Review
Electrochemistry
Qingbo Zhou, Linlin Wang, Wenyao Li, Kangning Zhao, Minmin Liu, Qian Wu, Yujie Yang, Guanjie He, Ivan P. Parkin, Paul R. Shearing, Dan J. L. Brett, Jiujun Zhang, Xueliang Sun
Summary: Sodium-ion batteries (SIBs) have developed rapidly due to the abundance, distribution, and low cost of sodium. Sodium superion conductor (NASICON) based electrode materials are promising for sodium storage, but their low electronic conductivity limits their electrochemical performance. Strategies such as coating with carbon, reducing size, combining with other carbon materials, and doping elements have been studied to enhance the conductivity of NASICON-based cathode materials.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Jun Lee, Sohyun Park, Young Park, Jinju Song, Balaji Sambandam, Vinod Mathew, Jang-Yeon Hwang, Jaekook Kim
Summary: In this study, a Na3V1.6Cr0.4(PO4)(3)/C (NVCrP@C) cathode was designed for high power density sodium-ion batteries by implanting Cr into the crystal structure of NVP and coating it with carbon. The substitution of Cr in the structure significantly enhanced the electrode's structural stability, while the thin carbon layer improved electrical conductivity, leading to excellent cycling stability and power capability of the NVCrP@C cathode.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Electrochemistry
R. Klee, P. Lavela, J. L. Tirado
Summary: Several samples of Na3+xMnxV1-xCr(PO4)3 series with varying Mn/V ratios were characterized using solid-state techniques, and it was found that intermediate Mn-V composition (x=0.4) has a beneficial effect on optimizing the performance of sodium-ion cells.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
P. Lavela, R. Klee, J. L. Tirado
Summary: Several samples of the Na4-xMn1-xCrxV(PO4)3 series were prepared by a sol-gel method to improve electronic conductivity, and their structural, chemical, and morphological properties were analyzed. The partial replacement of Mn by Cr was found to enhance sodium diffusivity, leading to improved reversible extraction of sodium and low interface resistance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ao Tang, Shu Zhang, Weiguang Lin, Dongdong Xiao, Jun Ma, Chaoqun Shang, Min Yan, Zhanhui Zhang, Changlian Chen, Zhiliang Huang, Katerina E. Aifantis, Pu Hu, Guanglei Cui
Summary: In this study, a novel ternary NASICON Na3.8MnV0.8Zr0.2(PO4)(3) was successfully synthesized and tested as a cathode material for rechargeable sodium-ion batteries. By partially substituting Zr4+, the obtained Na3.8MnV0.8Zr0.2(PO4)(3) exhibited a high capacity retention of 83.5% after 1000 cycles at 2 C, and impressive rate capacities of 73.1 mAh g(-1) at 20 C and 66.8 mAh g(-1) at 60 C. The enhanced rate capability can be attributed to the widened Na-ion channels and high Na-ion diffusivity. Additionally, the low volume expansion during Na-ion extraction contributes to the structural integrity over cycling. This work paves the way for the development of greener, high-power, and long-life sodium-ion batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yun Wu, Zhenyu Cao, Limei Song, Jianhua Gao
Summary: NFPM is a novel polyanionic-based NASICON-type compound with high Na+ and electronic conductivity. It crystallizes in a rare space group and undergoes one-phase reaction mechanism during charge and discharge, showing good reversible cyclability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
P. Lavela, R. Klee, M. A. Hidalgo, J. L. Tirado
Summary: Six NASICON type samples with Na4-xVFexMn1-x(PO4)3 stoichiometry were examined as positive electrodes for sodium-ion batteries, revealing the beneficial effect of iron substitution on kinetic response, supported by calculation of diffusion coefficients and cell resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Abdelwahed Chari, Karim El Ouardi, Marwa Tayoury, Mohamed Aqil, Brahim Orayech, Abdeslam El Bouari, Jones Alami, Mouad Dahbi
Summary: In this study, a Na3ZrCo(PO4)3 cathode material with high electrochemical performance was synthesized, providing guidance for enhancing the performance of sodium-ion batteries in the future.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Ceramics
