Browsing by Author "Choi, Jang Wook"
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Anomalous manganese activation of a pyrophosphate cathode in sodium ion batteries: A combined experimental and theoretical study
Park, Chan Sun; Kim, Heejin; Shakoor, Rana A.; Yang, Eunjeong; Lim, Soo Yeon; Kahraman, Ramazan; Jung, Yousung; Choi, Jang Wook... more authors ... less authors (2013 , Article)Sodium ion batteries (SIBs) have many advantages such as the low price and abundance of sodium raw materials that are suitable for large-scale energy storage applications. Herein, we report an Mn-based pyrophosphate, ... -
Controlled Prelithiation of Silicon Monoxide for High Performance Lithium-Ion Rechargeable Full Cells
Kim, Hye Jin; Choi, Sunghun; Lee, Seung Jong; Seo, Myung Won; Lee, Jae Goo; Deniz, Erhan; Lee, Yong Ju; Kim, Eun Kyung; Choi, Jang Wook... more authors ... less authors ( American Chemical Society , 2016 , Article)Despite the recent considerable progress, the reversibility and cycle life of silicon anodes in lithium-ion batteries are yet to be improved further to meet the commercial standards. The current major industry, instead, ... -
Delicate Structural Control of Si-SiOx-C Composite via High-Speed Spray Pyrolysis for Li-Ion Battery Anodes
Lee, Seung Jong; Kim, Hye Jin; Hwang, Tae Hoon; Choi, Sunghun; Park, Sung Hyeon; Deniz, Erhan; Jung, Dae Soo; Choi, Jang Wook... more authors ... less authors ( American Chemical Society , 2017 , Article)Despite the high theoretical capacity, silicon (Si) anodes in lithium-ion batteries have difficulty in meeting the commercial standards in various aspects. In particular, the huge volume change of Si makes it very challenging ... -
Hierarchical porous carbon by ultrasonic spray pyrolysis yields stable cycling in lithium-sulfur battery
Jung, Dae Soo; Hwang, Tae Hoon; Lee, Ji Hoon; Koo, Hye Young; Shakoor, Rana A.; Kahraman, Ramazan; Jo, Yong Nam; Park, Min-Sik; Choi, Jang Wook... more authors ... less authors ( American Chemical Society , 2014 , Article)Utilizing the unparalleled theoretical capacity of sulfur reaching 1675 mAh/g, lithium-sulfur (Li-S) batteries have been counted as promising enablers of future lithium ion battery (LIB) applications requiring high energy ... -
Poreless Separator and Electrolyte Additive for Lithium-Sulfur Batteries with High Areal Energy Densities
Kim, Joo-Seong; Yoo, Dong-Joo; Min, Jaeyun; Shakoor, Rana A.; Kahraman, Ramazan; Choi, Jang Wook... more authors ... less authors ( WILEY-VCH Verlag , 2015 , Article)Despite the attractive theoretical capacity of sulfur over 1600 mA h g−1, lithium–sulfur (Li–S) batteries suffer from insufficient cycle lives mainly due to fatal polysulfide dissolution. This chronic drawback becomes ... -
Stabilized Octahedral Frameworks in Layered Double Hydroxides by Solid-Solution Mixing of Transition Metals
Lee, Hyeon Jeong; Lim, Soo Yeon; Chae, Keun Hwa; Park, Sung Hyeon; Chung, Kyung Yoon; Deniz, Erhan; Choi, Jang Wook... more authors ... less authors ( Wiley-VCH Verlag , 2017 , Article)Pseudocapacitors have received considerable attention, as they possess advantages of both rechargeable batteries and electric double layer capacitors. Among various active materials for pseudocapacitors, α-layered double ...