Three-dimensional bowl-shaped solid additive achieves 20.52% efficiency organic solar cells with enhanced thermal stability via curvature-mediated morphology regulation
Zhicheng Zhong, Sergio Gámez‐Valenzuela, Jinwoo Lee, Yufei Wang, Bolin Li, Guanshui Xie, Weijie Zhou, Changjing Xu, Hu Dingqin, Hao Cai, Qing Lian, Longbin Qiu, Guangye Zhang, Mingwei An, Yang Wang, Bumjoon J. Kim, Xugang Guo, Bin Liu
IF 30.8
Energy & Environmental Science
The incorporation of bowl-shaped corannulene as a solid additive in the active layer enhances organic solar cell efficiency to 20.52%, alongside remarkable thermal stability with a T 85 lifespan of 2007 h.
A bithiophene imide-based polymer donor for alloy-like ternary organic solar cells with over 20.5% efficiency and enhanced stability
Changjing Xu, Jie Yang, Sergio Gámez‐Valenzuela, Jinwoo Lee, Jiaxu Che, Peng Chen, Guodong Zhang, Hu Dingqin, Yufei Wang, Jiaxiang Lv, Zhicheng Zhong, Xihan Chen, Guangye Zhang, Fuwen Zhao, Bumjoon J. Kim, Xugang Guo, Bin Liu
IF 30.8
Energy & Environmental Science
Ternary organic solar cells incorporating a bithiophene imide-based polymer donor in a dual-donor system achieve an outstanding efficiency of 20.52% and excellent thermal stability, retaining over 92.2% performance after 1008 h of heating.
Promoting oxygen evolution in proton exchange membrane water electrolysis: Controlling the oxidation state of electrochemically fabricated iridium-cobalt oxide catalysts
Kyeong‐Rim Yeo, Hoyoung Kim, Liangliang Xu, Seongbeen Kim, Seongbeen Kim, Jong Hyun Jang, Jinwoo Lee, Soo‐Kil Kim, Soo‐Kil Kim
Long-Term Sales Forecasting for Apparel Sales Based on Transformer
Jinwoo Lee, Taeseop Park, Yong‐Ryun Jo, Seung Kyu Jeong, Jae‐Kwan Hwang, Tae-Hyuk Ahn, Hyeon Jong Moon, Hyun Kim, Seoung Bum Kim
Journal of Korean Institute of Industrial Engineers
Sales forecasting plays an important role in decision-making in various industries. Especially, apparel products are highly sensitive to seasons and trends, making accurate sales forecasting essential. While many studies have applied data-driven models to forecast apparel sales, many have overlooked key characteristics of apparel sales data, such as patterns and distortions. In this study, we propose a transformer-based long-term time series forecasting model using timestamps and denoised input with DILATE (PatchTSDD). The proposed method is designed to capture the unique characteristics of apparel sales. By using denoising autoencoder, the model smooths input data and effectively reflects underlying sales trends. Additionally, the inclusion of time stamp information enables the model to capture global temporal patterns. To address sudden fluctuations in sales, the DILATE loss function is applied. We present experimental results using actual sales data from a leading domestic fashion retail company. The results demonstrate that our method outperforms traditional time series forecasting methods, with each component of the model contributes to the overall performance improvement.
Recent Developments in Manganese-Based Materials for Acidic Oxygen Evolution Catalysis
Junhwan Lee, Jinwoo Lee
IF 3.2
Korean Journal of Chemical Engineering
Abstract Water electrolysis is gaining attention as a method for clean hydrogen production, making the development of efficient acidic oxygen evolution reaction (OER) catalysts crucial. MnO 2 , with its diverse crystalline phases, has emerged as a promising candidate due to its stability and catalytic activity under acidic conditions. This review explores MnO 2 -based catalysts, focusing on the role of crystal structure, morphology, valence states, and defect engineering in enhancing performance. The reaction mechanisms of OER, along with the transformation pathways of MnO 2 during the reaction, are examined to provide a deeper understanding of its catalytic behavior. Furthermore, based on these fundamental insights, recent advancements in MnO 2 -based catalysts are reviewed, categorizing them into unsupported catalysts and MnO 2 as a support material, with discussions on noble- and non-noble-metal incorporation strategies for optimizing their practical application in acidic OER.
