Article
Materials Science, Ceramics
Jun Lin, Zhao Wang, Xiuyu Lin, Xuan Wei, Wei Zheng, Qichang Hu
Summary: AlN has great potential for ultraviolet detectors due to its characteristics of ultra-wide bandgap, radiation resistance, high thermal and chemical stability. However, its application in solar-blind ultraviolet detection is limited by the absorption cutoff edge. In this study, a photovoltaic SBUV detector with p-Gr/i-AlZnN/n-Si heterojunction structure is fabricated using amorphous AlZnN film with an absorption cutoff edge of 258 nm. The device exhibits outstanding SBUV detection performance, indicating the potential for the preparation of AlZnN SBUV detectors with excellent performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yuhan Ding, Zhichao Wang, Jusha Ma, Chen Shen, Nannan Chen, Xunchun Wang, Kanglong Wu, Lin Wang, Yan Cai, Bin Qian, Xueming Hua
Summary: In this research, the bonding quality and failure mechanism of the parallel gap resistance welding (PGRW) joint in temperature cycling environment is investigated. It is found that a solid diffusion bonding is achieved at the Ag/Au interface at a current density of 417 A/mm2, but crack initiation by thermal fatigue occurs at the joint edge and propagates along the interface as temperature cycling continues, leading to joint failure.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
T. I. Milenov, I. A. Avramova, A. Dikovska, D. Karaivanova, P. Terziyska, S. K. Kolev, D. Karashanova, B. Georgieva, D. Dimov, V. Atanasov, E. P. Valcheva
Summary: The study found that UV-C irradiation had a significant impact on the structural quality of a-C:H and ta-C:H films, reducing the content of sp(3) and oxygen-containing radicals. The influence of UV-C light directed almost parallel to the films' surface on the structural quality of graphene-like films was slightly higher than that directed perpendicular.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Qingbo Li, Shili Zheng, Yaoqing Mao, Dingsheng Xu, Yuandong Peng, Yifan Zhao
Summary: FeSiCrBC amorphous powder was treated with nitric acid solution to form an insulating layer on the surface. The effects of nitric acid concentration and annealing temperature on the microstructure and magnetic properties were investigated. The formation mechanism of the insulating layer was discussed, which mainly consisted of iron complex oxides. The annealed sample at 450°C with 2% nitric acid concentration showed the best magnetic properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Chemistry, Multidisciplinary
Bing Wang, Gill M. Biesold, Meng Zhang, Zhiqun Lin
Summary: Amorphous inorganic semiconductors have been increasingly studied for their unique properties in various applications such as solar cells and photocatalysis. While their success has been demonstrated, the underlying mechanisms remain unclear. There are promising prospects for further developments in the applications of amorphous inorganic semiconductors.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Xiao-Hua Hu, Rui Zhang, Zhiyong Wu, Shisheng Xiong
Summary: A green and straightforward method has been developed to produce graphene directly from common biomass materials using concentrated solar radiation. The resulting graphene, named concentrated-solar-induced graphene (CSIG), exhibits excellent properties and strong antibacterial potential against Escherichia coli. This method provides a new route for large-scale production of graphene materials from low-cost biomass materials, turning waste into useful materials.
Article
Engineering, Electrical & Electronic
Deepika Jamwal, Nandu B. Chaure, Rakesh Vaid
Summary: The study focused on the synthesis and characterization of an amorphous zirconium oxide thin film as an anti-reflective coating for silicon solar cells. The low-temperature sol-gel spin-coating method was used for synthesis, with UV exposure intended for potential photovoltaic applications. The structural differences in the amorphous zirconium oxide film can affect the photovoltaic properties, and using a-ZrOx as an ARC can improve the efficiency of the solar cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Fengshi Li, Hewei Zhao, Xiaoyi Sun, Yonghai Yue, Zhongchang Wang, Lin Guo
Summary: In this study, a super-strong and flexible fiber was successfully prepared by introducing a crystalline GO and amorphous ZrO2 superstructure, which is analogous to a naturally ordered microstructure in nacre. The fiber showed excellent combination of high strength and toughness. The findings demonstrate that the crystalline-amorphous dual-phase strategy can serve as an economical and environment-friendly method to prepare GO-based fibers with high performance.
