Article
Chemistry, Physical
Qingjia Sun, Guanxing Xu, Bingyan Xiong, Lisong Chen, Jianlin Shi
Summary: Electrocatalytic 2e(-) oxygen reduction reaction (2e(-) ORR) is a promising method for H2O2 production in acidic media. In this study, a novel and high-performance 2e(-) ORR electrocatalyst, NiSe2, was developed and the influence of different anion species on the catalyst performance was investigated. The synthesized NiSe2 exhibited outstanding 2e(-) ORR performance and long-term durability.
Article
Chemistry, Multidisciplinary
Chang Liu, Hao Li, Junsheng Chen, Zixun Yu, Qiang Ru, Shuzhou Li, Graeme Henkelman, Li Wei, Yuan Chen
Summary: The study demonstrates that divalent 3d transition metal cations can control the catalytic activity and selectivity of columbite nanoparticles for efficient electrosynthesis of hydrogen peroxide. The optimal NiNb2O6 catalyst exhibits excellent H2O2 selectivity and Faradaic efficiency in alkaline electrolyte, outperforming other transition metal oxide catalysts. In application demonstrations, NiNb2O6 shows high productivity in producing H2O2 and efficient decomposition of organic dyes, highlighting the great potential of low-cost 3d transition-metal-mediated columbite catalysts.
Article
Chemistry, Multidisciplinary
Hui Xu, Xue-Hui Lv, Hao-Yu Wang, Jin-Yu Ye, Jiayin Yuan, Yu-Cheng Wang, Zhi-You Zhou, Shi-Gang Sun
Summary: This study investigates the impact of pore structure parameters, S-BET and f(micro), on ORR activity and selectivity in both RRDE and FC. The results show that S-BET is positively correlated with ORR mass activity, while f(micro) is negatively correlated with H2O2 selectivity. These insights are important for the design of carbon materials for H2O2 synthesis.
Review
Chemistry, Multidisciplinary
Yichan Wen, Ting Zhang, Jianying Wang, Zhelun Pan, Tianfu Wang, Hiromi Yamashita, Xufang Qian, Yixin Zhao
Summary: In this Mini review, the development of devices for H2O2 electrosynthesis is summarized. The traditional anthraquinone process does not meet the requirements of sustainable and low-carbon development, while the electrocatalytic oxygen reduction reaction offers a more economical, low-carbon, and greener route for H2O2 production. However, continuous and decentralized H2O2 electrosynthesis still faces many challenges.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Yaovi Holade, Sarra Knani, Marie-Agnes Lacour, Julien Cambedouzou, Sophie Tingry, Teko W. Napporn, David Cornu
Summary: The study found that polyaniline-based materials derived from chemical oxidative polymerization showed promising selectivity and faradaic efficiency for the electro-conversion of O2 to H2O2 in an alkaline medium, providing a potential alternative for the energy-intensive anthraquinone process.
Article
Chemistry, Multidisciplinary
Junning Qian, Wei Liu, Yuting Jiang, Ling Ye, Xianbin Wei, Shibo Xi, Le Shi, Lin Zeng
Summary: A method of combining complexation precipitation and thermal treatment is used to synthesize 2D copper-tin composite nanosheets as electrocatalysts for 2e-ORR, achieving high selectivity and yield in producing H2O2. The catalyst demonstrates excellent stability and ability to remove organic pollutants, and controlling the defect concentration is crucial for improving its electrocatalytic performance.
