One⁃Step Synthesis of Co@CNT/CN Nanocomposites and Their Oxygen Evolution Properties

doi:10.12422/j.issn.1672-6952.2024.05.006

Abstract

Abstract:

Co@CNT/CN nanocomposites were obtained by a simple one-pot co?precipitation method using dicyandiamide, glucose and cobalt nitrate as raw materials. The effect of carbon nanotubes (CNTs) on the catalytic activity of Co was investigated by X-ray diffraction (XRD) and electrochemical tests. The results show that Co@CNT/CN can be obtained only at the calcination temperature of 850 ℃. And after electrochemical performance test, it was found that the electrocatalytic activity of Co@CNT/CN material with carbon nanotubes was significantly higher than that of other samples, mainly because carbon nanotubes have special conductivity, but also can promote the separation of Co elemental, reduce the agglomeration phenomenon, so as to obtain higher electrocatalytic activity.

Key words: Electrocatalysis, Oxygen evolution reaction, Cobalt elemental, Carbon nanotubes

摘要：

通过简单的一锅共沉淀法，以双氰胺、葡萄糖和硝酸钴为原料，最终获得了Co@CNT/CN纳米复合材料；利用X射线衍射(XRD)、电化学测试等手段，研究了碳纳米管(CNTs)对Co单质催化活性的影响。结果表明，Co@CNT/CN纳米复合材料可以在煅烧温度为850 ℃的条件下得到；具有碳纳米管的Co@CNT/CN材料存在特殊的导电性，可促进Co单质的分离，降低团聚现象的发生，从而获得较高的电催化活性，其电催化活性明显高于其他样品。

关键词: 电催化, 析氧反应, 钴单质, 碳纳米管

CLC Number:

TQ15

Wencai ZHANG, Yajuan CHEN, Xiaohong SHI, Shuijiang MOU, Jing TANG, Weijun LI. One⁃Step Synthesis of Co@CNT/CN Nanocomposites and Their Oxygen Evolution Properties[J]. Journal of Liaoning Petrochemical University, 2024, 44(5): 38-43.

张文才, 陈雅娟, 石小红, 牟水江, 唐静, 李维军. 一步合成Co@CNT/CN纳米复合材料及其析氧性能[J]. 辽宁石油化工大学学报, 2024, 44(5): 38-43.

