Article
Chemistry, Multidisciplinary
Filipp S. Volkov, Svetlana N. Eliseeva, Mikhail A. Kamenskii, Alexey Volkov, Elena G. Tolstopjatova, Oleg Glumov, Lijun Fu, Veniamin V. Kondratiev
Summary: In this study, a nanocomposite of vanadium oxide with conducting polymer was synthesized through microwave-assisted hydrothermal synthesis and extensively characterized for its structural and electrochemical properties. The composite exhibited excellent electrochemical performance with high specific capacities and stable cycling properties.
Article
Materials Science, Ceramics
Geun Yoo, Gyeong Hee Ryu, Bon-Ryul Koo, Geon-Hyoung An
Summary: This study presents a novel approach utilizing defect engineering to create interface-defective V2O5 nanochips, resulting in improved specific capacity, rate capability, and long-term cycling stability in rechargeable aqueous zinc-ion batteries. The development of this high-performance cathode electrode has the potential to advance next-generation energy technologies, offering high energy density and reliable power output.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Gan Qu, Kai Guo, Weijie Chen, Yu Du, Ye Wang, Bingbing Tian, Jianan Zhang
Summary: In this study, a hexagonal Cs0.3V2O5 cathode material is successfully fabricated and investigated in zinc-ion batteries. Compared with traditional vanadium oxides, the introduction of Cs changes the atomic arrangements, stabilizes the structure, and facilitates the diffusion of Zn2+. This leads to a high specific capacity of 543.8 mA h g(-1) at 0.1 A g(-1) and excellent cycle life over 1000 cycles with 87.8% capacity retention at 2 A g(-1). Additionally, the morphological evolution and energy storage mechanisms are revealed. This work introduces a phase engineering strategy for the fabrication of hexagonal vanadium oxide cathodes and elucidates their application in zinc-ion batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Jin-Sung Park, Sungjin Yang, Yun Chan Kang
Summary: The study demonstrates that the porous microspheres consisting of V2O3 anchored on entangled carbon nanotubes exhibit excellent performance as cathode for aqueous zinc-ion batteries, with high reversible capacity and superior electrochemical properties, attributed to their unique structure and composition.
Article
Nanoscience & Nanotechnology
Ying Liu, Yi Liu, Xiang Wu, Young-Rae Cho
Summary: This study reports the use of carbon-encapsulated VOx microspheres, grown by controlling the calcination temperature, as ideal cathode materials for aqueous zinc ion batteries. These batteries exhibit high specific capacity and reversible rate performance, and also demonstrate favorable mechanical and cycle stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jian Wu, Jinlei Meng, Zhanhong Yang, Hongzhe Chen, Yao Rong, Lie Deng, Zhimin Fu
Summary: This study reports cuprous oxide and cuprous oxide/reduced graphene oxide as cathodic materials for aqueous zinc-ion batteries. The experimental results show excellent electrochemical performance and cycle lifespan, and reveal the energy storage mechanism of the materials, which provide valuable insights for the research on copper-based cathodic materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jae Hun Choi, Jin-Sung Park, Yun Chan Kang
Summary: This study introduces a procedure for the formation of vanadium dioxide-nanoflake-reduced graphene oxide composite microspheres with open pores through spray pyrolysis, which exhibits high rate capability and stable cycle performance as a cathode for zinc-ion batteries.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yi Liu, Ying Liu, Xiang Wu, Young-Rae Cho
Summary: Aqueous zinc-ion batteries have great potential in energy storage devices due to their abundant zinc resources and intrinsic safety. However, developing suitable cathode materials that match with the anodes remains a significant challenge. In this study, we designed carbon-coated V2O5 microspheres through a chitosan-assisted route. The amorphous carbon layer effectively enhances the electrical conductivity of the active materials, thereby improving the electrochemical performance. The assembled Zn/V2O5@0.25C batteries achieved a specific capacity of 532.4 mAh g(-1) at 0.2 A g(-1) with an energy density of 354.9 Wh kg(-1). They exhibit long-term cycling stability with a retention rate of 86% after 3000 cycles at 5 A g(-1).
