文献类型：期刊文献

英文题名：Stoichiometric ratio-modulated nickel sulfides nanosheet arrays for electrocatalytic oxygen reduction reaction toward hydrogen peroxide production

作者：Chen, Yuyuan[1];Cai, Fangfang[3];Hu, Xia[2];Lin, Sijie[1];Ma, De-Kun[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China;[3]Wenzhou Univ, Zhejiang Key Lab Carbon Mat, Wenzhou 325027, Peoples R China

年份：2024

卷号：355

外文期刊名：MATERIALS LETTERS

收录：SCI-EXPANDED(收录号：WOS:001110814000001)、、EI(收录号：20234615045122)、Scopus(收录号：2-s2.0-85176143029)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 52371196 and 21673160) and startup funds of Shaoxing University.

语种：英文

外文关键词：Nickel sulfides; Nanoparticles; X-ray techniques; Oxygen reduction reaction

外文摘要：Nickel sulfides (Ni2S3, NiS, and NiS2) nanosheets (NSs) with different stoichiometric ratios were synthesized through low-temperature chemical conversion routes. Among them, the as-synthesized NiS2 NSs showed the best electrocatalytic ORR activity toward H2O2 production because of large electrochemically active surface area, small interfacial charge transfer resistance, and high 2e(-) reaction process selectivity. In addition, the as-synthesized NiS2 NSs showed good durability and electrocatalytic inertness to the decomposition of H2O2. The stoichiometric ratios engineering provided a new strategy for designing highly efficient electrocatalysts toward H2O2 generation.