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912 results on '"Wu, Zhong-Shuai"'

42. Efficient Electrocatalytic Oxidation of Glycerol to Formate Coupled with Nitrate Reduction over Cu‐Doped NiCo Alloy Supported on Nickel Foam.

Author

Li, Chenyang, Li, Hao, Zhang, Bo, Li, Huan, Wang, Yi, Wang, Xiao, Das, Pratteek, Li, Yuejiao, Wu, Xianhong, Li, Yifan, Cui, Yi, Xiao, Jianping, and Wu, Zhong‐Shuai

Subjects
CATALYST supports, HYDROGEN evolution reactions, COPPER, NICKEL catalysts, NICKEL alloys
Abstract

Electrooxidation of biomass‐derived glycerol which is regarded as a main byproduct of industrial biodiesel production, is an innovative strategy to produce value‐added chemicals, but currently showcases slow kinetics, limited Faraday efficiency, and unclear catalytic mechanism. Herein, we report high‐efficiency electrooxidation of glycerol into formate via a Cu doped NiCo alloy catalyst supported on nickel foam (Cu−NiCo/NF) in a coupled system paired with nitrate reduction. The designed Cu−NiCo/NF delivers only 1.23 V vs. RHE at 10 mA cm−2, and a record Faraday efficiency of formate of 93.8 %. The superior performance is ascribed to the rapid generation of NiIII−OOH and CoIII−OOH species and favorable coupling of surface *O with reactive intermediates. Using Cu−NiCo/NF as a bifunctional catalyst, the coupled system synchronously produces NH3 and formate, showing 290 mV lower than the coupling of hydrogen evolution reaction, together with excellent long‐term stability for up to 144 h. This work lays out new guidelines and reliable strategies from catalyst design to system coupling for biomass‐derived electrochemical refinery. [ABSTRACT FROM AUTHOR]

Published
2024
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43. 3D Printed Sodiophilic Nb2CTx/Reduced Graphene Oxide Monoliths Enable Long Cycle Stability of Sodium Metal Anodes.

Author

Liu, Yueyue, Wang, Hui, Pan, Denghui, Hou, Jingrui, Yao, Jingjing, Kong, Dezhi, Xu, Tingting, Shi, Yumeng, Li, Xinjian, Yang, Hui Ying, Wang, Ye, and Wu, Zhong‐Shuai

Subjects
DENDRITIC crystals, THREE-dimensional printing, GRAPHENE oxide, ANODES, AEROGELS, SUPERIONIC conductors
Abstract

As a promising anode material for Na‐metal batteries, the practical application of Na metal is severely hindered due to the formation of the notorious dendrite and unstable solid‐electrolyte interface (SEI). To address these issues, a direct‐ink writing (DIW) 3D printing technology is proposed to construct an artificial 3D hierarchical porous sodiophilic Nb2CTx/reduced graphene‐oxide (Nb2CTx/rGO) aerogel monolith, which is employed as the matrix of Na metal anode. Benefiting from the homogeneous ion flux and exceptional sodiophilic features, the Nb2CTx nanoflakes embedded within the 3D scaffold regulate the uniform deposition of metallic Na with a stable SEI layer, achieving an ultralong cycle lifespan of 3000 h at 1 mA cm−2 with 1 mAh cm−2 and an impressive Coulombic efficiency of 99.68% over extended lifespan of 7064 h. Further, the in‐depth characterization analysis proves that the formed stable SEI layer consists of an inorganic NaF accumulated in the inner layer and loosely‐bound organic species in the outer layer. Remarkably, when integrated into a Na metal full cell, the reversible capacity reaches 90.22 mAh g−1 after 200 cycles at 100 mA g−1. The work provides a promising strategy to utilize Na metal anodes with long cycle lifespan for next‐generation sodium metal batteries. [ABSTRACT FROM AUTHOR]

Published
2024
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44. Generalized Interfacial Assembly of 2D Mesoporous Heterostructures for High‐Energy Solid‐State Micro‐Supercapacitors.

Author

Qin, Jieqiong, Zhang, Hongtao, Bai, Tiesheng, Liu, Xiaohua, Ren, Yunlai, Xie, Lixia, Wang, Xiao, Zheng, Shuanghao, Zhou, Feng, and Wu, Zhong‐Shuai

Subjects
ENERGY density, ENERGY storage, MESOPOROUS materials, HIGH voltages, HETEROSTRUCTURES
Abstract

2D materials have garnered considerable interest in various applications from catalysis to energy storage. However, the self‐stacking and poor air stability of 2D materials (e.g., MXene) leads to serious performance degradation, in particular, of micro‐supercapacitors (MSCs) with narrow working voltage and low energy density. Here, a universal confined interfacial assembly strategy is demonstrated for controllably synthesizing a series of 2D mesoporous heterostructures for high‐voltage and high‐energy ionogel‐based MSCs. This assembly process reveals accurate controllability and extraordinary versatility, endowing the 2D mesoporous heterostructures with highly adjustable mesopore size (7–22 nm), tunable thickness (15–29 nm), variable carbon precursors (including oligochitosan, glucose, and sucrose), and replaceable 2D substrates (e.g., MXene, graphene, BN, and MoS2). As a proof of concept, the 2D mesoporous carbon@MXene based MSCs with ionic liquid ionogel electrolyte deliver ultrahigh voltage of 3.7 V, superior areal energy density of 181.3 µWh cm−2, excellent flexibility with 99% of capacitance retention at 180°, and excellent modular self‐integration for variable voltage/capacitance output, surpassing most reported MXene based MSCs. Therefore, this work will open a novel available paradigm for scalable fabrication of 2D mesoporous materials to target high‐performance and functional microscale power source. [ABSTRACT FROM AUTHOR]

Published
2024
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