Ms. Xiaohang Zheng

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

Ms. Xiaohang Zheng

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

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Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

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24 October 2023 in Journal of the American Chemical Society

Journal Article

Tensile Strain-Mediated Spinel Ferrites Enable Superior Oxygen Evolution Activity

Yaotian Yan

Jinghuang Lin

Keke Huang

Xiaohang Zheng

Liang Qiao

Junlei Qi

1 October 2019 in Journal of Materials Chemistry A

Journal Article

Activating and optimizing the activity of NiCoP nanosheets for electrocatalytic alkaline water splitting through the V doping effect enhanced by P vacancies

Yaotian Yan

Jinghuang Lin

Jian Cao

Shu Guo

Xiaohang Zheng

Junlei Qi

Vacancy engineering or element doping has been extensively developed to tune the electrocatalytic activity of electrocatalysts. However, it is challenging to simultaneously generate doping and defects, and insights into the structure–property relationship in vacancy-rich and doped catalysts are lacking. Herein, a V-doped NiCoP electrocatalyst is developed through utilizing the V-doping effect enhanced by P vacancies via plasma treatment. The P vacancies can enhance the V doping effect to increase the electroactive sites and regulate the electron density of the active site center. Thus, an enlarged electrochemical active area, accelerated electron transportation and promoted electronic coupling effects can be achieved. As a result, the overpotentials at a current density of 10 mA cm⁻² are 58 and 246 mV for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1 M KOH, respectively. When serving as a bifunctional electrode for overall water splitting, V-doped NiCoP with P vacancies can achieve a low voltage of 1.55 V at 10 mA cm⁻². This work highlights a feasible strategy to explore efficient electrocatalysts via the heterogeneous atom doping effect enhanced by vacancies.

5 January 2019 in Journal of Materials Chemistry A

Journal Article

Designing oxygen bonding between reduced graphene oxide and multishelled Mn₃O₄ hollow spheres for enhanced performance of supercapacitors

Henan Jia

Zhaoyue Wang

Chun Li

Xiaoqing Si

Xiaohang Zheng

Weidong Fei

Strong chemical bonds between transition metal oxides and carbon materials which enable fast electron transfer kinetics are highly required in supercapacitor electrodes. Meanwhile, hollow transition metal oxide nanostructures have promising potential for advanced energy storage applications. Herein, an oxygen vacancy assisted hydroxyl modification method is proposed to encapsulate Mn₃O₄ hollow spheres with controlled shell numbers in reduced graphene oxide (Mn₃O₄–rGO). The strong bonds between Mn₃O₄ and graphene result in fast charge transport, uniform distribution, increased active sites and enhanced structural stability. Originating from the structural features, when these materials were evaluated as electrodes for supercapacitors, Mn₃O₄–rGO shows a high specific capacitance of 561.5 C g⁻¹ with good rate performance and excellent stability with 98% retention after 10 000 cycles. In order to widen the potential application of supercapacitors, asymmetric supercapacitors (ASCs) are assembled using Mn₃O₄–rGO as positive electrodes and active carbon as negative electrodes. The ASCs exhibit a high specific capacitance of 180.2 F g⁻¹, delivering a high energy density of 72.3 W h kg⁻¹ at a power density of 864 W kg⁻¹. This surface-confined strategy may pave a way for realizing strong chemical bonds between hollow oxides and carbon-based materials for high performance supercapacitors.

4 June 2018 in Dalton Transactions

Journal Article

P-Doped NiCo₂S₄ nanotubes as battery-type electrodes for high-performance asymmetric supercapacitors

Jinghuang Lin

Yiheng Wang

Xiaohang Zheng

Haoyan Liang

Henan Jia

Jicai Feng

We have designed P-doped NiCo₂S₄ to improve the electrochemical performance of metal sulfides through a phosphidation reaction.

1 March 2020 in Journal of Colloid and Interface Science

Journal Article

Rich P vacancies modulate Ni2P/Cu3P interfaced nanosheets for electrocatalytic alkaline water splitting

Jinghuang Lin

Yaotian Yan

Tianxiong Xu

Jian Cao

Xiaohang Zheng

Junlei Qi

1 April 2020 in International Journal of Hydrogen Energy

Journal Article

Nickel-doped MoSe2 nanosheets with Ni–Se bond for alkaline electrocatalytic hydrogen evolution

Yaqian Yang

Xu Zhao

Han Mao

Rui Ning

Xiaohang Zheng

Wei Cai

About Me

Prof. Dr. Xiao Hang Zheng is Deputy director of the Department of Materials Physics and Chemistry, an associate professor and doctoral supervisor at the Harbin Institute of Technology. She received her Bachelor's degree in Material Physics Bachelor at Jilin University (2003.09-2007.07), and her Master's and Ph.D. degrees at Harbin Institute of Technology (2009.09-2018). She served as a Lecturer (2014-2018) and Master Supervisor (2018-2020) at the Department of Material Physics and Chemistry, Harbin Institute of Technology, respectively. She is the Winner of the Heilongjiang Province Outstanding Youth Fund, outstanding full-time and part-time worker of the school. She guided doctoral students to win the silver medal of the Heilongjiang Province "Internet + College Student Innovation and Entrepreneurship Competition" and the second prize of the "cleer" Cup First China Graduate Student "Dual Carbon" Innovation and Creativity Competition. She served as a young editorial board member of the journal "Powder Metallurgy Materials Science and Engineering"; invited to serve as an editor of the electrocatalysis special issue of magazines such as Frontiers in chemistry. In 2020, he was funded by the Excellent Youth Fund of Heilongjiang Natural Science Foundation. She mainly engaged in the research of basic issues and applications of advanced metal functional materials. as the first inventor.

Ms. Xiaohang Zheng

Ms. Xiaohang Zheng

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About Me