demonstrating high reversible capacity, great rate performance, and good cycling stability. The hollow porous structure helps alleviate volume change during the charging and discharging processes, while a half-conversion reaction mechanism combined with pseudocapacitive adsorption contributes to the superior electrochemical properties of the material.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Jiajia Song, Lingjiang Kou, Yong Wang, Yong Pang, Taotao Ai, Koji Kajiyoshi, Mengting Liu, Weiwei Bao, Wenhu Li, Panya Wattanapaphawong
Summary: In this study, Fe-doped (NH4)2V12O27·xH2O was synthesized using solvothermal method which greatly enhanced material's electrochemical performance. The resulting product showed remarkably high capacity of 165 mA h g-1 at 50 mA g-1 and ultrahigh stability with 74.2% retention over 1000 cycles at 1 A g-1. This improvement is attributed to increased intrinsic conductivity from Fe doping which promotes absorption and release kinetics of Zn2+ and prevents gradual dissolution of V-O layer.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Jia'ni Gong, Pengfei Bai, Jingjing Sun, Yanyan Liu, Xueying Dong, Tao Hu, Changgong Meng, Yifu Zhang
Summary: In this study, oxygen-deficient VO2.xH(2)O nanoarrays (d-HVO) are designed and synthesized as anode materials for NH4+ rechargeable batteries. The oxygen defects in d-HVO enhance the conductivity and diffusion rate of NH4+, resulting in improved electrochemical performances. The d-HVO-2 with 2 mmol thiourea exhibits the best performance, with a capacity of 220 mAh.g(-1) at 0.1 A.g(-1). A full cell assembled with d-HVO-2 and polyaniline (PANI) cathode shows excellent cycling stability and high power density, and the flexible d-HVO-2 & PAR;PANI battery demonstrates outstanding flexibility under different bending conditions.
Article
Chemistry, Multidisciplinary
Zhan Zhou, Lufang Ma, Chaoliang Tan
Summary: This study reported a method to prepare layered (NH4)2V6O16·H2O nanosheets and found that these nanosheets exhibit enhanced performance as an anode material for lithium-ion batteries compared to commercial V2O5 nanoparticles.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Energy & Fuels
Yuexin Liu, Mingyuan Gao, Xiaoyu Li, Xuxia Hao, Kefeng Cai
Summary: Porous ammonium ihleite microparticles (p-AIMs) have been successfully fabricated using iron-based zeolite imidazole frameworks (Fe-ZIFs) as in-situ sacrificial templates. The initial p-AIMs exhibit a specific capacity of 331 F g-1 in a three-electrode system. Assembled into an asymmetric supercapacitor (ASC) with nickel-cobalt-based metal-organic frameworks (NiCo-MOFs), the ASC shows an ultra-wide potential window of 1.7 V and a specific capacitance of 312 F g-1 at 3.1 A g-1, with a capacitance retention of 84.6% after 5000 cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Hee Jae Kim, Jae Hyeon Jo, Ji Ung Choi, Natalia Voronina, Docheon Ahn, Tae-Yeol Jeon, Hitoshi Yashiro, Yauhen Aniskevich, Genady Ragoisha, Eugene Streltsov, Seung-Taek Myung
Summary: Carbon-modified Li4Ti5O12 spinel successfully stores potassium and exhibits excellent electrode performance, including high initial charge capacity, cycling stability, and high-rate capability.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Satoshi Hiroi, Koji Ohara, Osami Sakata
Summary: The research revealed that the rapid capacity fading of Li2VO2F during cycling is due to the partial transformation of its disordered rock-salt crystal to an amorphous phase during delithiation, leading to structural changes and fluctuation in anion concentration.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Seokbum Kang, Chang-eui Yang, Boosik Jeon, Bonhyeop Koo, Seung-Tae Hong, Hochun Lee
Summary: A new study introduces a sulfone-based crystalline organic electrolyte (SCOEs) for all-solid-state sodium batteries, which shows improved ionic conductivity, cycling performance, excellent oxidative stability, and meltable characteristics for intimate electrode contact, with negligible flammability compared to conventional carbonate electrolytes.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Meladia E. Purbarani, Jooeun Hyoung, Seung-Tae Hong
Summary: The research presents K0.5V2O5 as a cathode material for CIBs, showing a high reversible discharge capacity at room temperature. The findings demonstrate the potential for developing high-capacity crystal-water-free cathode materials for CIBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jeongmin Lee, Hunho H. Kwak, Sang-eun Bak, Geun Jun Lee, Seung-Tae Hong, Muhammad A. Abbas, Jin Ho Bang
Summary: In this study, a new class of titanium niobium oxide (TNO) material TiNbO4 was synthesized by changing the reaction atmosphere into a slightly reductive environment and using in situ carbonization. The lithium intercalation process in TiNbO4 occurs via a purely solid-solution process. The distinctive electrochemical behavior of TiNbO4, attributed to its unique structural and electronic properties, presents great potential for the development of high-performance anode materials.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Boosik Jeon, Hunho H. Kwak, Seung-Tae Hong
Summary: This study reports a bilayered Ca0.28V2O5·H2O as a high-capacity CIB cathode material with excellent capacity and cyclability. Its unique intercalation mechanism and highly reversible charge-discharge cycle provide valuable insights for developing high-performance CIB cathodes.
