Article
Multidisciplinary Sciences
Yan Yan, Shuang Liang, Xiang Wang, Mingyue Zhang, Shu-Meng Hao, Xun Cui, Zhiwei Li, Zhiqun Lin
Summary: This study presents a facile strategy for crafting MoS2@Fe-N-C bifunctional electrocatalysts with enhanced ORR and OER performance, leading to robust wearable ZABs with high capacity and outstanding cycling stability. The single-atom-interfaced core/shell design shows lowered energy barriers for both reactions, resulting in efficient metal-air batteries.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Review
Materials Science, Multidisciplinary
Qinming Zhang, Chengyi Wang, Zhaojun Xie, Zhen Zhou
Summary: This article summarizes the latest research progress on graphene and its derivatives as catalytic materials in metal-air batteries. The defects and doping of graphene play an important role in improving the electrochemical performance. The relationship between graphene defects/doping and electrocatalytic mechanisms is discussed, and future directions for the development of graphene-based metal-air battery cathodes are prospected.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ritambhara Gond, Shashwat Singh, Xiaofeng Zhao, Deobrat Singh, Rajeev Ahuja, Maximilian Fichtner, Prabeer Barpanda
Summary: Nanostructured pyrophosphate Na2CoP2O7 polymorphs with efficient bifunctional electrocatalytic activity were discovered. By adjusting the annealing condition, these polymorphs can be prepared at low temperature. The electrocatalytic activity of these cobalt pyrophosphates is rooted in their structural and surface activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tingting Yu, Haitao Xu, Zeyu Jin, Yanyi Zhang, Hua -Jun Qiu
Summary: This study constructs electrocatalysts with high activity for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a multi-component high-entropy oxide (HEO) by adjusting the composition and proportion of metal elements. A highly bifunctional HEO/Co-N-C nanocomposite electrocatalyst is synthesized by integrating the highly ORR active Co-N-C with the multi-component HEO. When used in a Zn-air battery, this electrocatalyst achieves small charge/discharge voltage differences and ultralong lifespan.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Tao Yu, Xiaoting Cao, Ruili Song, Lvzhou Li, Xu Dong, Jiangnan Li, Xi Wang, Xiaoshuang Zhou, Ningyi Yuan, Jianning Ding
Summary: By adding an iron source and using pyrolysis and phosphorylation methods, an efficient bifunctional electrocatalyst (FeCo-NC@Co2P-NC) was synthesized on ZIF-67, which exhibited excellent oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activities, outperforming commercial Pt/C and RuO2 catalysts. This study provides a novel strategy for the rational design of efficient non-precious metal electrocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Longlong Liu, Zunpeng Hu, Minghui Wang, Jinliang Ma, Zihao Chen, Xin Ning, Ding Yuan
Summary: This study presents a simple method for preparing a flexible self-supporting bifunctional catalyst, which shows superior electrocatalytic performances for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in zinc-air batteries. The catalyst is formed by coupling ultrathin NiFe-based layered double hydroxide nanosheets with a metal-organic framework-derived carbon nanoflake array, and introducing Co nanoparticles anchored onto nitrogen-doped porous carbon nanoflakes. The catalyst demonstrates excellent electrocatalytic activities, mechanical flexibility, and is promising for wearable and flexible electronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Lin-Bo Huang, Lu Zhao, Yun Zhang, Hao Luo, Xing Zhang, Jianan Zhang, Hui Pan, Jin-Song Hu
Summary: The morphology and structure of carbon shells significantly affect the performance of FeCo catalysts in Zn-air batteries. Well-graphitized carbon shells can maintain the stability and ORR activity of FeCo nanocrystals, while disordered and defect-rich carbon shells lead to a decrease in activity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xiangjun Zheng, Xuecheng Cao, Yu Zhang, Kai Zeng, Long Chen, Ruizhi Yang
Summary: A cobalt-doped Mn-2(OH)(3)VO3 catalyst was prepared by a facile hydrothermal method, with tuned ratios of cationic redox couples to achieve enhanced electrocatalytic performance. When employed as an air-cathode catalyst for rechargeable Zn-air batteries, the catalyst showed high power density, enhanced rate performance, and outstanding long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sebastian Lorca, Javier Torres, Jose L. Serrano, Jose Perez, Jose Abad, Florencio Santos, Antonio J. Fernandez Romero
Summary: A synthetic route involving thermal treatment of Ru co-ordination complexes was used to prepare RuO2-based materials with catalytic activity for ORR and OER reactions. Characterization confirmed the presence of Ru metal and RuP3O9 in the materials, with improved electrocatalytic performance obtained from calcinated RuCl2(PPh3)3. The catalysts were tested in all-solid and flooded alkaline Zn/air batteries, showing high specific discharge capacity and power density.