Bandaru Santhoshkumar, Mahendra Birmaram Choudhary, Anup Kumar Bera, Seikh Mohammad Yusuf, Manasi Ghosh, Bholanath Pahari
Summary: This study proposes a new synthesis method to enhance the conductivity of sodium superionic conductor Na3Zr2Si2PO12 (NZSP) using liquid-phase sintering with the addition of amorphous-Na2Si2O5. The composite materials obtained showed improved conductivity, with the Na3Zr2Si2PO12/Na2Si2O5-5.0 wt.% (NZSP/NS-5.0) composite achieving a conductivity of 1.7 mS/cm at room temperature. The effects of additives on the formation, microstructure, and ion conductivity of NZSP were investigated.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Materials Science, Multidisciplinary
Raghunayakula Thirupathi, Vandana Kumari, Sumanta Chakrabarty, Shobit Omar
Summary: Sodium-ion batteries (SIBs) are considered the most promising energy storage devices for large-scale grid and electric vehicle applications due to the abundance, availability, and low cost of sodium resources. NASICON-framework oxides have shown great potential as SIB cathode materials due to their stable 3D open-framework structure and high redox potential. However, their poor electronic and ionic conductivities pose major challenges. This review summarizes the experimental and theoretical studies on the storage mechanism and sodium diffusion pathways in NASICON-structured oxides, as well as the evaluation of full sodium-ion battery cells utilizing NASICON-structured cathode and other materials as an anode.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Ceramics
Shufan Jia, Hirofumi Akamatsu, George Hasegawa, Saneyuki Ohno, Katsuro Hayashi
Summary: This study investigates the glass-ceramic processes to prepare NASICON-type NaxTi(2)(PO4)(3) as an anode candidate for sodium-ion batteries under different atmospheric conditions. The formation of NASICON-type NaTi2(PO4)(3) or Na3Ti2(PO4)(3) is observed depending on the inert or reducing atmosphere. The electrochemical properties and Na+ -storage capabilities of the glass-ceramic electrodes are correlated with the phase composition and fractions.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Anjan Chakraborty, Raghunayakula Thirupathi, Sandipan Bhattacharyya, Kushal Singh, Shobit Omar
Summary: Designing high sodium-ion conducting solid electrolytes is crucial for solid-state sodium-ion batteries. This study investigates the doping of earth-abundant divalent Mg2+ in a NASICON-type compound to enhance conductivity. The optimal composition shows significantly improved conductivity, and the electrochemical performance of solid-state batteries with optimized solid electrolyte is evaluated, demonstrating promising potential for rechargeable solid-state batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Se Woon Jung, Ji Eun Wang, Dong Gyu Kim, Ho Jin Ma, Dong Jun Kim, Do Kyung Kim
Summary: With the increasing application and market size of energy storage devices, the development of cost-effective and safe rechargeable batteries has become a major challenge. This study investigated a facile method for preparing a sodium superionic conductor and successfully improved its structural properties and ionic conductivity by employing reaction sintering and rare-earth element substitution. The results suggest that this approach is effective for obtaining an impurity-free and highly dense compound.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xin-Xin Zhao, Wangqin Fu, Hong-Xia Zhang, Jin-Zhi Guo, Zhen-Yi Gu, Xiao-Tong Wang, Jia-Lin Yang, Hong-Yan Lu, Xing-Long Wu, Edison Huixiang Ang
Summary: To enhance the application of vanadium-based NASICON materials in sodium-ion batteries, a rational strategy is to modify vanadium with cheap and abundant elements like iron and manganese, reducing the cost and toxicity. By using a ball-milling assisted sol-gel method, highly conductive KB branch chains were employed to encapsulate NVFP particles, resulting in improved ion diffusion ability and low volume change. The p-NVFP exhibited excellent cycling performance and capacity retention in both half cells and full cells.
