Article
Chemistry, Physical
Min Kang, Hai Zhou, Pushan Wen, Ning Zhao
Summary: By using a hydrothermal synthesis method, ultrathin nanosheet-structured transitional metal oxides with highly hierarchical porous structure were prepared on nickel foam, facilitating electrolyte diffusion and improving electrochemical performance. The material exhibited high specific capacity and cycling stability, showing great potential as a high-performance supercapacitor material.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yunlei Zhong, Litong Wang, Zhenjiang Yu, Chaowei Li, Zhaorui Wen, Junpeng Xie, Yue Hu, Wei Wang, Guo Hong
Summary: The study proposes the practical doping of fluorine ions into the host lattice of nickel oxide to improve the performance of battery materials. By creating multiple ion transmission pathways, controlling stress/strain, and enhancing crystal structural stability, the performance of lithium-ion storage can be improved.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Qing Li, Xiaotian Guo, Jiajia Wang, Huan Pang
Summary: Hierarchical NiO nanosheets@nanorods have been designed and constructed for efficient urea electrooxidation in alkaline solution. The integration of Ni(OH)2 nanosheets and NiC2O4 nanorods in a heterostructure through one-step anion-competitive reaction strategy results in the hierarchically porous structure and high specific surface area. These NiO nanosheets@nanorods exhibit superior activity with a low overpotential, slight Tafel slope, and high stability in urea electrooxidation. This work promotes the application of well-designed hierarchical structure in electrooxidizing urea.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Analytical
Chunyan Li, Pil Gyu Choi, Kyusung Kim, Yoshitake Masuda
Summary: This paper discusses the direct fabrication of ultrathin Ni(OH)2 nanosheets on substrates via a solvothermal process. The thickness and morphology of the nanosheets can be controlled by manipulating the ethanol content in the solvent. The 75% ethanol-based NiO gas sensor demonstrates ultrahigh acetone sensitivity, ultralow detection limit, good stability, and superior acetone selectivity. Low cost NiO nanosheets fabricated via a simple process could be considered as potential candidates for commercial acetone sensing applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Sroeurb Loy, Jun Xiang, Wen-Duo Yang, Yi-Fei Di, Rong-Da Zhao, Fu -Fa Wu, Dong-Mei Ma, Mei -Ting Li, Jia Li
Summary: A 3D hierarchical MnCo2O4@NiO nanosheet was successfully synthesized and calcined using a promising hydrothermal strategy. The MnCo2O4@NiO electrode exhibited a high specific capacitance and excellent cycling stability, making it a promising candidate for supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenda Wang, Zhenting Zhao, Qian Lei, Wenlei Zhang, Pengwei Li, Wendong Zhang, Serge Zhuiykov, Jie Hu
Summary: A highly sensitive hierarchical electrochemical sensing nanostructure was successfully synthesized by enhancing material structure and catalytic effect, showing excellent electrochemical performance and great potential for applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Electrochemistry
Ying Wei, Yuwei Wu, Xiaoman Cao, Luxia Cui, Jiaqi Chen, Qiong Wu, Daliang Liu, Zhijia Sun, Qingguo Zhang
Summary: Precisely controlling the calcination temperature to adjust the porous architectures of ultrathin NiO nanosheets can significantly enhance the performance of supercapacitors.
Article
Chemistry, Multidisciplinary
Li-Xia Liu, Xiang Li, Yanming Cai, Huitong Du, Fuqiang Liu, Jian-Rong Zhang, Jiaju Fu, Wenlei Zhu
Summary: In this study, hierarchical structures composed of ultrathin and porous S-modified Cu nanoflakes were designed as an efficient electrocatalyst for the conversion of CO2 into formate. The designed catalysts exhibited ultrahigh formate current density with high selectivity, which can be attributed to their unique structure providing abundant active sites, fast charge transfer, and highly active edge sites.