Article
Chemistry, Applied
Yanyi Zhang, Xiang-Peng Kong, Xiaorong Lin, Kailong Hu, Weiwei Zhao, Guoqiang Xie, Xi Lin, Xingjun Liu, Yoshikazu Ito, Hua-Jun Qiu
Summary: This work synthesized a flexible air electrode consisting of 3D nanoporous N-doped graphene and Ni particles, showing enhanced ORR and OER activities with improved durability. Synergetic effects between Ni and N-doped graphene were revealed, boosting bifunctional activities and enhancing stability for long-lasting discharge/recharge cycles. The trimodal graphene/Ni structure shows potential for various flexible energy conversion/storage devices.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Chao Zhang, Huifeng Dong, Binling Chen, Tianxu Jin, Jun Nie, Guiping Ma
Summary: The study successfully prepared 3D-structured catalysts with bifunctional activity and long durability, showing outstanding electrocatalytic performance in aqueous and flexible ZABs, with promising applications in the future.
Article
Materials Science, Multidisciplinary
Changjing Fu, Qiang Ma, Qibing Wu, Zaifang Yuan, Zhanqiang Wu, Jun He, Xuewei Li
Summary: In this study, a bifunctional oxygen electrocatalyst based on LSCF was designed and synthesized, which exhibited more surface oxygen vacancies and catalytically active sites for efficient oxygen reduction and evolution reactions. The integration of silver nanoparticles and graphene provided a fast pathway for electron transfer and mass diffusion. The flexible Zn-air battery with Ag/LSCF@graphene as the cathodic catalyst displayed high power density, large specific capacity, and superior charge/discharge stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Review
Chemistry, Physical
Evgeny V. Rebrov, Peng-Zhao Gao
Summary: Zn-air batteries are a promising power source for small electronic devices and electric vehicles due to their high specific energy density and low cost. This review summarizes exciting advancements and challenges in the development of molecular catalysts for cathode reactions in Zn-air batteries, with a focus on bifunctional electrocatalysts for ORR and OER. Strategies for catalyst development and enhancing performance through the application of a magnetic field are discussed. Properly designed bifunctional molecular ORR/OER catalysts can significantly improve battery reversibility and energy efficiency.
