Article
Chemistry, Multidisciplinary
Ahreum Choi, Taewon Kim, Min-Ho Kim, Seok Woo Lee, Young Hwa Jung, Hyun-Wook Lee
Summary: In this study, the authors demonstrate how the fast reaction rate activates charge redistribution in manganese hexacyanomanganates, which helps alleviate the strong Jahn-Teller effect of high-spin Mn(III) by solving the unequal number of electrons in e(g) orbitals. As a result, the dissolution of Mn is effectively suppressed, leading to improved long-term cyclability in an aqueous electrolyte.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Seoungkyun Kim, Dong Hee Kim, Jinhwan Cho, Jaeyun Kim, Inchan Kwon
Summary: Researchers have developed a booster that can deliver drugs to specific blood vessels, using a polymeric hydrogel made up of multiple monomers as the building blocks.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiheon Kim, Seong-Jun Kim, Euiyeon Jung, Dong Hyeon Mok, Vinod K. Paidi, Jaewoo Lee, Hyeon Seok Lee, Yunseo Jeoun, Wonjae Ko, Heejong Shin, Byoung-Hoon Lee, Shin-Yeong Kim, Hyunjoong Kim, Ji Hwan Kim, Sung-Pyo Cho, Kug-Seung Lee, Seoin Back, Seung-Ho Yu, Yung-Eun Sung, Taeghwan Hyeon
Summary: In this study, the authors investigate the structural understanding of uniform-sized spinel-type MMO nanoparticles and their contribution to improved oxygen reduction reaction (ORR) activity.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhiqian Cao, Haibo Hu, Derek Ho
Summary: Micro-redoxcapacitors, a new device category, effectively resolve the dilemma between batteries and capacitors, providing high capacity and rate performance simultaneously.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Matthias Rebber, Malte Trommler, Irina Lokteva, Samanehalsadat Ehteram, Andreas Schropp, Sandra Koenig, Michael Froeba, Dorota Koziej
Summary: In this article, TiO2 nanoparticle-based gels and plasmonic Au nanorods are used as inks for 3D printing, enabling the production of multifunctional aerogels with control over nano-, micro-, and macroscopic length scales.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Meng Xie, Hai Xu, YiXuan Wang, Helin Pan, Dengle Duan, Bo Niu, Donghui Long, Yayun Zhang
Summary: Metal oxides can convert waste plastics into hydrogen fuel by microwave pyrolysis, addressing global ecological pollution. However, agglomeration and poor porosity of metal oxides restrict further applications. In this study, two-dimensional metal oxide nanosheets with a porous network were developed for recycling high-purity hydrogen and carbon nanotubes from waste plastics. The porous structure significantly improved the growing space of carbon nanotubes and enhanced wave absorption, resulting in high H2 selectivity and yield, as well as high-value carbon nanotubes. The reaction mechanism for microwave-induced catalytic pyrolysis was proposed. This research offers new insights into waste plastic recovery using metal oxides through microwave pyrolysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Geonwoo Kang, Minkyung Kim, Huisuk Yang, Jiwoo Shin, Jeeho Sim, Hyeri Ahn, Mingyu Jang, Youseong Kim, Hye Su Min, Hyungil Jung
Summary: In this article, a novel applicator is developed to efficiently insert dissolving microneedle patches into the skin with optimized force and velocity. This applicator is cost-competitive and easy to use with thumb-force operation. The study shows that the microneedle and applicator system can generate significantly higher antibody levels compared to intramuscular injection when using a model antigen.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Bofeng Li, Qi Cao, Ya Liu, Yukuo Sun, Xinlong Ma, Xiaoguang Duan, Chunmao Chen, Yuxian Wang
Summary: In this study, porous activated carbons (PACs) with abundant built-in meso/macroporous channels were synthesized using asphalt powder and KOH as precursors. Polyaniline (PANI) was in situ grown on the PAC surface to form PAC/PANI composites, which exhibited synergistic effects between electrical double layer (EDL) adsorption and pseudocapacitive deionization for enhanced capacitive deionization (CDI) desalination capacity.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Energy & Fuels
Ruthradharshini Murugavel, Ali A. Rownaghi, Fateme Rezaei
Summary: This study investigated the effect of light alkali metal functionalization on the H-2 storage performance of carbon adsorbents. The results showed that Li-doped carbon materials achieved a gravimetric uptake of 2.8 wt% at room temperature and 100 bar pressure.