Article
Energy & Fuels
Mahmoud A. M. Elsaid, Ahmed A. Hassan, Saad G. Mohamed, Ahmed Z. Sayed, Ashraf M. Ashmawy, Abdelaziz F. Waheed
Summary: FeCo2S4 nanorods structure grown onto nickel foam through a hydrothermal process exhibited excellent electrochemical performance, including high specific capacitance, exceptional cycling stability, and high coulombic efficiency, making them promising electrode materials for high-performance supercapacitor applications.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Chemical
Guofeng Qiu, Yang Guo, Yixin Zhang, Xu Zhao, Jie Xu, Sixi Guo, Fanhui Guo, Jianjun Wu
Summary: This study develops a method to convert waste bamboo shavings into carbon electrode materials with high specific surface area and hierarchical porous structure for supercapacitor applications. The optimized pore structure and surface modification result in excellent electrochemical properties, including high capacitance and cycling stability. This research provides a valuable reference for the design and preparation of low-cost biomass-based hierarchical porous carbon with outstanding performance for supercapacitors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Ze-Lin Cai, Zi-Lin Peng, Meng-Qi Wang, Jia-Yan Wu, Hao-Sen Fan, Yu-Fei Zhang
Summary: In this study, two-dimensional nickel-based coordination polymers were successfully prepared and carbon-doped NiO nanosheets were obtained. The uniform NiO nanocrystals encapsulated into porous N-doped carbon (NiO@NC) nanosheets showed higher rate capability and long-term cycling performance, making them a promising candidate for LIB anode materials.
Article
Chemistry, Multidisciplinary
Zeju Zhang, Lili Chen, Yanhui Zhao, Jielei Huang, Chenfeng Ding, Chunlei Liu, Yaochun Liu, Xiaofen Hong, Yuan Liu, Chunzhao Liu
Summary: This study develops a simple wet-chemistry method combined with stirring procedure to construct new nanowire-assembled TiO2 submicron fibers with hierarchical structures. The resulting 3D TiO2 nanowire-assembled micromaterials exhibit excellent photocatalytic performance due to their unique hierarchical pore structure and dual-phase-induced rich interface.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Multidisciplinary Sciences
Song Wei, Caichao Wan, Xingong Li, Jiahui Su, Wenjie Cheng, Huayun Chai, Yiqiang Wu
Summary: N-doped and 3D hierarchical porous graphene nanofoam (N-GNF) is created on carbon fibers (CFs) via a facile and environmentally friendly N-2 plasma activation method. The N doping increases active sites and hydrophilicity, while the hierarchical nanoarchitecture enhances the effective contact area and electrolyte accommodation. The assembled N-GNF@CFs//Zn NSs@CFs zinc ion capacitor exhibits a high energy density of 105.2 Wh kg(-1) at 378.6 W kg(-1) and an initial capacity retention of 87.9% at 2 A g(-1) after 10,000 cycles.
Article
Chemistry, Physical
Hualiang Wei, Xiaowei Guo, Yan Wang, Zhiyu Zhou, Huifang Lv, Yang Zhao, Zengjie Gu, Zexiang Chen
Summary: Supercapacitors with hierarchical core-shell structure of Co3O4@NiO-1 demonstrate enhanced pseudocapacitance performance, high specific capacitance, and excellent cycling stability. By utilizing this material as positive electrode in an asymmetric supercapacitor, it achieves excellent specific capacitance and high energy density at different power densities, along with exceptional cyclic stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Shunjie Wang, Can Qin, Tao Feng, Ping Zhao, Kuan Cheng, Peng Zhou, Zhuoxun Li, Zhiying Lin, Gang Liu
Summary: Hybridizing a small amount of MoS2 nanosheets with PAN can significantly enhance the capacitance of porous carbon, leading to improved specific capacitance during long-term charge/discharge cycles.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Haixing Gao, Shuo Wang, Weng-Chon (Max) Cheong, Kaixi Wang, Huifang Xu, Aijian Huang, Junguo Ma, Jiazhan Li, Weng-Fai (Andy) Ip, Kwan San Hui, Duc Anh Dinh, Xi Fan, Feng Bin, Fuming Chen, Kwun Nam Hui
Summary: Ultrathin nitrogen-doped carbon nanosheets with intrinsic defects were synthesized through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibited excellent oxygen reduction reaction (ORR) activity and zinc-air battery performance. The adjacent sp3-carbon was found to enhance the adsorption and activation of oxygen molecules on sp2-carbon, leading to a lower ORR overpotential.
