Article
Chemistry, Multidisciplinary
Thi Xuyen Nguyen, Yen-Hsun Su, Chia-Chun Lin, Jrjeng Ruan, Jyh-Ming Ting
Summary: A new high entropy material, HEG, synthesized via a simple solvothermal process, shows excellent oxygen evolution reaction (OER) activity and outperforms binary-, ternary-, and quaternary-metal glycerates. The significance of synergistic effect is demonstrated in modifying electronic structure and coordination environment. Moreover, HEG exhibits outstanding stability and durability in alkaline electrolyte and shows good overall water splitting performance in HEG@HEG electrolyzer.
Article
Chemistry, Multidisciplinary
Yuxiao Gao, Debo Zheng, Qichang Li, Weiping Xiao, Tianyi Ma, Yunlei Fu, Zexing Wu, Lei Wang
Summary: Efficient and stable electrocatalysts with trifunctional catalytic activity are crucial for sustainable energy development. In this study, Co3O4-RuO2 hollow spheres were fabricated using a facile and eco-friendly method, and they showed small overpotentials in hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reaction. Furthermore, these hollow spheres exhibited superior catalytic performances in water-splitting and rechargeable Zn-air batteries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Xu Zhang, Wang Lu, Yuhan Tian, Shixuan Yang, Qiang Zhang, Da Lei, Yingyuan Zhao
Summary: NiCo-LDH hollow spheres were prepared using Co-glycerate as the sacrificial template and cobalt source, showing high specific capacitance and good capacitance retention rate. Asymmetric supercapacitors fabricated with these hollow spheres as positive electrode exhibited a large energy density, providing a new approach for supercapacitor research.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xueting Feng, Qingze Jiao, Wenxing Chen, Yanliu Dang, Zheng Dai, Steven L. Suib, Jiatao Zhang, Yun Zhao, Hansheng Li, Caihong Feng
Summary: The study introduces a novel cactus-like NiCo2S4@NiFe LDH hollow sphere prepared by a hydrothermal method, which effectively enhances the catalytic activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), demonstrating stability in long-term tests and achieving a small potential gap.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Kuang Sheng, Qingfeng Yi, A-Ling Chen, Yuebing Wang, Yuhui Yan, Huidong Nie, Xiulin Zhou
Summary: CoNi/NHCS-TUC-x composite materials, synthesized through a simple pyrolysis strategy, exhibit high ORR/OER electroactivity with different proportions of spherical carbon and tubular carbon, showing interesting bifunctional performance. The CoNi/NHCS-TUC-3 material demonstrates superior electrocatalytic performance for both ORR and OER, making it a promising candidate for rechargeable Zn-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Yuanting Lei, Lili Zhang, Danni Zhou, Chengli Xiong, Yafei Zhao, Wenxing Chen, Xu Xiang, Huishan Shang, Bing Zhang
Summary: This paper reports a catalyst composed of interconnected CoFe alloy nanosheets supported on NiO nanosheets for water splitting. The catalyst exhibits excellent activity and durability, likely due to the interconnected nanosheets structure, abundant exposed active sites, and fast electron transfer.
Article
Chemistry, Physical
Sangwoo Kim, Ji-Won Jung, DongHoon Song, Su-Ho Cho, Jiyeon Kim, Jun Kyu Kim, DongHwan Oh, Hainan Sun, EunAe Cho, Il-Doo Kim, WooChul Jung
Summary: The lack of bifunctional features of perovskite oxide for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) limits its use as a cathode catalyst for rechargeable Zn-air batteries (ZABs). In this study, cobalt-based nanoparticle decorated Sr0.95Nb0.1Co0.7Fe0.2O3-delta (S0.95NCF) is presented as a novel air-electrode catalyst, achieving significantly enhanced activity for OER and ORR. The newly designed catalyst also exhibits remarkable charge/discharge durability, making it a promising candidate for ZABs cathode.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Dazhong Zhong, Tan Li, Dong Wang, Lina Li, Jiancheng Wang, Genyan Hao, Guang Liu, Qiang Zhao, Jinping Li
Summary: This paper introduces partially oxidized CoFe-OH with enhanced covalency of M-O bonds as an efficient electrocatalyst for OER in neutral electrolyte. The enhanced M-O covalency shifts the OER mechanism to lattice oxygen oxidation mechanism in PO-CoFe-OH, promoting rate-limiting deprotonation and providing superior OER performance. It only requires overpotentials of 186 and 365 mV to achieve current density densities of 1 and 10 mA.cm(-2) in 0.1 M KHCO3 aqueous solution (pH = 8.3), showing a new approach for designing efficient catalysts for water oxidation in mild conditions.