Article
Energy & Fuels
Suhyeon Hwang, Ji Zhou, Tang Tang, Karel Goossens, Christopher W. Bielawski, Jianxin Geng
Summary: Porous carbons derived from agarose and potassium oxalate show tunable pore structures and high electrochemical performance in supercapacitors, with predictable changes in porosity and electrochemical properties as the quantity of potassium oxalate added increases.
Article
Nanoscience & Nanotechnology
Yuxin He, Dongyang Wu, Mengyang Zhou, Yanjun Zheng, Tengfei Wang, Chang Lu, Li Zhang, Hu Liu, Chuntai Liu
Summary: A high-performance flexible strain sensor based on CNT-GR/PDMS nanocomposites was designed and prepared. The sensor exhibited superior gauge factors, ultralow detection limit, fast response time, good stability and durability, and frequency-/strain-dependent sensing performances. It showed wide application prospects in smart wearable devices for detecting various human motions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Zuqiao Ou, Zhao An, Zhong Ma, Nan Li, Yinuo Han, Ganjun Yang, Qike Jiang, Qiang Chen, Wenling Chu, Suli Wang, Tongwen Yu, Weishen Yang
Summary: By encaging platinum single atoms and ultrafine nanoparticles into periodic nanopores of three-dimensional graphene-like architecture carbon, a cathode configuration with an ultralow platinum loading exhibits superior mass activity and stability, contributing to the cost reduction of proton-exchange membrane fuel cells.
Article
Chemistry, Physical
Ning An, Zhen Guo, Jiao Xin, Yuanyuan He, Kefeng Xie, Daming Sun, Xiuyan Dong, Zhongai Hu
Summary: This study demonstrates the fabrication of a redox-active covalent organic frameworks (COFs)/graphene composite aerogel electrode, which efficiently addresses the low electrical conductivity and sluggish electron transfer issues within the organic framework, showing high specific capacitance and fast kinetics. Moreover, the binder-free redox-active COFs/graphene composite aerogel and pure graphene aerogel are assembled into an asymmetric supercapacitor, achieving excellent performance in energy density and power density.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Jun Zhou, Yuying Zheng, Dongyang Chen
Summary: By using a reduction-reaction-induced self-assembly process, a new type of three-dimensional porous aerogel with partially unzipped multiwalled carbon nanotubes inserted into graphene nanosheets was prepared. The aerogels exhibited excellent electrical contact, prevented restacking of graphene nanosheets, and provided large channels for charge transfer, resulting in promising electrode materials for supercapacitor applications.
Article
Nanoscience & Nanotechnology
Haili Cai, Lining Fan, Wei Chen, Hui Zheng, Xiaoxiao Guo, Peng Zheng, Liang Zheng, Yang Zhang
Summary: Iron carbide-functionalized porous carbon nano-composites are potential anode materials for lithium-ion batteries due to their good electrocatalytic performance, stable chemical properties, and reasonable cost-effectiveness. In this study, a Fe3C-functionalized 3D nitrogen-doped porous graphene nanocomposite (Fe3C/NPG) was synthesized using silk fibroin coordination with Fe ions. The Fe3C/NPG composite exhibited a distinct 3D porous structure, high doping levels of nitrogen atoms (approximately 10%), and well-dispersed Fe3C nanoparticles with strong interfacial bonding. It showed excellent cycling stability and rate performance as a LIB anode material at certain heating temperature and Fe ion concentration.
ACS APPLIED NANO MATERIALS
(2023)