Wenhan Niu1, Ligui Li1*, and Shaowei Chen1,2*
 Lin L, Zhu Q, Xu A W Noble-metal-free Fe-N/C catalyst for highly efficient oxygen reduction reaction under both alkaline and acidic conditions[J]. Journal of the American Chemical Society, 2014, 136 (31): 11027-11033.
 Yin H, Zhang C Z, Liu F, et al. Hybrid of Iron Nitride and Nitrogen-Doped Graphene Aerogel as Synergistic Catalyst for Oxygen Reduction Reaction[J]. Advanced Functional Materials, 2014, 24 (20) : 2930-2937.
 Liu R, Wu D, Feng X L, et al. Nitrogen-doped ordered mesoporous graphitic arrays with high electrocatalytic activity for oxygen reduction[J]. Angewandte Chemie-International Edition, 2010, 49 (14) : 2565-2569.
 Yu H, Shang L, Bian T, et al. Nitrogen-Doped Porous Carbon Nanosheets Templated from g-C3 N4 as Metal-Free Electrocatalysts for Efficient Oxygen Reduction Reaction[J]. Advanced Materials, 2016, 28 (25) : 5080-5086.
 Higgins D, Zamani P, Yu A P, et al. The application of graphene and its composites in oxygen reduction electrocatalysis: a perspective and review of recent progress[J]. Energy & Environmental Science, 2016, 9 (2) : 357-390.
 Niu W H, Li L G, Liu X J, et al. Mesoporous N-doped carbons prepared with thermally removable nanoparticle templates: an efficient electrocatalyst for oxygen reduction reaction[J]. Journal of the American Chemical Society, 2015, 137 (16) : 5555-5562.
 Zhu Q L, Xia W, Akita T, et al. Metal-Organic Framework-Derived Honeycomb-Like Open Porous Nanostructures as Precious-Metal-Free Catalysts for Highly Efficient Oxygen Electroreduction[J]. Advanced Materials, 2016, 28 (30) : 6391-6398.
 Zhong H X, Wang J, Zhang Y W, et al. ZIF-8 derived graphene-based nitrogen-doped porous carbon sheets as highly efficient and durable oxygen reduction electrocatalysts[J]. Angewandte Chemie-International Edition, 2014, 53 (51) : 14235-14239.
 Zhang L J, Wang X Y, Wang R H, et al. Structural Evolution from Metal–Organic Framework to Hybrids of Nitrogen-Doped Porous Carbon and Carbon Nanotubes for Enhanced Oxygen Reduction Activity[J]. Chemistry of Materials, 2015, 27 (22) : 7610-7618.
 Zhou M, Wang H L, Guo S Towards high-efficiency nanoelectrocatalysts for oxygen reduction through engineering advanced carbon nanomaterials[J]. Chemical Society Reviews, 2016, 45 (5) : 1273-1307.
 Yang H B, Miao J W, Hung S F, et al. Identification of Catalytic Sites for Oxygen Reduction and Oxygen Evolution in N-Doped Graphene Materials: Development of Highly Efficient Metal-Free Bifunctional Electrocatalyst[J]. Science Advances, 2016, 2, e1501122.
 Wood K N, Ryan O H, Pylypenko S Recent progress on nitrogen carbon structures designed for use in energy and sustainability applications[J]. Energy & Environmental Science, 2014, 7 (4) : 1212-1249.
 Z L, M S, L Z, et al. Directed Growth of Metal-Organic Frameworks and Their Derived Carbon-Based Network for Efficient Electrocatalytic Oxygen Reduction[J]. Advanced Materials, 2016, 28 (12) : 2337-2344.
 Mane G P, Talapaneni S N, Anand C, et al. Preparation of Highly Ordered Nitrogen-Containing Mesoporous Carbon from a Gelatin Biomolecule and its Excellent Sensing of Acetic Acid[J]. Advanced Functional Materials, 2012, 22 (17) : 3596-3604.
 Wei W, Liang H W, Parvez K, et al. Nitrogen-Doped Carbon Nanosheets with Size-Defined Mesopores as Highly Efficient Metal-Free Catalyst for the Oxygen Reduction Reaction[J]. Angewandte Chemie-International Edition, 2014, 53 (6) : 1570-1574.
 Liang H W, Wei W, Wu Z S, et al. Mesoporous metal-nitrogen-doped carbon electrocatalysts for highly efficient oxygen reduction reaction[J]. Journal of the American Chemistry Society, 2013, 135 (43) : 16002-16005.
 Silva R, Voiry D, Chhowalla M, et al. Efficient metal-free electrocatalysts for oxygen reduction: polyaniline-derived N- and O-doped mesoporous carbons[J]. Journal of the American Chemical Society, 2013, 135 (21) : 7823-7826.
 Han J P, Xu G Y, Ding B, et al. Porous nitrogen-doped hollow carbon spheres derived from polyaniline for high performance supercapacitors[J]. Journal of Materials Chemistry A, 2014, 2 (15) : 5352-5357.
