Details of the Researcher

PHOTO

Liu Tengyi
Section
Advanced Institute for Materials Research
Job title
Specially Appointed Assistant Professor(Research)
Degree

  • Ｐｈ．Ｄ．（Beihang University）

  • Ｍ．Ｓ．（Beijing University of Chemical Technology）

e-Rad No.
50987005

Research History 1

  • 2023/05 - Present
    Tohoku University　Specially-appointed Assistant Professor

Professional Memberships 3

  • The Electrochemical Society

    2025/01 - Present

  • The Chemical Society of Japan

    2025/01 - Present

  • The Electrochemical Society of Japan

    2025/01 - Present

Research Interests 2

  • Electrochemistry

  • Energy

Papers 9

  1. Surface Charge Transfer Enhanced Cobalt-Phthalocyanine Crystals for Efficient CO2-to-CO Electroreduction with Large Current Density Exceeding 1000 mA cm−2 Peer-reviewed

    Tengyi Liu, Di Zhang, Yutaro Hirai, Koju Ito, Kosuke Ishibashi, Naoto Todoroki, Yasutaka Matsuo, Junya Yoshida, Shimpei Ono, Hao Li, Hiroshi Yabu

    Advanced Science　12　(14)　2501459　2025/04

    DOI： 10.1002/advs.202501459 　

  2. Breaking the Single-Molecule Paradigm: Multilayer Cobalt Phthalocyanine/Carbon Core-Shell Structure as the Superior Active Unit for CO2-to-CO Electroreduction Peer-reviewed

    Tengyi Liu, Di Zhang, Yue Chu, Keitaro Ohashi, Yutaro Hirai, Koju Ito, Kosuke Ishibashi, Yasutaka Matsuo, Junya Yoshida, Shimpei Ono, Kazuhide Kamiya, Hao Li, Hiroshi Yabu

    Applied Catalysis B: Environment and Energy　381　125852-125852　2025

    Publisher: Elsevier BV

    DOI： 10.1016/j.apcatb.2025.125852 　

    ISSN： 0926-3373

  3. Crystalline Formation Enhances Hydrogen Evolution Reaction Property of Copper Azaphthalocyanine on Carbon Electrodes Peer-reviewed

    Kosuke Ishibashi, Tengyi Liu, Yuya Ishizaki, Shusaku Nagano, Junya Yoshida, Shimpei Ono, Yasufumi Takahashi, Akichika Kumatani, Hiroshi Yabu

    ACS Applied Energy Materials　2024/11/08

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsaem.4c02102 　

    ISSN： 2574-0962

    eISSN： 2574-0962

  4. Copper nanoclusters derived from copper phthalocyanine as real active sites for CO2 electroreduction: Exploring size dependency on selectivity ‐ A mini review

    Tengyi Liu, Hiroshi Yabu

    EcoEnergy　2024/08/09

    Publisher: Wiley

    DOI： 10.1002/ece2.57 　

    ISSN： 2835-9380

    eISSN： 2835-9399

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    Abstract The electrochemical reduction reaction of CO2 (CO2RR) holds promise for converting CO2 into valuable fuels and chemicals, particularly when powered by renewable electricity, thereby aiding in reducing atmospheric CO2 levels and addressing climate change. Copper phthalocyanine and its derivatives (Cu‐Pcs) have attracted significant attention as versatile electrocatalytic materials with high selectivity toward various hydrocarbon products. However, the real active sites of Cu‐Pcs for different products vary, and there is a lack of comprehensive summary. To address this gap, we analyze and summarize previous research, yielding the following insights: Cu‐Pcs undergo reconstruction and demetallization during CO2RR, with Cu(II) converting to Cu(0), forming transient copper nanoclusters (Cu NCs). The selectivity for CO2RR products closely correlates with the size of those derived Cu NCs. Specifically, reversible Cu NCs with ultrasmall sizes (≤2 nm), which revert to Cu‐Pcs after electrolysis, exhibit high selectivity toward CH4. As Cu NCs increase in size, there is a higher CO coverage, promoting CO generation. When Cu NCs exceed a critical threshold size (approximately 15 nm), C‐C coupling can occur, facilitating the formation of multicarbon (C2+) products. Furthermore, the structure of macrocycles, types of functional groups, and properties of carbon substrates influence the size and electron density of Cu NCs, thereby impacting the selectivity of CO2RR products.