Article
Chemistry, Physical
Tingting Cai, Qing Chang, Chaorui Xue, Ning Li, Jinlong Yang, Shengliang Hu
Summary: Amorphous materials have potential applications in photocatalysis due to their abundant active sites and tunable electronic configuration. However, intrinsic lattice distortion can cause self-trapping effects and recombination of photogenerated carriers. This study introduces carbon dots as a heterogeneous nucleus to regulate the configuration and composition of amorphous nickel oxides, resulting in nanocomposites with superior photocatalytic activities. The excellent performance is attributed to the efficient separation of charges and cyclic conversion between Ni2+ and Ni3+ in the defects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
He Kang, Yanhui Zhang, Jing Li, Shuang Wang, Zhiying Chen, Yanping Sui, Sunwen Zhao, Guanghui Yu
Summary: The study reported the successful synthesis of a large area adlayer-free monolayer graphene film on Cu80Ni20 foil, revealing a wide growth parameter window for adlayer-free monolayer graphene on Cu80Ni20 substrate that enables easy and controllable growth. A growth model for adlayer-free monolayer graphene on Cu80Ni20 substrate was also proposed.
Article
Chemistry, Inorganic & Nuclear
S. A. Salleh, M. Y. A. Rahman, T. H. T. Aziz
Summary: This study investigates the influence of thiourea concentration on the properties of nickel sulphide-reduced graphene oxide and its performance as a counter electrode in dye-sensitized solar cells. The findings show that the sample prepared with 1.20 M thiourea exhibits the highest power conversion efficiency, making it a potential substitute for platinum in DSSCs.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jingyi Zhang, Lei Shu, Chao Chang, Xiaoxiang Li, Ruiming Lin, Benwei Fu, Chengyi Song, Wen Shang, Peng Tao, Tao Deng
Summary: By utilizing crumpled particles as photothermal converters, this study successfully prepared stably-dispersed medium-temperature solar-thermal nanofluids, enabling efficient solar-thermal energy harvesting even under elevated temperatures. The nanofluids maintained uniform dispersion, high solar absorptance, and favorable thermophysical properties, ensuring consistent high performance under large-flux solar illumination.
Article
Chemistry, Multidisciplinary
Mahmound Tamadoni Saray, Vitaliy Yurkiv, Reza Shahbazian-Yassar
Summary: Understanding the thermal decomposition of metal salt precursors on carbon structures is crucial for synthesizing metal-decorated carbon nanomaterials. In this study, the thermolysis of NiCl2·6H2O on amorphous carbon (a-C) and graphene oxide (GO) substrates was investigated using in situ transmission electron microscopy. The results showed that the thermal decomposition of NiCl2·6H2O on GO occurred at higher temperatures and slower kinetics compared to the a-C substrate. The different behaviors were attributed to the higher activation barrier for Cl-2 removal, strong Ni-GO interaction, high-density oxygen functional groups, defects, and weak van der Waals force on the GO substrate.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Xiaolin Guo, Pengfei Xing, Shuai Wang, Jian Kong, Shengnan Jiang, Yanxin Zhuang
Summary: In this study, purification of solar cell silicon scraps was carried out through chemical etching. The optimal conditions included HF-H2SO4-HNO3 mixed acid, reaction temperature of 60 degrees C, ultrasonic frequency of 45 kHz, and ultrasonic power of 240 W. Results indicated effective removal of inclusions and iron from the silicon scraps at a low cost.