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Yi Liu, Ying Liu, Xiang Wu, Young-Rae Cho
Summary: Aqueous zinc-ion batteries are promising for energy storage devices due to zinc resources and safety features. However, developing suitable cathode materials is still a major challenge. In this study, carbon-coated V2O5 microspheres were designed to enhance the electrical conductivity and improve electrochemical performance. The assembled Zn/V2O5@0.25C batteries achieved a high specific capacity of 532.4 mAh g(-1) at 0.2 A g(-1) and an energy density of 354.9 Wh kg(-1). They also showed excellent long-term cycling stability with a retention rate of 86% after 3000 cycles at 5 A g(-1).
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Di Li, Youye Dai, Lingyan Kong, Yuanxiang Gu, Lei Wang
Summary: A (NH4)2(S((S2)Mo(S2))3)/vanadium oxide/graphene oxide composite is synthesized via hydrothermal method and used as the cathode material for aqueous zinc ion batteries. After the first charging/discharging process, a novel vanadium-based cathode is formed, which exhibits excellent electrochemical properties due to the synergistic effect of molybdenum ion doping and graphene oxide supporting. The cathode material shows high discharge capacity, good cycling performance, and high capacity retention.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Chen-Yang Tian, You-De Li, Dan-Ni Du, Yu-Shan Zhang, Bing-Mei Zhang, Dong-Ting Zhang, Ling-Bin Kong, Mao-Cheng Liu
Summary: By tightly attaching V3O7 to the surface of graphene oxide through a hydrothermal reaction, a V3O7/GO heterostructure was achieved, resulting in improved cycle stability and rate capability compared to V3O7.
Article
Engineering, Environmental
Geun Yoo, Bon-Ryul Koo, Geon-Hyoung An
Summary: Zinc-ion batteries (ZIBs) are gaining attention as a promising alternative to lithium-ion batteries (LIBs) due to their abundance of zinc source, satisfactory safety levels, low cost, and eco-friendliness. However, the volume expansion of vanadium pentoxide (V2O5) during the aging process of ZIBs limits its capacity utilization. In this study, nanosized split V2O5 with H2O-intercalated interfaces (NSVOHI) is prepared as a ZIB cathode material without an aging process, resulting in stable capacity behavior, excellent energy storage performance, and reversibility.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Energy & Fuels
Elena G. Tolstopyatova, Mikhail A. Kamenskii, Veniamin V. Kondratiev
Summary: This review focuses on the design of zinc ion storage performance enhancement using intrinsically conducting polymers in vanadium oxide-based composites and the mechanism of intercalation processes. The main challenges and prospects for further development of vanadium oxide-conducting polymer composite structures are summarized and discussed.
