Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells

doi:10.1039/c9se00834a

GIEC OpenIR

	Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells
	Zhang, Yuyuan 1,2; Deng, Lifang 2; Hu, Huawen 1; Qiao, Yu 3; Yuan, Haoran2 ; Chen, Dongchu 1; Chang, Menglei 1; Wei, Hongyang 1
	2020-04-01
发表期刊	SUSTAINABLE ENERGY & FUELS
ISSN	2398-4902
卷号	4 期号:4 页码:1642-1653
通讯作者	Deng, Lifang(denglf@ms.giec.ac.cn) ; Hu, Huawen(huawenhu@126.com)
摘要	Microbial fuel cells (MFCs) are widely explored for promising green and renewable energy generation; however, their strong reliance on noble metal-based catalysts causes high fabrication costs and thus limits their widespread applications. Herein, metal-free alternatives derived from naturally abundant, renewable pomelo peels are explored. Two kinds of pomelo peel-derived novel N-doped carbocatalysts are presented, i.e., biochar microspheres (BCMs) and their activated porous counterpart (a-BCMs). In comparison with BCMs, the thermal activation processing endowed a-BCMs with significantly enhanced porosity, an elevated N doping content (2.41 vs. 0.51 at%), a 5-fold increased specific surface area (314.3 vs. 62.8 m(2) g(-1)), and a much improved electrical conductivity (0.13 vs. 0.006 S cm(-1)). This metal-free a-BCM catalyst is subsequently employed to construct an MFC cathode for the oxygen reduction reaction (ORR), and an impressive electrocatalytic activity is achieved in 0.1 mol L-1 phosphate-buffered saline (PBS) buffer. The maximum power density reaches as high as 907.2 mW m(-2), comparable to that of the costly Pt/C counterpart (1022.9 mW m(-2)). The long-term durability of the a-BCM electrocatalyst is also demonstrated by continuous running for 90 days, even superior to that of Pt/C. The origin of this excellent electrocatalytic performance of a-BCMs is deeply analyzed and discussed. Furthermore, the 4e(-) reduction pathway is also unraveled for the efficient and durable carbocatalysis of the ORR over a-BCMs in MFCs.
DOI	10.1039/c9se00834a
关键词[WOS]	OXYGEN REDUCTION REACTION ; LONG-TERM PERFORMANCE ; AIR-CATHODE ; ACTIVATED CARBON ; POROUS CARBON ; FREE ELECTROCATALYSTS ; ANODE MODIFICATION ; NITROGEN ; GRAPHENE ; NANOPARTICLES
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51702050] ; National Natural Science Foundation of China[51906045] ; Foundation of CAS Key Laboratory of Renewable Energy[Y807k61001] ; Foundation of State Key Laboratory of Coal Combustion[FSKLCCA1808] ; Open Research Foundation of Jiangsu Provincial Key Laboratory of Biomass Energy and Materials[JSBEM201608] ; Key Project of Department of Education of Guangdong Province[2016GCZX008] ; Featured Innovation Project of the Department of Education of Guangdong Province[2017KTSCX188]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
项目资助者	National Natural Science Foundation of China ; Foundation of CAS Key Laboratory of Renewable Energy ; Foundation of State Key Laboratory of Coal Combustion ; Open Research Foundation of Jiangsu Provincial Key Laboratory of Biomass Energy and Materials ; Key Project of Department of Education of Guangdong Province ; Featured Innovation Project of the Department of Education of Guangdong Province
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000526855200054
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/26981
专题	中国科学院广州能源研究所
通讯作者	Deng, Lifang; Hu, Huawen
作者单位	1.Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China 2.Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yuyuan,Deng, Lifang,Hu, Huawen,et al. Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells[J]. SUSTAINABLE ENERGY & FUELS,2020,4(4):1642-1653.
APA	Zhang, Yuyuan.,Deng, Lifang.,Hu, Huawen.,Qiao, Yu.,Yuan, Haoran.,...&Wei, Hongyang.(2020).Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells.SUSTAINABLE ENERGY & FUELS,4(4),1642-1653.
MLA	Zhang, Yuyuan,et al."Pomelo peel-derived, N-doped biochar microspheres as an efficient and durable metal-free ORR catalyst in microbial fuel cells".SUSTAINABLE ENERGY & FUELS 4.4(2020):1642-1653.