Article
Chemistry, Multidisciplinary
Kaixi Wang, Shuo Wang, Kwan San Hui, Junfeng Li, Chenyang Zha, Duc Anh Dinh, Zongping Shao, Bo Yan, Zikang Tang, Kwun Nam Hui
Summary: A 3D quasi-parallel structure consisting of dense Pt nanoparticles immobilized on oxygen vacancy-rich NiOx heterojunctions has been developed as an alkaline hydrogen evolution reaction (HER) catalyst. The catalyst exhibits extraordinary HER performance with a low overpotential, high mass activity, and long durability. When combined with NiFe-layered double hydroxide, the assembled alkaline electrolyzer requires extremely low voltage and can operate stably for a long time.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Su-Young Park, Jung-Won An, Ji-Hu Baek, Hyun-Jae Woo, Woo-Jae Lee, Se-Hun Kwon, Susanta Bera
Summary: This study evaluates the activity and stability of in situ crystallized antimony-doped tin oxide (Sb-SnO2)@RuOx heterostructure nanosheets (NSs) for acidic water oxidation. The catalyst prepared by atomic layer deposition and heat treatment exhibits comparable activity but longer stability than the ex situ catalyst. The controlled interface stability of heterostructure catalysts plays a significant role in enhancing oxygen evolution reaction (OER) activity and stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yunshan Zheng, Junfeng Li, Shunping Ji, Kwan San Hui, Shuo Wang, Huifang Xu, Kaixi Wang, Duc Anh Dinh, Chenyang Zha, Zongping Shao, Kwun Nam Hui
Summary: In this study, a Zn-doped K0.02Na0.55Mn0.70Ni0.25Zn0.05O2 material (denoted as KNMNO-Z) was reported to inhibit the Jahn-Teller effect and reduce the irreversible phase transition in potassium-ion batteries. Through the Zn-doping strategy, higher Mn valence was achieved, leading to an improvement in cyclic stability with a high retention rate of 97% after 1000 cycles.
Article
Nanoscience & Nanotechnology
Sobin Mathew, Ki-Hyun Park, Youri Han, Kwun Nam Hui, Oi Lun Li, Young-Rae Cho
Summary: A novel metal-free catalyst with remarkable activity in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) was synthesized. The catalyst exhibited low overpotential when deposited on a conductive nickel foam substrate. Additionally, it displayed lower operating potentials and good stability in an alkaline anion-exchange membrane electrolyzer.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Min-Ji Kim, Jong-Seong Bae, Myung-Jin Jung, Eunsong Jeon, Yiseul Park, Hasmat Khan, Se-Hun Kwon
Summary: Defect control in TiO2 thin films is challenging but crucial for improving photoelectrochemical (PEC) efficiency in water splitting processes. In this study, defective amorphous TiOx thin films were prepared by atomic layer deposition (ALD) at various growth temperatures. The defect concentration in the films was found to be controllable by adjusting the growth temperature during ALD, as analyzed by X-ray photoelectron spectroscopy and electron spin resonance spectroscopy. The light absorption properties of the films were characterized using ultraviolet-visible absorption spectroscopy. The film deposited at 200 degrees C exhibited the highest defect concentration and photocurrent density compared to other films. By carefully studying the light absorption efficiency, photogenerated charge separation efficiency, and charge transfer efficiency, the correlation between defect concentration and PEC activity in the prepared TiOx thin films was understood. This study provides insights into the PEC properties of defective amorphous ALD-TiOx thin films.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Sanghun Lee, Seunggi Seo, Woo-Jae Lee, Wontae Noh, Se-Hun Kwon, Il-Kwon Oh, Hyungjun Kim
Summary: The correlation between hydroxyl and the growth of ALD TiSiOx was investigated, and it was found that the presence or absence of hydroxyl at different temperatures leads to differences in growth characteristics.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Multidisciplinary
Zhenjiang Yu, Hongmei Shan, Yunlei Zhong, Guo Hong, Kwan San Hui, Xia Zhang, Kwun Nam Hui
Summary: This study presents a lithium-free V2O5 cathode for application in polymer-based solid-state batteries (SSBs) with high energy density. The microstructured transport channels and suitable operational voltage enable the utilization of polymer-based solid-state electrolyte (SSE). The V2O5 cathode, constructed through microstructural engineering, exhibits improved electrochemical performance and cycling stability in SSBs.
