@article{Du2023, 
author = {Yue Du and Wenxue Chen and Lina Zhou and Rui Hu and Shizhu Wang and Xueqing Li and Yunlong Xie and Lun Yang and Yisi Liu and Zhenhui Liu},
title = {One-step, in situ formation of WN-W2C heterojunctions implanted on N doped carbon nanorods as efficient oxygen reduction catalyst for metal-air battery},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {8773-8781},
keywords = {oxygen reduction reaction, WN-W2C heterojunctions, polyoxometalate@polyaniline composite, metal-air battery},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5501-9},
doi = {10.1007/s12274-023-5501-9},
abstract = {Transition metal nitrides and carbides have attracted intensive attentions in metal-air battery application due to their metallic electron transport behavior and high chemical stability toward the oxygen reduction reaction (ORR). Herein, the polyoxometalate@polyaniline composite derived WN-W2C heterostructured composite (WN-W2C@pDC) has been fabricated through an in situ nitriding-carbonization strategy, with WN-W2C nanoparticles implanted on N doped carbon nanorods. As-fabricated WN-W2C@pDC demonstrates prominent electrocatalytic performance towards ORR and excellent cycling stability in metal-air battery, which possesses positive half-wave potential and large diffusion limiting current density (0.81 V and 5.8 mA·cm−2). Moreover, it demonstrates high peak power density of 157.4 mW·cm−2 as Al-air primary cathode and excellent stability at the discharge–charge test (> 500 h) of Zn-air secondary battery. The excellent activity and durability of WN-W2C@pDC catalyst should be attributed to the combined effect of intimate WN-W2C heterointerfaces, unique embedded nanoparticles structure, and excellent electrical media of N doped carbon, confirmed by a series of contrast experiments.}
}