Article
Chemistry, Multidisciplinary
Ruiyun Li, Xing Yang, Ming Ma, Junyan Zhang
Summary: The hydrogen-induced thermodynamic reaction in friction experiments can convert amorphous carbon into graphene, which is of great importance for achieving solid-state transformation between different carbon allotropes and synthesizing other graphitic encapsulated catalysts with doped elements.
Article
Chemistry, Multidisciplinary
Yuchi Wan, Zhijie Wang, Jia Li, Ruitao Lv
Summary: This study proposes Mo2C-MoO2 heterostructure quantum dots embedded in reduced graphene oxide as efficient catalysts for the electrocatalytic NRR, achieving a high NH3 yield rate and Faradaic efficiency. Density functional theory calculations and surface properties analysis reveal the superior performance of this catalyst.
Article
Chemistry, Multidisciplinary
Leping Yang, Xu Zhang, Lingxiao Yu, Jianhua Hou, Zhen Zhou, Ruitao Lv
Summary: In this study, a Fe-N-4/C catalyst immobilized on a carbon fiber membrane was synthesized, showing excellent catalytic activity for oxygen reduction and evolution reactions through sulfur doping to modulate atomic configurations. The catalyst demonstrated superior electrochemical performance and cycling stability, outperforming commercial Pt/C and most reported M-N-x/C catalysts. The findings offer promising prospects for flexible electronic device applications.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Zhe Yang, Jianjian Zhong, Jiameng Feng, Jianling Li, Feiyu Kang
Summary: This study applied Os surface doping to lithium-rich layered oxides, resulting in the design of a surface heterostructure with three-dimensional disorder, which effectively inhibits the generation of O-O dimers and loss of surface oxygen, ultimately improving the electrochemical performance of lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Qian Lv, Junyang Tan, Zhijie Wang, Lingxiao Yu, Bilu Liu, Junhao Lin, Jia Li, Zheng-Hong Huang, Feiyu Kang, Ruitao Lv
Summary: This study presents a new in situ substitutional doping strategy to synthesize Re-doped WSe2 (Re-WSe2) alloy, which exhibits excellent molecular sensing performance and long-term air-stability, essential for practical applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Min Fu, Zitong Zhu, Wei Chen, Hao Yu, Ruitao Lv
Summary: Despite their low cost and high theoretical specific capacitances, nickel-based compounds face challenges such as poor conductivity and limited active sites, which limit their applications in flexible supercapacitors. This study successfully synthesizes a series of flower-like nickel-based compound electrodes, with NiS2/CC hybrid electrodes showing improved electrochemical performance.
Article
Materials Science, Multidisciplinary
Min Fu, Jing Yang, Meng Gao, Ruitao Lv
Summary: This study utilizes carbon cloth as a flexible substrate to incorporate NiO nanoparticles and coat with graphene, successfully fabricating flexible asymmetric supercapacitors (FASCs) with excellent electrochemical performances. The FASCs demonstrate a large potential window, high energy density, good capacitance retention, and flexibility, showing great potential for future flexible wearable energy storage devices.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
Yufeng Zhang, Qian Lv, Aoran Fan, Lingxiao Yu, Haidong Wang, Weigang Ma, Ruitao Lv, Xing Zhang
Summary: This study measured the thermal conductivity of monolayer WS2 using a dual-wavelength flash Raman method and found a reduction in thermal conductivity due to substrate effect. Molecular dynamics simulations revealed that the suppression of acoustic phonons is the main cause of this reduction. Raman spectroscopy investigation showed clear effects of substrate interaction on optical phonons.
Article
Chemistry, Applied
Lingxi Zhou, Ruitao Lv
Summary: Electrochemical CO2 reduction (eCO2RR) is an emerging strategy for addressing global carbon balance issues. This review article highlights recent advances in mechanistic understanding, catalyst design strategies, and advanced characterization techniques for building alcohol-selective eCO2RR electrocatalysis systems.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Chong Wang, Qingtao Yu, Ning Zhao, Bohan Li, Wanci Shen, Feiyu Kang, Zheng-Hong Huang, Ruitao Lv
Summary: Sodium ion hybrid capacitors (SIHCs) are advanced power supply systems, but their performance improvement is hindered by the kinetics imbalance between the cathode and anode. This study introduces a N, P, O ternary-doped mesoporous carbon as the anode material, which exhibits excellent rate performance and cycle stability due to its large interlayer distance and high surface-controlled capacitive behavior ratio.