Article
Chemistry, Physical
Chunli Li, Meng Li, Huiting Xu, Fan Zhao, Siqi Gong, Honghai Wang, Junjie Qi, Zhiying Wang, Xiaobin Fan, Wenchao Peng, Jiapeng Liu
Summary: A hollow nanotube-like amorphous vanadium oxide and carbon hybrid is prepared as cathode materials for aqueous zinc-ion batteries using an in-situ electrochemical induction strategy. The hybrid exhibits abundant ion storage sites, isotropic ion diffusion routes, and excellent conductivity, resulting in outstanding specific capacity and cycling stability. This work provides a new approach for developing high-performance cathode materials for aqueous zinc-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Yang Li, Wang Yang, Wu Yang, Yongfeng Huang, Guoxiu Wang, Chengjun Xu, Feiyu Kang, Liubing Dong
Summary: This study presents a promising ZIB cathode material with excellent electrochemical performance in Zn(OTf)2 aqueous electrolyte, showcasing high capacity, fast charge/discharge ability, high energy density, and good cycling performance. Mechanism analysis reveals the transformation of the cathode material into Zn-3+xV(2)O(7)(OH)2.2H(2)O nanoflakes as the main host for Zn2+ storage. In contrast, the cathode material shows inferior behavior in ZnSO4 aqueous electrolyte due to insufficient transformation.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Energy & Fuels
Kihyuk Yun, Haenam Jang, Geon-Hyoung An
Summary: Zinc (Zn)-ion hybrid capacitors (ZICs) are considered the next-generation energy storage technology due to their high energy density and excellent safety. However, ZICs still face challenges in poor rate performance and long-term stability at high current density, related to inefficient interface utilization between Zn anode and electrolyte, as well as poor electrode wettability leading to uniform Zn dendrite growth on the anode surface.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Young-Geun Lee, Seoyeong Kim, Keun Young Lee, Yong-Ryun Jo, Geon-Hyoung An
Summary: An improved-quality graphene film uniformly decorated with ultrafine manganese oxide nanoparticles is used as a multifunctional current collector, resulting in a zinc-ion battery with superb energy storage performance and reversibility. The battery exhibits an improved specific capacity of 404.7 mA h g(-1) at a current density of 0.1 A g(-1) and an excellent ultrafast cycling stability with a capacity retention of 83.7% for up to 300 cycles at a current density of 2.0 A g(-1).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Sijin Park, Geon-Hyoung An
Summary: Zinc-ion batteries (ZIBs) are a potential alternative to lithium-ion batteries due to their low cost, eco-friendly nature, and high safety level. However, ZIBs suffer from low-rate capability and poor cycling life caused by the dissolution of manganese in the electrolyte. This study introduces a manganese sulfate additive to overcome these issues and improve the electrochemical performance of manganese-based cathodes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Geun Yoo, Bon-Ryul Koo, Geon-Hyoung An
Summary: Zinc-ion batteries (ZIBs) are gaining attention as a promising alternative to lithium-ion batteries (LIBs) due to their abundance of zinc source, satisfactory safety levels, low cost, and eco-friendliness. However, the volume expansion of vanadium pentoxide (V2O5) during the aging process of ZIBs limits its capacity utilization. In this study, nanosized split V2O5 with H2O-intercalated interfaces (NSVOHI) is prepared as a ZIB cathode material without an aging process, resulting in stable capacity behavior, excellent energy storage performance, and reversibility.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Soobeom Lee, Geon-Hyoung An
Summary: Flexible fibrous supercapacitors (FFS) are considered as ideal energy storage devices for wearable electronics due to their high energy density, high safety, long cycle life, and simple manufacturing process. A novel FFS-SARE composed of surface-activated carbon fibers and a redox additive gel polymer electrolyte was fabricated, showing outstanding electrochemical performance and remarkable ultrafast cycling stability.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Young-Geun Lee, Geon-Hyoung An
Summary: Fibrous supercapacitors face challenges due to the active material of carbon fiber, but surface-activated CF can improve their performance.
KOREAN JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Energy & Fuels
Seoyeong Kim, Geon-Hyoung An
Summary: Due to their safety, low cost, and ease of assembly, zinc-ion batteries (ZIBs) have gained attention as promising energy storage devices. However, the use of carbon-based current collectors to enhance the energy storage performance of ZIBs has limitations. To overcome this, functionalizing the surface of the current collectors to enhance their chemical activity has emerged as a promising method for future ZIBs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Jaeyeon Lee, Fengyi Shen, Sijia Miao, Gyeong Hee Ryu, Byoungyong Im, Dae Guen Kim, Geon-Hyoung An, Yuljae Cho
Summary: Fiber/textile-based wearable electronics have been commercialized in recent years, but most of them can only be re-charged through an external electric connection. However, a bottom-up approach of constructing wearables from their building block fibers provides a solution to enable self-charging capability. A viable method to achieve self-charging capability of building block fibers through a template-free scalable method is introduced in this study.