Article
Nanoscience & Nanotechnology
Jiapin Liu, Yun Huang, Zhixing Zhao, Wenhao Ren, Zhuangzhi Li, Chao Zou, Ling Zhao, Zhaomin Tang, Xing Li, Mingshan Wang, Yuanhua Lin, Haijun Cao
Summary: The use of yeast as a template to derive NASICON structure Na3MnTi(PO4)(3) (NMTP) materials improves the control of particle size and enhances electronic conductivity, resulting in high capacity and cycle stability for sodium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
N. S. M. Viswanath, Mu-Huai Fang, Ha Tran Huu, Joo Hyeong Han, Ru-Shi Liu, Won Bin Im
Summary: This study demonstrates the tuning of thermal stability from negative thermal quenching to zero thermal quenching while preserving the original emission efficiency by introducing Lu3+ ions in Na3Sc2(PO4)(3):Eu2+. By utilizing optimized Lu3+-doped Na3Sc2(PO4)3:Eu2+ as the blue component, a high-power white light-emitting diode with high color-rendering index and luminous efficiency values was successfully fabricated. These findings emphasize the importance of structure-property relationships in designing thermally stable phosphors for high-power lighting applications.
CHEMISTRY OF MATERIALS
(2022)
Article
Energy & Fuels
Ha Tran Huu, Hang T. T. Le, Thanh Huong Nguyen, Lan Nguyen Thi, Vien Vo, Won Bin Im
Summary: In this study, SnS2 nanosheets were synthesized and grafted onto porous g-C3N4 as an anode active material for sodium-ion batteries. The composites showed outstanding performance in terms of high capacity and ultralong cycling stability, attributed to the presence of g-C3N4 relieving strains induced by volume variation of SnS2 and enhanced transport of electrons and sodium ions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Changhee Jang, Kangyong Kim, Hak-Won Nho, Seung Min Lee, Hanif Mubarok, Joo Hyeong Han, Hyeonjung Kim, Dongryeol Lee, Yangpil Jang, Min Hyung Lee, Oh-Hoon Kwon, Sang Kyu Kwak, Won Bin Im, Myoung Hoon Song, Jongnam Park
Summary: This article presents an optimized colloidal process for synthesizing uniform Cs5Cu3Cl6I2 nanocrystals with a superior quantum yield. Precise control of the synthesis parameters enables anisotropic growth and emission wavelength shifting. The synthesized nanocrystals exhibit excellent photoluminescence retention rate at high temperature and high stability under ambient conditions. Moreover, they demonstrate three-photon absorption-induced photoluminescence, indicating their potential for nonlinear optical applications. These thermally stable and highly luminescent nanocrystals overcome the limitations of conventional blue-emitting nanomaterials and provide insights into their colloidal synthesis mechanism.
Article
Materials Science, Multidisciplinary
Jinju Lee, Hansol Lee, Usik Kim, Woon Jin Chung, Won Bin Im
Summary: A remote color converter was fabricated using CsPbBr3 perovskite nanocrystal embedded glass (PNEG) as a green phosphor in a silicone (PiS) structure. The PNEG, when pasted on a glass substrate and mounted on a blue LED, exhibited enhanced thermal and photo stability compared to bulk PNEG. A white LED with a wide color gamut of up to 130% of the NTSC defined area was prepared using the remote color converter and K2SiF6:Mn4+ (KSF:Mn4+) as a red phosphor. The feasibility of a flexible remote white color converter using ultra-thin glass (UTG) as a substrate was also examined and discussed.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Joo Hyeong Han, Tuhin Samanta, Yong Min Park, Ha Jun Kim, Noolu Srinivasa Manikanta Viswanath, Hyeon Woo Kim, Bo Kyung Cha, Sung Beom Cho, Won Bin Im
Summary: We developed zero-dimensional lead-free monoclinic phases of Cs3TbCl6 and Rb3TbCl6 metal halides that are thermally and chemically stable. These materials exhibit high light yields and low detection limits, making them suitable for radiation detection in extreme environments. Thin films of Cs3TbCl6 and Rb3TbCl6 also show improved spatial resolutions compared to a commercial Gd2O2S:Tb3+ film in our X-ray imaging system.