CHEMISTRY OF MATERIALS
(2022)
Article
Electrochemistry
Nayeon Kim, Seoungwoo Byun, Dahee Jin, Cyril Bubu Dzakpasu, Sun Ho Park, Hyungjin Lee, Seung-Tae Hong, Yong Min Lee
Summary: Electrode alignment is a crucial design parameter for reliable full cells with limited lithium ion inventory. Misalignment may result in decreased performance but sometimes lead to better electrochemical characteristics. Therefore, it is important to verify electrode alignment even after cell evaluation to exclude data from misaligned full cells.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Seokbum Kang, Boosik Jeon, Seung-Tae Hong, Hochun Lee
Summary: This study introduces a solid-state organic electrolyte for potassium batteries, which exhibits high ionic conductivity, electrochemical stability, and good contact with composite electrodes. The batteries filled with this electrolyte show improved cycle performance and high Coulombic efficiency compared to those with conventional carbonate electrolytes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Jeyne Lyoo, Hyojeong J. Kim, Jooeun Hyoung, Munseok S. Chae, Seung-Tae Hong
Summary: This study reports on the application of Zinc-substituted Li4P2S6 as a Li-ion conductor, which showed significantly improved ionic conductivity compared to unsubstituted Li4P2S6. The improvement was achieved by generating Li-ion deficiency through Zn substitution, enabling Li ions to hop within the crystal structure. The diffusion pathways of Li ions were found to be mostly two-dimensional in this structure.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Jihun Roh, Jeyne Lyoo, Seung-Tae Hong
Summary: Sulfide inorganic materials with aliovalent substitutions of Sb5+ for Ge4+ in Li4GeS4 showed enhanced ionic conductivity and air stability, making them promising solid electrolytes for Li-ion all-solid-state batteries. The material with x = 0.4 displayed the highest ionic conductivity, around 10-4 S cm-1 at 303 K, and retained 70% of the initial conductivity after exposure to air with a relative humidity of 15% for 70 min. A press cell composed of the electrolyte, TiS2 composite cathode, and In-Li alloy anode showed excellent cycle performance. These findings provide insights into the synthesis design of air-stable solid electrolytes for all-solid-state batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Dedy Setiawan, Hyojeong J. Kim, Jeyne Lyoo, Seung-Tae Hong, Munseok S. Chae
Summary: In this study, a novel cathode material, layered iron vanadate, was proposed for use in non-aqueous magnesium-ion batteries (MIBs). The material exhibited high reversible capacity and average voltage, as well as stable cycle life. The reversibility of the magnesium intercalation reaction on the material was confirmed through experimental analysis. This study offers valuable insights for the design and development of high-performance cathodes for non-aqueous MIBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hyeri Bu, Hyungjin Lee, Jooeun Hyoung, Jongwook W. Heo, Dokyung Kim, Young Joo Lee, Seung-Tae Hong
Summary: This study reports a crystal-water-free ammonium vanadate as a host material for calcium-ion batteries. By a unique ion exchange reaction, reversible insertion and extraction of calcium ions and ammonium ions are achieved. This finding reveals the mechanism of electrochemical reactions in layered materials and highlights the importance of reversible cycling.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Dedy Setiawan, Munseok S. Chae, Seung-Tae Hong
Summary: Based on the research, water content has a significant impact on the storage capacity of vanadium dioxide material. The discharge capacity can reach 250 mAh g(-1) in the wet electrolyte, while it is only 51 mAh g(-1) in the dry electrolyte. Through various analyses, the study clarifies the reaction mechanism causing the limited capacity. Therefore, appropriate regulation of water content in the electrolyte can effectively enhance the capacity of magnesium-ion battery cathodes.
Article
Chemistry, Inorganic & Nuclear
Jihun Roh, Namgyu Do, Alicia Manjon-Sanz, Seung-Tae Hong
Summary: This study reports the discovery of a new crystal structure of Li2GeS3, an ionic conductor, which holds potential for developing high-performance solid-state batteries. The crystal structure and ionic conductivity of Li2GeS3 have been unveiled for the first time, providing valuable insights for designing new ionic conductors for all-solid-state batteries.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Seungyeop Choi, Nayeon Kim, Dahee Jin, Youngjoon Roh, Dongyoon Kang, Hyungjin Lee, Seung-Tae Hong, Hongkyung Lee, Yong Min Lee
Summary: Electrode misalignment in pouch-type lithium-ion batteries can lead to decreased initial Coulombic efficiency and reversible discharge capacity due to Li dendritic growth on the Cu current collector. To address this issue, applying an insulating layer to block the side of the Cu current collector can effectively suppress Li dendritic growth and improve both the initial Coulombic efficiency and reversible discharge capacity. This simple idea provides an excellent option for ensuring the safety of LIBs with misaligned electrode pairs.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Dedy Setiawan, Hyungjin Lee, Hunho H. Kwak, Seung-Tae Hong, Munseok S. Chae
Summary: This study introduces a new cathode material, double-layered Ca0.26V2O5.H2O, for Zn-ion batteries that demonstrates outstanding performance in a wet organic electrolyte. The study not only presents Ca0.26V2O5.H2O as a new cathode material for Zn-ion batteries but also provides valuable insights into the electrochemical zinc intercalation/crystal water extraction in wet organic electrolytes.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Physical
Hyeri Bu, Hyungjin Lee, Dedy Setiawan, Seung-Tae Hong
Summary: This Review presents the recent accomplishments and challenges in the development of cathode materials for nonaqueous CIBs, classified by the constituent anion type and Ca diffusion dimensionality. Each material is discussed in terms of structural aspects, electrochemical properties, intercalation mechanisms, and problems to be solved. The research progress suggests unexplored opportunities for discovering new cathode materials with improved performances.
CHEMICAL PHYSICS REVIEWS
(2022)