Article
Multidisciplinary Sciences
Sanghyo Lee, Hyung Woo Choi, Ctia Lopes Figueiredo, Dong-Wook Shin, Francesc Maosa Moncunill, Kay Ullrich, Stefano Sinopoli, Petar Jovancic, Jiajie Yang, Hanleem Lee, Martin Eisenreich, Umberto Emanuele, Salvatore Nicotera, Angelo Santos, Rui Igreja, Alessio Marrani, Roberto Momente, Joao Gomes, Sung-Min Jung, Soo Deok Han, Sang Yun Bang, Shijie Zhan, William Harden-Chaters, Yo-Han Suh, Xiang-Bing Fan, Tae Hoon Lee, Jeong-Wan Jo, Yoonwoo Kim, Antonino Costantino, Virginia Garcia Candel, Nelson Duraes, Sebastian Meyer, Chul-Hong Kim, Marcel Lucassen, Ahmed Nejim, David Jimenez, Martijn Springer, Young-Woo Lee, Geon-Hyoung An, Youngjin Choi, Jung Inn Sohn, SeungNam Cha, Manish Chhowalla, Gehan A. J. Amaratunga, Luigi G. Occhipinti, Pedro Barquinha, Elvira Fortunato, Rodrigo Martins, Jong Min Kim
Summary: An integrated textile electronic system that allows for a free form factor system via textile manufacturing integration of fiber-based electronic components is presented. Previous attempts to develop conductive fibers and textile electronics did not meet the reliability and performance required for industrial-scale manufacturing. The system includes functional one-dimensional devices such as fiber photodetectors, fiber supercapacitors, fiber field-effect transistors, and fiber quantum dot light-emitting diodes. A proof of concept for smart homes is demonstrated, showing luminance modulation and letter indication based on sunlight intensity.
Review
Electrochemistry
Shengyi Hu, Chun Huang
Summary: Solid-state lithium batteries have received significant research attention for their potential advantages over conventional liquid electrolyte lithium batteries. The discovery of lithium solid-state electrolytes (SSEs) is still ongoing to address remaining challenges, and machine learning (ML) approaches could greatly expedite this process.
Review
Electrochemistry
Anupriya K. Haridas, Chun Huang
Summary: This review discusses the polysulfide inhibition strategies employed in room-temperature sodium-sulfur batteries (RT-NaSBs) through electrode and interfacial engineering, including sulfur immobilization and polysulfide trapping. The benefits of engineering the highly reactive Na anode interface in improving the stability of RT-NaSBs are also elucidated. Lastly, the future perspectives on designing high-performance RT-NaSBs for practical applications are briefly outlined.
Article
Electrochemistry
Bon-Ryul Koo, Young-Geun Lee, Sang Ho Lee, Geon-Hyoung An, Chun Huang
Summary: In this study, a new route of one-pot spray engineering was used to design Na0.44MnO2 cathodes, resulting in high-rate and cycle-stable performance for Na-ion batteries. The adjustment of electrode structure from dense to open sponge-like morphology improves ion insertion and transport kinetics, increasing the rate capability and cycling retention.
Article
Chemistry, Physical
Seoyeong Kim, Bon-Ryul Koo, Yong-Ryun Jo, Ha-Rim An, Young-Geun Lee, Chun Huang, Geon-Hyoung An
Summary: A hierarchical beta-MnO2 cathode material with interlaced nanosheets spheres was introduced through efficient defect engineering using fluorine (F)-doping and oxygen vacancies, improving ion insertion, transport kinetics, and electrical conductivity in ZIB. This resulted in a high energy density, superior high-rate performance, and good capacity retention, highlighting the potential of defect-engineered cathode materials for enhanced electrochemical performance in rechargeable aqueous batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
Jinhui Park, Geon-Hyoung An
Summary: By optimizing the gel electrolyte, a fibrous supercapacitor with improved ionic diffusion capability was obtained, showing superior electrochemical performance, including high specific capacitance, high-rate performance, and outstanding cycling stability.
KOREAN JOURNAL OF MATERIALS RESEARCH
(2021)
