Article
Electrochemistry
Jun Wei Yap, Tianyang Wang, Hanna Cho, Jung-Hyun Kim
Summary: This study comprehensively analyzes the impact of carbon nanotubes (CNT) and carbon nanofibers (CNF) composition on the performance of nano-Si anodes in lithium-ion batteries. The addition of CNT and CNF with high aspect ratios can establish a robust electronic conduction pathway in Si anodes, improving capacity retention and fast-charging capabilities. Electrochemical analysis shows that 5% - 10% CNT and CNF effectively suppress contact impedances growths in Si anodes. Precise control of the composition of CNT and CNF is crucial for achieving good electrode morphology and electrochemical properties for nano-Si anodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Byeong-Il Yoo, Han-Min Kim, Min-Jae Choi, Jung-Keun Yoo
Summary: This study employs a novel combination of conductive additives to effectively suppress the volume expansion of silicon in lithium-ion batteries (LIBs). By introducing single-walled carbon nanotubes (SWCNTs) as a conductive additive, stable electrochemical operation and prevention of volume expansion were achieved. The combination of carbon black (CB) and SWCNTs also showed a synergetic effect, leading to even better results.
Article
Chemistry, Multidisciplinary
Ziying He, Zhexi Xiao, Hongjie Yue, Yaxin Jiang, Mingyu Zhao, Yukang Zhu, Chunhui Yu, Zhenxing Zhu, Feng Lu, Hairong Jiang, Chenxi Zhang, Fei Wei
Summary: Silicon-based anodes with single-walled carbon nanotubes (SWCNTs) network exhibit higher initial discharge capacity, higher initial Coulombic efficiency, exceptional cyclic stability, and higher lithium-ion diffusion coefficient compared to those with multiwalled carbon nanotubes (MWCNTs) network. The underlying mechanism behind this difference is elucidated through in situ Raman spectroscopy and theoretical analysis. It is determined that the more flexible SWCNTs and their stronger van der Waals forces enable better contact between SiOx@C and SWCNTs under large stress during cycling.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hye-Jin Lee, Nan Zhang, Mohamed A. Ganzoury, Yichen Wu, Charles-Francois de Lannoy
Summary: This study demonstrates the simultaneous chlorine removal and oxidation of organic compounds during filtration using an electrochemically assisted electrically conductive carbon nanotube (CNT) membrane. The efficacy of chlorine removal by CNT membranes depends on the mass of CNTs within the membranes and the applied pressure.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Hee-Joong Kim, Jin-Sub Lim, Duk-Rye Chang
Summary: The research found that adding 3.0% of SWCNTs is beneficial for the performance of the composite cathode in all-solid-state batteries. After 50 cycles at 60 degrees Celsius, the composite cathode showed good capacity retention and excellent rate capability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Byung Hoon Park, Hanmo Yang, Yong Gil Choi, Kwang-Bum Kim
Summary: A Si/reduced graphene oxide (rGO)/C microsphere composite was reported, with sucrose-derived carbon as a carbon anchor and link to reinforce the composite structure. The Si/rGO/C composite exhibited maintained electron conduction pathways, high initial discharge capacity, superior cyclability, and high-rate capability.
Article
Chemistry, Physical
Mochen Li, Kotaro Yasui, Hisashi Sugime, Suguru Noda
Summary: This study highlights the importance of maintaining a highly reductive atmosphere during annealing to achieve active catalyst particles with a higher number density and longer lifetime. Fe particles can be partially oxidized during annealing in a mildly oxidative CO2 environment, affecting the bulk diffusion of Fe into the AlOx layer. On the other hand, Fe remains active for SWCNT growth when reduced sufficiently in H-2 without CO2.
Article
Nanoscience & Nanotechnology
Zhijun Chen, Yutao Cui, Lirong Liang, Hanfu Wang, Wei Xu, Qichun Zhang, Guangming Chen
Summary: This study prepares a flexible composite film by covalently bonding single-walled carbon nanotubes (SWCNTs) with porous metal-organic frameworks (MOFs), demonstrating good flexibility and p-type thermoelectric characteristics. Furthermore, a flexible thermoelectric device connected by multiple films in series generates high open-circuit voltage and maximum power.
