文献类型：期刊文献

英文题名：Bimetallic carbides embedded in heteroatom-doped carbon nanotubes for efficient electrocatalytic hydrogen evolution reaction and high-performance lithium storage

作者：Zhao, Zejun[1];Zhu, Zhixiao[1];Wang, Fang[1];Li, Sijia[1];Bao, Xiaobing[1];Zhang, Leilei[2];Lin, Sen[3];Yang, Yong[1]

机构：[1]Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;[2]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Key Lab Fiber Reinforced Light Composite, Xian 710072, Shaanxi, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2021

卷号：415

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20210909983219);WOS:【SCI-EXPANDED(收录号:WOS:000643728400003)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 51902266) , the Fundamental Research Funds for the Central Universities (No.31020195C001, No.310201QD0410) , Natural Science Foundation of Shaanxi (2020JQ143) . The Project supported by the Research Fund of the State Key Laboratory of Solidification Processing (NPU) , China (Grant No. 2019-TS-12 and No. SKLSP202004) . We would like to thank the Analytical & Testing Center of Northwestern Polytechnical University and TEM characterizations. The authors thank the METTLER TOLEDO company for the balance instrument.

语种：英文

外文关键词：Sacrifice-template; Organic-inorganic compounds; Bimetallic carbides; Electrocatalytic hydrogen evolution; Lithium ions storage

摘要：A sacrifice-template strategy combined with carbonization treatment was rationally designed to fabricate tubular-like carbon nanotubes coupled with ultrasmall Mo-W bimetallic carbides for boosting electrocatalytic hydrogen evolution and lithium ions storage. Specifically, metal chelating coordination reaction and the dissolution of template undergo simultaneously under weak alkaline condition, thus leading to the formation of the hollow Mo-W-polydopamine (MoW-PDA) hybrid nanotubes. After carbonization, ultrasmall Mo-W bimetallic carbides embedded in the heteroatom (N, P)-codoped carbon nanotubes (MoxW2-xC/N, P-codoped CNTs) endow to prevent the aggregation between nanoparticles and provide more active sites. As a proof of concept, MoxW2xC/N, P-codoped CNTs exhibited outstanding electrocatalytic activity toward hydrogen evolution reaction with a low overpotential and steady durability in acidic and alkaline solutions. Moreover, MoxW2-xC/N, P-codoped CNTs displayed extraordinary lithium storage performance, which delivered decent reversible capacities of 560.9 mAh g-1 and 366.6 mAh g-1 at 1.0 A g-1 and 5.0 A g-1 after 1000 cycles, respectively, one of best performances for metal carbide-based anode. This work highlights a novel strategy to fabricate bifunctional carbides toward efficient electrocatalytic reaction and lithium ions storage.