Article
Chemistry, Physical
Hadeer K. El Emam, Abdalla Abdelwahab, S. I. El-Dek, Waleed M. A. El Rouby
Summary: Perovskite oxides, including BaTiO3 and Ni-doped BaTiO3, supported on reduced graphene oxide (rGO), were successfully synthesized as hollow spherical structures using aerosol spray pyrolysis. These nanocomposites exhibited excellent bifunctional electrocatalytic activity for both oxygen reduction and oxygen evolution reactions. The prepared materials were extensively characterized, revealing the high mesoporous features of the hollow spheres. The electrochemical performance of these materials demonstrated remarkable improvements compared to pure BaTiO3 and commercial IrO2 electrocatalysts, making them promising candidates for energy related applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Nai-Hsin Ting, Thi Xuyen Nguyen, Chih-Heng Lee, Ying-Cheng Chen, Cheng-Hsi Yeh, Hsin-Yi Tiffany Chen, Jyh-Ming Ting
Summary: This study demonstrates the direct growth of high entropy glycerate (HEG) on Ni foam using a microwave-assisted solvothermal method. The impact of adding Ti, V, Cu, Zn, and/or Mo to a baseline quinary-metal HEG on electrocatalytic performance is investigated. The results show that the catalytic activity can only be enhanced through doping with specific metals, with Ti, V, and Zn additions leading to improved electrocatalytic performances. Co-doping Ti and Zn results in a synergistic effect, leading to robust catalytic activity and durable stability. In addition, the phase transformation of metal glycerate into metal (oxy)hydroxide during OER is studied, and density functional theory (DFT) calculation supports the synergistic effect of Ti and Zn addition in the HEG system.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Ying Wei, Mingbo Zheng, Wei Zhu, Yi Zhang, Wenhui Hu, Huan Pang
Summary: The microstructure of materials plays a significant role in their performance. Hollow-structure materials, as electrocatalysts, exhibit better performance due to their larger specific surface area, lower density, and more exposed active sites. Bimetallic catalysts, compared to monometallic catalysts, have superior catalytic activity due to synergistic effects between different metal elements. Prussian blue and its analogues are ideal precursors for preparing hollow-structure bimetallic catalysts. In this study, hierarchical hollow CoFePBA was prepared using ZIF-67 hollow sphere as a template, and its oxygen evolution reaction catalytic performance was further improved through low-temperature heat treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xinhua Lu, Minglin Du, Tingjian Wang, Wenjing Cheng, Jing Li, Changchun He, Zhao Li, Lin Tian
Summary: Developing a facile and low-cost method for fabricating electrocatalysts with high activity and stability in oxygen evolution reaction (OER) is increasingly important due to the rising consumption of non-renewable energy and resulting environmental problems. In this study, an ultrafast one-step potentiostatic electrodeposition method was demonstrated to fabricate self-supporting CoFe alloy nanocatalysts for OER in just 40 seconds. The self-supporting CoFe alloys have unique pore channels and high electrical conductivity, facilitating electrolyte diffusion, oxygen release, and providing more active sites and higher intrinsic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Haoyue Zhang, Lingling Wu, Yuanman Ni, Jianghan Feng, Qu Jiang, Chaoran Zhang, Ashfaq Ahmad, Abdul Majeed, Yao Li, Cuiping Guo, Wang Zhang, Fang Song
Summary: This study investigates the electronic transport behavior of various metal (oxy)-hydroxides and reveals its crucial role in catalytic performance for oxygen evolution reaction (OER). The results show that charge transportability not only determines the electronic accessibility of catalytic nanoparticles but also regulates the reaction kinetics of active sites. This work provides important insights for the design of efficient electrocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shanfu Sun, Ming Zheng, Pengfei Cheng, Fugui Wu, Luping Xu
