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author:

Chen, Ming (Chen, Ming.) [1] | Liu, Jun (Liu, Jun.) [2] | Wang, Xiao-Qian (Wang, Xiao-Qian.) [3] | Shao, Leng-Leng (Shao, Leng-Leng.) [4] | Yuan, Zhong-Yong (Yuan, Zhong-Yong.) [5] | Qian, Xing (Qian, Xing.) [6] (Scholars:钱兴) | Wang, Yan-Ning (Wang, Yan-Ning.) [7] | Ding, Ai-Xiang (Ding, Ai-Xiang.) [8] | Tian, Yong-Shang (Tian, Yong-Shang.) [9]

Indexed by:

EI SCIE

Abstract:

Developing an efficient and economic synthetic approach to massively prepare non-precious-metal counter electrode (CE) electrocatalysts with superior catalytic activity and electrochemical stability is highly desirable for the commercialization of dye-sensitized solar cells (DSSCs). Herein, a unique electrocatalytic architecture of Co2P and Ni2P nanoparticles linked and semiexposed at the end points of nitrogen-doped carbon nanotubes (MxP-NCNTs) were first prepared by a metal-catalyzed graphitization-nitridization driven tip-growth process and the followed phosphonation and carbothermal reduction reaction. The prepared MxP-NCNTs were evaluated as CEs in DSSCs and showed high electrocatalytic activity, electrical conductivity, and electrochemical stability for triiodide reduction. The DSSCs assembled with Co2P-NCNTs and Ni2P-NCNTs CEs reached a high power conversion efficiency of 9.76% and 9.21%, respectively, exceeding the efficiency of conventional Pt-based device (7.84%). The extraordinary DSSCs' performance was mainly attributed to the structural advantages of MxP-NCNTs CE, in which the open porous nanotube arrays and integrated heterointerfacial connection in one-dimensional nanostructure of MxP-NCNTs accelerated the electron-ion transport, and the highly dispersed and semiexposed MxP nanocrystals improved the catalytic activity for triiodide reduction. This work provides a avenue to exploring highly effective and robust non-precious-metal CE electrocatalysts for DSSCs.

Keyword:

counter electrode dye-sensitized solar cell electrocatalytic activity nitrogen-doped carbon nanotubes transition metal phosphide

Community:

  • [ 1 ] [Liu, Jun]Xinyang Agr & Forestry Univ, Sch Pharmaceut Engn, Xinyang 464000, Peoples R China
  • [ 2 ] [Chen, Ming]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
  • [ 3 ] [Wang, Xiao-Qian]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
  • [ 4 ] [Wang, Yan-Ning]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
  • [ 5 ] [Ding, Ai-Xiang]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
  • [ 6 ] [Tian, Yong-Shang]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
  • [ 7 ] [Shao, Leng-Leng]Grirem Adv Mat Co Ltd, Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China
  • [ 8 ] [Yuan, Zhong-Yong]Nankai Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
  • [ 9 ] [Qian, Xing]Fuzhou Univ, Coll Chem Engn, Fuzhou 350108, Peoples R China
  • [ 10 ] [Ding, Ai-Xiang]Univ Illinois, Dept Bioengn, Chicago, IL 60607 USA

Reprint 's Address:

  • [Chen, Ming]Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China

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Source :

ACS APPLIED ENERGY MATERIALS

ISSN: 2574-0962

Year: 2021

Issue: 12

Volume: 4

Page: 13952-13962

6 . 9 5 9

JCR@2021

5 . 5 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 16

SCOPUS Cited Count: 15

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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