ACS ENERGY LETTERS
(2023)
Article
Engineering, Chemical
Kyung Won Min, Jae Ho Choi, YoonSung Jung, Young Min Byun, Won Bin Im, Hyeong-Jun Kim
Summary: This study investigated the effects of heat-treatment temperature and hot-end coating on the mechanical properties and reliability of lightweight glass bottles. Chemical strengthening at the glass transformation temperature significantly improved the hardness and impact strength of the bottles. The use of hot-end coating reduced the distribution of impact strength and increased the Weibull modulus values, enhancing the reliability of the bottles after chemical strengthening.
Article
Nanoscience & Nanotechnology
Han Bin Cho, Ju Yeon Han, Ha Jun Kim, Noolu Srinivasa Manikanta Viswanath, Yong Min Park, Jeong Wan Min, Sung Woo Jang, Heesun Yang, Won Bin Im
Summary: Quantum dot light-emitting diodes (QLEDs) are promising for display applications. Polyethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole injection layer (HIL) material due to its high conductivity and work function. However, PEDOT:PSS-based QLEDs have a high energy barrier for hole injection, resulting in low device efficiency. Here, we demonstrate a bilayer-HIL using VO2 and a PEDOT:PSS-based QLED, which shows an 18% external quantum efficiency (EQE), 78 cd/A current efficiency (CE), and 25,771 cd/m(2) maximum luminance. This is compared to the PEDOT:PSS-based QLED with an EQE of 13%, CE of 54 cd/A, and maximum luminance of 14,817 cd/m(2). The increase in EQE is attributed to the reduction in the energy barrier between indium tin oxide (ITO) and PEDOT:PSS by the insertion of a VO(2) HIL. Therefore, our results demonstrate the effectiveness of a bilayer-HIL in increasing the EQE in QLEDs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Tuhin Samanta, Noolu Srinivasa Manikanta Viswanath, Sung Woo Jang, Jeong Wan Min, Han Bin Cho, Joo Hyeong Han, Won Bin Im
Summary: Researchers report zero-dimensional Cs3ScCl6:Sb3+(CSC:Sb3+) nanocrystals that exhibit bright white-light emission, achieved through the combination of blue and yellow emissions of carbon dots and spin-forbidden electronic transitions of Sb3+ ions. These nanocrystals have a high photoluminescence quantum yield and high thermal stability, and can be used to fabricate single-component white-light-emitting diodes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lan Nguyen Thi, Ha Tran Huu, Tri Nguyen Ngoc, Thi Thuy Trang Phan, Nguyen Minh Vuong, Thang Nguyen Van, Thanh Khan Dinh, Lam Nguyen Tan, Vien Vo
Summary: A series of BiO(ClBr)(0.5-x/2)I-x solid solutions were prepared using a facile refluxing synthesis and applied as photocatalysts for the degradation of organic pollutants. The synthesized solid solutions are constructed by nanoplates which transform into nanosheets for increasing iodine ions contents. Introducing iodine ions significantly decreased the optical bandgap of the obtained solid solutions. The solid-solution at x=0.2 showed the highest photocatalytic activity with a decomposition efficiency of 92.6% for 120 mins of reaction under LED irradiation, surpassing the performance of pure sample and BiOCl0.5Br0.5. This enhancement in photocatalytic performance was attributed to the effective separation of photo-induced electron-hole pairs.
