Interfacial Control between Polymeric Binder and Ni-rich Cathode of Lithium-ion Battery via Plasma-assisted Mechanochemistry

고혜인,손정곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2

LiNi0.8Co0.1Mn0.1O2 (NCM 811) with high practical capacity and low cost is a promising material for development of lithium ion batteries. However, NCM811 have critical drawbacks, including serious capacity degradation during long-term cycling, thermal instability. In this work, we applied the plasma-assisted mechanochemistry (PMC) to increase greatly the interfacial affinity between NCM811 and polymeric binder PVDF by introducing diverse functional groups to the materials with plasma treatment (O2₂, N₂, Ar) with mechanical force. The chemically functionalized PVDF by oxygen plasma in the PMC process forms intimately coating layer and ensures fluent ion conduction to avoid the blocking Li<SUP>+</SUP> transport path on surface of the NCM811 particles during the charge/discharge cycle. This approach easily enhanced the electrochemical performances with conventional electrode materials alone through the plasma-assisted composite process that allows simple control of the surface properties of NCM811.

아동학대 예방교육 프로그램이 신고의도에 미치는 효과 - 개발 프로그램과 기존 프로그램 비교 -

고혜인,김성봉,조지연 한국문화융합학회 2022 문화와 융합 Vol.44 No.5

The purpose of this study is to confirm the effect of the child abuse prevention education program on the promotion of the intention to report child abuse. Subjects of experimental group watched VOD with child abuse prevention instruction developed by this researcher in 2019, and those in contrast group watched VOD with child abuse prevention instruction spread by Central- Child Protection Agency in 2016. All advance tests of both groups were taken from the 17th to 30th of August in 2019 and participants joining in each others' program were asked to participate in this program education and take the post-test after watching VODs for 10 whole days (from September 27th to October 6th in 2019). I used SPSS 18.0 for analyzing data, and three-way mixed ANOVA. According to this study, the experimental group offered child-abuse prevention instruction developed by this researcher showed that all the scores of intention to report child abuse rose meaningfully higher toward both the cases that can be recognized strongly and weakly to be child-abuse than the contrast group trained with existing child-abuse prevention instruction. and I confirmed that this program has an effect on child abuse prevention instruction through on-line.

아동학대 신고의도에 영향을 미치는 요인 탐색: 학대유형과 성별의 상호작용, 아동학대 신고에 대한 해석수준

고혜인,김성봉 한국감성과학회 2019 감성과학 Vol.22 No.2

This study explored measures to promote the reporting of child abuse, instances of which are increasing year after year. To this end, 16 cases of child abuse, encompassing four instances of each of the four types of child abuse (physical, neglect, sexual, and emotional), were presented to participants to examine whether the perception of each type of abuse affected the degree of its perception as a case of child abuse. Next, the effects of the four types of child abuse on the intention to report child abuse (low vs. high) were investigated in terms of gender (male vs. female) and the construal level. The results revealed that the participants' differed in the intent to report child abuse, depending on varied factors despite the fact that they perceived all cases as child abuse. In particular, no difference was found between men and women in their intent to report child abuse for cases of physical abuse and neglect. However, women exhibited a stronger intent than men to report sexual and emotional abuse. Further, the intention of reporting child abuse was stronger at the high construal level (related to why child abuse must be reported) than it was at the low construal level (concerned with what to do about child abuse). The practical implications of this study include the provision of educational content, the creation of publicity materials that place differing emphases on sex, and the application of low construal level education for reporting child abuse. 본 연구는 매년 발생 건수가 증가하고 있는 아동학대 신고를 증진시킬 수 있는 방안을 탐색하기 위해 이루어졌다. 이를 위해 아동학대 네 가지 유형별(신체 vs. 방임 vs. 성 vs. 정서)로 4개 씩 총 16개의 아동학대 사례를 구성한 후, 각 유형별로 아동학대라고 지각하는 수준이 다른지를 확인하다. 이어서 아동학대 유형별(신체 vs. 방임 vs. 성 vs. 정서), 성별(남 vs. 여), 그리고 아동학대 신고에 대한 해석수준( 저 수준 vs. 고 수준)이 아동학대 신고의도에 미ㅣㅊ는 효과도 검증해 보았따. 결과적으로 참가자들은 아동학대의 모든 유형을 아동학대라고 지각하였음에도 불구하고, 아동학대 신고의도에서는 요인별로 차이를 보였다. 구체적으로 신체적 학대와 방임에 대한 아동학대 신고의도는 남녀간 차이가 없었지만, 성적학대와 정서적 학대에서는 여성의 신고의도가 남성의 신고의도보다 강했다. 또한 아동학대 신고를 왜 해야 하는지와 관련된 고수준 해석을 할 때보다 아동학대를 어떻게 해야 하는지 관련된 저수준 해석을 할 때가 아동학대 신고의도가 강했다. 본 연구는 성별에 따라 공조점이 다른 아동학대 교육 콘텐츠 및 홍보물 제작, 아동학대 신고에 대한 저수준 해석을 적용한 교육에 시사점을 준다.

