Article
Chemistry, Physical
Hyejin Kim, Kyuin Shim, Kyoung Eun Lee, Jeong Woo Han, Yongfa Zhu, Wonyong Choi
Summary: This study designed organic photocatalysts that can produce H2O2 without organic electron donors. The incorporation of O and P elements in CN structure (CNO, CNP, CNOP) increases visible light absorption and hinders photodecomposition of H2O2, leading to CNOP exhibiting the highest production of H2O2 using dioxygen, water, and visible light only.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Jucai Wei, Du Yuan, Xu Wu
Summary: The direct electrosynthesis of hydrogen peroxide from the air is a promising alternative to the energy-intensive anthraquinone process. However, current methods suffer from low productivity and high energy consumption. In this study, a continuous flow sulfite/air fuel cell with a sulfite depolarized anode is proposed as a direct synthesis strategy. By optimizing catalysts and cell parameters, the prototype cell achieved high selectivity and productivity, with low energy consumption. The desulfurization solution from the flue gas desulfurization process is applied as the anolyte, further enhancing hydrogen peroxide synthesis and recovering sulfur as fertilizer.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Hongjie Yu, Shaojian Jiang, Wenjie Zhan, Kai Deng, Ziqiang Wang, You Xu, Hongjing Wang, Liang Wang
Summary: A hydrogen intercalated palladium-copper metallene was constructed as an electrode material for direct formate fuel cells, resulting in enhanced anti-CO poisoning ability. The metallene exhibited significantly higher mass and specific activities than conventional catalysts in formate oxidation and ORR. The peak power and limiting current density of the metallene electrode material were considerably higher than those of traditional catalysts in DFFC applications.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Zhipeng Liu, Jinling Xue, Yinshi Li
Summary: A structurally controlled 3D flower-like PdCu nanosheet catalyst is synthesized and shows higher mass activity for anodic formate oxidation reaction and a positive shift half-wave potential for cathodic oxygen reduction reaction compared to commercial Pd/C and Pt/C catalysts. This work provides a potential strategy to improve the catalytic performance of non-Pt-based nanocatalysts.
Article
Electrochemistry
Saeid Abrari, Vahid Daneshvari-Esfahlan, Mir Ghasem Hosseini, Raana Mahmoodi, Viktor Hacker
Summary: In this study, Ni@Pd core-shell nanoparticles were successfully deposited on multi-walled carbon nanotubes as catalysts for formate oxidation reaction. The results showed that the Ni@Pd core-shell nanoparticles exhibited higher electrocatalytic activity and stability compared to Ni-Pd alloy nanoparticles on multi-walled carbon nanotubes.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Xianda Sun, Yuxuan Lou, Ya-Ling He, Yinshi Li
Summary: The study introduces an electricity-hydrogen co-produced Na-ion direct formate fuel cell, which can continuously produce electricity and hydrogen, showcasing high efficiency and renewability, indicating great potential.
JOURNAL OF POWER SOURCES
(2021)
Review
Chemistry, Physical
Songying Qu, Hao Wu, Yun Hau Ng
Summary: Hydrogen peroxide is a crucial chemical attracting attention for energy and environmental applications. The environmentally friendly solar-driven production of hydrogen peroxide, which only requires water, oxygen, and light energy, has gained the most attention. The rational design of functional photo-responsive catalysts promotes hydrogen peroxide production in photo(electro)catalytic approaches. This review systematically summarizes strategies for these catalysts and discusses prevailing hypotheses, state-of-the-art catalysts, critical challenges, and perspectives to enhance comprehension and promote interest in sustainable hydrogen peroxide production.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Applied
Heeyeon An, Hyewon Jeon, Jungyeon Ji, Yongchai Kwon, Yongjin Chung
Summary: In this study, an amine-coordinated cobalt phthalocyanine-based anodic catalyst was fabricated by a facile process to enhance the performance of HPFCs and EBCs. The addition of PEI shifted the onset potential of the oxidation reaction, improved the current density, and created a favorable microenvironment for enzyme activity, resulting in significantly improved operational durability and long-term stability of the biocatalyst. The suggested catalyst showed enhanced performance in HPFCs and EBCs, with improved maximum power densities and open-circuit voltages.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Hui Xu, Hongyuan Shang, Cheng Wang, Yukou Du
Summary: 2D Pd-based nanomaterials have emerged as potential candidates for fuel cell electrocatalysts due to their high intrinsic activity, electron mobility, and easy surface functionalization. Creating Pd- and Pd-based architectures with large surface areas, low-coordinated atoms, and high density of defects and edges is a promising strategy to enhance the electrocatalytic performance of fuel cells.
Article
Chemistry, Physical
Wenjie Wang, Zhongqing Jiang, Xiaoning Tian, T. Maiyalagan, Zhong-Jie Jiang
Summary: Ultra-low amount Pt is uniformly deposited on CoFe nanoparticles embedded nitrogen-doped carbon nanotubes grown directionally on carbon fiber cloth surface using DC-PMS technique. The designed electrode exhibits excellent trifunctional catalytic activities for ORR, HER, and MOR, and shows better catalytic performance and stability than commercial Pt/C catalysts.