Article
Chemistry, Physical
Shuo Wang, Lei Li, Kwan San Hui, Duc Anh Dinh, Zhiyi Lu, Qiuju Zhang, Kwun Nam Hui
Summary: Electrochemical nitrate reduction reaction (NO3RR) has potential in wastewater management and carbon-neutral ammonia synthesis, but lacks high-quality catalysts with controllable reaction pathways and high activity and selectivity. In this study, we explore the application of single atom alloys (SAAs) in nitrate reduction through high-throughput first-principles calculations. We identify Ni/Cu(111) as the most active SAA catalyst for NO3RR and find that the adsorption free energy of *NO3 can serve as an efficient descriptor to design and predict the NO3RR performance of SAAs. Furthermore, we reveal the pH-dependent properties of Cu-based SAAs, which influence the competition between the hydrogen evolution reaction (HER) and NO3RR.
Article
Nanoscience & Nanotechnology
Chen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Summary: We have developed a roll-to-roll lamination strategy for batch fabrication of paper-based waterproof flexible pressure sensors, which exhibit good consistency and reliability. This method allows for the rapid fabrication of waterproof sensors with high stability, fast response time, and wide measurement range, enabling applications in human physiological signal detection, motion tracking, and drowning detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Cheng-Zong Yuan, Shuo Wang, Kwan San Hui, Kaixi Wang, Junfeng Li, Haixing Gao, Chenyang Zha, Xiaomeng Zhang, Duc Anh Dinh, Xi-Lin Wu, Zikang Tang, Jiawei Wan, Zongping Shao, Kwun Nam Hui
Summary: The synergistic regulation of electronic structures of transition-metal oxide-based catalysts using oxygen vacancy defects and single atom doping can significantly enhance their performance in oxygen evolution reaction (OER). In this study, a simple defect-induced in situ single-atom deposition strategy was developed to deposit atomically dispersed Ru single atoms onto oxygen vacancy-rich cobalt oxides (Ru/Co3O4-x) by a spontaneous redox reaction. The resulting Ru/Co3O4-x electrocatalyst, with the coexistence of oxygen vacancies and Ru atoms, exhibited excellent OER performance with a low overpotential, small Tafel slope value, and good long-term stability in alkaline media. Density functional theory calculations revealed that the synergy between oxygen vacancies and atomically dispersed Ru can optimize the adsorption of oxygen-based intermediates and reduce the reaction barriers of OER by tailoring the electron decentralization and d-band center of Co atoms. This study proposes a feasible strategy for constructing electrocatalysts with abundant oxygen vacancies and atomically dispersed noble metals, and provides a deep understanding of the electronic engineering of transition-metal-based catalysts to boost OER.
Article
Chemistry, Multidisciplinary
Jincheng Wang, Rui Chen, Dongsheng Ji, Wenjun Xu, Wenzhuo Zhang, Chen Zhang, Wei Zhou, Tao Luo
Summary: In this study, a flexible bimodal sensor that utilizes the spatial orthogonality between in-plane thermoelectricity and out-plane piezoresistivity is proposed. This sensor enables fully decoupled temperature-pressure sensing with high sensitivity and negligible mutual interference, providing accurate measurements within a wide pressure range and temperature variation.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
