TY - GEN
T1 - Development of innovative lithium metal-free lithium-ion sulfur battery for renewable energy, electric transport and electronics
AU - Hara, Toru
AU - Konarov, Aishuak
AU - Kurmanbayeba, Indira
AU - Bakenov, Zhumabay
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - Lithium/sulfur (Li/S) battery is a promising candidate for the next generation rechargeable battery since the negative electrode, lithium, and the cathode, sulfur, have the highest theoretical capacities of 3862 and of 1672 mAh/g, respectively, among any other active materials, e.g., graphite (372 mAh/g) or LiCoO2 (274 mAh/g, only about 50% is practically available). However, there are several challenging issues in order to realize the use of this type of next generation battery. First, the lithium metal anode has an intrinsic safety issue, dendrite growth that can result in internal short circuit failure. Second, the sulfur cathode is a very insulating material; therefore, sulfur-based cathodes need a large amount of conducting additives, resulting in the decrease in the practically available gravimetric capacity per the unit mass of cathode composite. Third, lithium polysulfides, reduced (discharged) forms of sulfur, dissolve into an electrolyte solution, resulting in capacity fading. For realistic battery applications, these issues from both the anode and the cathode need to be solved or mitigated. To this end, we integrate three practically possible solutions: (1) manufacture-friendly pre-lithiation of anode or cathode materials, (2) practically optimal choice of conducting agent and of the method for S/conductive-agent integration, and (3) stabilization of discharged forms of the cathode.
AB - Lithium/sulfur (Li/S) battery is a promising candidate for the next generation rechargeable battery since the negative electrode, lithium, and the cathode, sulfur, have the highest theoretical capacities of 3862 and of 1672 mAh/g, respectively, among any other active materials, e.g., graphite (372 mAh/g) or LiCoO2 (274 mAh/g, only about 50% is practically available). However, there are several challenging issues in order to realize the use of this type of next generation battery. First, the lithium metal anode has an intrinsic safety issue, dendrite growth that can result in internal short circuit failure. Second, the sulfur cathode is a very insulating material; therefore, sulfur-based cathodes need a large amount of conducting additives, resulting in the decrease in the practically available gravimetric capacity per the unit mass of cathode composite. Third, lithium polysulfides, reduced (discharged) forms of sulfur, dissolve into an electrolyte solution, resulting in capacity fading. For realistic battery applications, these issues from both the anode and the cathode need to be solved or mitigated. To this end, we integrate three practically possible solutions: (1) manufacture-friendly pre-lithiation of anode or cathode materials, (2) practically optimal choice of conducting agent and of the method for S/conductive-agent integration, and (3) stabilization of discharged forms of the cathode.
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M3 - Conference contribution
AN - SCOPUS:84962531090
T3 - Large Lithium Ion Battery Technology and Application Symposium, LLIBTA 2015 and Large EC Capacitor Technology and Application Symposium, ECCAP 2015 - Held at AABC Europe 2015
SP - 696
EP - 702
BT - Large Lithium Ion Battery Technology and Application Symposium, LLIBTA 2015 and Large EC Capacitor Technology and Application Symposium, ECCAP 2015 - Held at AABC Europe 2015
PB - Cambridge EnerTech, Cambridge Innovation Institute
T2 - Large Lithium Ion Battery Technology and Application Symposium, LLIBTA 2015 and Large EC Capacitor Technology and Application Symposium, ECCAP 2015
Y2 - 26 January 2015 through 27 January 2015
ER -