Open positions

○ Open position for a postdoc (2022.07-):  Highly motivated postdoc candidate with strong experimental
​     skills and solid background in 'N2 and NOx electrochemical reduction and solar desalination' 
​     (send an email to Prof. Cho, insuncho@ajou.ac.kr)
​
○ Open position for a postdoc (Anytime):  Theoretical calculations (DFT, MD, etc) of electrocatalysis  
​    (send an email to Prof. Cho, insuncho@ajou.ac.kr)
​
○ 박사 과정 또는 석/박사 통합과정 대학원생 모집 (분야: 화염기반 나노소재 합성, 폐기물-화학연료전환 촉매 개발, CO2-      화학연료전환 전기촉매 개발, 태양광-수소 광전극 개발, 해수-담수화 솔라스펀지 개발).
    관심있는 분들은 이메일 (insuncho@ajou.ac.kr)로 연락바랍니다.

○ Now we seek highly qualified and motivated PhD or combined MS-PhD students to work in       
    electrocatalysis (NOxRR, N2RR, CO2RR, HER, OER), Synthesis of nanomaterials, and Solar-Desalination! 
    Please feel free to contact to Prof. In Sun Cho (insuncho@ajou.ac.kr)!"​

Research update

All-oxides Tandem PEC Cell with STH 1%

  • Synthesis of CuO sharp-edged nanoflake array (SNA) via two-step oriented attachment process.
  • Dramatic reduction of a light reflection loss at visible-to-near infrared region.
  • Improved charge transport and transfer properties than the  nanoparticle-based film counterparts.
  • Optimized CuO SNA exhibits a record photocurrent density (∼6.3 mA/cm2 at 0.0 V vs. RHE)
  • Demonstration of bias-free solar water-splitting with TiO2 branched-nanorod-array photoanode (STH ∼ 1%)
  • published in Applied Surface Science  ​(IF: 6.707, JCR: 2.381%, 2022.02.09)

High Entropy Alloy of CoCuFeNiMn for Electrocatalytic water splitting

  • The first time, high-entropy-alloy (HEA) introduced as a model bifunctional electrocatalyst in neutral-pH water splitting
  • Hall voltage measurement revealed 68 times higher electrical conductivity of HEA than mixed metal powders
  • At neutral-pH, the most favorable reaction kinetics, promising activity, and stability was obtained at a higher current density
  • HEA electrocatalyst, CuCoNiFeMn, can efficiently split H2O to H2 in pH-universal media
  • published in Journal of Materials Chemistry A  ​(IF: 12.732, JCR: 6.579%)

Activation of spinel CuAl2O4 for solar water-splitting

● Facile solution synthesis of spinel CuAl2O4 (CAO) film with controlled porosity for the first time.
● Development of an effective solution activation method to incorporate Li+ into the CAO.
● Simultaneous improvement of light absorption, charge transport and transfer properties via the Li+ activation.
● Demonstration of a record photocurrent density of −5.1 mA/cm2 by coupling CuO underlayer.

published in Journal of Catalysis (IF:9.920, JCR: 10.140%)

Sol-gel synthesis of Bulky-crystalline
CuBi2O4 photocathode

● Development of evaporation-decomposition-controlled synthesis method for spinel CuBi2O4
● Pre-annealing process has a vital impact on grain size, film coverage and uniformity
● Successful synthesis of bulky crystalline CuBi2O4 photocathode with enhanced photocurrent & stability
● Demonstration of a record photocurrent density (-3.5 mA/cm2) via coupling with CuO underlayer

published in Nano Energy (IF:16.602, JCR: 4.299%)
New ETL materials for PSCs
"Energy-level engineering of the electron transporting layer for improving open-circuit voltage in dye and perovskite-based solar cells"
​published in Energy & Environ. Sci.  (IF:33.250, JCR ranking: 0.2%)

LAB. News

2022.11.06 - 09.
  • ENGE2022 Conference, Ramada hotel, Jeju island. 
2022.08.30.
  • Nano enc workshop with undergraduate intern students. Good job!!
2022.08.22.
  • Yoo Jae and Min Je, congratulations on your master's degree!!!
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2022.01.15.
  • Welcome 'Seo Yeong and Tak Hyun' joining our group as new MS students.

2021

2020.05.12-15. Attending Conference (2021 KSIEC Spring Meeting, BEXCO, Pusan, South Korea)

2022

2020.06.23. Celebration lunch for Dr.Siva's proposal selection (NRF funding, 2.1억/3년) and son birth!
2020.06.30.
  • Congratulations to Sung Won & Dong Hyun on their paper publication (Applied Surface Science, IF: 6.182, JCR 2.38%)
  • Congratulations to Sung Won on his paper publication (Journal of Catalysis, IF: 7.888, JCR 4.55%)

2020

2020.03.01.
  • Welcome 'Dr. Arumugam Sivanantham' joining our group as a postdoc.
  • Welcome 'Qu Li' joining our group as a new Ph.D. student.
  • Welcome 'Min Jae Kim' joining our group as a new M.S. student.
2019
2019.07.04.
Prof. Cho has been appointed as an editorial board member in an international journal, 'Chemistry (ISSN 2624-8549, a peer-reviewed open access journal of chemistry published quarterly online by MDPI).
2019.01.01.
Prof. Cho has been appointed as an editorial board member in an international journal, 'Applied Sciences' (ISSN 2076-3417; CODEN: ASPCC7, IF=2.217) is an international peer-reviewed open access journal on all aspects of applied natural sciences published semi-monthly online by MDPI.
2016
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Collaboration paper on solar water-splitting is selected as a main cover image. (2016.02.18).
2015
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Congratulations to Jin Woon & Hae Yeon for the first place prize in '2015-Creative Materials Selection & Capstone Design competition' (2015. 12. 03).
In Sun Cho, associate professor
Materials Science & Engineering, Ajou University
Worldcup-ro 206, Yeongtong-gu, Suwon, 16499, South Korea
Phone: +82-31-219-2468, Mobile: +82-10-7203-0401, FAX: +82-31-219-1613
Email: cisinsnu@gmail.com, insuncho@ajou.ac.kr