Breaking the Selectivity Barrier of Single‐Atom Nanozymes Through Out‐of‐Plane Ligand Coordination
Seonhye Park, Kyu In Shim, Phuong Thy Nguyen, Daeeun Choi, Seongbeen Kim, Seung Yeop Yi, Moon Il Kim, Jeong Woo Han, Jinwoo Lee
IF 26.8
Advanced Materials
Peroxidase (POD)-like nanozymes have emerged as effective alternatives to natural enzymes owing to their stability and cost-effectiveness in biosensors. In particular, single-atom nanozymes (SAzymes) featuring Fe-N<sub>4</sub> active sites have attracted significant attention for their high catalytic performance. However, their 2D exposed active sites result in limited reaction selectivity and strong pH dependence, restricting their functionality under neutral conditions. This study introduces Ru-centered SAzymes coordinated out-of-plane with chlorine ligands (RuNC_Cl), achieving monofunctional POD-like activity. RuNC_Cl exhibited remarkable POD-like activity, which is 38-fold greater than its catalase (CAT)-like activity, indicating strong suppression of the competing CAT-like reaction. Density functional theory calculations and Bader charge analysis of RuNC_Cl reveal that repulsive forces preventing secondary H<sub>2</sub>O<sub>2</sub> adsorption contribute to an increased energy barrier for the CAT-like reaction. This selective POD-like activity enables the precise detection of multiple biomarkers through a one-pot cascade reaction under near-neutral conditions. This advancement paves the way for the precise regulation of reaction pathways, enhancing the practicality of nanozymes for biosensing and related applications.
0032 Antigen hotspots reveal novel autoantibodies against XIST ribonucleoproteins in sex-biased autoimmune disease
Jinwoo Lee, Bingyu Yan, Sujaya Srinivasan, Quanming Shi, Diana R. Dou, Srijana Davuluri, Swarna Nandyala, Adrianne Woods, G. Leatherman, Y. Zhao, Roman E. Reggiardo, Manasi Sawant, Hawa Racine Thiam, Ami A. Shah, David Fiorentino, Leland W.K. Chung, Howard Y. Chang
Feasibility of Active and Durable Lattice Oxygen‐Mediated Oxygen Evolution Electrocatalysts in Proton Exchange Membrane Water Electrolyzers Through d0 Metal Ion Incorporation
Yeju Jang, Ho Young Kim, Dongmin Park, Sunghoon Han, Hyunwoo Jun, Jinkyu Park, Seongbeen Kim, Yousung Jung, Chang Hyuck Choi, Jong Hyun Jang, Seonggyu Lee, Jinwoo Lee
IF 12.1
Small
The primary hurdle faced in the practical application of proton exchange membrane water electrolyzer (PEMWE) involves improving the intrinsic kinetic activity of oxygen evolution reaction (OER) electrocatalysts while concurrently enhancing their durability. Although electrocatalysts based on lattice oxygen-mediated mechanism (LOM) have the potential to significantly enhance the activity in OER without being restricted by scaling relationships, they are neglected in acidic electrolytes due to limited durability. In this study, an innovative approach is presented to simultaneously promote the activation of lattice oxygen and improve the durability of LOM-based OER electrocatalysts by incorporating d<sup>0</sup> metal ions into the RuO<sub>2</sub> electrocatalyst. Leveraging the unique electronic properties of the d<sup>0</sup> metal ion, the O 2p band center and Ru-O covalency of the electrocatalyst are successfully engineered, resulting in the change in OER mechanism. Furthermore, in a single cell of PEMWE, the LOM-based electrocatalyst demonstrates outstanding performance, achieving 3.0 A cm<sup>-2</sup> at 1.81 V and maintaining durability for 100 h at 200 mA cm<sup>-2</sup>, surpassing commercial RuO<sub>2</sub>. This innovative strategy challenges the traditional viewpoint that suppressing lattice oxygen activation in OER is essential for enhancing PEMWE durability, offering new perspectives for the development of OER electrocatalysts in acidic electrolytes.
Three-dimensional bowl-shaped solid additive achieves 20.52% efficiency organic solar cells with enhanced thermal stability via curvature-mediated morphology regulation
Zhicheng Zhong, Sergio Gámez‐Valenzuela, Jinwoo Lee, Yufei Wang, Bolin Li, Guanshui Xie, Weijie Zhou, Changjing Xu, Hu Dingqin, Hao Cai, Qing Lian, Longbin Qiu, Guangye Zhang, Mingwei An, Yang Wang, Bumjoon J. Kim, Xugang Guo, Bin Liu
IF 30.8
Energy & Environmental Science
The incorporation of bowl-shaped corannulene as a solid additive in the active layer enhances organic solar cell efficiency to 20.52%, alongside remarkable thermal stability with a T 85 lifespan of 2007 h.
A bithiophene imide-based polymer donor for alloy-like ternary organic solar cells with over 20.5% efficiency and enhanced stability
Changjing Xu, Jie Yang, Sergio Gámez‐Valenzuela, Jinwoo Lee, Jiaxu Che, Peng Chen, Guodong Zhang, Hu Dingqin, Yufei Wang, Jiaxiang Lv, Zhicheng Zhong, Xihan Chen, Guangye Zhang, Fuwen Zhao, Bumjoon J. Kim, Xugang Guo, Bin Liu
IF 30.8
Energy & Environmental Science
Ternary organic solar cells incorporating a bithiophene imide-based polymer donor in a dual-donor system achieve an outstanding efficiency of 20.52% and excellent thermal stability, retaining over 92.2% performance after 1008 h of heating.