Article
Energy & Fuels
Xiao Huang, Jingjing Zhang, Guanyu Luo, Deli Wang
Summary: By anchoring cobalt atoms on nitrogen-doped hollow carbon spheres, a highly active and selective electrocatalyst for hydrogen peroxide electrosynthesis is synthesized. The Co-NHCS catalyst shows excellent performance in acidic media with high reactivity, an ORR potential of 0.581 V at 1.0 mA cm(-2), and 90% H2O2 selectivity. The fabricated device achieves a high H2O2 output of 2980 mg l(-1) h(-1) with high Faraday efficiency.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Zhixing Wu, Mikhail Vagin, Robert Boyd, Penghui Ding, Per Leanderson, Ivan Kozyatnyk, Grzegorz Greczynski, Magnus Oden, Emma M. Bjork
Summary: This article reports a platinum group metal (PGM)-free H2O2 electrogenerator with mesoporous Cr2O3 and NiCo2O4 as electrocatalysts for oxygen reduction and evolution reactions. The electrogenerator achieves a faradic conversion rate of approximately 90% and enables the electrosynthesis of H2O2 in an alkaline medium.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Joao Paulo C. Moura, Vanessa S. Antonin, Aline B. Trench, Mauro C. Santos
Summary: In this study, the electrochemical performances of α-MnO2/Vulcan XC-72 and 8-MnO2/Vulcan XC-72 nanostructures in hydrogen peroxide (H2O2) electrosynthesis were compared. Both materials were synthesized through a simple hydrothermal route and their structures and morphologies were analyzed using various techniques. The results showed that the 1%α-MnO2/C and 3%8-MnO2/C catalysts exhibited better efficiency and selectivity in the ORR 2-electron pathway compared to pure Vulcan XC-72. Furthermore, the 1%α-MnO2/C catalyst displayed higher activity in H2O2 electrogeneration using GDE, resulting in a 48% increase in peroxide accumulation compared to pure Vulcan XC-72 GDE.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Chang Zhang, Wei Liu, Min Song, Jingjing Zhang, Feng He, Jiao Wang, Mo Xiong, Jian Zhang, Deli Wang
Summary: In this study, a pyranoid-O-dominated graphene-like nanocarbon (GLC) material with high surface area, hierarchical porous structure, and abundant edge defects was successfully constructed through the high-temperature alkali activation of cellulose-based precursor. The GLC electrocatalyst exhibited excellent 2e- ORR performance with high H2O2 productivity and ultrafast wastewater degradation ability. These findings provide new insight into the 2e- ORR selectivity of carbon-based electrocatalysts for H2O2 production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Xuan Zhao, Hao Yang, Jie Xu, Tao Cheng, Yanguang Li
Summary: This study demonstrates the preparation of bimetallic PdAu nanoframes, which exhibit excellent H2O2 production in acidic solutions and can be used for electro-Fenton reaction for the degradation of organic dyes.
ACS MATERIALS LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Xiaoxuan Yang, Yachao Zeng, Wajdi Alnoush, Yang Hou, Drew Higgins, Gang Wu
Summary: Electrochemical oxygen reduction reaction (ORR) for generating hydrogen peroxide (H2O2) is a green alternative to traditional energy-intensive processes, and single metal site catalysts have emerged as promising ORR electrocatalysts. This article summarizes recent methodologies and achievements in developing these catalysts for selective reduction of O2 to H2O2. It also emphasizes the importance of catalyst stability and solutions to improve tolerance to H2O2, and highlights the challenges in translating catalyst properties to electrode performance for practical applications.
ADVANCED MATERIALS
(2022)
Article
Electrochemistry
Jucai Wei, Xiaoyu Zou, Siqi Xing, Xu Wu
Summary: The cathodic destruction reaction restricts the ceiling concentration of H2O2 electrosynthesis. The effects of cathodic destruction reaction and H2O2 accumulation on H2O2 electrosynthesis performances are investigated. Two methods are tried to enhance the H2O2 electrosynthesis performances. With pure oxygen supplied, a maximum discharge current density of 47.95 mA cm(-2) at 0 V and a maximum power density of 2.57 mW cm(-2) at 21.54 mA cm(-2) can be achieved. It can produce 6.75 mmol l(-1) H2O2 in H2SO4 medium within 360 min, with a current efficiency of 51.34% and productivity of 0.28 mmol cm(-2) h(-1). With an external power source, the energy consumption for 1.02 g l(-1) H2O2 solution was only 0.87 kWh kg(-1), with a remarkable productivity of 0.94 mmol cm(-2) h(-1).
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Review
Chemistry, Applied
Yachao Zeng, Gang Wu
Summary: Efficient production of hydrogen peroxide can prevent epidemics and provide an environmentally-friendly solution for on-site disinfection. The review discusses the efficacy of hydrogen peroxide in disinfection and highlights key factors for achieving efficient production. Future research should focus on advanced electrocatalysts and electrolytic cell design.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Lele Cui, Bin Chen, Longshun Zhang, Chen He, Chen Shu, Hongyu Kang, Jian Qiu, Wenheng Jing, Kostya (Ken) Ostrikov, Zhenghua Zhang
Summary: This study demonstrates an anti-electrowetting carbon film electrode with self-sustained aeration, which is assembled using structurally discontinuously fractured conventional electrocatalyst films. It achieves highly selective and durable electrochemical two-electron oxygen reduction, providing a promising direction for developing cheap and scalable metal-free electrodes for industry-scale H2O2 electrosynthesis.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Jingwen Li, Min Song, Yezhou Hu, Chang Zhang, Wei Liu, Xiao Huang, Jingjing Zhang, Ye Zhu, Jian Zhang, Deli Wang
Summary: Despite the challenges posed by chloride corrosion in saline water, we have successfully developed a self-supported bimetallic phosphide electrode that exhibits excellent hydrogen evolution reaction (HER) performance and long-term stability in alkaline saline water. This work presents an effective approach for the fabrication of high-performance electrodes in alkaline saline environments.
