Abstract

Use of a silicate inorganic binder was investigated with the goal of suppressing volume expansion of Si negative electrodes associated with charge-discharge.Use of a Si negative electrode with the electrode density lowered by conductive carbon and with inorganic binder permeated to the electrode interior enabled control of the amount of electrode expansion associated with charge-discharge and suppression of delamination from the current collector and conductive path breakdown within the active material layer. This realized a high-performance Si negative electrode with a large reversible charge-discharge capacity.XPS analysis and STEM-EDX analysis were performed to elucidate these factors. The results showed that in electrodes coated with an inorganic binder, a network of siloxane bonds formed and strong bonds were obtained, and an interface phase in which the Si and inorganic binder are fused also formed.

References

1. (1) NEDO: Jisedai jidosha no bunya niokeru sumato komyunitei infura to hyojunka no arikata ni kakaru kento, (2016) (in Japanese)
2. (2) NEDO: EV PHV rodo mappu kentokai hokokusho, (2016) (in Japanese)
3. (3) Mukai, T., Yamashita, N., Ikeuchi, Y., Sakamoto, T., Sirikon kei fukyoku no juhoden tokusei no kojo to bocho taisaku – Keisan kei mukibainda o mochiita Si fukyoku no denkyoku tokusei, Material stage, Vol. 17, No. 5, p. 29-33, (2017) (in Japanese)
4. (4) Liu, W.-R., Guo, Z.-Z., Young, W.-S., Shieh, D.-T., Wu, H.-C., Yang, M.-H., Wu, N.-L.: Effect of electrode structure on performance of Si anode in Li-ion batteries: Si particle size and conductive additive, Journal of Power Sources, Vol. 140, Issue 1, p. 139-144, (2005)
5. (5) Qiao, H.-B., Tian, X.-M., Yi, T.-F.: Electrochemical Properties of Si Negative Electrodes Bonded with Partially Hydrolyzed Polyacrylamide for Li-ion Batteries, International Journal of Electrochemical Science, Vol. 8, Issue 7, p. 9414–9420, (2013)
6. (6) Li, J.-T., Wu, Z.-Y., Lu, Y.-Q., Zhou, Y., Huang, Q.-S., Huang, L., Sun, S.-G.: Water Soluble Binder, an Electrochemical Performance Booster for Electrode Materials with High Energy Density, Advanced Energy Materials, Vol. 7, Issue 24, 1701185, (2017)
7. (7) Mukai, T., Ikeuchi, Y., Sakamoto, T., Yamashita, N., Kinoshita, T., Takahashi, M., Tanaami, K., Aoyagi, S.: Dai II hen Dai 2 sho Sirikon fukyokuyo mukikeisankei bainda, Recent Developments of Silicon Anodes for Lithium Ion Batteries, CMC Publishing Co., Ltd., p. 164-170, (2019) (in Japanese)
8. (8) Mukai, T., Ikeuchi, Y., Sakamoto, T., Yamashita, N.: Dai 3 sho Fukyoku zairyo no kaihatsu, Posuto richiumu ni muketa kakushinteki niji denchi no zairyo kaihatsu, NTS Inc., p. 145, (2018) (in Japanese)
9. (9) Mukai, T., Yanagida, M., Sakamoto, T.: Dai 4 sho Dai 2 setsu Richiumu ion niji denchi no tokusei kojo ni muketa funtai gijutsu, Richiumu ion niji denchi – koyoryoka tokusei kaizen ni muketa buzai sekkei apurochi to hyoka shuho -, Johokiko Co., Ltd., p. 210-219, (2017) (in Japanese)
10. (10) Iwanari, D., Yoshida, K., Tanaka, K., Ikeuchi, Y., Sakamoto, T., Yamashita, N., Mukai, T.: Dai 7 sho Dai 4 setsu Sirikon funmatsu no seizohoho to keisankei mukibainda o mochiita DG-Si fukyoku no denkyoku tokusei, Jisedai denchi yo denkyoku zairyo no koenerugi mitsudo koshutsuryokuka, TECHNICAL INFORMATION INSTITUTE CO., LTD., p. 145, (2017) (in Japanese)
11. (11) Fuchs, J. N.: Ueber ein neues Product aus Kieselerde und Kali; und dessen nüzliche Anwendung als Schuzmittel gegen schnelle Verbreitung des Feuers in Theatern, als Bindemittel, zu firnißartigen Anstrichen u.s.w., Polytechnischen Journals, 17, CIV, p. 465-481, (1825)
12. (12) Arkles, B., Steinmetz, J. R., Zazyczny, J., Mehta, P.: Factors contributing to the stability of alkoxysilanes in aqueous solution, Silanes and Other Coupling Agents, p. 91-104, (1992)
13. (13) Fukushima, T.: Mechanisms of Hardening and Deterioration of Films of Water Glass Inorganic Binders, Materials Life, Vol. 6, No. 3, p. 146-157, (1994) (in Japanese)
14. (14) Sotoaka, R.: New Etchants for High Speed Anisotropic Etching of Silicon, Journal of the Surface Finishing Society of Japan, Vol. 59, No. 2, p. 104-106, (2008) (in Japanese)
15. (15) Morinaga, H.: Cleaning technology for new materials, Oyo Buturi, Vol. 70, No. 9, p. 1067-1073, (2001) (in Japanese)
16. (16) Nagai, T.: Dai 3 sho Dai 7 setsu Koenerugi mitsudoka ni muketa dodenzai no bunsansei kojo gijutsu, Richiumu ion niji denchi – koyoryoka tokusei kaizen ni muketa buzai sekkei apurochi to hyoka shuho -, Johokiko Co., Ltd., p. 166-181, (2017) (in Japanese)

Author (organization or company)

• Makiko TAKAHASHI（Innovative Research Excellence）
• Tomohiro KINOSHITA（Innovative Research Excellence）
• Kiyoshi TANAAMI（Innovative Research Excellence）
• Shintaro AOYAGI（Innovative Research Excellence Power Unit & Energy）
• Takashi MUKAI（ATTACCATO Limited Liability Company）
• Yuta IKEUCHI（ATTACCATO Limited Liability Company）
• Taichi SAKAMOTO（ATTACCATO Limited Liability Company）
• Naoto YAMASHITA（ATTACCATO Limited Liability Company）

Publication Information

Article of Honda R&D Technical Review Vol.33 No.1 (82 - 89)

PDF

Citation Information