JOURNAL OF MATERIOMICS
(2022)
Article
Electrochemistry
Xiaoyong Yang, Changzhen Zhan, Deping Xu, Ding Nan, Ruitao Lv, Wanci Shen, Feiyu Kang, Zheng-Hong Huang
Summary: A nitrogen-doped Si-graphite composite microspheres enhanced by a three-dimensional carbon network has been synthesized using the spray drying method. The carbon network structure generated by sodium alginate carbonization enhances the structural stability and electron transfer of the material. The conversion of Si particles into silicon oxide during sodium alginate carbonation process helps suppress volume expansion effects and enhance the electrochemical performance of the material.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Luo Wei, Qingtao Yu, Xiaoyong Yang, Ji-Hui Li, Wanci Shen, Feiyu Kang, Ruitao Lv, Liqiang Ma, Zheng-Hong Huang
Summary: In this study, a hybrid of nano-SnO2 and moderately exfoliated graphite (MEG) coated with amorphous carbon (SnO2/MEG@C) was designed to overcome the low coulombic efficiency, low conductivity, and large volume expansion of SnO2. The interaction between MEG and carbon coating effectively hindered Sn coarsening and maintained rapid mutual diffusion kinetics, resulting in high-efficiency conversion reaction and excellent reversibility and cyclicity of SnO2. The SnO2/MEG@C electrode exhibited a high capacity of 691.4 mAh g(-1) after 900 cycles at 1.0 A g(-1).
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Chen Zhang, Sichen Gu, Danfeng Zhang, Jiabin Ma, Han Zheng, Muyun Zheng, Ruitao Lv, Kuang Yu, Junqiao Wu, Xiaomin Wang, Quan-Hong Yang, Feiyu Kang, Wei Lv
Summary: The use of high-concentration electrolytes (HCEs) provides a promising way to stabilize the lithium metal anode, but their high viscosity and poor wettability hinder Li-ion diffusion kinetics. This study presents a new strategy using an ether-based, nonflammable localized high-concentration electrolyte (LHCE), which includes a fire-retardant diluent, to enhance safety and suppress dendrite formation in lithium metal batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Applied
Leping Yang, Lingxiao Yu, Zheng-Hong Huang, Feiyu Kang, Ruitao Lv
Summary: In this study, a scalable approach of engineering highly exposed Fe-N4/Cx sites on a porous carbon nanofiber membrane as a binder-free air electrode catalyst for ZABs is proposed. The as-synthesized electrocatalyst shows excellent catalytic activity and mass transport properties, resulting in high capacity, peak power density, and prolonged cycling in ZABs. The flexible properties of the electrocatalyst allow for stable cycling in different states.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Yuchi Wan, Zhijie Wang, Muyun Zheng, Jia Li, Ruitao Lv
Summary: This study successfully achieved efficient electrochemical NRR by constructing Bi-MoOx@RGO electrocatalysts with crystalline-amorphous interfaces. The optimized design of the catalyst and the utilization of gas diffusion electrode in the flow cell further improved the NH3 yield.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Multidisciplinary Sciences
Yufeng Zhang, Qian Lv, Haidong Wang, Shuaiyi Zhao, Qihua Xiong, Ruitao Lv, Xing Zhang
Summary: Simultaneous electrical and thermal rectification was achieved in a MoSe2-WSe2 lateral heterostructure. A preferred heat dissipation channel was formed under high bias voltage, resulting in a high thermal rectification factor. Furthermore, the rectification factor could be regulated by rotating the interface angle.