Article
Chemistry, Multidisciplinary
Yunfeng Zhang, Yi Zhang, Wei Bao, Yaying Wang, Shikang Huo, Rui Wang, Zhenyuan Hu, Weijie Chen, Deli Wang
Summary: A new tailor-made polymeric additive, poly(ethylene phosphate acrylonitrile), has been proposed to improve the properties of carbonate electrolyte, including flame-retardance, Li-ion dissociation/transportation behavior, and a stable LiFePO4 cathode electrolyte interphase (CEI) layer. As a result, the battery achieved an ultra-stable operation of 1500 cycles at a 20C-rate with a good discharge capacity.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Shuang Wang, Zhengrong Li, Tao Shen, Deli Wang
Summary: This study proposes a method to accelerate the alkaline hydrogen evolution reaction (HER) through the preparation of RuNi nanoalloy confined within N-doped carbon shells. The optimized Ru/Ni ratio and dicyandiamide dosage result in a catalyst with an overpotential of 16 mV and a Tafel slope of 29.9 mV dec(-1), showing long-term stability over 10,000 cycles. This work provides insights into the relationship between the performance of HER and the electrochemical behavior of the intermediate adsorbed state, and offers a pathway for the rational design of efficient electrocatalysts for HER.
Article
Nanoscience & Nanotechnology
Min Song, Ming Chen, Chang Zhang, Jingjing Zhang, Wei Liu, Xiao Huang, Jingwen Li, Guang Feng, Deli Wang
Summary: The study investigates the ensemble effect on Pt/Pd chalcogenides for the two-electron ORR. Pt/Pd chalcogenides with isolated active sites were synthesized by introducing chalcogens. X-ray absorption spectroscopy reveals the change in electronic structure. The ORR selectivity transformed from a four-electron process to a two-electron process due to the change in adsorption mode and weakening of adsorption energy caused by the isolated active sites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Min Song, Wei Liu, Jingjing Zhang, Chang Zhang, Xiao Huang, Deli Wang
Summary: The two-electron route (2e(-) ORR) provides a green method for the direct production of hydrogen peroxide (H2O2) and is in need of effective catalysts with high ORR activity, 2e(-) selectivity, and stability. Single-atom catalysts (SACs) have gained significant attention for H2O2 electrosynthesis due to their unique geometric and electronic configurations. This review introduces the mechanism and theoretical predictions for 2e(-) ORR over SACs, discusses recent advances in various SACs for H2O2 electrosynthesis, and analyzes the correlation between SACs' structural features and electrocatalytic ORR performance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jingwen Li, Yezhou Hu, Xiao Huang, Ye Zhu, Deli Wang
Summary: A self-supported bimetallic phosphide heterostructure electrode coupled with an ultrathin carbon layer was constructed for the electrolysis of seawater. The electrode exhibited low overpotentials for both hydrogen and oxygen evolution reactions and exhibited stable performance for 100 hours. The unique architecture of the electrode, including the CoP-FeP heterostructure, tightly coupled carbon layer, and self-supported porous current collector, contributed to its superior overall water and seawater splitting properties.
Review
Chemistry, Physical
Shuang Wang, Tao Shen, Chang Yang, Guanyu Luo, Deli Wang
Summary: The electrocatalytic water splitting technology, especially proton exchange membrane water electrolyzers (PEMWEs), is crucial for carbon-free energy cycling. However, the challenges of high acid corrosion and anodic potential affect the development of PEMWEs. Exploring active, durable, and compatible anodic catalysts for the oxygen evolution reaction (OER) is urgent. This review summarizes the latest research progress in iridium-based electrocatalysts (IBCs) and proposes strategies to overcome the bottleneck of commercial deployment of PEMWEs.
