Browsing Engineering (Faculty of) by Author "Chen, Zhongwei"
Now showing items 1-11 of 11
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3D N-doped hybrid architectures assembled from 0D T-Nb2O5 embedded in carbon microtubes toward high-rate Li-ion capacitors
Tolami Hemmati, Sahar; Li, Ge; Wang, Xiaolei; Ding, Yuanli; Pei, Yu; Yu, Aiping; Chen, Zhongwei (Elsevier, 2019-02)Herein, a unique nitrogen-doped T-Nb2O5/tubular carbon hybrid structure in which T-Nb2O5 nanoparticles are homogeneously embedded in an in-situ formed nitrogen-doped microtubular carbon is synthesized, utilizing a facile ... -
Aqueous intercalation-type electrode materials for grid-level energy storage: Beyond the limits of lithium and sodium
Xing, Zhenyu; Wang, Shun; Yu, Aiping; Chen, Zhongwei (Elsevier, 2018-08-01)Intermittent, fluctuational, and unpredictable features of renewable energy require grid-level energy storage (GES). Among various types of GES, aqueous electrochemical storage is undoubtedly the most promising method due ... -
Bifunctionally active and durable hierarchically porous transition metal-based hybrid electrocatalyst for rechargeable metal-air batteries
Seo, Min Ho; Park, Moon Gyu; Lee, Dong Un; Wang, Xiaolei; Ahn, Wook; Noh, Seung Hyo; Choi, Sung Mook; Cano, Zachary P.; Han, Byungchan; Chen, Zhongwei (Elsevier, 2018-12-30)In this work, we show an effective strategy combining experimental and computational methods to explore and clarify rational design approaches utilizing transition metals for enhanced electrocatalysis of oxygen reactions. ... -
Breaking Free from Cobalt Reliance in Lithium-Ion Batteries
Gourley, Storm William D.; Or, Tyler; Chen, Zhongwei (Elsevier, 2020-09)The exponential growth in demand for electric vehicles (EVs) necessitates increasing supplies of low-cost and high-performance lithium-ion batteries (LIBs). Naturally, the ramp-up in LIB production raises concerns over raw ... -
Embellished hollow spherical catalyst boosting activity and durability for oxygen reduction reaction
Xu, Pan; Zhang, Jing; Jiang, Gaopeng; Hassan, Fathy Mohamed; Choi, Ja-Yeon; Fu, Xiaogang; Zamani, Pouyan; Yang, Lijun; Banham, Dustin; Ye, Siyu; Chen, Zhongwei (Elsevier, 2018-09)Transition metals hybridized to heteroatom doped carbon material can be regarded as the most promising non-noble candidate for boosting the sluggish kinetics of oxygen reduction reaction (ORR). However, it has always been ... -
Facile solid-state synthesis of eco-friendly sodium iron silicate with exceptional sodium storage behaviour
Kaliyappan, Karthikeyan; Chen, Zhongwei (Elsevier, 2018-09-01)It is crucial to develop stable energy sources for rechargeable sodium-ion batteries using simple synthesis methods. Herein, we report a facile route for synthesizing phase-pure carbon-coated Na2FeSiO4 polyanionic cathodes ... -
An ion conductive polyimide encapsulation: New insight and significant performance enhancement of sodium based P2 layered cathodes
Kaliyappan, Karthikeyan; Li, Gaoran; Yang, Lin; Bai, Zhengyu; Chen, Zhongwei (Elsevier, 2019-11)It is essential to stabilize the surface of P2 layered cathode materials at high cut-off voltages (>4.3 V) in order to construct high-energy sodium ion batteries (SIB) that are promising for commercial application. When ... -
Metal-organic frameworks derived platinum-cobalt bimetallic nanoparticles in nitrogen-doped hollow porous carbon capsules as a highly active and durable catalyst for oxygen reduction reaction
Ying, Je; Li, Jing; Jiang, Gaopeng; Cano, Zachary Paul; Ma, Zhong; Zhong, Cheng; Su, Dong; Chen, Zhongwei (Elsevier, 2018-06-05)Pt-based nanomaterials are regarded as the most efficient electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). However, widespread adoption of PEMFCs requires solutions ... -
Nitrogen-doped hollow porous carbon polyhedrons embedded with highly dispersed Pt nanoparticles as a highly efficient and stable hydrogen evolution electrocatalyst
Ying, Jie; Jiang, Gaopeng; Cano, Zachary Paul; Han, Lei; Yang, Xiao-Yu; Chen, Zhongwei (Elsevier, 2017-10-01)The hydrogen evolution reaction (HER) is a promising alternative method of producing clean and renewable hydrogen resources. Although Pt-based nanomaterials are the most efficient catalysts for HER, their poor stability ... -
Recessed deposition of TiN into N-doped carbon as a cathode host for superior Li-S batteries performance
Xing, Zhenyu; Li, Gaoran; Sy, Serubbabel; Chen, Zhongwei (Elsevier, 2018-12-01)In this work, we put forward a novel cathode host for Li-S batteries by loading titanium nitride (TiN) nanoparticles into the pores of N-doped carbon as a proof-of-concept. The selection of TiN arises from its strong binding ... -
Spontaneous weaving: 3D porous PtCu networks with ultrathin jagged nanowires for highly efficient oxygen reduction reaction
Ying, Jie; Jiang, Gaopeng; Cano, Zachary Paul; Ma, Zhong; Chen, Zhongwei (Elsevier, 2018-11-15)We report a simple and efficient surfactant-free method to prepare 3D porous PtCu networks with ultrathin jagged nanowires and controllable composition. The morphological evolution and the influential effects of the important ...