조절초점과 득실 정보의 상호작용이 아동학대 신고의도에 미치는 효과

고혜인,김성봉 계명대학교 사회과학연구소 2019 한국사회과학연구 Vol.38 No.2

This study aims to explore the effects of individuals’ regulatory focus (prevention vs. promotion) tendency (Study 1) and regulatory focus priming (Study 2) on the intention to report child abuse. Moreover, based on the findings of previous studies that prevention-focused people are motivated by avoiding loss and promotion-focused people are motivated by obtaining meaning and reward, this study presented a penalty rule about people who did not report child abuse, which can stimulate prevention-focused people, and thank-you letter to people who regained happiness by reporting child abuse, which can stimulate promotion-focused people, and observed how the relevant information interacts with regulatory focus. As a result, prevention-focused people or those primed by such tendency showed higher intention to report child abuse when provided with information about the penalty rule (vs. thank-you letter), whereas promotion-focused people or those primed by such tendency showed higher intention to report child abuse when provided with letters of appreciation (vs. penalty rule), thereby showing a binary interaction. This study provides implications for making promotional materials to report child abuse by applying regulatory focus, making child abuse prevention campaign videos, creating training materials for those obligated to report child abuse, and providing intrinsic motivation to report child abuse. 본 연구는 개인의 조절초점(예방 vs. 촉진) 성향(연구 1)과 조절초점 점화(연구 2)가 아동학대 신고의도에 미치는 효과를 탐색하기 위해 이루어졌다. 또한 예방 초점인 사람은 손실을 피하는 것에 동기 부여되고, 촉진 초점인 사람은 의미와 보람을 얻는 것에 동기 부여된다는 선행 연구에 기초하여 예방초점을 자극할 수 있는 아동학대 미신고자 벌금규정 정보와 촉진 초점을 자극할 수 있는 아동학대 신고에 따라 행복을 되찾은 사람의 감사편지 정보를 제시한 후, 해당 정보와 조절초점이 어떻게 상호작용하는 지 관찰해 보았다. 결과적으로 예방 초점 성향의 사람 혹은 이에 점화된 사람은 벌금 규정(vs. 감사편지) 정보를 제시할 때 더 높은 아동학대 신고의도를 보였으나, 촉진 초점 성향의 사람 혹은 이에 점화된 사람은 감사편지(vs. 벌금 규정) 정보를 제시할 때 더 높은 아동학대 신고의도를 보이는 이원상호작용을 관찰할 수 있었다. 본 연구는 조절초점을 적용한 아동학대 신고 홍보물 제작, 아동학대 예방 캠페인 영상 제작, 아동학대 신고의무자 교육콘텐츠 제작, 아동학대 신고에 대한 내재적 동기 부여에 시사점을 준다.

