Effect of carbon coating on the electrochemical performance of LiFePO4/C as cathode materials for aqueous electrolyte lithium-ion battery

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• 作者：Lukman Noerochim ; Ade Okta Yurwendra ; Diah Susanti
• 关键词：Aqueous electrolyte ; Lithium ; ion batteries ; Lithium iron phosphate ; Carbon ; Conductive coating
• 刊名：Ionics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：22
• 期：3
• 页码：341-346
• 全文大小：3,344 KB
• 参考文献：1.Wakira M (2001) J Mater Sci Eng R 33:109–134CrossRef
  2.Mi CH, Zhang CG, Li HLJ (2007) Electroanal Chem 602:245–254CrossRef
  3.Meijie Z, Dahn JR (1996) J Electrochem Soc 143:9
  4.Wu L, Dahn JR, Wainwright DS (1994) Science 264:1115–1117CrossRef
  5.Wang GJ et al (2007) Angew Chem Int 46:295–297CrossRef
  6.Tang W et al (2011) Electrochem Commun 13:205–208CrossRef
  7.Qu QT et al (2011) Energy Environ Sci 4:3985–3990CrossRef
  8.Tang W et al (2010) Electrochem Commun 12:1524–1526CrossRef
  9.Manickam M, Singh P, Thurgate S, Prince K (2006) J Power Sources 158:646–649CrossRef
  10.Padhi AK, Nanjundaswamy KS, Goodenough JB (1997) J Electrochem Soc 144:4
  11.Wu B, Ren Y, Li N (2011) “LiFePO4 cathode material”. Electric vehicles the benefits and barriers. ISBN: 978-953-307-287-6
  12.Noerochim L, Wang J-Z, Chou S-L, Li H-J, Liu H-K (2010) Electrochim Acta 56(1):314–320CrossRef
  13.Liu Q, Liu Z, Xiao G, Liao S (2013) Ionics 19:445–450CrossRef
  14.Zeng X, Liu Q, Chen M, Leng L, Shu T, Du L, Song H, Liao S (2015) Electrochim Acta in press
  
• 作者单位：Lukman Noerochim (1)
  Ade Okta Yurwendra (1)
  Diah Susanti (1)
  
  1. Department of Materials and Metallurgical Engineering, Sepuluh Nopember Institute of Technology, Surabaya, 60111, Indonesia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760

文摘

Organic electrolyte is widely used for lithium-ion rechargeable batteries but might cause flammable fumes or fire due to improper use such as overcharge or short circuit. That weakness encourages the development of tools and materials which are cheap and environmental friendly for rechargeable lithium-ion batteries with aqueous electrolyte. Lithium iron phosphate (LiFePO₄) with olivine structure is a potential candidate to be used as the cathode in aqueous electrolyte lithium-ion battery. However, LiFePO₄ has a low electronic conductivity compared to other cathodes. Conductive coating of LiFePO₄ was applied to improve the conductivity using sucrose as carbon source by heating to 600 °C for 3 h on an Argon atmosphere. The carbon-coated LiFePO₄ (LiFePO₄/C) was successfully prepared with three variations of the weight percentage of carbon. From the cyclic voltammetry, the addition of carbon coatings could improve the stability of cell battery in aqueous electrolyte. The result of galvanostatic charge/discharge shows that 9 % carbon exhibits the best result with the first specific discharge capacity of 13.3 mAh g−1 and capacity fading by 2.2 % after 100 cycles. Although carbon coating enhances the conductivity of LiFePO₄, excessive addition of carbon could degrade the capacity of LiFePO₄.