https://scholar.dgist.ac.kr/handle/20.500.11750/219 2026-08-23T22:59:08Z 2026-08-23T22:59:08Z Sharma, Manisha Kumar, Deepak Shukla, Sangeeta Yu, Jong-Sung Sharma, Rupendra Kumar Mishra, Yogendra Kumar Sharma, Raj Kishore Sharma, Sanjeev Kumar https://scholar.dgist.ac.kr/handle/20.500.11750/60627 2026-08-19T08:40:12Z 2026-02-28T15:00:00Z

Title: Quantum heterostructured catalytic materials for selective multi-carbon green products Author(s): Sharma, Manisha; Kumar, Deepak; Shukla, Sangeeta; Yu, Jong-Sung; Sharma, Rupendra Kumar; Mishra, Yogendra Kumar; Sharma, Raj Kishore; Sharma, Sanjeev Kumar Abstract: Quantum heterostructures have emerged as next-generation catalytic architectures capable of driving highly selective multi-carbon products for sustainable energy advancement. The quantum-confined electronic structures, ultrahigh surface-to-volume ratios, and interfacial charge dynamics enable efficient activation and transformation of inert carbon feedstocks, such as CO2, into value-added C2+ molecules. Recent breakthroughs in compositional modulation, defect engineering, and controlled lattice coupling have unlocked new pathways for tunable binding energetics, suppressed parasitic reactions, and enhanced multi-electron transfer kinetics. This review systematically addresses advances in 2D/3D-driven catalytic platforms, including TMDs, MXenes, MOFs, COFs, g-C3N4, and emerging layered materials, highlighting engineered hybrid interfaces that integrate the chemical selectivity of 2D surfaces with the structural robustness of 3D supports. Mechanistic insights from electro-, photo-, and bio-assisted catalytic systems are analysed with an emphasis on C-C coupling efficiency, intermediate stabilization, and product branching rules. Critical bottlenecks encompassing durability, systemlevel integration, theoretical uncertainties, and scalable manufacturing are assessed, alongside strategic directions for industrial-grade carbon valorisation. This article aims to chart a forward-looking roadmap toward converting anthropogenic carbon into sustainable fuels and chemicals through atomically precise catalytic design.

2026-02-28T15:00:00Z Sung, Jong Hun Lee, Soyun Yu, Jeong-Hoon Lee, Jiwon Yu, Bo 이동현 Lee, Ha-Young Hong, Seung-Tae Ibnu Syafiq Imaduddin Kang, Joonhee Yu, Jong-Sung https://scholar.dgist.ac.kr/handle/20.500.11750/59982 2026-02-09T18:01:15Z 2025-11-30T15:00:00Z

Title: Engineering Hollow-Structured Carbon Framework to Facilitate High-Sulfur-Content Encapsulation for Lithium-Sulfur Batteries Author(s): Sung, Jong Hun; Lee, Soyun; Yu, Jeong-Hoon; Lee, Jiwon; Yu, Bo; 이동현; Lee, Ha-Young; Hong, Seung-Tae; Ibnu Syafiq Imaduddin; Kang, Joonhee; Yu, Jong-Sung Abstract: Lithium-sulfur batteries (LSBs) have emerged as promising candidates for next-generation energy storage systems due to their high theoretical energy density and cost-effectiveness. However, their practical application is severely limited by the shuttle effect of lithium polysulfides (LiPSs) and the inherently low electrical conductivity of sulfur, which leads to rapid capacity fading and poor rate performance. To address these challenges, this work develops a hollow-structured graphitic nitrogen-doped porous carbon (h-GNPC) framework derived from zeolitic imidazolate framework-8 via a magnesiothermic reduction (MR) process. This method effectively tailors the pore architecture and electrical conductivity, enabling efficient sulfur encapsulation and high sulfur loading up to 90 wt.%. Compared to a carbon host treated without the MR method, the h-GNPC exhibits enhanced porosity, which can accommodate sulfur with stabilized cyclability. As a result, a coin cell with sulfur-loaded h-GNPC cathode exhibits an initial capacity of 1292.9 mAh g−1 and enhanced capacity retention of 74.9% over 500 cycles at 0.2C as well as rate performance. Notably, pouch-type cells assembled with the h-GNPC cathode demonstrate excellent scalability and cycling stability, highlighting the practical potential of this design for the commercialization of LSBs technology.

