Article
Chemistry, Multidisciplinary
Kai Deng, Tongqing Zhou, Qiqi Mao, Shengqi Wang, Ziqiang Wang, You Xu, Xiaonian Li, Hongjing Wang, Liang Wang
Summary: This work presents the fabrication of polyallylamine-encapsulated Ir metallene with defects and a porous structure (Ir@PAH metallene) through a one-step wet chemical reduction method. The Ir@PAH metallene exhibits excellent performance in the hydrogen evolution reaction (HER), with low overpotential, a low Tafel slope, and almost no activity decay after stability test. The abundant defects and pores, as well as the nanosheet structures of Ir@PAH metallene, provide a large specific surface area, high conductivity, and efficient mass transport/diffusion. The surface-functionalized PAH molecules play a crucial role in modulating the electronic structure and capturing hydrogen ions, which is beneficial for HER in acidic media.
ADVANCED MATERIALS
(2022)
Article
Electrochemistry
Xiaoli Jiang, Mengyi Tang, Lin Tang, Na Jiang, Qiaoji Zheng, Fengyu Xie, Dunmin Lin
Summary: The study successfully designed self-supported and hollow porous MoO3/NiF2 heterogeneous nanowires, exhibiting excellent OER catalytic performance in alkaline solution. Advanced strategies were used to enhance current density and stability in water splitting process.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Songliang Liu, Shuli Yin, Hugang Zhang, Shiqian Jiao, Ziqiang Wang, You Xu, Xiaonian Li, Liang Wang, Hongjing Wang
Summary: The study introduces a facile method to synthesize Au@PdPt porous nanowire architecture which shows superior catalytic performance for electrocatalytic oxygen reduction reaction. This synthetic strategy can be widely used for preparing porous core-shell structured metallic nanowires for various electrocatalytic applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Ziyi Xu, Sinan Li, Weizhao Lu, Xiaoyi Dou, Yong Wu, Julan Zeng, Yuhai Dou, Jian Zhang, Jinchao Wei, Linping Yu
Summary: Constructing self-supported electrocatalysts is important for enhancing the performance of water splitting. In this study, a bimetallic phosphide CoNiP grown on a micro-sized porous nickel substrate showed low overpotentials for hydrogen and oxygen evolution reactions. The micro-sized porous nickel substrate provided a large surface area for active material loading, and the hierarchically porous structure facilitated mass transfer in the electrocatalytic reaction. The CoNiP/MP Ni electrocatalyst achieved ultra-low overpotentials and stable operation, making it a promising candidate for water splitting.
Review
Chemistry, Inorganic & Nuclear
Kayode Adesina Adegoke, Nobanathi Wendy Maxakato
Summary: This study presents recent advancements in the application of porous metal oxide electrocatalysts for energy conversion technologies. It discusses the evolution of porous material sciences, the importance of oxides in electrocatalysis, and the synthesis and analysis techniques for porous metal oxides. Additionally, it summarizes the fundamental concepts, mechanisms, performances, challenges, and prospects of different energy conversion technologies, emphasizing the critical role of oxygen defects.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Caige Wang, Tao Wang, Qian Liu, Wei Jia, Xiaofeng Han, Dongling Wu
Summary: A novel porous carbon microspheres (CMS2) modified by NiCo2O4 nanoflower (CMS2-NiCo2O4) were prepared as an ORR and OER catalyst. The efficient oxygen catalytic activity is gained by creating a coupling interface between NiCo2O4 and CMS. The optimized CMS2-NiCo2O4 shows excellent performance in zinc-air batteries.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Energy & Fuels
Chao Wang, Guozhe Sui, Dongxuan Guo, Jinlong Li, Xiaoyu Ma, Yan Zhuang, Dong-Feng Chai
Summary: In this study, oxygen vacancies-rich NiCo2O4 nanowires assembled on porous carbon derived from discarded cigarette ash were synthesized for hydrogen evolution reaction (HER) and supercapacitor (SCs). The introduction of phosphate ions and the 3D porous network structure of porous carbon greatly improved the conductivity and electrochemical performance of the composite material. The O-v-NCO/PC-0.1 catalyst exhibited a low overpotential for HER and a high specific capacitance for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Wei Li, Jing Liu, Peifang Guo, Haozhe Li, Ben Fei, Yanhui Guo, Hongge Pan, Dalin Sun, Fang Fang, Renbing Wu
Summary: Designing a composite electrocatalyst with Co/CoP heterojunction embedded within a hierarchically ordered carbon matrix resulted in significantly enhanced catalytic activity due to optimized active site exposure and proton transfer facilitation. The Co/CoP@HOMC composites exhibited outstanding performance in hydrogen and oxygen evolution reactions, surpassing the performance of traditional Pt-based catalysts in an alkaline electrolyzer.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jin Yang, Yanan Wang, Jie Yang, Yajun Pang, Xinqiang Zhu, Yinzhuo Lu, Yitian Wu, Jiajie Wang, Hao Chen, Zongkui Kou, Zhehong Shen, Zhenghui Pan, John Wang
Summary: The quenched-engineered NiCo2O4 nanowire electrode shows greatly enhanced OER activities in alkaline freshwater and seawater electrolytes, achieving high catalytic performance with low overpotentials. The study provides a new quenching method for obtaining high-performance transition metal oxide catalysts for freshwater/seawater electrocatalysis.
