A battery-type cathode with RuO2 modified Ni11 (HPO3 )8(OH)6 for asymmetric supercapacitors

被引：5

作者：

Zhao, Kun ^{[1
]}

Wang, Hongtao ^{[1
]}

Shao, Yanqun ^{[1
,2
]}

Yang, Zhiguang ^{[1
]}

Chen, Zhe ^{[1
]}

Chen, Kongfa ^{[1
]}

Chen, Yunxiang ^{[3
]}

Lin, Deyuan ^{[3
]}

机构：

[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China

[2] Fuzhou Univ, Coll Zhicheng, Fuzhou 350002, Fujian, Peoples R China

[3] State Grid Fujian Elect Power Co Ltd, Elect Power Res Inst, Fuzhou 350007, Fujian, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2024年 / 488卷

基金：

中国国家自然科学基金;

关键词：

HydratedRuO2; Ni11(HPO3)8(OH)6; Asymmetric supercapacitors; DFT; HYDROUS RUTHENIUM OXIDES; EVOLUTION;

D O I：

10.1016/j.electacta.2024.144176

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Phosphates are a kind of promising electrode materials because they can provide numerous cavities and several reaction sites to be favored for storing anions and cations. However, the widespread application of phosphates are limited by their intrinsically low electronic conductivity. RuO 2 /hydrated RuO 2 exhibits high conductivity and excellent electrochemical properties. Reducing its dosage and increasing its specific surface area are the research concerns. Combining less RuO 2 to Nickel phosphate (NiP) is expected to improve the electrochemical performance. RuO 2 -modified NiP (NiP-RuO 2 ) electrode material is synthesized by a one-step hydrothermal reaction and its structural morphology and capacitive properties are investigated. The results indicate that NiPRuO 2 electrode consists of hydrated RuO 2 and Ni 11 (HPO 3 ) 8 (OH) 6 , and exhibits excellent battery -type electrochemical supercapacitor performance with a specific capacity of 878.06 C/g at 1 A/g. According to density functional theory (DFT) analysis, Ru-doped Ni 11 (HPO 3 ) 8 (OH) 6 has a narrower forbidden band width and higher conductivity than Ni 11 (HPO 3 ) 8 (OH) 6 . Furthermore, the asymmetric supercapacitor (ASC) assembled by NiPRuO 2 /NF and activated carbon (AC) electrode achieves a high energy density (43.58 Wh/kg) at a power density of 923.47 W/kg. When two ASC devices are connected in series, ten light -emitting diodes (LEDs) can be illuminated for ten minutes.

引用

页数：10

共 41 条

[1] Ruthenium oxide-carbon-based nanofiller-reinforced conducting polymer nanocomposites and their supercapacitor applications [J].

Ates, Murat ;

Fernandez, Carlos .

POLYMER BULLETIN, 2019, 76 (05) :2601-2619

[2]

Brezesinski T, 2010, NAT MATER, V9, P146, DOI [10.1038/nmat2612, 10.1038/NMAT2612]

[3] Toward the Theoretical Capacitance of RuO2 Reinforced by Highly Conductive Nanoporous Gold [J].

Chen, L. Y. ;

Hou, Y. ;

Kang, J. L. ;

Hirata, A. ;

Fujita, T. ;

Chen, M. W. .

ADVANCED ENERGY MATERIALS, 2013, 3 (07) :851-856

[4] In Situ Synthesis of MOF-74 Family for High Areal Energy Density of Aqueous Nickel-Zinc Batteries [J].

Chen, Tingting ;

Wang, Fanfan ;

Cao, Shuai ;

Bai, Yang ;

Zheng, Shasha ;

Li, Wenting ;

Zhang, Songtao ;

Hu, Shu-Xian ;

Pang, Huan .

ADVANCED MATERIALS, 2022, 34 (30)

[5] True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors [J].

Chodankar, Nilesh R. ;

Pham, Hong Duc ;

Nanjundan, Ashok Kumar ;

Fernando, Joseph F. S. ;

Jayaramulu, Kolleboyina ;

Golberg, Dmitri ;

Han, Young-Kyu ;

Dubal, Deepak P. .

SMALL, 2020, 16 (37)

[6] DFT plus U calculations of the ground state and metastable states of uranium dioxide [J].

Dorado, Boris ;

Amadon, Bernard ;

Freyss, Michel ;

Bertolus, Marjorie .

PHYSICAL REVIEW B, 2009, 79 (23)

[7]

DUVIGNEAUD PH, 1981, THERMOCHIM ACTA, V51, P307, DOI 10.1016/0040-6031(81)85168-4

[8] Electrochemical performance of MoO3-RuO2/Ti in H2SO4 electrolyte as anodes for asymmetric supercapacitors [J].

Ge, Pengbo ;

Tan, Hao ;

Shao, Yanqun ;

Zhang, Rongrong ;

Xu, Lihong ;

Zhuang, Jianhuang ;

Chen, Yunxiang ;

Xia, Xiaojian ;

Liu, Zhijiang ;

Li, Huihui ;

Chen, Kongfa .

ELECTROCHIMICA ACTA, 2022, 429

[9] Embedding Atomically Dispersed Iron Sites in Nitrogen-Doped Carbon Frameworks-Wrapped Silicon Suboxide for Superior Lithium Storage [J].

Guo, Xiaotian ;

Xu, Hengyue ;

Li, Wenting ;

Liu, Yangyi ;

Shi, Yuxin ;

Li, Qing ;

Pang, Huan .

ADVANCED SCIENCE, 2023, 10 (04)

[10] Ni-Mo-S@Ni-P composite materials as binder-free electrodes for aqueous asymmetric supercapacitors with enhanced performance [J].

Lei, Xueyan ;

Ge, Shicheng ;

Yang, Tzu-Yi ;

Lu, Yalin ;

Chueh, Yu-Lun ;

Xiang, Bin .

JOURNAL OF POWER SOURCES, 2020, 477

← 1 2 3 4 5 →