MATERIALS TODAY NANO
(2022)
Article
Chemistry, Physical
Dongju Lee, Seo Gyun Kim, Junghwan Kim, Namryeol Kim, Ki-Hyun Ryu, Dae-Yoon Kim, Nam Dong Kim, Jun Yeon Hwang, Yuanzhe Piao, Sangmin An, Dong Su Lee, Bon-Cheol Ku
Summary: By adding polyaniline (PANI) to carbon nanotube (CNT) fibers, the specific electrical conductivity and mechanical properties of the fibers are significantly improved. PANI enhances CNT orientation, decreases voids, and dopes the fibers, resulting in better electron flow. These findings provide insights into research on CNT fibers and their applications.
Article
Engineering, Chemical
Jeong Hoon Lee, Eun-Tae Yun, So-Young Ham, Han-Shin Kim, Peng-Fei Sun, Hee-Deung Park
Summary: Biofouling is a significant issue in membrane-based filtration processes. Conductive membranes, such as carbon nanotube/graphene membranes, show promise in fouling mitigation. This study demonstrates that a high-stability CNT/graphene membrane can achieve efficient water flux recovery by combining physical and chemical/biological cleaning methods.
Article
Chemistry, Physical
Jinfeng Zheng, Xiao Lian, Mingzai Wu, Fangcai Zheng, Yuanhao Gao, Helin Niu
Summary: In this study, Ni3S4 quantum dots composite graphene/carbon nanotube composites were prepared using a one-step method. The addition of G/CNTs improved electron transport and enhanced the electrochemical performance of the electrode material significantly, increasing specific capacitance and rate capability. The asymmetric supercapacitor assembled with Ni3S4 QDs@G/CNTs electrodes achieved an energy density of 50 Wh kg(-1), showing great potential for improving the electrochemical performance of supercapacitor electrode materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Changshin Jo, Bo Wen, Hyebin Jeong, Sul Ki Park, Yeonguk Son, Michael De Volder
Summary: In order to increase the energy density of lithium-ion batteries (LIBs), researchers have been actively pursuing high-capacity anodes that can alloy with Li ions at a low voltage against Li/Li+. Si has been extensively studied due to its high specific capacity and cost efficiency; however, Ge is an interesting alternative due to its higher density and better charge storage per volume. Ge also has higher ionic diffusivity and electronic conductivity compared to Si. In this work, spinodal decomposition is used to create secondary particles comprising of Ge nanoparticles embedded in a carbon matrix, resulting in specific capacities of over 1100 mAh g-1 and a capacity retention of 91.8% after 100 cycles.
Article
Materials Science, Multidisciplinary
Falihah Balqis, Calvin Eldona, Basuki Tri Laksono, Quratul Aini, Faiq Haidar Hamid, Hutomo Suryo Wasisto, Afriyanti Sumboja
Summary: Silicon anode has a high theoretical specific capacity, but its suitability in lithium-ion batteries is limited by problems associated with volume changes and low electrical conductivity. Conductive polymer frameworks have emerged as a solution to enhance anode performance by facilitating charge transport and regulating volume changes. This review provides a detailed summary of the features of conductive polymer frameworks in silicon anodes and discusses the current advancements of widely used conductive polymers. The performance evaluation of silicon anodes with different conductive polymers is also presented, along with perspectives on future challenges.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Heather G. Wise, Hidemasa Takana, Anthony B. Dichiara
Summary: The continuous flow assembly of colloidal nanoparticles from aqueous suspensions into macroscopic materials using a field-assisted double flow focusing system allows the integration of renewable cellulose nanofibrils (CNFs) with single-walled carbon nanotubes (SWNTs) to produce high-performance functional filament nanocomposites. The nanoscale orientational anisotropy of the CNFs and SWNTs is achieved by an alternating electric field and extensional sheath flows. The resulting macroscopic filaments exhibit improved mechanical, electrical, and liquid sensing properties, showing promise for environmentally friendly and scalable manufacturing of multifunctional fibers.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Fuhao Dong, Xinxin Yang, Lizhen Guo, Yuehan Qian, Penghao Sun, Zhen Huang, Xu Xu, He Liu
Summary: Recently, conductive composites have been used in flexible electronic devices and have attracted attention. A conductive composite with self-healing and recyclability was developed using a polyurethane elastomer with dynamic boronic ester as the polymer matrix and carbon nanotubes as a conductive filler. The prepared polyurethane conductive composite exhibited good self-healing, mechanical properties, high conductivity, and sensitivity, making it suitable for wearable electronic devices such as self-healing strain sensors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)