Figures/Tables 8

Fig.1 SEM images of Co/CN as sintered at 700 ℃

Fig.2 SEM images of Co@CNT/CN nanocomposites as sintered at 850 ℃

Fig.3 XRD images of Co@CNT/CN nanocomposites

Fig.4 XPS images of Co@CNT/CN nanocomposites

Fig.5 TEM image of Co/CN sintered at 700 ℃

Fig.6 TEM image of Co@CNT/CN nanocomposites sintered at 850 ℃

Fig.7 Electrochemical performance testing of Co@CNT/CN nanocomposites

Fig.8 Stability testing of Co@CNT/CN nanocomposites

References 25

1	CHENG F Y， CHEN J. Metal⁃air batteries： From oxygen reduction electrochemistry to cathode catalysts［J］. Chemical Society Reviews， 2012， 41（6）： 2172⁃2192.
2	SUEN N T， HUNG S F， QUAN Q， et al. Electrocatalysis for the oxygen evolution reaction： Recent development and future perspectives［J］. Chemical Society Reviews， 2017， 46（2）： 337⁃365.
3	SUNTIVICH J， GASTEIGER H A， YABUUCHI N， et al. Design principles for oxygen⁃reduction activity on perovskite oxide catalysts for fuel cells and metal⁃air batteries［J］. Nature Chemistry， 2011， 3（7）： 546⁃550.
4	关扬，闫飞，黄亮亮，等. Pt负载Li₂Co₂O₄的合成及其析氧性能研究［J］. 辽宁石油化工大学学报， 2018， 38（5）： 30⁃34.
	GUAN Y， YAN F， HUANG L L， et al. Synthesis of Pt loaded Li₂Co₂O₄ and its oxygen evolution performance［J］. Journal of Liaoning Shihua University， 2018， 38（5）： 30⁃34.
5	BU L Z， ZHANG N， GUO S J， et al. Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis［J］. Science， 2016， 354（6318）： 1410⁃1414.
6	LI P S， WANG M Y， DUAN X X， et al. Boosting oxygen evolution of single⁃atomic ruthenium through electronic coupling with cobalt⁃iron layered double hydroxides［J］. Nature Communications， 2019， 10（1）： 1711.
7	张瑀净，张宝山，孙洁. 电解水制氢技术及其催化剂研究进展［J］. 石油化工高等学校学报， 2022， 35（6）： 19⁃27.
	ZHANG Y J， ZHANG B S， SUN J. Progress in hydrogen production by water electrolysis and its electrocatalysts［J］. Journal of Petrochemical Universities， 2022， 35（6）： 19⁃27.
8	SHI Q， LIU Q， MA Y， et al. High⁃performance trifunctional electrocatalysts based on FeCo/Co₂P hybrid nanoparticles for zinc⁃air battery and self⁃powered overall water splitting［J］. Advanced Energy Materials， 2020， 10（10）： 1903854.
9	YANG J， WANG X， LI B， et al. Novel iron/cobalt⁃containing polypyrrole hydrogel⁃derived trifunctional electrocatalyst for self⁃powered overall water splitting［J］. Advanced Functional Materials， 2017， 27（17）： 1606497.
10	李志学，杨占旭. 共沉淀法制备Co₉S₈/C材料以及性能研究［J］. 辽宁石油化工大学学报， 2020， 40（2）： 1⁃5.
	LI Z X， YANG Z X. Preparation and properties of Co₉S₈/C materials by coprecipitation method［J］. Journal of Liaoning Petrochemical University， 2020， 40（2）： 1⁃5.
11	CAO X C， YAN W N， JIN C， et al. Surface modification of MnCo₂O₄ with conducting polypyrrole as a highly active bifunctional electrocatalyst for oxygen reduction and oxygen evolution reaction［J］. Electrochimica Acta， 2015， 180： 788⁃794.
12	GAO Y， ZHAO H， CHEN D J， et al. In situ synthesis of mesoporous manganese oxide/sulfur⁃doped graphitized carbon as a bifunctional catalyst for oxygen evolution/reduction reactions［J］. Carbon， 2015， 94： 1028⁃1036.
13	KIM J G， KIM Y， NOH Y， et al. MnCo₂O₄ nanowires anchored on reduced graphene oxide sheets as effective bifunctional catalysts for Li⁃O₂ battery cathodes［J］. ChemSusChem， 2015， 8（10）： 1752⁃1760.
14	YE D X， WU T， CAO H M， et al. Electrocatalysis of both oxygen reduction and water oxidation using a cost⁃effective three⁃dimensional MnO₂/graphene/carbon nanotube［J］. RSC Advances， 2015， 5（34）： 26710⁃26715.
15	YEON J S， KO Y H， PARK T H， et al. Multidimensional hybrid architecture encapsulating cobalt oxide nanoparticles into carbon nanotube branched nitrogen⁃doped reduced graphene oxide networks for lithium⁃sulfur batteries［J］. Energy & Environmental Materials， 2022， 5（2）： 555⁃564.
16	许雪容，彭祥. 层状双金属氢氧化物电催化剂的合成与应用研究进展［J］. 石油化工高等学校学报， 2022， 35（5）： 1⁃11.
	XU X R， PENG X. Research progress in preparation and application of layered double hydroxides electrocatalysts［J］. Journal of Petrochemical Universities， 2022， 35（5）： 1⁃11.
17	SUN H， LI Q， LIAN Y B， et al. Highly efficient water splitting driven by zinc⁃air batteries with a single catalyst incorporating rich active species［J］. Applied Catalysis B： Environmental， 2020， 263： 118139.
18	ZHANG H B， MA Z J， DUAN J J， et al. Active sites implanted carbon cages in core⁃shell architecture： Highly active and durable electrocatalyst for hydrogen evolution reaction［J］. ACS Nano， 2016， 10（1）： 684⁃694.
19	WANG T T， KOU Z K， MU S C， et al. 2D dual⁃metal zeolitic⁃imidazolate⁃framework⁃（ZIF）⁃derived bifunctional air electrodes with ultrahigh electrochemical properties for rechargeable zinc⁃air batteries［J］. Advanced Functional Materials， 2018， 28（5）： 1705048.
20	JIN Q Y， REN B W， CUI H， et al. Nitrogen and cobalt co⁃doped carbon nanotube films as binder⁃free trifunctional electrode for flexible zinc⁃air battery and self⁃powered overall water splitting［J］. Applied Catalysis B： Environmental， 2021， 283： 119643.
21	DONG S， LI T T， ZHANG Z M， et al. Improving electrical contact properties of carbon nanotubes by Co doping using metal⁃organic framework as template［J］. Materials Letters， 2019， 253： 420⁃423.
22	成艳. 过渡金属化合物/碳纳米管杂化三维自支撑电催化剂的原位构筑与多组分协同催化机制研究［D］. 呼和浩特：内蒙古大学， 2021.
23	LI Z N， HAN X J， MA Y， et al. MOFs⁃derived hollow Co/C microspheres with enhanced microwave absorption performance［J］. ACS Sustainable Chemistry& Engineering， 2018， 6（7）： 8904⁃8913.
24	MA N， JIA Y， YANG X F. Seaweed biomass derived （Ni，Co）/CNT nanoaerogels： Efficient bifunctional electrocatalysts for oxygen evolution and reduction reactions［J］. Journal of Materials Chemistry A， 2016， 4（17）： 6376⁃6384.
25	杨铭. 钴基纳米催化剂的制备及其电解水性能的研究［D］. 兰州：兰州大学， 2020.

[1]	Xue Wang, Weiwei Jian, Yi Lu, Shaopeng Zhang, Xiaomeng Zhou, Saizhao Han. Adsorption of VOCs Using MWCNTs Modified with Cu and Sn [J]. Journal of Liaoning Petrochemical University, 2021, 41(5): 44-49.
[2]	Li Zhixue， Yang Zhanxu. Preparation and Properties of Co9S8/C Materials by Coprecipitation Method [J]. Journal of Liaoning Petrochemical University, 2020, 40(2): 1-5.
[3]	Sun Cai， Gao Ying， Zhang Jing. Recent Advancement of Iron Oxide Photoelectrocatalytic Materials [J]. Journal of Liaoning Petrochemical University, 2020, 40(2): 30-37.