Article
Chemistry, Multidisciplinary
Joo Hyeong Han, Tuhin Samanta, Han Bin Cho, Sung Woo Jang, N. S. M. Viswanath, Yu Ri Kim, Jeong Min Seo, Won Bin Im
Summary: This study presents a new Cs3GdCl6 0D metal halide material that shows high hydrochromic upconversion luminescence (UCL) in the form of polycrystals and nanocrystals. The hydrochromic UCL color change from green to red is achieved through co-doping Yb3+ and Er3+ in polycrystals. The water-sensing probe based on this material exhibits excellent repeatability and is suitable for real-time and long-term water monitoring. Moreover, the hydrochromic UCL property is also utilized for stimuli-responsive information encryption.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Lan Nguyen Thi, Ha Tran Huu, Tri Nguyen Ngoc, N. S. M. Viswanath, Hang T. T. Le, Thi Thuy Trang Phan, Le Tuan Nguyen, Qui Thanh Hoai Ta, Ho Le Han, Lam Nguyen Tan, Vien Vo
Summary: Among various advanced oxidation processes, photocatalysis has gained attention in wastewater treatment due to its low cost, high efficiency, and eco-friendliness. Bismuth oxyhalides, with their unique layered structure, have been widely used as efficient photocatalysts for degrading organic pollutants in water. However, the large bandgap and high recombination rate of BiOCl and BiOBr limit their practical application. This study successfully prepared solid solutions of BiOCl1-xBrx using a solid-state reaction, and their photocatalytic performance was significantly improved compared to the individual components. The optimal composition of x=0.5 showed high degradation efficiencies for rhodamine B and tetracycline under LED irradiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Ha Tran Huu, Ngoc Phi Nguyen, Vuong Hoang Ngo, Huy Hoang Luc, Minh Kha Le, Minh Thu Nguyen, My Loan Phung Le, Hye Rim Kim, In Young Kim, Sung Jin Kim, Van Man Tran, Vien Vo
Summary: This research reports an in-situ magnesiothermic reduction to synthesize a composite of Ge@C as an anode material for lithium-ion batteries. The obtained electrode delivered a specific capacity of 454.2 mAh&g-1 after 200 cycles at a specific current of 1000 mA&g-1. The stable electrochemical performance and good rate performance of the electrode are attributed to the enhancement in distribution and chemical contact between Ge nanoparticles and the biomass-based carbon matrix. A comparison with other synthesis routes has been conducted to demonstrate the effectiveness of contact formation during in situ synthesis.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Hyeon Woo Kim, Joo Hyeong Han, Hyunseok Ko, Tuhin Samanta, Dong Geon Lee, Dong Won Jeon, Woongchan Kim, Yong-Chae Chung, Won Bin Im, Sung Beom Cho
Summary: Exploring the vast and veiled chemical spaces through synthesis is crucial in solid-state materials. This study focuses on navigating metal halides, particularly the coexistence of perovskites and their derivatives, which has restricted their exploration. By combining high-throughput density functional theory calculations and machine learning, the researchers systematically explore inorganic halide perovskite derivatives, charting the chemical spaces and predicting their electrical properties and thermal stability. The successful synthesis of new Cs3LuCl6 and its application in white-light-emitting diodes showcase the potential practical applications of inorganic metal halides.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Zhongkai Yu, Woo Hyeon Jeong, Keehoon Kang, Hochan Song, Xinyu Shen, Hyungju Ahn, Seok Woo Lee, Xiangyang Fan, Ji Won Jang, Su Ryong Ha, Jeong Wan Min, Jong Hyun Park, Jongmin Han, Eui Dae Jung, Myoung Hoon Song, Dong Wook Chang, Won Bin Im, Sung Heum Park, Hyosung Choi, Bo Ram Lee
Summary: Metal halide based perovskite light-emitting diodes (PeLEDs) show great promise for future commercial display products, but the performance of blue PeLEDs falls short of commercial requirements. This study developed a polymer/small-molecule binary-blend hole transport layer (HTL) to address the charge balance issue and achieve efficient light emission.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Nanoscience & Nanotechnology
Thanh Huong Nguyen Thi, Ha Tran Huu, Hung Nguyen Phi, Van Phuc Nguyen, Quoc Dat Le, Lan Nguyen Thi, Thi Thuy Trang Phan, Vien Vo
Summary: Constructing SnS2/g-C3N4 composites significantly enhances the photocatalytic performance, achieving higher removal efficiency of Rhodamine B. The positive synergistic relationship between SnS2 and g-C3N4 and the rational Step-scheme charge transfer mechanism contribute to the improved photocatalytic efficiency.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
