PATENT CLAIM ANALYSIS

Application Number: 16142001
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-07
Patent Classification: ["427", "535000"]

Abstract:
A method is provided to fabricate a Nafion separating membrane for achieving low impedance and low permeability. Sodium 4-styrenesulfonate (NASS) is grafted to the surface of the membrane through an oxygen plasma induced grafting technique. A modified Nafion-g-NASS membrane is thus fabricated for a vanadium redox flow battery (VRFB) with the permeability of vanadium ions reduced and the conductivity of protons improved. The modified membrane shows higher ion exchange capacity and permeating conductivity along with enhanced voltage efficiency (VE), coulombic efficiency (CE) and energy efficiency (EE). Due to the low permeability of vanadium ions, the VRFB with the modified membrane shows slower self-discharge than that with the pristine Nafion membrane. After 200 cycles of charging and discharging, the VE, CE and EE remain stable. In particular, the modified VRFB shows a higher rate of capacity retention than the pristine VRFB.

Claim (Index 4):
The method according to  claim 1 , wherein, in step (b), said oxygen-plasma treatment uses an oxygen flow with a volume fixed at 20\u02dc30 liters per minute.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 1.97561
- Patent Class: 427.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14454076', '15038814', '13991761', '15531702', '13668604']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8079686822525609
- 35 USC 102 Novelty (BERT): 0.5046658498149619
- Combined Prediction Score: 0.7776383990088009
- Mean Citation Score: 197.662118
- Max Citation Score: 214.14906
- Similarity Product: 137.65149991382003

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test