Article
Materials Science, Multidisciplinary
Wenhui Ma, Jiankai Wang, Tao Wu, Jing Wen, Baoru Zhao, Liang Wei, Yong Zhang, Shan Fan
Summary: Nitrogen-doped graphene quantum dots/reduced graphene oxide composite hydrogels were synthesized via a hydrothermal approach and exhibited excellent electrochemical performance, especially in binder-free symmetric supercapacitors with high specific capacitance and good cycle stability.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Yong Zhang, Qingyun Zhou, Wenhui Ma, Chaohui Wang, Xuefeng Wang, Jiajun Chen, Tiantian Yu, Shan Fan
Summary: In this study, nanocellulose/nitrogen and fluorine co-doped graphene composite hydrogels were prepared through a convenient hydrothermal approach. The hydrogels exhibited remarkable electrochemical performance, including high specific capacitance, good rate performance, and remarkable cycle stability. Additionally, all-solid-state flexible supercapacitors fabricated using these hydrogels also showed high specific capacitance and long service life.
Article
Polymer Science
Qianlan Ke, Yan Liu, Ruifang Xiang, Yuhui Zhang, Minzhi Du, Zhongxiu Li, Yi Wei, Kun Zhang
Summary: This study presents a novel strategy to fabricate nitrogen-doped porous core-sheath graphene fibers, aiming to enhance the utilization of graphene layers in fiber electrodes by introducing nitrogen doping and small-sized graphene sheets. The resulting nitrogen-doped core-sheath graphene-based fibers exhibit significantly improved electrochemical performance.
Article
Energy & Fuels
Yong Zhang, Kaige Liu, Xijun Liu, Wenhui Ma, Shuhua Li, Qingyun Zhou, Haoxin Pan, Shan Fan
Summary: In this study, nanocellulose/reduced graphene oxide composite hydrogels (NCGHs) with a dense porous structure and large packing density were prepared using a simple hydrothermal method. These NCGHs showed high volumetric capacitance, large volumetric energy density, and good rate capability, making them suitable for next-generation energy storage devices.
Article
Engineering, Environmental
Emad S. Goda, Aafaq Ur Rehman, Bidhan Pandit, Ahmed Al-Shahat Eissa, Sang Eun Hong, Kuk Ro Yoon
Summary: The core-shell structured material fabricated from aluminum-doped cobalt sulfide, encapsulated by nitrogen-doped graphene, showed promising supercapacitive features as a cathode material for solid-state asymmetrical supercapacitor devices. The material exhibited high specific capacity, long cycle life stability, and remarkable retention rate, making it a potential candidate for efficient energy storage electrodes in industrial applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Zhenxiang Zhu, Zhenxing Wang, Zhaohu Ba, Jie Dong, Qinghua Zhang, Xin Zhao
Summary: A three-dimensional N- and S-doped holey graphene hydrogel was prepared to achieve optimized pore structure and high conductivity for high performance supercapacitor electrodes. The binder-free electrode exhibited excellent gravimetric and volumetric capacitance, retaining a high percentage of original capacitance after numerous cycles, showcasing great potential for practical applications.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Chemistry, Multidisciplinary
Glaydson Simoes dos Reis, Helinando Pequeno de Oliveira, Sylvia H. Larsson, Mikael Thyrel, Eder Claudio Lima
Summary: This study focuses on natural carbon sources for preparing CEs towards high electrochemical performance in SCs. The influences of ACs' pore characteristics and nitrogen doping on the overall electrochemical performance are discussed.
Article
Chemistry, Multidisciplinary
Feng Su, Shuanghao Zheng, Fangyan Liu, Xiong Zhang, Fangyuan Su, Zhong-Shuai Wu
Summary: NHGNSs are prepared through a simple method, exhibiting high specific capacitance and excellent rate capability, showing great potential for supercapacitor application.