Article
Chemistry, Physical
Chen-Chen Weng, Jin-Tao Ren, Hao-Yu Wang, Xian-Wei Lv, Yue-Jun Song, Yan-Su Wang, Lei Chen, Wen-Wen Tian, Zhong-Yong Yuan
Summary: The study focuses on the regulation of the reaction interface microenvironment by structural engineering of a hollow spherical bimetallic electrocatalyst. The well-constructed triple-phase contact points enhance the catalytic efficiency and introduce sulfur dopant to improve catalytic activity. The CoFe-SNC with such a designed microenvironment shows outstanding performance in oxygen reduction reaction and rechargeable Zn-air batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Emanuele Marini, Danilo Oliveira De Souza, Giuliana Aquilanti, Michael Liebert, Francesca Rossi, Benedetto Bozzini
Summary: This study utilized operando X-ray absorption spectroscopy to investigate the chemical changes of manganese oxide component in a newly developed O-2 bi-functional gas diffusion electrode under normal operating conditions and conditions simulating oxygen starvation.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Peng Sun, Yan Wang, Zhongfang Li, Chuangang Wang, Hongchang Pei, Xiaoyan Yin
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Electrochemistry
Hui Guo, Zhongfang Li, Peng Sun, Hongchang Pei, Lei Zhang, Weihui Cui, Xiaoyan Yin, Hongsen Hui
Summary: Ce-TOPT, as a proton conductor, can enhance the proton conductivity of PBI-based proton exchange membranes at high temperature and low humidity conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Hui Guo, Zhongfang Li, Yanan Lv, Hongchang Pei, Peng Sun, Lei Zhang, Weihui Cui, Xiaoyan Yin, Hongsen Hui
Summary: The study utilized a multifunctional proton conductor, TTPSA, to form a high-temperature PEM through multiple cross-linking with CMPEI and mPBI, avoiding leaching and enhancing comprehensive performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Ping Li, Hui Guo, Yanan Lv, Lei Zhang, Peng Sun, Zhongfang Li
Summary: The study focuses on improving the comprehensive properties of high-temperature proton exchange membranes (HTPEM) under wide relative humidity. A new composite membrane is developed with suitable functional groups for proton transfer at high and low humidity, resulting in improved film-forming property, mechanical strength, oxidative stability, and proton conductivity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Peng Sun, Zihan Xia, Zhongfang Li, Ziwei Fan, Fengqi He, Qiang Liu, Xiaoyan Yin
Summary: A high-temperature proton exchange membrane with high proton conductivity over a wide humidity range was synthesized by doping TPBI with ZrSP and post-crosslinking, which enhanced the mechanical stability and conductivity of the membrane material. The prepared membranes showed good thermal stability, high proton conductivity, and dimensional stability, making them promising for various applications.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Electrochemistry
Hongsen Hui, Jinhua Liu, Guoqiang Dong, Jiao Wang, Jiaxin Li, Chunxiang Tang, Tong Zhao, Hongchang Pei, Lei Zhang, Zhongfang Li, Yujun Zhang
Summary: Membrane coupling with electrochemical processes is an effective method for wastewater treatment. However, it faces challenges of high energy consumption and low operational stability. By preparing different forms of nanosheet-MoO3 and using MoO3 loaded porous Ti membranes, a fixed-bed electrocatalytic reactor (FBER) was constructed for synthetic dye wastewater treatment. The results showed that the MoO3/Ti membranes with CTAB additive exhibited the best electrochemical performance, achieving high removal rates of MO and COD with low energy consumption.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yan Wang, Zihan Xia, Hui Ding, Ziwei Fan, Hui Guo, Peng Sun, Zhongfang Li
Summary: A cross-linkable proton conductor SHBPBI was synthesized by sulfonating hyperbranched polybenzimidazole. A high-temperature proton exchange membrane was prepared with excellent thermal stability and proton conductivity. The composite membrane showed potential applications in proton exchange membrane fuel cells and direct methanol fuel cells due to its good performance in proton conduction, durability, and low leaching rate.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Weihui Cui, Peng Sun, Ping Li, Lei Zhang, Xulei Zhi, Qiang Liu, Zhongfang Li
