{'fraction_non_alphanumeric': 0.03369434416365824, 'fraction_numerical': 0.036101083032490974, 'mean_word_length': 4.473684210526316, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Preparation and performance of Li_4Ti_5O_(12)/AC asymmetric capacitor

After using commercial activated carbon and lithium titanium oxide( Li4Ti5O12) as positive and negative materials respectively,an asymmetric capacitor had been prepared by step formation processes. The raw materials and asymmetric capacitors were examined by SEM,galvanostatic charge / discharge and cyclic voltammetry. The results indicated that the lithium titanate composites with 25% graphene embraced uniform particle distribution and showed the largest capacity and lowest IR-Drop. When the capacitor with the thickness of positive was 240 μm and the thickness of negative was 65 μm charged-discharged in 1. 5 ~ 2. 7 V,the specific energy at the current of 0. 1 A / g was 43. 84 Wh / kg,the specific power at the current of 5. 0 A / g was 3. 27 k W / kg.