Article
Chemistry, Physical
Shuangshuang Jiang, Li Zhu, Zhanzhan Yang, Yingang Wang
Summary: A self-supported FeNiCo-based amorphous catalyst with hierarchical micro/nanoporous structure was successfully designed, showing fast reaction kinetics, abundant active sites, and significant catalytic activity under alkaline conditions, enabling stable electrolysis apparatus for overall water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Fei Guo, Zhuo Liu, Yiyong Zhang, Jie Xiao, Xiaoyuan Zeng, Chengxu Zhang, Peng Dong, Tingting Liu, Yingjie Zhang, Mian Li
Summary: The integration of nickel nanopartide-embedded carbon layers into three-dimensional hierarchically porous carbon architectures, with ultrahigh boron and nitrogen doping, significantly improves the catalytic performance of Ni catalysts for water splitting. The optimized Ni@BNPCFs-900 networks exhibit a large surface area, abundant active sites, and excellent stability, showing superior catalytic activity for hydrogen evolution and oxygen reduction reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Guanzhi Wang, Jinfa Chang, Supriya Koul, Akihiro Kushima, Yang Yang
Summary: The novel dynamic CO2-bubble template approach was able to electrochemically fine-tune the exposed Pt active sites in PtFeNi porous films, leading to improved activity for oxygen reduction and evolution reactions. This method achieved high power density and durability in Zn-air batteries, demonstrating the efficiency of microstructure tuning for enhancing PGM catalyst activity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Engineering, Environmental
Dengke Zhao, Yuguang Zhu, Qikai Wu, Wei Zhou, Jiacheng Dan, Hao Zhu, Wen Lei, Li-Jun Ma, Ligui Li
Summary: A low-loading of Ir-coated cobalt nanoparticles embedded in nitrogen-doped carbon nanotube/porous carbon sheets was prepared as a trifunctional electrocatalyst for OER, HER, and ORR. The resulting composites showed excellent catalytic activity in both acidic and alkaline electrolytes, with low overpotentials and high half-wave potential. Moreover, it demonstrated outstanding performance as an air cathode for rechargeable Zn-air battery, with high specific capacity, low charge-discharge polarization, and long cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Fei Guo, Zhuo Liu, Jie Xiao, Xiaoyuan Zeng, Chengxu Zhang, Yan Lin, Peng Dong, Tingting Liu, Yingjie Zhang, Mian Li
Summary: Novel three-dimensional cobalt nanoparticles-embedded ultrahigh boron and nitrogen doped hierarchically porous carbon nanowires (Co@BNPCFs) were successfully synthesized and exhibited excellent water splitting performances and electrolysis stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zihan Meng, Gang Zhu, Jiawei Wu, Rui Wang, Tian Tian, Haibo Tang, Ren Luo, Donghao Ye, Ruiming Zhang, Felix Kwofie, Yi Cheng, Haolin Tang
Summary: This study proposes a facile approach for obtaining hierarchically porous cobalt-nitrogen codoped carbon for reversible oxygen reduction and evolution reactions. The catalyst exhibits outstanding bifunctional activity, high power density, and long-term durability, making it highly promising for rechargeable metal-air batteries. The research findings are of great significance for the development of low-cost oxygen electrocatalysts.
MATERIALS TODAY ENERGY
(2022)