Summary: The structure and properties of the self-covalent cross-linked chloromethylated polybenzimidazole (cCM-mPBI) and sulfonated polynaphthoxyphosphazene (SPNPP) composite membranes are studied. The results indicate that the self-covalent cross-linking structure improves the mechanical properties of the composite membranes and facilitates the formation of a greater level of ionic and hydrogen bonds. The high content of sulfonic acid groups, good compatibility with CM-mPBI, more alkaline sites exposed by self-cross-linking, exemption of nonconductive cross-linking agents, and a more compact hydrogen bond network synergistically contribute to the good proton conductivity of the composite membrane.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Chemical
Ping Li, Hui Guo, Peng Sun, Lei Zhang, Xulei Zhi, Zhongfang Li
Summary: By covalently cross-linking hydroxyl-terminated SPEEK (SOPEEK) and poly(triazoles-phosphazenes) (PTPP), PTPP-SOPEEK composite membranes are obtained. These membranes exhibit good physical and chemical stability, high proton conductivity over low-to-medium relative humidity, and low fuel permeation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Hui Guo, Xulei Zhi, Zhongfang Li, Lei Zhang, Peng Sun, Hongchang Pei
Summary: Crosslinkable allyl-cyanuric trisulfonic (ACSA) and allyl-mPBI (APBI) proton exchange membranes were designed and synthesized to achieve high temperature proton conductivity with good chemical stability. The synergy of two networks in the APBI-ACSA membranes provides excellent membrane stability, uniform dispersion, and high proton conductivity.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Engineering, Chemical
Hui Ding, Peng Sun, Yan Wang, Zihan Xia, Ping Li, Chengzhi Cui, Mingyu Li, Zhongfang Li
Summary: In this study, a flexible branched polymer, a cross-linkable water-soluble proton conductor, and a multi-functional cross-linker were designed to fabricate high-temperature proton exchange membranes with good comprehensive performances. The branched structure of the polymer and the cross-linker improved proton conductivity and mechanical properties, while the cross-linking process enhanced membrane strength and oxidative resistance. However, excessive cross-linking or branching can deteriorate membrane performances.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Ping Li, Hui Guo, Peng Sun, Xulei Zhi, Zhongfang Li
Summary: To enhance the proton conductivity and oxidative stability of the proton exchange membrane, a strategy utilizing cross-linked polyoxy(etidronic acid)phazenes with m-polybenzimidazole membranes (POHP-mPBI) is proposed. The POHP-mPBI cross-linked membranes exhibit good proton conductivity, mechanical strength, oxidative stability, and low transmembrane permeability. The incorporation of proton conductors (POHP) into the PBI matrix by cross-linking is an effective method to improve the performance of high-temperature proton exchange membranes (HT-PEMs).
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Applied
Shuaifeng Wang, Zhongfang Li, Wenjie Duan, Peng Sun, Jigang Wang, Qiang Liu, Lei Zhang, Yanqiong Zhuang
Summary: In this study, an efficient bifunctional oxygen catalyst, PPcFeCo/3D-G, was obtained through the 7C-7C interaction between the conjugated polymerized iron-cobalt phthalocyanine (PPcFeCo) and three-dimensional graphene (3D-G). The bimetallic synergistic effect of PPcFeCo and the 7C-7C interactions enhance the catalytic activity and durability of the catalyst. The electrochemical performance of PPcFeCo/3D-G showed high electron transfer number, excellent half-wave potential, and outstanding reversibility. The liquid zinc-air battery employing PPcFeCo/3D-G displayed high power density, specific capacity, and durability. This work has guiding significance for the preparation of high-efficiency bifunctional catalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Yuepeng Liu, Wenjie Duan, Hongchang Pei, Peng Sun, Yinggang Sun, Yanqiong Zhuang, Zhongfang Li
Summary: A Fe, Co, N, and S co-doped three-dimensional porous graphene-like catalyst (FeCo-N,S-G) is prepared using a dual template strategy, which exhibits excellent catalytic activity for oxygen reduction and evolution reactions as well as hydrogen evolution reaction. The porous structure of the catalyst facilitates high-density active site exposure and mass transfer, leading to high performance in homemade aqueous and all-solid-state flexible zinc-air batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yuepeng Liu, Zhongfang Li, Chongyun Sun, Shuaifeng Wang, Likai Wang, Xueliang Niu, Peng Sun, Shenzhi Zhang
Summary: The development of high-performance and stable catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for fuel cells. The CPMPcFe/3D-HG catalyst exhibits excellent catalytic properties, including a high half-wave potential, low overvoltage, and high electron transfer number, making it a promising candidate for metal-air batteries.
SUSTAINABLE ENERGY & FUELS
(2021)