2025-11-30T15:00:00Z Sung, Jong Hun Lee, Un Hwan Yeu, In Won Maulana, Muhammad Irfansyah Kang, Joonhee Yu, Jong-Sung https://scholar.dgist.ac.kr/handle/20.500.11750/59367 2026-01-15T12:40:12Z 2025-11-30T15:00:00Z

Title: Alloy-assisted stabilization of thin Li metal anodes in pouch-type cells Author(s): Sung, Jong Hun; Lee, Un Hwan; Yeu, In Won; Maulana, Muhammad Irfansyah; Kang, Joonhee; Yu, Jong-Sung Abstract: Lithium metal batteries (LMBs) with thin lithium (Li) metal anodes deliver higher energy densities compared to traditional LMBs with thicker Li anodes. However, Li metal anodes suffer from uncontrolled dendrite formation, resulting in poor cycle life and low coulombic efficiency (CE). To address these issues, we present metal trifluoromethanesulfonates (Mx(CF3SO3)y, MTFMS, where M = Li, Zn, Cu, Ag, Mg) as electrolyte additives to suppress dendrite formation and provide better cyclability. Interestingly, the metal (M) formed from MTFMS enables stable Li deposition through its alloying reaction with Li. In addition, a stable LiF-rich solid electrolyte interphase (SEI) is derived from –CF3 functional groups, further suppressing dendrite formation. Li‖Cu cells cycled with MTFMS exhibit a higher initial CE of up to 96.6% with significantly buffered overpotential. Furthermore, Li‖Li symmetric cells composed of MTFMS show superior cyclability for over 500 h. A LiNi0.8Mn0.1Co0.1O2 (NMC811) full cell assembled with a thin Li metal anode (≤50 µm) under practically controlled N/P and E/C ratios in pouch cell mode revealed a stabilized capacity retention of up to 82.3% for 150 cycles, along with excellent rate capability, particularly with MgTFMS. The introduction of MTFMS as an additive will establish a new framework in the design of high-energy-density LMBs using thin Li metal anodes.

2025-11-30T15:00:00Z Yu, Bo Gyan-Barimah, Caleb Wang, Jian Maulana, Muhammad Irfansyah Sung, Jong Hun Yu, Jeong-Hoon Hong, Seung-Tae Wang, Kunpeng Yu, Jong-Sung https://scholar.dgist.ac.kr/handle/20.500.11750/59286 2025-12-29T02:10:12Z 2025-10-31T15:00:00Z

Title: Magnesiothermically Synthesized TiO-Decorated 3D N-Doped Graphitized Porous Carbon as a Multifunctional Sulfur Host for Li-S Batteries Author(s): Yu, Bo; Gyan-Barimah, Caleb; Wang, Jian; Maulana, Muhammad Irfansyah; Sung, Jong Hun; Yu, Jeong-Hoon; Hong, Seung-Tae; Wang, Kunpeng; Yu, Jong-Sung Abstract: Lithium-sulfur batteries are promising next-generation energy storage platforms due to their high theoretical energy density, cost-effectiveness, and environmental benefits. However, challenges such as the lithium polysulfide (LiPS) shuttling effect, low Coulombic efficiency (CE), and poor sulfur conductivity hinder their practical application. To address these challenges, we designed a previously unreported sulfur (S) host material, titanium monoxide-decorated 3D N-doped graphitized porous carbon (TiO-NGPC), via a simple and efficient magnesium thermal reduction method. TiO nanoparticles embedded in N-doped graphitized porous carbon act as polar anchors for soluble LiPSs, accelerating redox reactions and alleviating the shuttle phenomenon. Simultaneously, the 3D graphitized carbon structure facilitates efficient electron transport. These synergistic effects collectively contribute to improved sulfur utilization. When employed as a sulfur-loaded cathode material, TiO-NGPC/S delivers an initial specific capacity of 1082.32 mAh g-1 at 1.0 C, retaining 580.68 mAh g-1 after 1000 cycles with a CE of 96.06%, demonstrating excellent cycling stability. At a high sulfur loading of 8.97 mg cm-2, it achieves a specific capacity of 1100.36 mAh g-1 and an area-specific capacity of 9.87 mAh cm-2. Furthermore, the assembled pouch cell exhibited an outstanding electrochemical performance, delivering a high specific capacity of 1158.78 mAh g-1 with a corresponding CE of 99% during the first discharge cycle. Density functional theory simulations confirm the strong adsorption of LiPSs and catalytic activity of TiO, highlighting its potential as a multifunctional host for high-performance lithium-sulfur batteries.

2025-10-31T15:00:00Z