 Liu X J, Zou S Z, Chen S W Ordered mesoporous carbons codoped with nitrogen and iron as effective catalysts for oxygen reduction reaction[J]. Nanoscale, 2016, 8(46): 19249-19255.
 Liang H W, X D Zhuang, Bruller S, et al. Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction[J]. Nature Communications, 2014, 5, 4973.
 Chen S, Bi J, Zhao Y, et al. Nitrogen-Doped Carbon Nanocages as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction[J]. Advanced Materials, 2012, 24(41): 5593-5597.
 Sun T, Wu Q, Zhuo O, et al. Manganese oxide-induced strategy to high-performance iron/nitrogen/carbon electrocatalysts with highly exposed active sites[J]. Nanoscale, 2016, 8(16): 8480-8485.
 Liang C, Hong K, Guiochon G A, et al. Synthesis of a large-scale highly ordered porous carbon film by self-assembly of block copolymers[J]. Angewandte Chemie-International Edition, 2004, 43 (43) : 5785-5789.
 Tang J, Liu J, Li C, et al. Synthesis of nitrogen-doped mesoporous carbon spheres with extra-large pores through assembly of diblock copolymer micelles[J]. Angewandte Chemie-International Edition, 2015, 54 (2) : 588-593.
 Hu P, Liu K, Deming C P, et al. Multifunctional graphene‐based nanostructures for efficient electrocatalytic reduction of oxygen[J]. Journal of Chemical Technology and Biotechnology, 2015, 90 (12) : 2132-2151.
 Dutta S, Bhaumik A, Wu K C W Hierarchically porous carbon derived from polymers and biomass: effect of interconnected pores on energy applications[J]. Energy & Environmental Science, 2014, 7 (11) : 3574-3592.
 Roberts A D, Li X, Zhang H Porous carbon spheres and monoliths: morphology control, pore size tuning and their applications as Li-ion battery anode materials[J]. Chemical Society Reviews, 2014, 43 (13) : 4341-4356.
 Xiao M, Zhu J, Feng L, et al. Meso/macroporous nitrogen-doped carbon architectures with iron carbide encapsulated in graphitic layers as an efficient and robust catalyst for the oxygen reduction reaction in both acidic and alkaline solutions[J]. Advanced Materials, 2015, 27 (15) : 2521-2527.
 Liu Y L, Shi C X, Xu X Y, et al. Nitrogen-doped hierarchically porous carbon spheres as efficient metal-free electrocatalysts for an oxygen reduction reaction[J]. Journal of Power Sources, 2015, 283, 389-396.
 Liu W J, Tian K, He Y R, et al. High-yield harvest of nanofibers/mesoporous carbon composite by pyrolysis of waste biomass and its application for high durability electrochemical energy storage[J]. Environmental Science & Technology, 2014, 48 (23) : 13951-9.
 Wang S G, Cui Z T, Qin J W, et al. Thermally removable in-situ formed ZnO template for synthesis of hierarchically porous N-doped carbon nanofibers for enhanced electrocatalysis[J]. Nano Research, 2016, 9 (8) : 2270-2283.
 Niu W H, Li L G, Liu J, et al. Graphene-Supported Mesoporous Carbons Prepared with Thermally Removable Templates as Efficient Catalysts for Oxygen Electroreduction[J]. Small, 2016, 12 (14) : 1900-1908.
 Naveen M H, Shim K, Hossain M S A, et al. Template Free Preparation of Heteroatoms Doped Carbon Spheres with Trace Fe for Efficient Oxygen Reduction Reaction and Supercapacitor[J]. Advanced Energy Materials, 2017, .
 Chabot V, Higgins D, Yu A, et al. A review of graphene and graphene oxide sponge: material synthesis and applications to energy and the environment[J]. Energy & Environmental Science, 2014, 7 (5) : 1564-1596.
 Yang S, Feng X L, Wang X, et al. Graphene-based carbon nitride nanosheets as efficient metal-free electrocatalysts for oxygen reduction reactions[J]. Angewandte Chemie-International Edition, 2011, 50 (23) : 5339-5343.
 Zhou X J, J l Qiao, Yang L, et al. A Review of Graphene-Based Nanostructural Materials for Both Catalyst Supports and Metal-Free Catalysts in PEM Fuel Cell Oxygen Reduction Reactions[J]. Advanced Energy Materials, 2014, 4 (8) : 1301523.
 Niu W H, Li L G, Wang N, et al. Volatilizable template-assisted scalable preparation of honeycomb-like porous carbons for efficient oxygen electroreduction[J]. Journal of Materials Chemistry A, 2016, 4 (28) : 10820-10827.
