介孔氮化铌粉体的制备及电化学性能

doi:10.11896/cldb.19070034

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Abstract Nb₂O₅ precursor powder was prepared by solvothermal method, NbCl₅ as niobium source and P123 as the pore-forming agent, cyanamide as the structural stabilizer. The mesoporous niobium nitride powder was synthesized via nitrogen reduction of the mesoporous Nb₂O₅ powder at 800 ℃ in NH₃.The phase and morphology were characterized by XRD, XPS, SEM, BET and TEM. The results show that the synthesized nio-bium nitride powder is cubic Nb₄N₅ phase, which is similar to spherical particles.It can be seen from the XPS analysis that the powder mainly contains three elements: Nb, N and O, and in the narrow spectrum of Nb elements, the binding energy is 204.6 eV, 207.2 eV and 209.8 eV, and the corresponding bonds are Nb³⁺-N, Nb⁵⁺-N and Nb⁵⁺-O, respectively, indicating that there are two valence states of Nb³⁺ and Nb⁵⁺ in the nitride powders. And the Nb⁵⁺ peak intensity is higher than Nb³⁺, indicating that the niobium is present in the form of Nb⁵⁺. The specific surface area of the powder is 39 m²·g^-1, the pore structure in the range of 3—5 nm of powders has a high proportion, and there are also many pore structures in the range of 8—15 nm. The electrochemical properties were tested by CV, GCD and EIS. The results show that there is no obvious redox peak in CV curve, which is mainly characterized by double layer. The energy storage of niobium nitride powders is mainly controlled by the charge transfer process on the electrode surface. The specific capacitance is 90 F·g^-1 when the current density is 10 mA·g^-1. The internal resistance is 0.82 Ω, and the ion diffusion impedance is 0.22 Ω. When the power density is 480 kW·kg^-1, the energy density is 7.2 Wh·kg^-1.

Key words： Nb₄N₅ powders mesoporous electrochemistry reduction nitridation

Published: 14 July 2020

CLC number:

TQ135.1+2

Fund:This work was financially supported by the National Natural Science Foundation of China (51272066), Natural Science Foundation of Hebei Province(E2019209474)

About author:: Shuai Cui, majoring in the field of new high temperature structural materials, studied for a master's degree in North China University of Science and Technology from September 2017 to March 2020.
Hengyong Weigraduated from Tongji University in September 2010 with a doctorate in material science. Research direction: bionic materials, high temperature insulation materials, supercapacitors, surface isolators and absorbing materials.

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	Articles by authors
	CUI Shuai
	HU Shilei
	LYU Dongfeng
	CUI Yi
	WEI Yingna
	WEI Hengyong
	BU Jinglong
	CHEN Yuejun

Cite this article:

CUI Shuai,HU Shilei,LYU Dongfeng, et al. Preparation and Electrochemical Performance of Mesoporous Niobium Nitride Powders[J]. Materials Reports, 2020, 34(14): 14009-14015.

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http://www.mater-rep.com/EN/10.11896/cldb.19070034 OR http://www.mater-rep.com/EN/Y2020/V34/I14/14009

1 Conway B E. Electrochemical supercapacitors.Plenum Press, USA,1999.
2 Ktz R, Carlen M. Electrochimica Acta, 2000, 45(15),2483.
3 Shang C Q. Core-shell fibers prepare by coaxal electrospinning for high-performance capacitors. Master's Thesis, Qingdao University of Science & Technology, China, 2012(in Chinese).
商超群. 同轴静电纺丝制备芯壳结构高能电容器电极材料及研究.硕士学位论文,青岛科技大学, 2012.
4 Cui H, Zhu G, Liu X, et al. Advanced Science, 2015, 2(12),1500126.
5 Gao B. Applied Surface Science, 2016, 383,57.
6 Dong S, Chen X, Gu L, et al. ACS Applied Materials and Interfaces, 2011, 3(1),93.
7 Wei H. Chemical Journal of Chinese Universities, 2017, 38(3),355.
8 Alfonso J E, Buitrago J, Torres J, et al. Journal of Materials Science, 2010, 45(20),5528.
9 Jouve G, Severac C, Cantacuzene S. Thin Solid Films, 1996, 287(1-2),146.
10 Baunemann A, Bekermann D, Thiede T B, et al. Dalton Transactions, 2008, 28(28), 3715.
11 Kos＇cielska B. Journal of Non-Crystalline Solids, 2008, 354(14),1549.
12 Shang C Q, Yang H M, Zhou X H, et al. Electrochemistry, 2012(18),257(in Chinese).
商超群, 杨海燕, 周新红, 等. 电化学, 2012(18),257.
13 Mi J, Li W C. Chinese Journal of Power Sources, 2014(7),1394(in Chinese).
米娟,李文翠. 电源技术, 2014(7),1394.
14 Liu P, Wei H Y, Bu J L, et al. Materials Reports A:Review Papers, 2017,31(11),146(in Chinese).
刘盼, 魏恒勇, 卜景龙, 等. 材料导报:综述篇, 2017,31(11),146.
15 Jiang L, Gao L. Journal of the American Ceramic Society, 2006, 89(1),156.
16 Zolfaghari A, Ataherian F, Ghaemi M, et al. Electrochimica Acta, 2007, 52(8),2806.
17 Chmiola J, Largeot C, Taberna P, et al. Angewandte Chemie (International Edition), 2008, 47(18),3440.
18 Liu M Y, Yang T, Chen J H, et al. Journal of Alloys & Compounds, 2017, 692,605.
19 Saravanakumar B, Purushothaman K K, Muralidharan G. ACS Applied Materials & Interfaces, 2012, 4(9),4484.
20 Xia X H, Chao D L, Zhang Y Q, et al. Small, 2016, 12(22),3048.
21 Xie Y B, Wang Y, Du H X. Materials Science and Engineering B, 2013, 178(20),1443.
22 Hao S, Binbin W, Dongfang Z, et al. Materials Letters, 2018, 229,17.
23 Lu X, Wang G, Zhai T, et al. Nano Letters, 2012, 12(10),5376.