Single-atomic Mn sites coupled with Fe3C nanoparticles encapsulated in carbon matrixes derived from bimetallic Mn/Fe polyphthalocyanine conjugated polymer networks for accelerating electrocatalytic oxygen reduction

双金属片 催化作用 材料科学 纳米颗粒 吸附 光化学 化学工程 化学 纳米技术 物理化学 有机化学 工程类
作者
Yuan Pan,Min Li,Wanliang Mi,Minmin Wang,Junxi Li,Yilin Zhao,Xuelu Ma,Bin Wang,Wei Zhu,Zhiming Cui,Hailiang Yin,Yunqi Liu
出处
期刊:Nano Research [Springer Nature]
卷期号:15 (9): 7976-7985 被引量:18
标识
DOI:10.1007/s12274-022-4502-4
摘要

The construction of robust coupling catalysts for accelerating electrocatalytic oxygen reduction reaction (ORR) through the modulation of the electronic structure and local atomic configuration is critical but remains challenging. Herein, we report a facile and effective isolation-polymerization-pyrolysis (IPP) strategy for high-precision synthesis of single-atomic Mn sites coupled with Fe3C nanoparticles encapsulated in N-doped porous carbon matrixes (Mn SAs/Fe3C NPs@NPC) catalyst derived from predesigned bimetallic Fe/Mn polyphthalocyanine (FeMn-BPPc) conjugated polymer networks by solid-phase reaction approach. Benefiting from the synergistic effects between the single-atomic Mn-N4 sites and Fe3C NPs as well as the confinement effect of NPC, the Mn SAs/Fe3C NPs@NPC catalyst exhibited excellent electrocatalytic activity and stability for ORR. The assembled Zn-air battery displayed larger power density of 186 mW·cm−2 than that of Pt/C + Ir/C-based battery. It also exhibits excellent stability without obvious voltage change after 106 cycles with 36 h. Combing in-situ Raman spectra with in-situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) characterization results indicated that the Mn-N4 site as an active site for the O2 adsorption-activation process, which effectively facilitates the generation of key *OOH intermediates and *OH desorption to promote the multielectron reaction kinetics. Theoretical calculation reveals that the excellent electrocatalytic performance originates from the charge redistribution and the d orbital shift resulting from Mn-Fe bond, which buffers the activity of ORR through the electron reservoir capable of electron donation or releasing. This work paves a novel IPP strategy for constructing high-performance coupling electrocatalyst towards the ORR for energy conversion devices.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
英姑应助冰城蹦极毛豆采纳,获得10
1秒前
小李应助hitagi采纳,获得10
2秒前
大个应助qiuqiu120234978采纳,获得10
2秒前
。.。发布了新的文献求助10
2秒前
3秒前
Ftucyctucutct完成签到,获得积分10
3秒前
wroy完成签到,获得积分10
3秒前
顾矜应助ccboom采纳,获得10
4秒前
旁阡陌发布了新的文献求助10
4秒前
4秒前
6秒前
霍旭芳完成签到,获得积分10
6秒前
薛然兮完成签到,获得积分10
6秒前
6秒前
晓星残月发布了新的文献求助10
7秒前
7秒前
葡萄茶茶果完成签到,获得积分10
8秒前
大模型应助csuxxm采纳,获得10
9秒前
取法乎上完成签到 ,获得积分10
9秒前
zz发布了新的文献求助10
9秒前
667发布了新的文献求助10
9秒前
默默的铃铛完成签到,获得积分10
10秒前
10秒前
饿m完成签到 ,获得积分10
11秒前
隐形曼青应助细腻驳采纳,获得10
11秒前
11秒前
orixero应助科研通管家采纳,获得10
12秒前
科研通AI2S应助科研通管家采纳,获得10
12秒前
赘婿应助科研通管家采纳,获得30
12秒前
深情安青应助科研通管家采纳,获得10
12秒前
罗_应助科研通管家采纳,获得30
12秒前
wanci应助科研通管家采纳,获得10
12秒前
SciGPT应助科研通管家采纳,获得10
12秒前
星辰大海应助科研通管家采纳,获得10
12秒前
FashionBoy应助科研通管家采纳,获得10
13秒前
push上岸完成签到,获得积分10
13秒前
隐形曼青应助科研通管家采纳,获得10
13秒前
Ava应助科研通管家采纳,获得10
13秒前
科研通AI2S应助科研通管家采纳,获得10
13秒前
桐桐应助科研通管家采纳,获得10
13秒前
高分求助中
Sustainability in Tides Chemistry 2000
Microlepidoptera Palaearctica, Volumes 1 and 3 - 13 (12-Volume Set) [German] 1122
Дружба 友好报 (1957-1958) 1000
The Data Economy: Tools and Applications 1000
Mantiden - Faszinierende Lauerjäger – Buch gebraucht kaufen 700
PraxisRatgeber Mantiden., faszinierende Lauerjäger. – Buch gebraucht kaufe 700
A Dissection Guide & Atlas to the Rabbit 600
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3101379
求助须知:如何正确求助?哪些是违规求助? 2752746
关于积分的说明 7620795
捐赠科研通 2405017
什么是DOI,文献DOI怎么找? 1276094
科研通“疑难数据库(出版商)”最低求助积分说明 616692
版权声明 599058