Summary: This study synthesizes a porous bimetallic cobalt-iron phosphide nanofoam and demonstrates its lower overpotential and outstanding stability. It is shown that the nanofoam undergoes surface reconstruction and forms highly active (CoxFe1-x)OOH. Theoretical calculations reveal that the optimized energy levels of the bimetal enhance the activity and balance the adsorption-desorption capacities for OER intermediates. This work offers a feasible strategy to enhance reaction activity and prolong the long-term stability of OER by constructing a porous bimetallic nanofoam.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xun Sun, Xin Guan, Hao Feng, Dengchao Zheng, Wenli Tian, Chengyi Li, Chuiyu Li, Minglei Yan, Yadong Yao
Summary: In this study, a direct growth of amorphous metal oxyhydroxide (AMO) attached on CeO2 as an advanced oxygen evolution reaction (OER) catalyst was successfully demonstrated through a galvanic replacement mechanism. The CeO2 substrate provides a high specific surface area and high conductivity for the formation of AMO, ensuring promoted electron transfer for the catalytic reaction. The AMO on the CeO2 surface exposes abundant active sites for the OER, leading to excellent OER performance of the prepared AMO@CeO2 supported on nickel foam.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Lei Yu, Yun Xiao, Chenglong Luan, Juntao Yang, Hongyan Lbw, Yao Wang, Xin Zhang, Xiaoping Dai, Yang Yang, Huihui Zhao
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Kuomiao Yu, Guoqing Ning, Juntao Yang, Yao Wang, Xin Zhang, Yuchen Qin, Chenglong Luan, Lei Yu, Yan Jiang, Xuebin Luan, Zhun Dong, Hai Wang, Xiaoping Dai
JOURNAL OF CATALYSIS
(2019)
Article
Chemistry, Multidisciplinary
Meilin Cui, Huihui Zhao, Xiaoping Dai, Yang Yang, Xin Zhang, Xuebin Luan, Fei Nie, Ziteng Ren, Yin Dong, Yao Wang, Juntao Yang, Xingliang Huang
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Physical
Huihui Zhao, Zhi Li, Jianlin Deng, Xiaoping Dai, Meilin Cui, Fei Nie, Xin Zhang, Ziteng Ren, Yao Wang, Weiyu Song, Jian Liu
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Yao Wang, Meng Zheng, Yunrui Li, Juan Chen, Jinyu Ye, Chenliang Ye, Shuna Li, Jin Wang, Yongfa Zhu, Shi-Gang Sun, Dingsheng Wang
Summary: Optimizing the interatomic distance between dual sites is crucial for the commercialization of direct ethanol fuel cells. Holding long-range Rh-O-Pt dual sites weakens the reaction barrier of C-C cleavage during the ethanol oxidation reaction, achieving a high current density and remarkable stability. The redistribution of surface-localized electrons around Rh-O-Pt promotes the direct oxidation of -OH, accelerating C-C bond cleavage and increasing the selectivity of C1 products.
Review
Chemistry, Multidisciplinary
Yao Wang, Dingsheng Wang, Yadong Li
Summary: The article discusses the current use of Pt/C catalysts in PEMFCs and the challenges faced, emphasizing on the design principles of advanced Pt-based catalysts and theoretical mechanisms behind ORR performance. It also includes a summary of recent advanced Pt-based ORR catalysts and practical preparation standards, as well as predictions for future challenges and design strategies to improve ORR performance of Pt-based catalysts.
Article
Chemistry, Inorganic & Nuclear
Mingxuan Li, Yao Wang, Jing Cai, Yunrui Li, Yujie Liu, Yin Dong, Shuna Li, Xiaolin Yuan, Xin Zhang, Xiaoping Dai
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Inorganic & Nuclear
Yin Dong, Juntao Yang, Yujie Liu, Yao Wang, Zhun Dong, Meilin Cui, Mingxuan Li, Xiaolin Yuan, Xin Zhang, Xiaoping Dai
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Multidisciplinary
Yao Wang, Peng Zheng, Mingxuan Li, Yunrui Li, Xin Zhang, Juan Chen, Xu Fang, Yujie Liu, Xiaolin Yuan, Xiaoping Dai, Hai Wang
Article
Chemistry, Inorganic & Nuclear
Yujie Liu, Chenglong Luan, Juntao Yang, Yin Dong, Yao Wang, Congli Qin, Zhun Dong, Shiqing Wang, Xiaoping Dai, Xin Zhang
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Physical
Yao Wang, Hongying Zhuo, Xin Zhang, Yunrui Li, Juntao Yang, Yujie Liu, Xiaoping Dai, Mingxuan Li, Huihui Zhao, Meilin Cui, Hai Wang, Jun Li
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Juntao Yang, Guoqing Ning, Lei Yu, Yao Wang, Chenglong Luan, Aixin Fan, Xin Zhang, Yujie Liu, Yin Dong, Xiaoping Dai
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Inorganic & Nuclear
Yuchen Qin, Hongying Zhuo, Xiaoyu Liang, Kuomiao Yu, Yao Wang, Daowei Gao, Xin Zhang
DALTON TRANSACTIONS
(2019)
Article
Chemistry, Multidisciplinary
Congli Qin, Aixin Fan, Xin Zhang, Xiaoping Dai, Hui Sun, Danhua Ren, Zhun Dong, Yao Wang, Chenglong Luan, Jin-Yu Ye, Shi-Gang Sun