Functionalized Ni-rich Cathode and Binder of Lithium Ion Battery via Plasma-assisted Mechanochemistry

고혜인,손정곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1

Ni-rich cathode materials due to high practical capacity and low cost are promising materials for commercialization. However, Ni-rich cathode materials have some difficulties including serious capacity degradation during long-term cycling, thermal instability. In this work, we used the plasma-assisted mechanochemistry (PMC) process to overcome these disadvantages and enhanced interfacial interactions between NCM811 microparticles and PVDF binder. The PMC process creates a covalent bond by applying mechanical shear and various plasma treatment, which greatly increases the interfacial affinity between NCM811 and PVDF. The frictions with plasma treatment were formed sturdy interactions between NCM811 particles and PVDF. The PVDF fully and thinly covered the NCM811 surface to maintain their structures and maximize the dispersity of the electrode materials. This simple approach enhanced the electrochemical performances as well as offering easy control of the surface characteristics of NCM

1P-220 The thermal property of silica aerogels composited rigid polyurethane foam

고혜인,홍창국 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.0

아동학대 신고의무, 교육, 그리고 실행의도의 상호작용이 아동학대 신고의도에 미치는 효과

고혜인,김성봉 충남대학교 사회과학연구소 2019 사회과학연구 Vol.30 No.3

This study examines the effect of mandatory reporting of child abuse and education on reporting child abuse on the intent to report child abuse. It also investigates the effect of the implementation intention for child abuse reporting on the intent to report child abuse. A total of 300 Koreans participated in this study. The respondents were randomly assigned to two groups, with half being assigned to the condition with implementation intention to report child abuse and the remaining half to the condition without it. After the participants without the implementation intention for reporting of child abuse declared, “I will report a situation where I suspect child abuse to 112 (112 is a crime report number in South Korea.)” their intention to report child abuse was evaluated in 16 cases on a seven-point scale. After the participants with implementation intention to report child abuse declared, “If I witness a situation where I suspect child abuse, then I will report it to 112,” their intent to report child abuse was evaluated. As a result, those obligated to report child abuse showed a stronger intent to report child abuse than those who were not obligated. Those who received education on reporting child abuse showed a stronger intent to report child abuse than those who did not. Those who declared their intent to implement reporting of child abuse showed a stronger intent to report child abuse than those who did not. In addition, we observed an interaction where the effect of the implementation intention to report child abuse was stronger among those who were not obligated to report it and those who received education. Receiving education led to a higher intent to report child abuse among those who were obligated to report it, but the opposite effect was observed among those who were not obligated to report it, and the intent to report decreased after receiving education. This study has implications for developing child-abuse-related promotional materials, advertising its importance, creating contents for education on reporting child abuse, and selecting subjects for education.

Study on rigid polyurethane foam composited with silica aerogels

고혜인,홍창국 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.1

2P-234 Preparation of polyurethane foam composited with silica aerogels

고혜인,홍창국,안영수,이상은,허소연 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

In this study, the rigid polyurethane foam (PU foam) composited with silica aerogels were prepared by compositing method using homogenizer. Silica aerogels are known as the mesoporous material with the high porosity and the low thermal conductivity. Silica aerogels were prepared with IPA, HCl, TMCS and water glass via the sol-gel method. Silica aerogels dispersed polyol solution and MDI were used to prepare the polyurethane foams. The particle size and structure were analyzed by HR-TEM and FE-SEM, and the dispersivity of silica aerogels in PU foam were characterized with FE-SEM and EDS.

Study on rigid polyurethane foam composited with silica aerogel

고혜인,홍창국 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0

Silica aerogels are known as the mesoporous material with the high porosity and the low thermal conductivity. Rigid polyurethane foam is insulation material widely used due to its good mechanical strength and workability. In this study, the rigid polyurethane foam (PU foam) composited with silica aerogels were prepared by compositing method using homogenizer. The change of polyurethane foam with the content of silica aerogels was observed. Silica aerogels were prepared with IPA, HCl, TMCS and water glass via the sol-gel method. Silica aerogels dispersed polyol solution and MDI were used to prepare the polyurethane foams. The particle size and structure were analyzed by HR-TEM and FE-SEM, and the dispersivity of silica aerogels in PU foam were characterized with FE-SEM and EDS.