 Su Y Z, Yao Z Q, Zhang F, et al. Sulfur-Enriched Conjugated Polymer Nanosheet Derived Sulfur and Nitrogen co-Doped Porous Carbon Nanosheets as Electrocatalysts for Oxygen Reduction Reaction and Zinc-Air Battery[J]. Advanced Functional Materials, 2016, 26 (32) : 5893-5902.
|||MA Wu-wei, CHANG Qi-gang, SHI Xiong-fang, TONG Yan-bin, ZHOU Li, YE Bang-ce, LU Jian-jiang, ZHAO Jin-hu. Novel Electrochemical Sensor Based on Integration of Nanoporous Gold with Molecularly Imprinted Polymer for Detection of Arsenic Ion(III) [J]. Journal of Electrochemistry, 2020, 26(6): 900-910.|
|||XING Yi-fei, LI Na, WEN Xiao-fang, HAN Hong-yan, CUI Min, ZHANG Cong, REN Ju-jie, JI Xue-ping. Electrochemical Determination of Dopamine Based on Metal-Substituted Polyoxometalates Composites [J]. Journal of Electrochemistry, 2020, 26(6): 890-899.|
|||JIN Tong-zheng, YANG Yu-meng, FAN Sheng-hui, WEI Guo-ying, ZHANG Zhao. Synergistic Effect of Dissolving O2 and Wavelength on the Photo-Assisted Anodic Deposition of CeO2 Thin Films [J]. Journal of Electrochemistry, 2020, 26(6): 868-875.|
|||WANG Yi-jie, NIU Dong-fang, ZHANG Xin-sheng. Effect of 18-Crown-6 Additive on Chromium Electrodeposition in Ionic Liquid [J]. Journal of Electrochemistry, 2020, 26(6): 859-867.|
|||DUAN Ming-tao, MENG Yan-shuang, ZHANG Hong-shuai. Preparations and Sodium Storage Properties of Ni3S2@CNT Composite [J]. Journal of Electrochemistry, 2020, 26(6): 850-858.|
|||WANG Cun, ZHANG Wei-jiang, HE Teng-fei, LEI Bo, SHI You-jie, ZHENG Yao-dong, LUO Wei-lin, JIANG Fang-ming. Degradation and Thermal Characteristics of LiNi0.8Co0.15Al0.05O2/Graphite Lithium Ion Battery after Different State of Charge Ranges Cycling [J]. Journal of Electrochemistry, 2020, 26(6): 777-788.|
|||YANG Na-chuan, WANG Yu, SHUAI Yi, CHEN Kang-hua. Preparations and Properties of Low Cost Sulfide Solid Electrolytes Li6-xPS5-xClx [J]. Journal of Electrochemistry, 2020, 26(6): 885-889.|
|||ZHANG Ze-Yang, SUN Lan, LIN Chang-Jian. Preparations and Photoelectrochemical Performances of RGO-TiO2 Nanotubes Arrays [J]. Journal of Electrochemistry, 2020, 26(6): 844-849.|
|||LOU Jing-yuan, YOU Dong-jiang, LI Xue-jing. Step-by-Step Modification of Graphite Felt Electrode for Vanadium Redox Flow Battery [J]. Journal of Electrochemistry, 2020, 26(6): 876-884.|
|||WU Kai. Preparation and Process Optimization of Cathode Materials for Lithium-Sulfur Batteries [J]. Journal of Electrochemistry, 2020, 26(6): 825-833.|
|||YU Cheng-rong, ZHU Jian-guo, JIANG Cong-ying, GU Yu-chen, ZHOU Ye-xin, LI Zhuo-bin, WU Rong-min, ZHONG Zheng, GUAN Wan-bing. Numerical Simulations of Current and Temperature Distribution of Symmetrical Double-Cathode Solid Oxide Fuel Cell Stacks Based on the Theory of Electric-Chemical-Thermal Coupling [J]. Journal of Electrochemistry, 2020, 26(6): 789-796.|
|||ZHU Chang, CHEN Wei, SONG Yan-fang, DONG Xiao, LI Gui-hua, WEI Wei, SUN Yu-han. Effect of Reaction Conditions on Cu⁃Catalyzed CO2 Electroreduction [J]. Journal of Electrochemistry, 2020, 26(6): 797-807.|
|||WANG Xue-liang, CONG Yuan-yuan, QIU Chen-xi, WANG Sheng-jie, QIN Jia-qi, SONG Yu-jiang. Core-Shell Structured Ru@PtRu Nanoflower Electrocatalysts toward Alkaline Hydrogen Evolution Reaction [J]. Journal of Electrochemistry, 2020, 26(6): 815-824.|
|||Chen Pin-song, Hu Yi-tao, Zhang Xin-yi, Shen Pei-kang. Effect of Stereotaxically-Constructed Graphene on the Negative Electrode Performance of Lead-Acid Batteries [J]. Journal of Electrochemistry, 2020, 26(6): 834-843.|
|||SHEN Jing, WANG Zi-ming, ZHENG Da-jiang, SONG Guang-ling. Pitting Behaviors of Passivated and Trans-Passivated 304 Stainless Steel [J]. Journal of Electrochemistry, 2020, 26(6): 808-814.|