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Challenges_and_Progresses_of_Solid-State_Li_Metal_Batteries(ATL).pdf

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Challenges_and_Progresses_of_Solid-State_Li_Metal_Batteries(ATL)

CATL Confidential Challenges and Progresses of Solid-State Li Metal Batteries Presented at 2016 CIBF Page 1 2016/5/11 Solid-State Battery –Worldwide Activities 2016/5/11 CATL Confidential Page 2 ? Toyota Sony Panasonic Ohara Hitz-Honda IDEMITSU ? ? ? Prologium台湾辉能 ? ? SolidEnergy Polymer + ionic liquid CATL Sulfidic ceramic electrolyte Polymer electrolyte ? Bosch ? Excellatron 薄膜锂电池 ? Seeo Inc. (Bosch) Polymer electrolyte ? QuantumScape Ceramic electrolyte + gel electrolyte LG Chem Samsung Sulfidic ceramic electrolyte Solid-state-batteries activities are mainly concentrated in Asia and USA Bolloré Hydro-Québec Polymer electrolyte Mass Transport is Crucial for All Solid State Batteries Li metal Solid electrolyte (separator) Cathode (composite) Current collector Active material Solid electrolyte Conductive additive Battery capacity/power + + Ionic conductivity of the electrolyte Ionic conductivity of the electrode Ion transport at the interfaces Polymer Oxide-based Sulfide-based 2016/5/11 CATL Confidential Page 3 Current Status of Polymer-Based Solid Electrolytes Participants: Hydro-Quebec, Bollore, SEEO…东北师大-HQ ? First commercialized solid Li metal battery for EV. ? Highly stable against Li metal. (80%@1300 cycles) 2016/5/11 CATL Confidential Page 4 Li-PEO-LFP systems Polymer-based Li Metal Battery R＆D at CATL 325mAh design ?CATL’s polymer electrolyte shows the capability of long life for Li metal battery. (predicted life: 80%@600cycles) 2016/5/11 CATL Confidential Page 5 Cut Bend Abuse tests Nail All solid without liquid E.L. 2016/5/11 CATL Confidential Page 6 Polymer-based Li Metal Battery R＆D at CATL Limitation of Polymer SEs: 1, Low Ionic Conductivity Low ionic conductivity: ? Heating element, lowering the ED; ? Poor power output, requiring supercapacitor. 2016/5/11 CATL Confidential Page 7 The total energy density of this battery pack is only 100Wh/Kg Highly