Review
Chemistry, Physical
Jinlei Qin, Rui Wang, Pei Xiao, Deli Wang
Summary: Lithium-sulfur (Li-S) batteries are seen as promising next-generation batteries due to their high theoretical capacity and low cost. However, the electrochemistry of aprotic S is hindered by the shuttling effect and slow conversion of soluble lithium polysulfides (LiPSs). Various electrocatalysts have been developed to improve the conversion kinetics of LiPSs, with heteroatom doping and polar catalyst incorporation playing an important role in overcoming these limitations.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jingwen Li, Min Song, Yezhou Hu, Ye Zhu, Jian Zhang, Deli Wang
Summary: This paper reports a hybrid heterostructure electrode based on Ni3N and NiFeP over Fe foam substrate (Ni3N|NiFeP/FF), with 3D-interconnected hierarchical porous architecture, achieving low overpotentials in 1 m KOH, 30 wt% KOH, and alkaline simulated seawater conditions, with excellent durability. The hybrid heterostructure ensures low energy barriers at catalytic active sites, and the 3D-interconnected hierarchical porous architecture facilitates fast mass/ions/electrons transformation, contributing to superb water splitting performance. COMSOL simulations confirm the multiple merits of the designed electrode during water electrocatalysis. This work provides a new strategy in the design and engineering of high-performance electrodes for industrial water electrolysis.
Article
Energy & Fuels
Xiao Huang, Jingjing Zhang, Guanyu Luo, Deli Wang
Summary: By anchoring cobalt atoms on nitrogen-doped hollow carbon spheres, a highly active and selective electrocatalyst for hydrogen peroxide electrosynthesis is synthesized. The Co-NHCS catalyst shows excellent performance in acidic media with high reactivity, an ORR potential of 0.581 V at 1.0 mA cm(-2), and 90% H2O2 selectivity. The fabricated device achieves a high H2O2 output of 2980 mg l(-1) h(-1) with high Faraday efficiency.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Rui Wang, Jinlei Qin, Fei Pei, Zhizhan Li, Pei Xiao, Yunhui Huang, Lixia Yuan, Deli Wang
Summary: Ni single atoms on hollow carbon nanosheet-assembled flowers (Ni-NC) were synthesized via a pyrolysis-adsorption process to address the sluggish conversion kinetics and shuttling behavior of lithium polysulfides (LiPSs) in lithium-sulfur (Li-S) batteries. The Ni-NC-modified separator showed enhanced confinement-catalysis ability and suppressed shuttling of LiPSs, resulting in a Li-S battery with high initial capacity and cycling stability. This work presents a facile catalyst design strategy for high-performance Li-S batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Applied
Qian Zhang, Tao Shen, Min Song, Shuang Wang, Jialin Zhang, Xiao Huang, Shanfu Lu, Deli Wang
Summary: This study presents the design of high-entropy intermetallic (HEI) L12-Pt(FeCoNiCuZn)3 as an electrocatalyst to enhance the stability of Pt-based cathodes for proton exchange membrane fuel cells (PEMFCs). The Pt(FeCoNiCuZn)3/C nanoparticles demonstrate significantly improved stability and activity compared to Pt/C and PtCu3/C catalysts. Moreover, the Pt(FeCoNiCuZn)+3/C catalyst exhibits excellent stability even under high-temperature conditions in fuel cells.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Engineering, Environmental
Min Song, Faqiang Li, Qian Zhang, Tao Shen, Guanyu Luo, Dinggen Li, Deli Wang
Summary: Controlling the crystal phase of intermetallics has been proven to enhance the performance of oxygen reduction reaction (ORR). In this study, structure ordered Pt-Mn intermetallics with face-centered cubic Pt3Mn and face-centered tetragonal PtMn were synthesized and the PtMn intermetallics exhibited higher activity and better structural stability due to the rational control of crystal phase.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jiang Zhu, Lulu An, Xiangyang Li, Kevin Iputera, Ru-Shi Liu, Jinlong Yang, Deli Wang, Xu Zhao
Summary: This work presents a facile strategy to anchor isolated Pd atoms on Ti3C2Tx MXene for accelerated kinetics in alkaline hydrogen evolution reaction (HER). Mechanism studies suggest that Pd1-Ti3C2Tx can enhance H2O adsorption and dissociation, as well as optimize hydrogen adsorption on Ti3C2Tx MXene. Consequently, Pd1-Ti3C2Tx exhibits superior catalytic performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jinlei Qin, Rui Wang, Pei Xiao, Deli Wang
Summary: In this study, a dual-engineering strategy of superlattice and sulfur-vacancy engineering was used to construct a catalytic material for lithium polysulfides (LiPSs) conversion. This material exhibited high rate performance and low capacity decay rate, and showed potential for practical applications in Li-S batteries.