  5. Biomass‐Derived Electrocatalysts: Low‐Cost, Robust Materials for Sustainable Electrochemical Energy Conversion

    Tengyi Liu, Hiroshi Yabu

    Advanced Energy and Sustainability Research　2023/10/06

    Publisher: Wiley

    DOI： 10.1002/aesr.202300168 　

    ISSN： 2699-9412

    eISSN： 2699-9412

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    Electrochemical energy conversion is an important strategy for addressing climate change and building a carbon‐neutral society. The use of inexpensive biomass resources to develop high‐performance catalytic materials that reduce the energy barrier of electrochemical reactions and minimize energy consumption has become a research hotspot for energy materials. Previous reviews have often categorized biomass‐derived catalysts by the biomass feedstocks used, but this classification method has major limitations because the roles of the same biomass material in different catalysts can vary. In this review, a new classification approach for biomass‐derived catalytic materials by focusing on the role of bio‐based materials in the overall catalyst system is proposed. The review is divided into three main sections, categorizing bio‐based materials by 1) the active components, 2) the carbon support, and 3) the entire catalyst. Additionally, a comprehensive summary is provided of catalytic materials at different scales, including the nanoscale, molecular scale, and single‐atom scale. It is hoped that this review will guide and inspire the future development of biomass‐derived electrocatalysts.

  6. A Tin Oxide‐Coated Copper Foam Hybridized with a Gas Diffusion Electrode for Efficient CO2 Reduction to Formate with a Current Density Exceeding 1 A cm−2

    Tengyi Liu, Keitaro Ohashi, Kaito Nagita, Takashi Harada, Shuji Nakanishi, Kazuhide Kamiya

    Small　18　(50)　2022/11

    Publisher: Wiley

    DOI： 10.1002/smll.202205323 　

    ISSN： 1613-6810

    eISSN： 1613-6829

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    Abstract The electrochemical CO2 reduction reaction (CO2RR) is a promising strategy for closing the carbon cycle. Increasing the current density (  J) for CO2RR products is a critical requirement for the social implementation of this technology. Herein, nanoscale tin–oxide‐modified copper–oxide foam is hybridized with a carbon‐based gas‐diffusion electrode (GDE). Using the resultant electrode, the Jformate is increased to −1152 mA cm−2 at −1.2 V versus RHE in 1 m KOH, which is the highest value for CO2‐to‐formate electrolysis. The formate faradaic efficiency (FEformate) reaches ≈99% at −0.6 V versus RHE. The achievement of ultra‐high‐rate formate production is attributable to the following factors: i) homogeneously‐modified Sn atoms suppressing H2 evolution and ii) the hydrophobic carbon nanoparticles on GDEs penetrating the macroporous structure of the foam causing the increase in the thickness of triple‐phase interface. Additionally, the FEformate remains at ≈70% under a high J of −1.0 A cm−2 for more than 20 h.

  7. Nickel foam supported Cr-doped NiCo2O4/FeOOH nanoneedle arrays as a high-performance bifunctional electrocatalyst for overall water splitting

    Tengyi Liu, Peng Diao

    Nano Research　13　(12)　3299-3309　2020/08/15

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s12274-020-3006-3 　

    ISSN： 1998-0124

    eISSN： 1998-0000

  8. Sulfur and selenium doped nickel chalcogenides as efficient and stable electrocatalysts for hydrogen evolution reaction: The importance of the dopant atoms in and beneath the surface

    Tengyi Liu, Peng Diao, Zheng Lin, Hailiang Wang

    Nano Energy　74　104787-104787　2020/08

    Publisher: Elsevier BV

    DOI： 10.1016/j.nanoen.2020.104787 　

    ISSN： 2211-2855

  9. Photo-catalyzed surface hydrolysis of iridium(<scp>iii</scp>) ions on semiconductors: a facile method for the preparation of semiconductor/IrOx composite photoanodes toward oxygen evolution reaction

    Qingyong Wu, Di Xu, Ning Xue, Tengyi Liu, Min Xiang, Peng Diao

    Physical Chemistry Chemical Physics　19　(1)　145-154　2017

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/c6cp06821a 　

    ISSN： 1463-9076

    eISSN： 1463-9084

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    <p>Surface hydrolysis of Ir3+ induced by photo-generated holes on n-type semiconductors was developed to prepare semiconductor/IrOx composites for water splitting.</p>

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