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| 1 | The effect of a blocking layer on the photovoltaic performance in CdS quantum-dot-sensitized solar cells显示文摘 | Jongmin Kim Hongsik Choi Changwoo Nahm Joonhee Moon Chohui Kim Seunghoon Nam Dae-Ryong Jung Byungwoo Park | 2011 | Journal of Power Sources2011，，23： | 1 |
| 2 | Friend Recommendation Method using Physical and Social Context显示文摘 | Joonhee K Sungrim K | 2010 | International Journal of Computer Science and Network Security2010，10，11： | 1 |
| 3 | The effect of a blocking layer on the photovoltaic performance in CdS quantum-dot-sensitized solar cells显示文摘 | Jongmin Kim Hongsik Choi Changwoo Nahm Joonhee Moon Chohui Kim Seunghoon Nam Dae-Ryong Jung Byungwoo Park | 2011 | Journal of Power Sources2011，，23： | 1 |
| 4 | Analysis of isothiocyanatesin newly generated vegetables,baemuchae (台rassicoraphanus) asaffected by growth显示文摘 | SOOYEON L JOONHEE L JONG K K | 2009 | International Journal of Food Science andTechnology2009，44，7： | 1 |
| 5 | Analysis of isothiocyanates in newly generated vegetables, Baemuchae (xBrassicoraphanus) as affected by growth显示文摘 | Lim Sooyeon Lee Joonhee Kim Jong Kee | 2009 | International Journal of Food Science and Technology2009，44，： | 1 |
| 6 | Analysis of isothiocyanates in newly generated vegetables,baemuchae (Brassicoraphanus) as affected by growth显示文摘 | Sooyeon L Joonhee L Jong K K | 2009 | International Journal of Food Science and Technology2009，44，7： | 1 |
| 7 | Superior electrocatalytic negative electrode with tailored nitrogen functional group for vanadium redox flow battery显示文摘Development of electrodes with high electrocatalytic activity and stability is essential for solving problems that still restrict the extensive application of vanadium redox flow batteries(VRFBs).Here,we designed a novel negative electrode with superior electrocatalytic activity by tailoring nitrogen functional groups,such as newly formed nitro and pyridinic-N transformed to pyridonic-N,from the prenitrogen-doped electrode.It was experimentally confirmed that an electrode with pyridonic-N and nitro fuctional groups(tailored nitrogen-doped graphite felt,TNGF) has superior electrocatalytic acivity with enhanced electron and mass transfer.Density functional theory calulations demonstrated the pyridonic-N and nitro functional groups promoted the adsorption,charge transfer,and bond formation with the vanadium species,which is consistent with expermental results.In addition,the V2+/V3+redox reaction mechanism on pyridonic-N and nitro functional groups was estabilised based on density functional theory(DFT) results.When TNGF was applied to a VRFB,it enabled enhanced-electrolyte utilization and energy efficiencies(EE) of 57.9% and 64.6%,respectively,at a current density of 250 mA cm^(-2).These results are 18.6% and 8.9% higher than those of VRFB with electrode containing graphitic-N and pyridinicN groups.Interestingly,TNGF-based VRFB still operated with an EE of 59% at a high current density of300 mA cm^(-2).The TNGF-based VRFB exhibited stable cycling performance without noticeable decay of EE over 450 charge-discharge cycles at a current density of 250 mA cm^(-2).The results of this study suggest that introducing pyridonic-N and nitro groups on the electrode is effective for improving the electrochemical performance of VRFBs. | Min Gu Kang Wook Ahn Joonhee Kang Shin Ae Song Kiyoung Kim Ju Young Woo Yong-Cheol Jeong Bonwook Koo Dae Soo Jung Sung Nam Lim | 2023 | Journal of Energy Chemistry2023，，3： | 0 |
| 8 | A method for large-scale implantation of 3D microdevice ensembles into brain and soft tissue显示文摘Wireless networks of implantable electronic sensors and actuators at the microscale(sub-mm)level are being explored for monitoring and modulation of physiological activity for medical diagnostics and therapeutic purposes.Beyond the requirement of integrating multiple electronic or chemical functions within small device volumes,a key challenge is the development of high-throughput methods for the implantation of large numbers of microdevices into soft tissues with minimal damage.To that end,we have developed a method for high-throughput implantation of~100–200µm size devices,which are here simulated by proxy microparticle ensembles.While generally applicable to subdermal tissue,our main focus and experimental testbed is the implantation of microparticles into the brain.The method deploys a scalable delivery tool composed of a 2-dimensional array of polyethylene glycol-tipped microneedles that confine the microparticle payloads.Upon dissolution of the bioresorbable polyethylene glycol,the supporting array structure is retrieved,and the microparticles remain embedded in the tissue,distributed spatially and geometrically according to the design of the microfabricated delivery tool.We first evaluated the method in an agarose testbed in terms of spatial precision and throughput for up to 1000 passive spherical and planar microparticles acting as proxy devices.We then performed the same evaluations by implanting particles into the rat cortex under acute conditions and assessed the tissue injury produced by our method of implantation under chronic conditions. | Stefan A.Sigurdsson Zeyang Yu Joonhee Lee Arto Nurmikko | 2020 | Microsystems & Nanoengineering2020，6，1： | 0 |
| 9 | Integration of earth-abundant cocatalysts for high-performance photoelectrochemical energy conversion显示文摘Photoelectrochemical(PEC)energy conversion has emerged as a promising and efficient approach to sustainable energy harvesting and storage.By utilizing semiconductor photoelectrodes,PEC devices can harness solar energy and drive electrochemical reactions such as water splitting or carbon dioxide(CO_(2))reduction to generate clean fuels and value-added chemicals.However,PEC energy conversion faces several challenges such as high overpotential,sluggish reaction kinetics,charge carrier recombination,and stability issues,which limit its practical implementation.Recently,significant research has been conducted to improve the overall conversion efficiency of PEC devices.One particularly promising approach is the use of cocatalysts,which involves introducing specific cocatalysts onto the photoelectrode surface to promote charge separation,improve reaction kinetics,and reduce the overpotential,thereby enhancing the overall performance of PEC energy conversion.This review provides a comprehensive overview of the recent developments in the earth-abundant cocatalysts for PEC water splitting and CO_(2) reduction.The main earth-abundant catalysts for the PEC water splitting include transition-metal dichalcogenide(TMD)-based materials,metal phosphides/carbides,and metal oxides/hydroxides.Meanwhile,PEC-CO_(2)RR was divided into C_(1) and C_(2+)based on the final product since various products could be produced,focusing on diverse earth-abundant materials-based cocatalysts.In addition,we provide and highlight key advancements achieved in the very recent reports on novel PEC system design engineering with cocatalysts.Finally,the current problems associated with PEC systems are discussed along with a suggested direction to overcome these obstacles. | Joonhee Ma Sang Hyun Ahn Soo Young Kim | 2024 | Journal of Energy Chemistry2024，88，1： | 0 |
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