Article
Energy & Fuels
Sieun Jeon, Heeyeon An, Jungyeon Ji, Yongchai Kwon, Yongjin Chung
Summary: A facile and inexpensive method is introduced to fabricate a myoglobin-mimic nanostructure by evaluating the influence of temperature conditions on the axial coordination between hemin and PEI. Different hydrogen peroxide reduction reaction mechanisms and the effect of axial ligands contribute to the improved catalytic performance under physiological conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Jing Li, Zhu Guo, Wenjie Zhang, Jing Guo, Konggang Qu, Weiwei Cai
Summary: By employing an in-situ self-confinement strategy, NiPt-Mo2C active site pairs are encapsulated in carbon cages, resulting in improved catalytic activity for methanol oxidation reaction (MOR) and alkaline hydrogen evolution reaction (HER) in direct methanol fuel cells (DMFCs) and water electrolysis technologies. The mass activity of Pt in NiPt-Mo2C@C toward HER is boosted by 33 times, while the MOR catalytic activity is improved by 10.5 times, leading to a 9-fold increase in the DMFC maximum power density.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Longgang Chu, Long Cang, Zhaoyue Sun, Xinghao Wang, Guodong Fang, Juan Gao
Summary: This study presents the construction of a superhydrophobic air breathing cathode that enhances H2O2 production efficiency. The cathode maintains stable three phase interfaces in the electrolyte and efficiently utilizes oxygen through natural air diffusion. The flow cell designed with this cathode can produce high concentrations of H2O2 in a short time, with low energy consumption and cost. This device shows promise for the in-situ production and utilization of H2O2 in the treatment of organic polluted water and soil.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Zhen Wei, Shen Zhao, Wenlu Li, Xu Zhao, Chuncheng Chen, David Lee Phillips, Yongfa Zhu, Wonyong Choi
Summary: By designing a polydopamine (PDA)-coated CdS catalyst, the artificial photosynthesis of H2O2 from water and O-2 was successfully achieved with a yield of 3.84 mM, which is 13.7 times higher than that of CdS. The dehydrogenation of catechol in PDA produces H2O2 in combination with two-electron O-2 reduction, while the photoreductive hydrogenation of o-benzoquinone regenerates catechol. The reversible redox transformation between catechol and o-benzoquinone in PDA significantly increases both the production yield and the selectivity of H2O2. PDA coating enhances the O-2 adsorption capacity, inhibits H2O2 decomposition, and improves the stability of CdS against photocorrosion.
Article
Chemistry, Physical
Zhen Wei, Shen Zhao, Wenlu Li, Xu Zhao, Chuncheng Chen, David Lee Phillips, Yongfa Zhu, Wonyong Choi
Summary: Polydopamine-coated CdS was designed as a photocatalyst for the artificial photosynthesis of H2O2 from water and oxygen. It achieved a high yield and selectivity, while also enhancing stability and inhibiting decomposition.
Article
Engineering, Environmental
Xianda Sun, Yinshi Li, Chao Xie, Mingsheng Hao, Mingjia Li, Jinling Xue
Summary: The ΔpH-DLFC enhances the thermodynamic voltage of DLFCs by utilizing neutralization energy, increasing the triple-phase boundary density, and achieving peak power densities of up to 610 mW cm-2. The stable operation and high power density demonstrate the potential for practical application.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xianda Sun, Yuxuan Lou, Ya-Ling He, Yinshi Li
Summary: The study introduces an electricity-hydrogen co-produced Na-ion direct formate fuel cell, which can continuously produce electricity and hydrogen, showcasing high efficiency and renewability, indicating great potential.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Dongxing Song, Xiang Chen, Zizhen Lin, Zhenglai Tang, Weigang Ma, Qiang Zhang, Yinshi Li, Xing Zhang
Summary: This study expands the database of 2D materials for lithium ion batteries, proposes an identification theory, establishes a usability identification framework, and predicts 215 2D materials usable for lithium ion batteries. This work enriches the choices of 2D materials, providing a general methodology to assess the usability of unexploited 2D materials.
Article
Chemistry, Physical
Na Zhou, Yinshi Li
Summary: Designing high-performance PtCo bimetal incorporated nanofibers as ORR electrocatalysts through an optimized platinum nanowires template and cobalt-containing metal-organic framework results in improved specific and mass activity, with better durability compared to commercial Pt/C catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Physics, Applied
Zizhen Lin, Yanzheng Du, Peng Li, Cheng Chi, Yang Lu, Hao Dang, Dongxing Song, Weigang Ma, Yinshi Li, Xing Zhang
Summary: In this study, we developed a strategy to achieve metallic properties in semiconductor 3D graphene films by constructing wrinkles, which has potential applications in high-power nanoelectronics. The in situ construction of 1D metallic wrinkles provides a promising candidate as metallic wire interconnects in all-carbon electronics.