CHINESE CHEMICAL LETTERS
(2021)
Article
Engineering, Chemical
Ahmad Allahbakhsh
Summary: Solar evaporation using nitrogen-doped graphene quantum dots hydrogels shows high efficiency, with the smallest lateral size range N-GQDs precursor achieving the highest solar steam generation efficiency. The performance of these hydrogels is attributed to their colloidal morphology, high hydrophilicity, hierarchical pore structure, and low thermal conductivity.
Article
Chemistry, Multidisciplinary
Yong Zhang, Liang Wei, Xijun Liu, Wenhui Ma, Jiankai Wang, Shan Fan
Summary: An easy one-pot hydrothermal strategy was utilized to prepare N/O co-enriched graphene hydrogels with excellent electrochemical properties, making them suitable as electrode materials for commercial supercapacitors.
Article
Chemistry, Physical
Yong Zhang, Liang Wei, Xijun Liu, Wenhui Ma, Chunhua Lou, Jiankai Wang, Shan Fan
Summary: Nanocellulose/N, O co-doped graphene composite hydrogels (NGCHs) were successfully synthesized by a simple hydrothermal method. The NGCHs exhibited a dense structure, abundant heteroatom-rich functional groups, and high packing density, resulting in excellent electrochemical performance. These findings provide potential electrode materials for next-generation miniaturized energy storage devices.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Bing Bai, Linlin Qiu, Yongfeng Yuan, Lixin Song, Jie Xiong, Pingfan Du
Summary: This study presents a strategy to enhance the electrochemical performance of fiber electrodes by constructing nitrogen-doped siloxene/graphene composites. The composites demonstrate a synergistic effect for enhancing ion diffusion and offer flexibility. The nitrogen-doped siloxene/graphene hybrid fibers show remarkable electrochemical performance and exceptional mechanical flexibility for fiber-based supercapacitor applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Hailong Shen, Xiaochun Wei, Zhenqi Cen, Dan Lu, Man Cai, Haifu Huang, Zhiqiang Lan, Xianqing Liang, Wenzheng Zhou
Summary: This study demonstrates the successful synthesis of nitrogen-doped graphene through UV light radiation and thermal decomposition of ammonium bicarbonate. The nitrogen-doped graphene exhibits high specific capacitance, good rate performance, and cycle stability in the form of spherical nanoparticles.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Ceramics
Feng Han, Duanzhi Duan, Weixuan Jing, Qian Wu, Bian Tian, Zhongkai Zhang, Junshan Liu, Yu Sun, Zhuangde Jiang
Summary: This study introduces a plasma-assisted treatment strategy to enhance the electrochemical performance of nitrogen-doped graphene fibers, resulting in a significant improvement of the supercapacitor's performance. The plasma treatment increases the specific surface area, tunes hierarchically porous structure, and improves wettability of the NGFs, leading to higher capacitance and energy density. The plasma-treated NGFs exhibit superior rate capability and cyclic performance, making them promising candidates for high-performance and flexible power sources in future wearable electronics.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ziyu Geng, Weiwen Chen, Zenghui Qiu, Haijun Xu, Dingjie Pan, Shaowei Chen
Summary: This study reports the construction of asymmetric supercapacitors (ASCs) using MXene-based materials, which exhibit high energy density. NiO nanosheets are hydrothermally deposited onto a V4C3TX substrate, and then assembled into a 3D porous heterostructure hydrogel with the help of graphene oxide-assisted self-convergence hydrothermal process. The resulting hierarchical V4C3TX@NiO-RGO heterostructure hydrogel demonstrates an ultrahigh specific capacitance of 1014.5 F g(-1) at 1 A g(-1). In addition, a defective reduced graphene oxide (DRGO) hydrogel with higher specific capacitance (258 F g(-1) at 1 A g(-1)) than untreated RGO hydrogel (176 F g(-1)) is prepared. An ASC device assembled with these two electrodes exhibits stable operating voltage, high energy density, and excellent cycling stability.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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)