Recently, a Korean paper was reviewed, and the authors processed their Hanji paper (also known as Korean paper) for use as a battery separator material.
Not to mention that the use of paper as a battery separator has been published as early as 2012, and the performance of the battery made of the battery separator made of hangi used in this manuscript is not good, not only inferior to the current mainstream battery, but also much worse than the battery separator made of other paper materials in the past few years.
In addition, in the preface, the Korean trumpets how awesome their hanji is.
In the first round of reviewers, I objectively proposed to him what are the advantages of using hanji to make a diaphragm compared with other types of paper materials, and suggested that he choose several other papers for experiments and comparisons.
As a result, the author not only did not conduct experiments, but also did not give reasonable explanations, but only a perfunctory force, simply saying that hanji is good and suitable for diaphragms.
So I taught him a lesson in the second round of reviewers.
The comments given to him are as follows:
"The author's explanation of why no other paper was used for experimental studies is very unconvincing. Taking Chinese rice paper as an example, the Han Dynasty Chinese introduced papermaking to the Korean Peninsula, and during the Tang Dynasty (after 618 AD), Korean paper appeared on the Korean Peninsula. And rice paper began before the Sui and Tang dynasties (before 581 AD). And rice paper has the reputation of "the king of paper". The main raw material of rice paper is sandalwood bark and sand field straw, whereas the raw material of hanji is mulberry bark. The production methods of rice paper include selecting, crushing, steaming, soaking, fermenting, beating, adding tree paste and blending into pulp, and placing the copied paper in the sun to dry after hand-scooping the paper. Hanji is made by peeling, steaming, soaking, washing, drying, beating, dehydrating, drying, and trimming. Therefore, the preparation process of rice paper is more complex, and it is born with porous structure, good moisture absorption and liquid absorption ability. As a result, rice paper has been used as early as 2012 to study the separator material for processing and making batteries, (Journal of Power Sources 2012, 204: 149-154), and its performance is better than that of commercial battery separators. ”
The original comments of the reviewers are as follows:
The author's explanation of why no other paper was used for experimental research is not convincing. Taking Chinese rice paper (also known as Xuan paper) as an example, during the Han Dynasty, Chinese people introduced papermaking techniques to the Korean Peninsula. During the Tang Dynasty (after 618 AD), Korean paper appeared on the Korean Peninsula. Xuan paper originated before the Sui and Tang dynasties (before 581 AD). And Xuan paper is known as the king of paper. The main raw materials for rice paper are green sandalwood bark and Shatian rice straw, while the raw material for Korean paper is mulberry bark. The production method of rice paper includes selection, crushing, steaming, soaking, fermentation, beating, blending into pulp after adding the tree pulp, and then placing the prepared paper in the sun to dry after manually picking up the paper. The production methods of Korean paper include peeling, steaming, soaking, washing, drying, tapping, dehydration, drying, and trimming. Therefore, the preparation process of rice paper is more complex, naturally possessing a porous structure, good moisture absorption and liquid absorption ability. This has led to the use of Xuan paper as a separator material for researching and processing batteries as early as 2012 (Journal of Power Sources 2012, 204:149-154), and its performance is superior to commercial battery separators. In 2018, carbon felt interlayer derived from rice paper was used for Li-S batteries, which enabled the batteries with a high capacity of 837 mA h g−1 at 2.0 C and a high initial capacity of 1073.4 mA h g−1 and good capacity retention of 824.5 mA h g−1 after 500 cycles at 0.5 C. CFSS interlayer also shows excellent anti-self-discharge performance. Rice paper-derived porous carbon as the interlayer material for advanced lithium–sulfur batteries, which has a specific surface 300.4 m2 g−1. It can productively curb polysulfide shuttle and boost the cycling performance and rate capability of the battery. The first capacity of Li–S battery with this porous carbon was 905.6 mAh g−1 at 1 C, and it maintained 464.8 mAh g−1 even over 500 cycles (Ionics 2022, 28, 3207–3215).
Therefore, compared to the reported paper driven interlayer material, Hanji derived interlayer material did not show any better advantages. Therefore, the innovation of this paper is very low. And the author did not conduct a comparative study on any other type of paper, so the research results are very unconvincing.