APPLIED PHYSICS LETTERS
(2022)
Article
Electrochemistry
Xianhua Wu, Rui Wang, Yinshi Li
Summary: This study proposes an intelligent cyclic voltammetry analysis method to accurately capture the electrochemical parameters of carbon-based porous electrodes. It has been proven to be feasible and reliable in studying vanadium redox flow batteries and predicting their charge/discharge performance.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yuxuan Lou, Mingsheng Hao, Yinshi Li
Summary: This study utilizes machine learning (ML) to predict, analyze, and optimize the cathode catalyst layer (CCL) in proton exchange membrane fuel cells (PEMFCs). By constructing a data-driven model, the relationship between CCL structure and cell performance is investigated, and critical parameters are determined for multi-objective optimization. The optimized CCL significantly improves cell performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Na Zhou, Yinshi Li
Summary: In this study, Platinum-Iron (PtFe) nanoparticles were successfully encapsulated in the N-doped hollow carbon hemisphere matrix (NCB) without high-temperature pyrolysis, which promoted the dispersion of Pt nanoparticles and the formation of PtFe nanoalloys. The hollow carbon hemisphere structure increased the catalyst's specific surface area and active site exposure, and the modification of the carbon nano-bowl surface from predominantly Fe to a functional electrocatalyst with a primarily PtFe alloy enhanced the ORR catalytic activity and stability. The Pt3Fe/Fe3C-NCB catalyst exhibited superior ORR performance compared to commercial Pt/C.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jinling Xue, Shipei Deng, Rui Wang, Yinshi Li
Summary: An efficient and low-cost bifunctional catalyst, Fe/12Zn/Co-NCNTs, is prepared and shows excellent electrochemical activity in both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). This catalyst significantly improves open circuit voltage, peak power density, and cycle lifespan in rechargeable zinc-air flow batteries (ZAFBs).
Article
Engineering, Environmental
Jinbo Che, Fengnian Wang, Chao Song, Rui Wang, Yinshi Li
Summary: The solar-driven calcium looping process (CaL) has great potential for thermochemical energy storage, but the calcium-based particles used as energy carriers are prone to fragmentation, which significantly reduces the efficiency and stability of energy storage. In this study, a particle scale model is proposed to investigate the characteristics of energy storage performance. The model confirms that stress failure at the particle center is the main cause of energy carrier fragmentation due to high radial tensile stress. The study also explores the operation conditions and modified particle properties to improve energy storage performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Rui Wang, Chao He, Mingsheng Hao, Fazheng Chong, Zhilong Zhao, Xianhua Wu, Zhengjun Tu, Tao Fan, Yinshi Li
Summary: One of the goals in developing high-performance flow batteries is to improve the activity and durability of electrodes. In this study, a particle-bonded catalyst-modified electrode was developed based on an understanding of the interface behaviors in flow batteries. This electrode effectively combines the catalyst and electrode base using a particle-form binder, resulting in enhanced reaction kinetics and reduced mass transport resistance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Zhipeng Liu, Jinling Xue, Yinshi Li
Summary: A structurally controlled 3D flower-like PdCu nanosheet catalyst is synthesized and shows higher mass activity for anodic formate oxidation reaction and a positive shift half-wave potential for cathodic oxygen reduction reaction compared to commercial Pd/C and Pt/C catalysts. This work provides a potential strategy to improve the catalytic performance of non-Pt-based nanocatalysts.
Article
Engineering, Environmental
Jinling Xue, Zhipeng Liu, Yibin Fan, Rui Wang, Yinshi Li
Summary: In this study, a highly efficient heterojunction catalyst Fe,CoZn9+9-NO/WC was successfully synthesized and demonstrated superior performance in oxygen reduction reaction and water splitting compared to benchmark catalysts. This catalyst shows promising potential to be used in zinc-air flow batteries and overall water splitting devices, making significant contributions to the development of clean energy storage and conversion.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zizhen Lin, Hao Dang, Chunyu Zhao, Yanzheng Du, Cheng Chi, Weigang Ma, Yinshi Li, Xing Zhang
Summary: The energy-filtering effect has been successfully demonstrated in PANI/MWCNT composites, leading to enhanced thermoelectric properties. The formation of a paracrystalline PANI layer on the MWCNT network serves as a metallic percolation pathway and triggers the energy-filtering effect, resulting in improved conductivity and thermopower. The cooperative 3D carrier transport mode, including 1D metallic transport and 2D cross-interface energy-filtering transport, contributes to a significant increase in the power factors of PANI/MWCNT.
Article
Chemistry, Physical
Rui Wang, Yinshi Li, Haiying Liu, Ya-Ling He, Mingsheng Hao
Summary: A sandwich-like multi-scale pore-rich hydroxylated carbon (SPHC) with high reactivity and stability was developed for vanadium flow batteries (VFBs) and zinc-bromine flow batteries (ZBFBs). The SPHC structure provides abundant active sites and protects inner pores, leading to high electrochemical activity and stability for redox reactions. SPHC electrodes show significantly higher energy efficiencies and ultra-low decay rates, demonstrating great potential for flow batteries and other electrochemical energy storage systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
